Hypertrophic cardiomyopathy activities and circumstances to avoid

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Editors-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Any activity, drug or circumstance that increases left ventricular outflow obstruction, reduced left ventricular filling, or increases left ventricular afterload should be avoided.

Activities That Reduce Preload

The following activities increase left ventricular outflow tract obstruction and should be avoided:

• Nausea and vomiting
• Dehydration
• Hypovolemia (i.e., use diuretics with caution)
• Medications that reduce preload and left ventricular filling such as nitrates
• Alcohol ingestion may change outflow obstruction for a wide variety of reasons
• Heavy meals may change the outflow obstruction for a wide variety of reasons including splanchnic pulling of blood

Activities That Increase Afterload

The following activities increase left ventricular afterload should be avoided:

• Competitive endurance training
• Burst activities (e.g., sprinting)
• Intense isometric exercise (e.g., heavy weight lifting)