expert opinion…

Posted on Monday 21 January 2013


ex·pert [kspûrt]
  ·noun
    a person who has extensive skill or knowledge in a particular field
  ·adjective
    1. skilful or knowledgeable
    2. of, involving, or done by an expert – an expert job
[from Latin expertus – known by experience, from experiri – to test…]

Last year, a friend called from the road, driving back from an overnight trip to South Georgia. He’d gotten sick on the trip and wanted some advice. After listening for a couple of minutes, I just knew what was wrong. He had an anomalous Appendix that had already ruptured, and I told him to drive straight to the Emergency Room. That night he had an emergency appendectomy for a ruptured anomalous Appendix. He thinks I’m a genius – a psychiatrist who can diagnose such a thing over a cell phone.

I’m not a genius, but in this case, I was an expert. As a second year medial student fifty years ago, the first autopsy I attended was on a 12 year old boy who had died from an overwhelming pneumonia within hours of coming to the hospital [a sign in the autopsy suite said, "this is where the dead teach the living how to live."]. He’d been to the Emergency Room with a stomach ache a day or so before and had been sent home. The autopsy room was filled with house officers – pediatricians, surgeons, E.R. docs. What he had was an atypical Appendix that went backwards rather than forwards, so the typical symptoms of Appendicitis were absent on that E.R. visit. It later ruptured and the infection spread through the diaphragm up into the chest showing up as a fatal pneumonia.

It was a very emotional moment for me: a twelve year old child killed by an almost routine curable illness; a room full of distraught doctors who had missed the diagnosis; and a very young me realizing that this doctoring thing was going to be some kind of serious enterprise – scared to death about all the potential mistakes looming up ahead in my own future. We each had to present an autopsy to the class at the end of the year. This was mine, and I showed up with a stack of slides of the anatomic variants of the Appendix and the many clinical faces of appendicitis. That’s why I was an expert – terror, not genius. I had seen a tragic medical error and its consequences at a formative moment in my life. I’m sure every one of us in the autopsy room that night became an expert on unusual presentations in cases of appendicitis – the expertise of experience.


We assume that expertise and experience go hand in hand, whether in a medical professional or a petty thief. The more people have seen and done, the more they know the shoals of error and illusion, the better they get at realistic predictions. When an aging elm tree mechanic looks under the hood of your car and shakes his head, it’s time to hit the car lots looking for a replacement.

In 1995, Drs. John Rush and Madhukar Trivedi spoke for the newly formed American Society for Clinical Psychopharmacology in this position paper:
Treating Depression to Remission
ASCP Speaks Out
by Rush, A John, MD and Trivedi, Madhukar H, MD
Psychiatric Annals 1995 12:704-705,709.

RATIONALE FOR THE GOAL OF FULL REMISSION

Evidence for the efficacy of antidepressant medications and brief, time-limited formal psychotherapies, although robust, is largely based on a significant reduction [rather than complete remission] of depressive symptomatology. Most randomized, controlled efficacy trials [RCTs] do not document full symptomatic remission and restoration of psychosocial and occupational functioning to premorbid levels in their evaluations of comparative efficacy. However, evidence from efficacy studies suggests that patients who fare best during continuation phase treatment are those who have attained the most complete symptomatic remission at the end of the acute phase. Thus, clinically, acute phase treatment is most successful if a full symptomatic remission, rather than just a response, results at the conclusion of the acute phase.

This recommendation is not surprising in light of the management of other chronic or recurrent general medical disorders such as diabetes, hypertension, cancer, arthritis, or congestive heart failure. For example, it is well established that complications secondary to diabetes are substantially reduced in those patients who have better physiological and clinical control of the illness. Similarly, the more prolonged and the more thorough the degree of remission, the better the prognosis, whether or not treatment is discontinued.

Perhaps it is a general property of biological systems that complete removal of the clinical manifestations of a disorder is less likely to lead to recrudescence of the illness in the future. Alternatively, it may be the case that those with the most chronic forms of illness are the least likely to attain a full symptomatic remission. Thus, evidence suggesting that full symptomatic remission is predictive of a good prognosis may, in fact, simply reflect the variable degree of responsiveness of the illness [i.e., more chronic, less responsive] rather than a treatment-specific effect.
At the time, this recommendation was based on the well documented finding that patients with remission from an episode of depression had a demonstrably better ongoing prognosis. The early 1990s were a time of Guidelines, and they were uniform in recommending treating depression to remission. As they say here, this recommendation was not based on experience, but rather on the assumption that remission itself determined the future rather than simply being a finding related to the natural course and variability of the disease. Certainly the profession gave this idea the old college try – and none with more industry, enthusiasm, and NIMH help than Drs. Rush and Trivedi [TMAP, STAR*D, CO-MED, IMPACTS, EMBARC].

