Joel, I am sure it CLEARLY states that this does NOT apply where instructors
and training agencies are trying to make money. Just ask Tom Mouth or some
other reputable, reliable , scrupulous and honest source - they will say
exactly the same thing.

So what if Renanker has had a heart attack and is a ridiculous fat slob and
totally out of shape. Lee Gibson has assured us that this is OK, as has
Mouth and the CDS lets him teach, so who are you to question these
luminaries and authoritarians?

So what if a "sizeable" number of CDS instructors are ridiculous physical
jokes?

-----Original Message-----
From: Joel Markwell <joeldm@mi*.co*>
To: Techdiver <techdiver@aq*.co*>
Cc: Cavers <cavers@cavers.com>
Date: Thursday, June 15, 2000 11:53 AM
Subject: Heart Disease Contraindications to Diving


>In researching the aspirin/ibuprofen prevention of DCS I came across this
in
>the 23rd Annual Meeting of the European Underwater and Baromedical Society
>abstracts:
>
>CARDIOLOGICAL PROBLEMS. E. Schenk. Vienna, Austria.
>
>SCUBA diving requires physiological adaptation as a consequence of the
>increased ambient pressure, changes in partial pressure of oxygen,
breathing
>resistance and water temperature. Cardiac arrhythmias, bradyarrhythmias
>(sinus node dysfunction, AV conduction disturbances) or tachyarrhythmias
>(with or without premature complexes) may occur during SCUBA diving.
>Patients with arrhythmias Lowe III/IV using a bicycle ergometer, second
>degree AV block (Wenckebach) or third degree AV block, bifascicular block
>and syncope, must not SCUBA dive. Also, patients with ischaemic heart
>disease. Recently, myocardial infarction during SCUBA diving was attributed
>as the cause of death in a 27 year old diver, with undiagnosed severe
>endomyocardial fibrosis and arrhythmia. Patients with systolic and
diastolic
>murmur must have a Doppler echocardiogarphy and a Doppler flow
>echocardiogarphy before being allowed to dive. Valve regurgitation without
>hemodynamic importance during exercise requires regular echocardiography.
>Most patients with mitral valve problems are asymptomatic, but some might
be
>prone to paroxysmal supraventricular or ventricular tachycardia.
>CONCLUSIONS: In many cases, complete medical history, conscientious
>inspection and examination; electrocardiogram and roentgenogram should
>provide evidence of any cardiological problems. Occasionally, other methods
>such as echocardiography will be necessary.
>
>

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