Your homecare patient is post-myocardial infarction with CHF…

Your homecare patient is post-myocardial infarction with CHF. He becomes SOB, fatigued, and his heart rate tends to increase beyond his recommended parameter while performing basic self-care activities, otherwise he has no mobility problems. In order to increase independence and safety in shower/bathing, you would recommend which of the following for use in the bathtub?