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Open-heart surgery leaves people with a long chest incision and a lengthy recovery. Most of the precautions that people must follow during the first four to six weeks after surgery are to protect the incision and the breastbone while they heal.

Labile hypertension refers to blood pressure that fluctuates more dramatically than usual. Possible contributors to blood pressure elevations include stress, diet, and medication. Deep sleep and very warm weather can cause blood pressure dips.