They reappeared on an American College of Neuropsychopharmacology [ACNP] Task Force on this same topic a decade later along with the leaders of the DSM-5 Task Force – David J. Kupfer, Darrel A. Regier, and Helena C. Kraemer [and two future Grassley Investigation candidates – A. John Rush and Alan F. Schatzberg]:
Report by the ACNP Task Force on Response and Remission in Major Depressive Disorder
by A John Rush, Helena C Kraemer, Harold A Sackeim, Maurizio Fava, Madhukar H Trivedi, Ellen Frank, Philip T Ninan, Michael E Thase, Alan J Gelenberg, David J Kupfer, Darrel A Regier, Jerrold F Rosenbaum, Oakley Ray and Alan F Schatzberg
Neuropsychopharmacology 2006 31:1841–1853.
[full text on-line]

This report summarizes recommendations from the ACNP Task Force on the conceptualization of remission and its implications for defining recovery, relapse, recurrence, and response for clinical investigators and practicing clinicians. Given the strong implications of remission for better function and a better prognosis, remission is a valid, clinically relevant end point for both practitioners and investigators. Not all depressed patients, however, will reach remission. Response is a less desirable primary outcome in trials because it depends highly on the initial (often single) baseline measure of symptom severity. It is recommended that remission be ascribed after 3 consecutive weeks during which minimal symptom status (absence of both sadness and reduced interest/pleasure along with the presence of fewer than three of the remaining seven DSM-IV-TR diagnostic criterion symptoms) is maintained. Once achieved, remission can only be lost if followed by a relapse. Recovery is ascribed after at least 4 months following the onset of remission, during which a relapse has not occurred. Recovery, once achieved, can only be lost if followed by a recurrence. Day-to-day functioning and quality of life are important secondary end points, but they were not included in the proposed definitions of response, remission, recovery, relapse, or recurrence. These recommendations suggest that symptom ratings that measure all nine criterion symptom domains to define a major depressive episode are preferred as they provide a more certain ascertainment of remission. These recommendations were based largely on logic, the need for internal consistency, and clinical experience owing to the lack of empirical evidence to test these concepts. Research to evaluate these recommendations empirically is needed.
It is available for the reading full-text, much longer than its predecessor [it continues a tradition of precisely defining the "R’s", dating from the MacArthur Foundation sponsored meetings in the late 1980s – Response, Remission, Recovery, Relapse, Recurrence]:
If these recommendations were adopted for daily practice, clinicians would need to:

  1. specifically and repeatedly measure core criterion depressive symptom severity to guide the implementation and timely modification of treatment,
  2. conduct sufficient visits or measurements to establish that 3 consecutive weeks of minimal to no symptoms [ie, remission] has or has not been achieved,
  3. systematically inquire about the magnitude and types of side effects and overall side-effect burden, so as to accurately gauge whether the dose or type of treatment needs modification in order to achieve remission in a time-efficient fashion, and
  4. follow the trajectory of symptom change [or lack of change] such that treatments [dose, type] can be modified in a timely fashion, hopefully informed by empirically defined triage points.
The use of a depressive symptom measure to assess the nine criterion symptom domains that define an MDE by DSM-IV-TR would become routine.
This set of recommendations is roughly the lite version of the "Measurement Based Care" recommended particularly by Drs. Rush and Trivedi over the years. But notice again in this comment:
"These recommendations were based largely on logic, the need for internal consistency, and clinical experience owing to the lack of empirical evidence to test these concepts."
It’s irrational to believe that all of what we see as depression is amenable to some present or future biological intervention. Yet, for the moment, the role psychiatry has either accepted or been given in today’s health care system fits the neoKraepelinian ideal – focusing only on the biological aspects of mental illness in both etiology and treatment. Whether that’s a choice or a contemporary fate is a financial, ideological, or political matter – not a medical one. Right now, most forces on the planet press for heavy use [even overuse] of psychoactive medications: the pharmaceutical companies, the third party payers, our colleagues in mental health and medicine, and the patients themselves looking to feel better quickly. But neither psychiatry’s assigned role nor these pressures change our responsibility to accurately characterize the currently available medications and prescribe them wisely based on their real efficacy and safety.

