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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!paladin.american.edu!auvm!FALCON.IUPUI.EDU!"VA::DOUG"
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- Message-ID: <930122033146.3e00126e@FALCON.IUPUI.EDU>
- Newsgroups: bit.listserv.scuba-l
- Date: Fri, 22 Jan 1993 03:31:46 -0500
- Sender: Scuba diving discussion list <SCUBA-L@BROWNVM.BITNET>
- From: DOUG <"VA::DOUG"@FALCON.IUPUI.EDU>
- Subject: RE: Heart Surgery and Scuba Diving
- Lines: 22
-
- I believe you will find there is no definitive data on this. You will also
- find DAN and PADI are extremely conservative on these matters. We do know
- from studies in the literature that patients less than 6 months out from a
- heart attack are at increased risk for adverse cardiac events when subjected
- to major stressors such as general anesthesia. Note that the term "heart
- attack" is severely abused by the general public. Heart attack (more
- technically, myocardial infarction) is defined to be loss of heart muscle
- (myocardium) resulting from interruption of oxygen delivery (ischemia).
- If we can extrapolate this experience to diving, then one year may not be
- an unreasonable estimate. Despite your detailed description of your
- friend's medical condition, there are many parameters that you have no
- knowledge of that may affect this decision. His cardiovascular surgeon
- is clearly in the best position to evaluate his cardiac risk, though he
- may have limited knowledge of diving physiology. DAN on the other hand
- has amassed considerable knowledge of diving physiology, but cannot
- possibly know all of the intricate details of your friend's condition.
- In addition, despite all of the neat studies on diving physiology in
- healthy subjects, there is very little data on patients with chronic
- medical conditions. Until this gap in our medical knowledge is filled,
- no one can make recommendations with complete confidence.
-
- Doug Martin, M.D.
-