Factitious Decompression?

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

Thank you all for your contributions and discussion. I've been really impressed by the level of knowledge and discussion. DocVikingo's description is both accurate and elegant. To what he(?) said, I would only add that the incidence of factitious disorder is generally estimated in the medical literature to be 0.6 to 1.3% of general hospital admissions. Like all deceptions, many cases are never discovered. One of the best studies ever done was by Anthony Fauci (now director of the NIH institute for allergies and infectious diseases) when he was a fellow (trainee) in 1979. In the era before ethics and consent, his team was investigating the cause of patients who had fevers of unknown origin. This was an "elite" population of patients who had been evaluated by local doctors, local hospitals and academic centers with no cause found. By spying on them (without their knowledge) and keeping track of mercury thermometers (each had a serial number) they were able to demonstrate more than 9% of the patients exhibited factitious behavior such as shaking down the thermometer, putting it in coffee, switching a raised thermometer while a nurse was not looking. One patient was noted to have used an unusual form of friction to raise the thermometer's temperature....

So it happens more than we think. A large prospective hospital population study in a highly regulated hospital system in the Netherlands found that 3% of patients admitted for inpatient care had no organic cause (although presumably not all were factitious).

The costs are enormous in terms of wasted laboratory tests, imaging and resources. It also puts the patients at risk as many procedures have small but real risks and some patients engage in behavior which leads to unnecessary surgery or exposure to anesthetic. There is also a cost others as it potentially delays the use of MRI, operating rooms and yes, hyperbaric oxygen chambers from other patients. But fundamentally these people carry an enormous amount of distress and internal pain with them as evidenced by the lengths they go to in order to be cared for.

As DocVikingo and the Duke Dive representative state, many factitious patients are very sophisticated; studies suggest that 1/4-1/2 have some degree of formal medical training as medical students, nurses, laboratory techs, medical clerks or so on. Many others have had medicalized lives with long histories of prolonged ("real") childhood disease or family members with prolonged medical illnesses. The simpler patients are weeded out. I'm sure we don't detect the most sophisticated and successful - partly because the general assumption of clinicians is that they are working hard to understand and hopefully help what is wrong with people, while most clinicians accept that patients may provide misinformation, few start with the assumption that the underlying presumption of illness is false.

The other issue is that factitious disorder is a psychiatric disease but the vast majority of the patients are seen by non-psychiatrists (emergency docs, internists, surgeons). The psychiatry service is only called when it becomes "obvious" that something doesn't make sense or laboratory values become inconsistent.

And Knotical, the idea that divers are a "special" population probably doesn't hold water (sorry). Highly trained and "fit" groups such as the military, pilots and teachers and others have had factitious behavior reported. Even lawyers.

Thank you again for the discussion; if any of the dive docs have had a case, I'd appreciate a private message.
 
Hello flots am:

When I started in DCS research in 1969, there were two cases of DCS at Ocean Systems where I worked. These were commercial divers in a chamber experiment who desired treatment while receiving their dive pay. Of course, the question was, is this real, or have the test subjects found a clever way to boost their pay?

No answer to this question was found [they were treated], but it did spark years of studies for a blood test for DCS. It also started “biochemical mechanisms” for DCS.

To this day, we do not have any objective test for DCS. It was a question in the commercial diving world, and now I see a question here regarding recreational diving.


Dr Deco :doctor:
 
WTG, man, three cheers.

Our ckenedi makes it into print:

"Undersea Hyperb Med. 2013 May-Jun;40(3):267-74.

A systematic review of factitious decompression sickness.

Kenedi C, Sames C, Paice R.

