A client is being treated for moderate hypertension and has been

A client is being treated for moderate hypertension and has been taking diltiazem for several months. The client schedules an appointment with the primary health care provider because of episodes of chest pain, and Prinzmetal’s angina is diagnosed. The client asks the nurse which therapeutic effects the medication will provide, and the nurse provides education. Which statement by the client indicates that the teaching has been effective? “It increases the force of contraction of heart tissues.”
“It increases oxygen demands within the myocardium.”
“It prevents an influx of calcium ions in the smooth muscle.”
“It leads to an increase in calcium absorption in the smooth muscle.”