Showing posts with label SSRI. Show all posts
Showing posts with label SSRI. Show all posts

Thursday, July 13, 2023

Post SSRI Sexual Dysfunction (PSSD) - Current Status

 


Post Selective Serotonin Reuptake Inhibitor Sexual Dysfunction (PSSD) is a proposed disorder of sexual dysfunction that continues after antidepressant medication has been discontinued.  The symptoms include (2) prior treatment with an SSRI, a change in genital sensation after the SSRI has been stopped, decreased libido, anorgasmia, erectile dysfunction, and a duration of symptoms for 3 months following the cessation of the SSRI.  It is also a diagnosis of exclusion since pre-SSRI sexual dysfunction and other medications or medical conditions that could account for the symptoms need to be ruled out. It is a controversial diagnosis at this point because the true prevalence of the condition is unknown and the studies of the condition are generally low quality.

The diagnostic criteria for PSSD and PGAD are listed in the graphic above. It is not clear at this point what the diagnostic standard is for these disorders and heterogeneity is clearly an issue. For example, do a certain number or pattern of symptoms need to be present or could a single symptom be present with SSRI exposure and qualify for the diagnosis.

The controversy about PSSD reached its zenith with a recent article suggesting that antidepressants caused “chemical castration.”  When I first heard about this issue a few years ago it reminded me of the decades old problem of priapism (persistent painful erections) associated with trazodone use.  At the time (now about 27 years ago) I did a literature search on the incidence of spontaneous priapism in adult males and found that it matched the frequency suggested with trazodone use - but there were problems with determination of the true prevalence in both cases.

Prevalence estimates in the literature are approximate because they depend either on voluntary reporting (since there is no formal pharmacovigilance system in the United States) or available survey samples that typically have some obvious bias. In the 27 years since, I have warned every male patient I prescribed trazodone to and what to do about the problem. None of those patients developed priapism.  Two noticed they had AM erections that seemed unusual but did not develop priapism.  They ignored the erections, did not call me, and noticed that everything went back to normal.  In my experience, that is how most people manage side effects – even when you tell them they are potentially severe and may require medical or surgical intervention.

My experience with sexual side effects of antidepressants is similar. Since these side effects are common with antidepressants – it is one of many that I verbally advised patients about. My protocol was to provide people with the MedlinePlus handouts, advise them how to access the package insert for all of the detailed information, but then discuss the side effects they are most likely to encounter including antidepressant withdrawal, rare side effects that can be very serious like serotonin syndrome and drug induced liver disease, and a general advisory to call me with any questions about what might be a drug side effect: "If you feel ill assume it may be the medication and call me."  On the latter, I emphasize the call to me should been as soon as the problem develops and that I never expect that a person will “get used to” medication side effects.

The literature suggests that direct discussion of sexual side effects is more likely to result in patient reports if those side effects occur. In my experience it generally requires an explanation of what to look for in terms of libido and actual sexual functioning. Assessment is complicated by the high prevalence of these symptoms in depression and the fact that some people prefer the antidepressant effect over any lack of effect or deleterious effects on sexual functioning.

A logical place to start considering PSSD is to look at prevalence estimates from available studies.  A 19-year retrospective observational analysis of 12,302 men in an HMO setting (1) estimated the prevalence of PSSD to be 1 in 216 patients (0.46%) treated with SSRIs. The prevalence of PSSD was 4.3 per 100,000.  Cases were identified by exposure to SSRI and treatment of (erectile dysfunction) ED with PDE-5 inhibitors.  Other conditions were ruled out on an administrative basis based on BMI and medications that that potentially cause ED.  The authors point out that the design had limitations in that the trade-off of medical treatment as a proxy for ED diagnoses may underestimate the prevalence of ED/PSSD. 

In a second systematic review (2) – look at PSSD and Persistent Genital Arousal Disorder (PGAD).  PGAD can occur in the context of no treatment with an SSRI but it has also been reported after SSRI treatment.  The main differentiating point is that is has sensations of persistent genital arousal or genital dysesthesias. It may also be associated with uncontrolled orgasms.  Time criteria suggested is greater than 3 months.

These authors reference the European Medicines Agency (EMA) recognizing the PSSD diagnosis in 2019 (3).  Unfortunately, the EMA web site is only slightly more user friendly that the FDA website.  I have linked to the referenced document and included the relevant text at the top of this post.  I could find no more detailed information about the rationale for inclusion.  The suggested links just brought me back to the original document. References or even regulatory documents would be useful in this case to determine the EMA rationale for this position. It appears to have been based on a pharmacovigilance signal and that could be generated from registries in Europe, but at this point I cannot confirm the information.

The available literature on PSSD consists primarily of case reports, speculation about the biological plausibility of the disorder, and in the discussions calls for more studies of the true prevalence of the disorder.   19 studies were included in the review. Incidence or prevalence of PGAD could not be determined.

Physical causes of some of these symptoms are obviously important.  Herpes zoster or shingles infections cause about 100,000 cases of genital dysesthesias per year. There have been reports of Herpes simplex genital viral infections (HSV-1, HSV-2) causing similar symptoms. HSV-1 and HSV-2 cause significant neuropathic symptoms during acute recurrences, but that has been thought to resolve with each recurrence. Local and systemic neurological conditions affecting pelvic nerves and the autonomic nervous system are also potential causes.  There are many complicating factors when considering sexual dysfunction in the population as a whole, in untreated depression and in treated depression.