SourceDepartment of General Medicine, Auckland City Hospital, Auckland, New Zealand. bluedevilkiwi-factitious@yahoo.com

Abstract

We present a case of factitious decompression sickness (DCS) involving a patient emergently treated at a hyperbaric medicine facility in New Zealand. Patients with factitious disorder feign illnesses such as DCS in order to receive care and attention despite the lack of an underlying illness. Other studies have suggested that 0.6% to as many as 9.3% of hospital admissions are factitious in nature. Therefore we believe that factitious DCS is occurring more often than hyperbaric clinicians suspect. DCS can be life-threatening, and hyperbaric medicine clinicians will almost always "err on the side of caution" when patients are referred with symptoms of DCS. Because DCS can be diagnosed based on subjective symptoms and self-reported history, there are opportunities for factitious patients to receive hyperbaric therapy. The costs associated with factitious DCS include transport, staff resources and preventing patients with treatable conditions from accessing the hyperbaric chamber. We performed a systematic review of the literature and found eight additional reported cases of confirmed or suspected factitious DCS. We report our findings and recommendations for hyperbaric medicine specialists regarding the recognition and management of factitious DCS."

Regards,

DocV
 
Congratulations, ckenedi!

I wonder if part of the reason that factitious DCS might be relatively rare is that the general population knows little or nothing about DCS, nor is information about it common in general medical textbooks. It is difficult to feign illness if you don't know anything about the illness you are trying to feign!

My most interesting factitious patient was a fellow who was admitted multiple times for GI bleeding, for which we could find no source. He was an odd fellow with a complicated medical history that had led to him having an infusion port implanted. It turned out he was accessing the port and drinking the blood he withdrew. It was discovered in a rather clever way; we did a tagged red cell scan on him, which involved him being injected with radioactive cells. After the scan, one of the senior residents searched his room with a Geiger counter, and discovered a syringe in the trash that was hot. He was confronted with the evidence, and he packed up and left.
 
A very interesting topic!



With only a lay person’s understanding of these disorders, I can see how DCS would lend itself to these behaviors. DCS is a little exotic, difficult to objectively document and treatment involves a lot of equipment, attention and people.
It would be very difficult for us to know exactly how often someone like this gets hyperbaric treatment. I think we all know that there are psychosomatic reactions that happen. We’ve heard of people demanding oxygen for DCS symptoms after inconsequential dives (pool dives) and I knew of an incident years ago where a diver suffering from back pain and mild tingling went through two days of chamber treatments before receiving treatment for some physical back ailment (I think it was a ‘slipped disc’ or something.) Once when I was working behind the counter at a dive store, a person called on the phone and asked if it was possible to get bent in an air conditioned building that had a slightly positive air pressure forced from the ventilation system.
But hypochondria and misdiagnosis err on the side of safety in sincerity, making them quite different then this syndrome.
[FONT=&quot]I’d be willing to bet that all the hypochondriacs, pulled muscles and Munchausens are still a statistical grain of dust compared to the spearos, techies and wreckers in denial who work through the shoulder pain and skin rash. Until we have some quantifiable medical test for DCS, it still has to be,’ Strip down and get in the chamber. Better safe than sorry.’ [/FONT]
 
(bold mine)

I'm curious how you determine this?

Finding actual bubbles would certainly confirm it's existence, but does the absence of observable bubbles actually confirm it's not real?

If someone complains of symptoms, receives treatment, and then stops complaining how would you know whether it was "real" or not?

Or for that matter, how can you tell the difference between someone who is faking DCS, with someone who isn't sure, but believes they have the symptoms?



Considering that treatment will generally ruin a vacation, I have a really hard time imagining anybody wanting to fake DCS. In fact, it tends to go the other way, with people who quite plainly have DCS, attributing symptoms to all sorts of other things.

flots.
Not to mention HBO treatment isn't exactly fun!

Seriously, though, I've had a few of patients with fictitious disorders. Benefits of doing Internship at a large military training center. And, one when I was a resident, later on. They do tend to chose disorders that require lots of medical testing, maybe so that they get more attention and treatment? I had a Munchausen's by Proxy who was causing her baby to get sick and we suspect may have caused a 21 1/2 week delivery but will never know for sure. I had a lady injecting feces into her own port to cause fevers.
I also saw a teenager who truly believed that she couldn't walk or feel her legs from the knees down. It was impressive to see her walk out of the clinic that day. She wasn't faking it, just had all sorts of issues going on in the family that caused a somatic illness. This is very different and interesting illness, sort of like the kid who becomes blind or cant talk after a traumatic event. She really thought she had these physical symptoms but there was physically nothing wrong with her.
 
https://www.shearwater.com/products/teric/

Back
Top Bottom