A patient six months after orthotopic heart transplantation shows a blunted heart rate rise at the start of exercise and a delayed return to baseline. Which exercise principle is MOST appropriate?
1Avoid all aerobic conditioning because of the denervated heart
2Begin at maximal intensity and shorten total session duration
3Use extended warm-up and cool-down periods and monitor intensity by perceived exertion✓ 정답
4Prescribe the exercise intensity strictly by percentage of age-predicted maximum heart rate
해설
이식 심장은 신경 지배가 없어 순환하는 카테콜아민에 의존하므로 심박수가 늦게 오르고 늦게 내려온다. 준비운동·정리운동을 길게 하고 RPE로 강도를 판단한다.