1:  Baseline rate/causes of sexual dysfunction:

In the largest post Kinsey study (7,8) , a national probability sample in the US looked at 7 indicators of sexual dysfunction including decreased desire for sex, arousal difficulties, inability to achieve climax, anxiety about sexual performance, climaxing or ejaculating too soon, physical pain during intercourse, and not finding sexual intercourse pleasurable. Only sexually active respondents were analyzed. 43% of women and 31% of men reported a problem.  Psychosocial and medical factors were also investigated and found to be relevant.  The authors conclude that sexual dysfunction is a significant public health problem.  The codebook for the original study was downloaded and medication history was not included.

2:  Baseline rate of sexual dysfunction due to depression:

Rates of sexual dysfunction in both sexes due to depression are similarly high. A comprehensive review of that literature by Gonçalves, et al (9) showed high rates of dysfunction in women than men.  Their data is summarized in the far right column in the table below.  These researchers also pointed out an important methodological problem with studies that depend on standard rating scales - some do not ask if the respondent considers the symptom to significantly affect their level of functioning. It is possible to do a rating scale experiment that show impairment when the respondent does not believe they are impaired.


3:
  Antidepressant sexual side effects:

Sexual side effects are a well-known side effect of modern antidepressants.  Various strategies have been suggested over the years to reduce or eliminate these side effects.  The only strategy I found effective was to change to a different antidepressant.  Prevalence rates of these side effects were initially available from package inserts and comparisons with placebo in drug trials.  The last summary information I have looking at those numbers is from the 2012 Drug Facts and Comparisons.  In a comparison of all of the available SSRIs at the time the following rates were suggested: decreased libido 1-12%, paresthesia (non-specific) 1-4%, abnormal ejaculation 6-27%, female genital disorders 2-10%, male genital disorders 4-10%, sexual dysfunction/impotence/anorgasmia 1-13%.   Comparisons across antidepressant classes is difficult because of changing categories. For example, SNRIs (venlafaxine, desvenlafaxine, duloxetine, milnacipran) generally have lower sexual dysfunction figures.  By the time duloxetine was marketed the package insert contained ratings from the Arizona Sexual Experiences Scale (ASEX) and comparisons with placebo.

 Conclusions:

 There are several problems with the current conceptualization of PSSD including:

1:  The evidence basis is largely anecdotal case reports, case series and abundant speculation based on those case reports.  There are no controlled studies so the prevalence of PSSD in populations untreated with antidepressants is unknown. Experts in the PSSD field also suggest this is due to changing diagnostic criteria (Goldstein).

2:  Both untreated depression and treated depression have significant symptom overlap with the suggested diagnosis of PSSD

3:  The incidence of sexual dysfunction in the general population without depression who have never been treated with antidepressant medication is high and varies as expected with comorbidities, age and other medical treatments. (Laumann). 

4:  There are no validated instruments or protocols to identify cases of PSSD. Multiple authors suggest determining the prevalence of the problem more accurately but that study would have to be carefully designed.

5:  Opinions in the popular press can bias prevalence studies at this point.  In the past, survey studies have proven that they can elicit any predetermined opinions and should be avoided.  How to eliminate this factor introduced by the press and anti-antidepressant advocates is not clear.  

6:  The determination of the pharmacovigilance signal by the EMA should be clarified.  It is possible that I did not find it.  In that case, I would appreciate being directed to that source. I emailed the European Medicines Agency asking for clarification on July 10 and am still waiting for a response. The process also has lessons for the United States.  I have long been an advocate for a more formal pharmacovigilance system in the US.  The next step would be a system like the Netherlands where any person could call in a suspected adverse event and there would be a connection to formal regulation as wording in package inserts.

7:  For psychiatrists in the US, I would see the current situation as comparable to the FDA warnings on suicidal behavior and suicidality on SSRIs and treat it the same way.  Even though pharmacovigilance in the US is basically post marketing surveillance, it makes sense to add PSSD/PGD to the informed consent discussion with patients as a potential risk of antidepressant treatment. It can be mentioned in the same discussion as sexual side effects from these medications. I would also describe these diagnoses as a work in progress at this point due to the limiting factors.

8:  The impact of the current level of discussion in the press and the effect it may have on patients taking antidepressants has not been determined at this point. In my practice in the past, most people make their own determinization of whether these warnings apply to them and may discuss it in the office, but it is reasonable to ask if they have any concerns while discussing side effects.

9: Ideological bias – there is clearly a faction of criticism that conflates pharmaceutical interests with psychiatry and makes it seem like there is a psychiatric agenda to overprescribe medications and cover-up side effects.  This same faction has a very limited to non-existent scientific basis and an equally robust clinical approach to psychiatric problems. More importantly they appear to not treat serious problems and at times have criticized people who find both psychiatric diagnosis and treatment helpful. An awareness of this bias is necessary when evaluating literature focused on the characterization and prevalence of PSSD. 

10:  Ratings from existing trials: The current controversy is reminiscent of the emotional blunting controversy (10) and the suggestion that antidepressants work by blunting emotions. Ron Pies and I reviewed studies that used the Montgomery–Åsberg Depression Rating Scale (MADRS) to show that decreased feeling was correlated with depression and that emotional blunting improved with treatment.  Existing rating scales for antidepressant trials have only 1 item that rates sexual functioning and that it the Hamilton Depression Rating Scale (HAMD). There is limited opportunity to do retrospective studies on existing clinical trials on that basis.

