Cardiovascular problems and diving.

In the US the Diving Alert Network has a list of physicians for medical consultation. I am one of the cardiologists on the list and I get about a call a day about some cardiac question that raises issues of safety or fitness for diving. I will discuss the commoner categories such as coronary artery disease, congenital heart disease, valvular disorders, arrhythmias, conduction disorders, pacemakers, some of the common cardiac drugs used in the treatment of hypertension and some other relatively benign medical conditions that raise questions about the use of the drugs rather than the condition itself.