Antihypertensives
There are a number of drugs that can be used to lower hypertension (which is also referred to as high blood pressure). Their side effects vary, so some are more suited than others for use by divers.
Because of this effect, doctors often recommend that those who take beta blockers undergo a stress test before diving. According to Dr. Alfred Bove, a dive-medicine specialist, divers who take beta blockers but who can achieve a strenuous level of exercise without severe fatigue can be cleared for diving. Bove also points out that although diving does not usually represent the maximum workload on an individual's heart, anyone who takes beta blockers should avoid extreme exercise because their maximum exercise capacity may be reduced.
Beta Blockers
Beta blockers are commonly prescribed to treat hypertension, but they have a big drawback for divers: They can reduce the heart's capacity for exercise. If a medication restricts the heart's function during exercise, then there is an increased risk of loss of consciousness, which could prove fatal while diving.Because of this effect, doctors often recommend that those who take beta blockers undergo a stress test before diving. According to Dr. Alfred Bove, a dive-medicine specialist, divers who take beta blockers but who can achieve a strenuous level of exercise without severe fatigue can be cleared for diving. Bove also points out that although diving does not usually represent the maximum workload on an individual's heart, anyone who takes beta blockers should avoid extreme exercise because their maximum exercise capacity may be reduced.