11:  The nocebo effect: The nocebo effect is essentially a negative expectation or expectancy that affects both the potential efficacy and side effect profile of a medication.  The effect is significant for all medication including antidepressants.  In antidepressant trials an analysis of the placebo exposed group showed that 63.9% reported treatment emergent adverse events, 11.2% experienced worsening depression, and 4.7% discontinued the trial due to an adverse event – all while taking placebo. In a recent review Colloca and Barsky discuss the importance of the media, press, and direct exposure to people with adverse events “all foster nocebo responses.” They give an example of how negative press coverage led to a 2,000 fold increase in adverse event reporting when a new medication covered by the national health plan came out. 

 If you have followed my various lines of reasoning so far it is probably apparent that I take any pharmacovigilance signal seriously. You must when you are a clinician who warns people about side effects that occur in the 1 in 10,000 to 1 in 50,000 range.  I consider the best prevalence estimate in this case to be less than 1 in 1,000, but all the experts clearly acknowledge problems with the diagnostic criteria and changing criteria.  In order to take the PSSD problem seriously it must be considered a multidisciplinary problem. Psychiatrists, neurologists, OBGYN specialists, urologists, psychologists, and physical therapists have all written about the problem and in many cases documented successful treatments. In some of those papers, multiple individual or combined treatments were highly successful. From a psychiatric standpoint, SSRIs have been resumed and treatment like adding bupropion or vortioxetine have seen successful – but the evidence basis is very limited. If this condition came to my attention in a patient, I was treating my preferred approach would be to discontinue the SSRI or SNRI if possible and develop a referral source where I could refer the patient for the necessary evaluation looking for neuropathic causes and documenting the level of sexual dysfunction. In my region that would probably involve referrals of men and women to a well-known Urology clinic that has sub-specialists in this area. The ultimate plan would also depend on patient preference, individual history of treated depression, and where the research in this disorder was at the time. Every individual needs a unique plan and looking at the heterogeneity of findings in this research – unique plans will be the rule and not the exception.

Currently, prevalence studies as well as studies that look at the issue of how these symptoms vary as people transition during episodes of treatment for depression and/or anxiety are required.  That will be a significant undertaking.  Observational studies based on active treatment may be a suitable substitute but safeguards need to be taken to assure adequate documentation of baseline sexual dysfunction, a clearly defined diagnosis and diagnostic thresholds, correlation with antidepressant treatment, and hopefully resolution both with or without treatment.

Lastly, if you are a person with any of the sexual problems described in this post – antidepressant related or not the best potential solution is a direct discussion with your personal physician or psychiatrist. If necessary, send them a link to this post and suggest they read the last two paragraphs. As always my posts are intended to be educational informed by clinical practice and not suggest that I know more than anyone else.

 

George Dawson, MD, DFAPA

 

 

References:

1:  Ben-Sheetrit J, Hermon Y, Birkenfeld S, Gutman Y, Csoka AB, Toren P. Estimating the risk of irreversible post-SSRI sexual dysfunction (PSSD) due to serotonergic antidepressants. Ann Gen Psychiatry. 2023 Apr 21;22(1):15. doi: 10.1186/s12991-023-00447-0. PMID: 37085865; PMCID: PMC10122283.

2:  Tarchi L, Merola GP, Baccaredda-Boy O, Arganini F, Cassioli E, Rossi E, Maggi M, Baldwin DS, Ricca V, Castellini G. Selective serotonin reuptake inhibitors, post-treatment sexual dysfunction and persistent genital arousal disorder: A systematic review. Pharmacoepidemiol Drug Saf. 2023 Jun 9. doi: 10.1002/pds.5653. Epub ahead of print. PMID: 37294623.

3:  European Medicines Agency. Pharmacovigilance Risk Assessment Committee recommendations on safety signals. 11 June 20191 EMA/PRAC/265221/2019 Pharmacovigilance Risk Assessment Committee (PRAC).  https://www.ema.europa.eu/en/documents/other/new-product-information-wording-extracts-prac-recommendations-signals-adopted-13-16-may-2019-prac_en.pdf

4:  Healy D, Bahrick A, Bak M, Barbato A, Calabrò RS, et al. Diagnostic criteria for enduring sexual dysfunction after treatment with antidepressants, finasteride and isotretinoin. Int J Risk Saf Med. 2022;33(1):65-76. doi: 10.3233/JRS-210023. PMID: 34719438; PMCID: PMC8925105.

5:  Lewer, D., O'Reilly, C., Mojtabai, R., & Evans-Lacko, S. (2015). Antidepressant use in 27 European countries: Associations with sociodemographic, cultural and economic factors. The British Journal of Psychiatry, 207(3), 221-226. doi:10.1192/bjp.bp.114.156786

6:  Goldstein I, Komisaruk BR, Pukall CF, et al. International Society for the Study of Women's Sexual Health (ISSWSH) Review of Epidemiology and Pathophysiology, and a Consensus Nomenclature and Process of Care for the Management of Persistent Genital Arousal Disorder/Genito-Pelvic Dysesthesia (PGAD/GPD). J Sex Med. 2021 Apr;18(4):665-697. doi: 10.1016/j.jsxm.2021.01.172. Epub 2021 Feb 19. PMID: 33612417.

7:  Laumann EO, Paik A, Rosen RC. Sexual dysfunction in the United States: prevalence and predictors. JAMA. 1999 Feb 10;281(6):537-44. doi: 10.1001/jama.281.6.537. Erratum in: JAMA 1999 Apr 7;281(13):1174. PMID: 10022110.