The recommendation to treat depression to remission is an expert opinion rather than the expertise of experience. It’s based on the intuitively obvious observation that people who recover fully from an depressive episode have a rosier future than those who don’t. The idea that we can force that outcome with the aggressive use of antidepressants remains an unproven hypothesis, around for a long time [since the NIMH Collaborative Study on the Psychobiology of Depression in the early 1980s] without bearing measurable fruit. The implication of these daily practice recommendations is that treatment to remission is possible and that the side-effect burden can be managed. The message of Dr. Nemeroff’s CME presentation is the same [it doesn’t say that…]:
"The percentage of all patients treated achieving symptom remission with initial antidepressant treatment peaks at 35% — the remaining require at least two or more pharmacotherapeutic steps.
But it’s hard to look at these recommendations without the strong suspicion that they are colored by outside forces. The people behind them are almost universally involved with the industry that profits. The studies like STAR*D and CO-MED have certainly not been validating. And the hue and cry from the streets is that the side-effect burden is anything but managed. We’d be a lot better off with more balanced recommendations and perhaps a CME presentation entitled, "learning from experience: the realistic limits of our current antidepressants."
  1.  
    Bernard Carroll
    January 21, 2013 | 12:53 PM
     

    “… it’s hard to look at these recommendations without the suspicion that they are colored by outside forces.” The fact is, during that era there were no boundaries that allowed the distinction between outside forces and inside forces. NIMH and the APA and Pharma and academia and the key professional societies were all singing the same tune. It was a time when process beat out substance – they had nothing really new to say but they felt they needed to create the appearance of progress. So we got public relations exercises like the Decade of the Brain, and much-touted studies like STAR*D, which never had a prayer of delivering useful knowledge. Being built on the missteps of DSM-III definitions of depression, STAR*D just confirmed Joseph Wolpe’s aphorism that outcome studies based on mixed pathologies are of very little value. But it was important for NIMH and APA and the others that something should seem to be happening in the way of progress. So we got these McLuhanesque charades which actually set back the research effort while producing treatment algorithms that aren’t used.

  2.  
    berit bj
    January 21, 2013 | 1:26 PM
     

    The better we know “the shoals of errors and illusion” the better we’re able to protect ourselves, our loved ones, doctors able to protect patients and the foundation of trust in medicine contributing to health, not epidemics of illnesses and early deaths.

    LYKKE in Scandinavian languages means happy/ happiness. It’s the title of a Danish comic TVseries now running, about people working in a firm producing antidepressants, commonly called lykke-piller happy-pills here. The ambitious climber, a stressed-out leading lady is named LYKKE. Yesterday we saw Lykke being promised one free pill a day, as a bonus after two years. The five-year bonus would be two free anidepressants a day… My imagination immediately jumped to “these people” on the take for more than a handout of free drugs, chuckling at Danes making fun of more than their globalized company Lundbeck, in bed with the globalized Japanese Otsuka, poised for extended patents and cash from longacting “new” Abilify.
    Mother Nature has given us our miraculously automated brains of still uncharted complexity, with many more neurotransmitters than serotinin and dopamine, on which the hypothesises of too much or too little was developed after the fact, after being the first to be synthesized, I’ve been told by a critical science professor here, which I can believe after having read the historical development of thiazin, used for dyes and pesticides a hundred years before French chemists looking for new possibilities tried it on inmates of an asylum Thus was born chlorpromazine, the first blockbuster drug mimicking lobotomy, redefined, rebranded and sold as an anti-psychotic by KOLs, with eyes firmly shut to avoid seeing the resultant harm, suffering and death the ensuing 50 years.
    This colossus will someday sink like a Titanic loaded with the quacks, pharma shills and all the craven fools mistaking gold for LYKKE, when all it takes for most of us is your loved ones safe, sound and a small cabin …

  3.  
    Catalyzt
    January 21, 2013 | 2:14 PM
     

    Great post explaining the history of “treat-to-remission” . As was probably clear from my last comment, I had no idea that this idea (and the flawed logic that produced it) has actually been part of clinical practice for so long. They really did not talk much about this in my MA program, and out here in the trenches in community mental health, “treat-to-remission” is not an idea that gets much play in supervision groups. The focus is much more on functional criteria– Did the client apply for another job? If he or she didn’t stop drinking, have they stopped drinking and driving? Is he or she lying in bed sobbing two hours a week, or two days?

  4.  
    berit bj
    January 22, 2013 | 6:06 AM
     

    …”the flawed logic that produced” the idea of “treat-to-remission” is perfectly logical for business, the industrial pawns that produced it and the health professionals who shut off their senses to stay the course in spite of tons of scientifically sound clinical evidence against. The early intervention in psychosis-crowds all over bio-psychiatry are upping the bet. In november 2012 in Stavanger the McGlashan-Melle-Larsen-Johanessen-Joa-Oppjordsmoen-McGlashan-logic touted is continual treatment past remission to prevent relaps…not good for patients subjected to enforced medication. Very good for business.

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