During evaluation of a professional andurance athletes, the physician detected a soft heart murmur. The patient has no medical conditions and takes no medications. Blood pressure is 106/62 mm Hg and pulse is 60/min. Physical examination shows a soft systolic murmur best heard at the left second intercostal space in the supine position. The murmur disappears when the patient is upright but reappears after brief exercise. Which of the following cardiovascular adaptations best explains this patient's finding?

Question

During evaluation of a professional andurance athletes, the physician detected a soft heart murmur. The patient has no medical conditions and takes no medications. Blood pressure is 106/62 mm Hg and pulse is 60/min.  Physical examination shows a soft systolic murmur best heard at the left second intercostal space in the supine position.  The murmur disappears when the patient is upright but reappears after brief exercise.  Which of the following cardiovascular adaptations best explains this patient's finding?

Quizplus · Accepted Answer

Eductional Objective: Intensive endurance training causes cavity enlargement of both the left ventricle and right ventricle to facilitate an increase in stroke volume and cardiac output.  The high stroke volume may cause a pulmonic valve flow murmur.

During Evaluation of a Professional Andurance Athletes, the Physician Detected