8:  Laumann, Edward O., Gagnon, John H., Michael, Robert T., and Michaels, Stuart. National Health and Social Life Survey, 1992: [United States]. Inter-university Consortium for Political and Social Research [distributor], 2008-04-17. https://doi.org/10.3886/ICPSR06647.v2 

9:  Gonçalves WS, Gherman BR, Abdo CHN, Coutinho ESF, Nardi AE, Appolinario JC. Prevalence of sexual dysfunction in depressive and persistent depressive disorders: a systematic review and meta-analysis. Int J Impot Res. 2023 Jun;35(4):340-349. doi: 10.1038/s41443-022-00539-7. Epub 2022 Feb 21. PMID: 35194149

10:  Dawson G, Pies RW.  Antidepressants do not work by numbing emotions. Psychiatric Times. Sept 26, 2022:  https://www.psychiatrictimes.com/view/antidepressants-do-not-work-by-numbing-emotions

11:  LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Adverse Drug Reaction Probability Scale (Naranjo) in Drug Induced Liver Injury. [Updated 2019 May 4]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK548069/

12:  Colloca L, Barsky AJ. Placebo and Nocebo Effects. N Engl J Med. 2020 Feb 6;382(6):554-561. doi: 10.1056/NEJMra1907805. PMID: 32023375.

13:  Haanpää M, Paavonen J. Transient urinary retention and chronic neuropathic pain associated with genital herpes simplex virus infection. Acta Obstet Gynecol Scand. 2004 Oct;83(10):946-9. doi: 10.1111/j.0001-6349.2004.00500.x. PMID: 15453891.

14:  Ooi C, Zawar V. Hyperaesthesia following genital herpes: a case report. Dermatol Res Pract. 2011;2011:903595. doi: 10.1155/2011/903595. Epub 2011 Apr 18. PMID: 21747842; PMCID: PMC3130996.

15:  Whalen AM, Mateo CM, Growdon AS, Miller AF. Sacral Myeloradiculitis: An Uncommon Complication of Genital Herpes Infection. Pediatrics. 2019 Jul;144(1):e20182631. doi: 10.1542/peds.2018-2631. PMID: 31217310.

16:  Reisman Y. Sexual Consequences of Post-SSRI Syndrome. Sex Med Rev. 2017 Oct;5(4):429-433. doi: 10.1016/j.sxmr.2017.05.002. Epub 2017 Jun 20. PMID: 28642048.

 

 

Case Reports (not exhaustive – truncated at 10 – I think these references capture the largest numbers):

1:  Ekhart GC, van Puijenbroek EP. Blijvende seksuele functiestoornissen na staken van een SSRI? [Does sexual dysfunction persist upon discontinuation of selective serotonin reuptake inhibitors?]. Tijdschr Psychiatr. 2014;56(5):336-40. Dutch. PMID: 24838589.

From 2002 to 2012, 19 cases reported to Netherlands Pharmacovigilance Centre, Lareb occurring after patients has stopped the medications for 2 months to 3 years. Approximately 1 million people per year are prescribed antidepressants in the Netherlands.  See: https://www.statista.com/statistics/718241/usage-of-dispensed-antidepressants-in-the-netherlands/

2:  Patacchini A, Cosci F. A Paradigmatic Case of Postselective Serotonin Reuptake Inhibitors Sexual Dysfunction or Withdrawal After Discontinuation of Selective Serotonin Reuptake Inhibitors? J Clin Psychopharmacol. 2020 Jan/Feb;40(1):93-95. doi: 10.1097/JCP.0000000000001154. PMID: 31834096.

3:  Bolton JM, Sareen J, Reiss JP. Genital anaesthesia persisting six years after sertraline discontinuation. J Sex Marital Ther. 2006 Jul-Sep;32(4):327-30. doi: 10.1080/00926230600666410. PMID: 16709553.

Single case of a 26-year-old man.

4:  Waldinger MD, van Coevorden RS, Schweitzer DH, Georgiadis J. Penile anesthesia in Post SSRI Sexual Dysfunction (PSSD) responds to low-power laser irradiation: a case study and hypothesis about the role of transient receptor potential (TRP) ion channels. Eur J Pharmacol. 2015 Apr 15;753:263-8. doi: 10.1016/j.ejphar.2014.11.031. Epub 2014 Dec 4. PMID: 25483212.

43 yr old man with loss of smell, taste, and skin sensation shortly after he started to take paroxetine for depression.  He has associated problems with sexual functioning and sensation for 2 years after the paroxetine was discontinued.  Full Text

5:  De Luca R, Bonanno M, Manuli A, Calabrò RS. Cutting the First Turf to Heal Post-SSRI Sexual Dysfunction: A Male Retrospective Cohort Study. Medicines (Basel). 2022 Sep 1;9(9):45. doi: 10.3390/medicines9090045. PMID: 36135826; PMCID: PMC9503765.

13 male patients referred for treatment.  PSSD sx onset 2-4 weeks after discontinuation of SSRI.  Retrospective, uncontrolled treatment study. Most patients were significantly improved at 12 month follow up after treatment with vortioxetine, bupropion, or mechanical stimulation on a standard scale.

6:  Reisman Y, Jannini TB, Jannini EA. Post-selective serotonin reuptake inhibitor sexual dysfunctions (PSSD): clinical experience with a multimodal approach. Journal of Men's Health. 2022 Aug 1;18(8):165.

12 male patients with a “high probability” of PSSD 9-26 months post treatment with an SSRI (one patient was treated with amitriptyline). Retrospective, uncontrolled treatment study with all patients improving at 12 months.

7:  Chinchilla Alfaro K, van Hunsel F, Ekhart C. Persistent sexual dysfunction after SSRI withdrawal: a scoping review and presentation of 86 cases from the Netherlands. Expert Opin Drug Saf. 2022 Apr;21(4):553-561. doi: 10.1080/14740338.2022.2007883. Epub 2021 Nov 27. PMID: 34791958.

86 cases reported to the Netherlands Pharmacovigilance Center of Lareb from 1992 to 2021.  Longest duration was 23 years.  Common symptoms were loss of libido, erectile dysfunction, and anorgasmia.

8:  Dannon PN, Iancu I, Cohen A, Lowengrub K, Grunhaus L, Kotler M. Three year naturalistic outcome study of panic disorder patients treated with paroxetine. BMC Psychiatry. 2004 Jun 11;4:16. doi: 10.1186/1471-244X-4-16. PMID: 15191617; PMCID: PMC441384.

143 patients with panic disorders treated with paroxetine were followed for one an acute treatment phase followed by either 12 month or 24-month paroxetine maintenance.  Relapse rates in both groups were similar. Sexual side effects were determined clinically rather than a structured interview asking about sexual desire and sexual function. Prevalence of sexual side effects was 30% in both groups and the presence of agoraphobia potentiated these side effects – consistent with some psychological theories.  Not clear about the status of sexual side effects during the discontinuation phase.

9:  Healy D, Le Noury J, Mangin D. Enduring sexual dysfunction after treatment with antidepressants, 5α-reductase inhibitors and isotretinoin: 300 cases. Int J Risk Saf Med. 2018;29(3-4):125-134. doi: 10.3233/JRS-180744. PMID: 29733030; PMCID: PMC6004900.

300 cases (221 on antidepressants) solicited through a web site established by the authors. They acknowledge the design of the likely encouraged reporting. The authors calculate a causality score based on the Naranjo algorithm that is described as the “probability of an adverse drug reaction.”  This paper has a unique take on the effects of antidepressants that are not seen in any other references. It is available online and I encourage anyone who is interested to access it and read it.  One example that is incredible and seems uncomplicated by clinical experience: “The ability of serotonin reuptake inhibitors to reduce genital sensation is well known. Almost everyone who takes one will experience some degree of genital numbing, often within 30 minutes of taking the first dose.”

10.  Csoka AB, Bahrick A, Mehtonen OP. Persistent sexual dysfunction after discontinuation of selective serotonin reuptake inhibitors. J Sex Med. 2008 Jan;5(1):227-33. doi: 10.1111/j.1743-6109.2007.00630.x. Erratum in: J Sex Med. 2008 Dec;5(12):2977.. Csoka, A [corrected to Csoka, AB]. PMID: 18173768.

3 cases of persistent sexual dysfunction 3 of 1300 subjects from an Internet group that were assessed as credible were interviewed.  No medical causes for the sexual dysfunction were determined. 


Supplementary 1:

I received a reply today from the European Medicines Agency on my request for information on their regulatory decision to include language on sexual dysfunction from SSRIs.  The entire response is given below.  

 

Dear Dr Dawson,

Thank you for your request for access to documents.

We are writing to inform you that the Agency is not in a position to process your request.

Transparency is an important feature of the European Medicines Agency's operations.  As for any public authority, the Agency strives to be as open as possible about how it works and how it comes to its decisions.

However, due to the increasingly high volume of access to documents requests resulting in an excessive workload, and in order to avoid the core business tasks of the Agency and its performance being jeopardised by the administrative workload related to activities within Regulation (EC) 1049/2001 regarding public access to European Parliament, Council and Commission documents (the Regulation), the Agency has taken the decision to process only access to documents requests submitted by citizens of the European Union and natural or legal persons residing or having their registered office in a EU Member State.  This approach reflects Article 2(1) of Regulation (EC) No 1049/2001 and was agreed by the EMA Executive Board on 15 June 2018.

This is also clearly outlined on the Agency’s website at https://www.ema.europa.eu/en/about-us/how-we-work/access-documents under the heading “Who can request access to documents”.

If you have a European affiliate, please submit a new access to documents request indicating the relevant location from EMA’s online webform https://www.ema.europa.eu/en/about-us/contact/send-question-european-medicines-agency.

Thank you for your understanding.

Kind regards,

European Medicines Agency
Domenico Scarlattilaan 6, 1083 HS Amsterdam, The Netherlands
Telephone: +31 (0)88 781 6000



Supplementary 2:

The graphic below is the reference I could find on their current site that led me to request additional information:





Monday, December 11, 2017

Takotsubo's and Antidepressants






Takotsubo's cardiomyopathy (TC) is a form of acute dilated cardiomyopathy.  It was first described in Japan in 1990 and since then there have been increasing reports of the problem.  It is an uncommon problem thought to be due to excessive catecholamines and their effects on heart muscle. A definitive source on the autonomic nervous system points out that the plasma levels of catecholamines are extreme and consistent with activation of both the sympathetic nervous system and adrenal medulla (15).  As seen in the above ventriculography the left ventricle is dilated and elongated.  The typical presentation is acute coronary syndrome (dyspnea, chest pain, syncope) with a  low to modest levels of troponin - a biomarker for cardiac tissue damage.  Electrocardiogram show T wave inversions and ST segment elevation.  Echocardiograms show  The imaging results generally show and acutely dilated and lengthened left ventricle and wall motion abnormalities. Overall this pathology represents a low number of cases with acute coronary syndrome.  Most people recover in up to 4 weeks if the diagnosis is made and the patient is treated.  That treatment may involve the discontinuation or changing of antidepressant medications.

One of the questions that psychiatrists face is whether to resume existing therapy or withhold in the case of a new diagnosis of cardiac disease.  It is not an easy decision.  At least it is not a straightforward as it used to be.  In complicated situations in the past, psychiatric medications were routinely discontinued.  Today - talking with a consultant it is much more common to hear:  "Yes those adverse reactions are possible but if the patient needs the medication - they need the medication."  There are no strict rules on the issue like there seem to have been at one point.  The ideal medication for cardiac problems in psychiatry has limited effect on cardiac conduction and is benign in terms of hemodynamics.  Those effects are difficult to predict on both an individual and group basis in that small number of cases where the response is more critical.  As an example, I contacted an expert on hypertension and he advised me that he was generally unconcerned about the two antidepressants that I end up monitoring for possible effects - buproprion and venlafaxine.  In his experience, he though they added an average of 3 mm Hg systolic hypertension and that is trivial.  I am seeing people on more medications who may have alcohol and substance use problems that can significantly compound the hypertension problem.  The blood pressure I see are considerably higher in some cases where these antidepressants are used or added.

TC was first reported in 1990.  Case reports on TC and the association with antidepressants began to show up in about 2008 with a case report involving nortriptyline (15).  A recent letter to the editor (1) points out the trend and the possible correlation based on the temporal relationship between antidepressant initiation/titration and TC (4).  In that paper the authors identified 8 cases in the literature and a case series of 6 patients.  They report their case as well as 8 additional cases and the demographic, clinical, laboratory data of all of the patients.  Eight of 9 cases were women in the age range of 37 to 82.  In each of these cases the patient was taking an SNRI (venlafaxine, desmethylvenlafaxine, and duloxetine).  The youngest patient overdosed on 2100 mg venlafaxine.  The presumed etiology in the initial cases was a stressor that lead to catecholamine excess and cardiomyocyte toxicity, but in 5/9 cases a stressor was not present.  Although the authors note the association with SNRI type antidepressant case have been reported with atomoxetine (an NRI), fluoxetine (an SSRI), with a case of serotonin syndrome, and withdrawal of antidepressant therapy.  The association in the case reports may be seem more robust that it really is.   Although the case reprts and incident of ACS are low - the sheer number of cases (one every 25 seconds in the USA) assures that even low prevalence disorders like TC will occur in significant numbers.

What are the implications for psychiatrists?  The prototype for me in this case was clozapine.  Clozapine is an atypical antipsychotic with many side effects.  The focus for most psychiatrists has been the neurophil monitoring and prevention of agranulocytosis.  Clozapine also has significant cardiac side effects including acute myocarditis with typical symptoms of myocarditis.  I think that anyone prescribing clozapine needs to be aware of these symptoms and monitor the patient for them.  In this case the cardiac review of systems is critical along with the physical examination of the patient at every visit or at least until they are on a stable dose of medication.

Antidepressants are generally approached in a more casual manner than antipsychotics.  Every patient needs to be carefully screened for side effects and the medication needs to be stopped or modified as indicated.  There should be more vigilance after FDA warnings about the QTc prolonging properties of antidepressants specifically citalopram. But if a patient has an arrhythmia questions on a review of systems are probably not enough.  I can say that because I take my own vitals signs and know that patients with new onset arrhythmias (atrial fibrillation, ventricular premature contractions, bigeminy, etc) are generally missed with standard blood pressure measurement systems and the patient is unaware that they are no longer in normal sinus rhythm.  In many cases tachycardia and other symptoms of acute coronary syndrome are the only findings.  These case reports illustrate to me that psychiatrists and primary care physicians prescribing these medications need to have a low threshold for testing and referral both to the emergency department and cardiology.   As previously posted - if you are in a large mental health clinic and have enough support staff - consider getting an ECG machine.  A faxed abnormal ECG and a verbal report is a sure way to get the attention of a cardiologist or emergency medicine physician.

In terms of the eventual epidemiology and pathophysiology of TC, inferring that SNRIs are definitely involved in either is highly speculative at this point.  In many ways the situation resembles the problem of seeing Vitamin D deficiency as being causative for any number of disorders when there is a high prevalence of Vitamin D deficiency in the population.  I have always seen SNRIs as better tolerated than SSRIs with a cardiac  safety profile that might be slightly better if the prolonged QTc interval issue with citalopram was real.  The best way to study the issue is to identify large numbers of patients with TC on echocardiogram and compare them to a control group and see if the correlation between SNRIs and TC is real.  As far as I know that study has not been done.

In the meantime, pay close attention to the cardiovascular status of patients on antidepressants, especially during the titration phase and if they may have a high catecholamine load inferred from clinical anxiety, exacerbations of physical illness, and stress levels. .  Use findings like tachycardia as a prompt for more focused questions and examination.

Takotsubo's cardiomyopathy is just another medical condition that can complicate psychiatric treatment - that you do not want to miss.                           




George Dawson, MD, DFAPA




References:

1: Madias JE. Venlafaxine and takotsubo syndrome: Can we learn more from published patient cases? Int J Cardiol. 2016 Dec 15;225:73-74. doi: 10.1016/j.ijcard.2016.09.133. Epub 2016 Oct 1. PubMed PMID: 27716552.

2: Conrad SK, Catalano MC, Catalano G. The Use of Fluoxetine in a Patient With Takotsubo Cardiomyopathy. J Psychiatr Pract. 2016 May;22(3):234-8. doi: 10.1097/PRA.0000000000000151. PubMed PMID: 27123803. 

3: Naguy A, Al-Mutairi H, Al-Tajali A. Atomoxetine-related Takotsubo Cardiomyopathy. J Psychiatr Pract. 2016 May;22(3):232-3. doi: 10.1097/PRA.0000000000000152. PubMed PMID: 27123802. 

4: Vasudev R, Rampal U, Patel H, Patel K, Bikkina M, Shamoon F. Selective Serotonin-norepinephrine Reuptake Inhibitors-induced Takotsubo Cardiomyopathy. N Am J Med Sci. 2016 Jul;8(7):312-5. doi: 10.4103/1947-2714.187153. PubMed PMID: 27583240.

4: Madias JE. Withdrawal of prolonged antidepressant therapy and Takotsubo syndrome. Heart Lung. 2014 Nov-Dec;43(6):578. doi: 10.1016/j.hrtlng.2014.06.053. Epub 2014 Jul 22. PubMed PMID: 25063669. 

5: Dias A, Franco E, Figueredo VM, Hebert K, Quevedo HC. Occurrence of Takotsubo cardiomyopathy and use of antidepressants. Int J Cardiol. 2014 Jun 15;174(2):433-6. doi: 10.1016/j.ijcard.2014.04.028. Epub 2014 Apr 13. PubMed PMID: 24768456. 

6: Kitami M, Oizumi H, Kish SJ, Furukawa Y. Takotsubo cardiomyopathy associated with lithium intoxication in bipolar disorder: a case report. J Clin Psychopharmacol. 2014 Jun;34(3):410-1. doi: 10.1097/JCP.0b013e3182a95a27. PubMed PMID: 24699038. 

7: Marabotti C, Venturini E, Marabotti A, Pingitore A. Delayed multifocal recurrent stress-induced cardiomyopathy after antidepressants withdrawal. Heart Lung. 2014 May-Jun;43(3):225-30. doi: 10.1016/j.hrtlng.2014.03.003. PubMed PMID: 24794783. 

8: Neil CJ, Chong CR, Nguyen TH, Horowitz JD. Occurrence of Tako-Tsubo cardiomyopathy in association with ingestion of serotonin/noradrenaline reuptake inhibitors. Heart Lung Circ. 2012 Apr;21(4):203-5. doi: 10.1016/j.hlc.2011.12.004. Epub 2012 Jan 27. PubMed PMID: 22285074. 

9: Rotondi F, Manganelli F, Carbone G, Stanco G. "Tako-tsubo" cardiomyopathy and duloxetine use. South Med J. 2011 May;104(5):345-7. doi: 10.1097/SMJ.0b013e318213f3e5. PubMed PMID: 21606714. 

10: Trohman RG, Madias C. Duloxetine-induced tako-tsubo cardiomyopathy: implications for preventing a broken heart. South Med J. 2011 May;104(5):303-4. doi: 10.1097/SMJ.0b013e318213d10f. PubMed PMID: 21606702. 

11: Forman MB, Sutej PG, Jackson EK. Hypertension, tachycardia, and reversible cardiomyopathy temporally associated with milnacipran use. Tex Heart Inst J. 2011;38(6):714-8. PubMed PMID: 22199446; PubMed Central PMCID: PMC3233339. 

12: Selke KJ, Dhar G, Cohn JM. Takotsubo cardiomyopathy associated with titration of duloxetine. Tex Heart Inst J. 2011;38(5):573-6. PubMed PMID: 22163139; PubMed Central PMCID: PMC3231522. 

13: Mehta NK, Aurigemma G, Rafeq Z, Starobin O. Reverse takotsubo cardiomyopathy: after an episode of serotonin syndrome. Tex Heart Inst J. 2011;38(5):568-72. PubMed PMID: 22163138; PubMed Central PMCID: PMC3231548. 

14: Christoph M, Ebner B, Stolte D, Ibrahim K, Kolschmann S, Strasser RH, Schön S. Broken heart syndrome: Tako Tsubo cardiomyopathy associated with an overdose of the serotonin-norepinephrine reuptake inhibitor Venlafaxine. Eur Neuropsychopharmacol. 2010 Aug;20(8):594-7. doi: 10.1016/j.euroneuro.2010.03.009. Epub 2010 May 7. PubMed PMID: 20451358. 

15: De Roock S, Beauloye C, De Bauwer I, Vancraynest D, Gurne O, Gerber B, Hantson P. Tako-tsubo syndrome following nortriptyline overdose. Clin Toxicol (Phila). 2008 Jun;46(5):475-8. doi: 10.1080/15563650701519786. PubMed PMID: 18568805. 

16: Wachira JK, Stys TP. Cardiovascular disease and bridging the diagnostic gap. SD Med. 2013 Sep;66(9):366-9. Review. PubMed PMID: 24279112.

17: Goldstein DS. Catecholamines 101. Clinical autonomic research : official journal of the Clinical Autonomic Research Society. 2010;20(6):331-352. doi:10.1007/s10286-010-0065-7.




Attribution:

"Levocardiography in the right anterior oblique position shows the picture of an octopus pot, which is characteristic for Takotsubo cardiomyopathy."

Hammer N, Kühne C, Meixensberger J, Hänsel B, Winkler D.  Takotsubo cardiomyopathy - An unexpected complication in spine surgery. Int J Surg Case Rep (2014).  Link Used per open access license.

Sunday, May 14, 2017

Not Taking Antidepressants




I came across this open access article on my Twitter feed that highlights some of the reality of antidepressants that I was trying to get at in my previous post.  I encourage a full reading of the article in order to understand it - specifically how patients were selected from a large commercial database.  In this retrospective study the authors selected patient with a diagnosis of major depressive disorder (MDD) who were taking and antidepressant but only in a specific time interval.  They did this for the purpose of constructing the above survival curve.  They started with a group of 6,562,955 people on antidepressants between 7/1/2003 and 1/1/2014 and ended up excluding all but 527,907.  Exclusions were based on no diagnosis of MDD in the previous 6 months, no prescription of an AD in the previous 6 months, lack of continuous enrollment in the previous 6-12 months, and pharmacological  therapies that included initiating treatment with more than one AD or 3+ ADs or augmenting agents (AA).  The final study population was 527,907 patients.

Two major endpoints were defined as measures of medication adherence - medication possession ratio (MPR) and proportion of days covered (PDC).  PDC was considered the primary measure of adherence due to previous convention.  Calculations were made at 3, 6, 9, and 12 months.  Persistence and adherence were calculated for each major antidepressant class (SSRI, SNRI, TCA, MAOI, and Other).  Adherence and persistence were calculated across all of these dimensions.  Bar graphs are available in the full text.

Adherence and persistence at 6 months was 31-36%.  SNRIs had the highest persistence and adherence rates at 6 months at 37% and TCAs the lowest at 16-17%.  Looking at the Kaplan-Meier survival above the curves were significantly different with the lowest adherence to initial TCA and MAOI therapy.  The curves also show natural break points at 30 and 90 day intervals that correspond to the typical length of prescriptions although most primary care physicians provide a significant number of refills beyond that.

A study like this has obvious limitations and the authors do a good job of explaining them. Most of them had to do with the limitations of using a database like this one with limited granularity.  For example - no data about the status of the prescriber or practice context.  I would have the question of whether adherence was any different among those given and antidepressant based on a screening questionnaire versus more detailed assessment and follow up.  It would also be interesting to see if subjects seeing psychiatrists were any more adherent than than what I am guessing are the majority of patients being see in primary care.  Surrogate markers for psychiatric care could have been devised based on AD and AA combinations but that would be an imperfect marker since most primary care depression guidelines incorporate these strategies.   There was a very minor erratum (2) essentially a typographic error that does not change the main paper.                      

When I look at a study like this, I always ask myself if the study group resembles the people I am currently seeing or have seen.  In this case 64% of the population was female and 81% were covered by commercial insurance.  Twenty-four percent had comorbid anxiety, 24% had comorbid chronic noncancer pain, and 6% had both.  Sertraline has the largest percentage of prescriptions at 18.7% with only about 5.4% of people on bupropion extended release.  I currently see a large number of people on sertraline or citalopram +/- bupropion augmentation.  Despite the FDA warning about maximum doses of citalopram - I still see people on 60 mg/day or > 40 mg/day who are 62 years of age or older.  Both of those situations were flagged in the FDA warning.

I do find that SNRI medication are better tolerated than SSRI and do not hesitate to make that change sooner than later.

Give the limitations this is an interesting study.  At several levels it matches my experience.  At least 20-40% of people do not tolerate SSRIs very well.  I have also found that  SNRIs are effective and more well tolerated than SNRIs.  The major limitation from my perspective is that without the data that the authors refer to - it is really not possible to design a clinical program that optimized adherence or that provides much of a foundation for the differences.  Many psychiatrists have the experience that they see the same people with severe depression for years.  In many cases plasma levels of antidepressants are measure to optimize dosing but they also confirm adherence.  In other cases, the patients are in settings where medications are administered.  A critical dimension in psychiatric practice is the ongoing relationship with the patient.

Looking at how the relationship with the patient and how that effects adherence is needed, but it is obviously a more difficult study to capture in a retrospective database.              


George Dawson, MD, DFAPA



References:

1:  Keyloun KR, Hansen RN, Hepp Z, Gillard P, Thase ME, Devine EB. Adherence and Persistence Across Antidepressant Therapeutic Classes: A Retrospective Claims Analysis Among Insured US Patients with Major Depressive Disorder (MDD). CNS Drugs. 2017 May;31(5):421-432. doi: 10.1007/s40263-017-0417-0. PubMed PMID: 28378157.


2: Keyloun KR, Hansen RN, Hepp Z, Gillard P, Thase ME, Devine EB. Erratum to:Adherence and Persistence Across Antidepressant Therapeutic Classes: A Retrospective Claims Analysis Among Insured US Patients with Major Depressive Disorder (MDD). CNS Drugs. 2017 Apr 27. doi: 10.1007/s40263-017-0435-y. [Epub ahead of print] PubMed PMID: 28451963.



Attribution 1:

The above graphic is directly from reference 1 reposted per terms of the Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.  No changes were made to the graphic.  Click on the graphic to enlarge.


Thanks:

To Barney Carroll for putting this reference on his Twitter feed.