A 60-year-old female has survived a myocardial infarction. The nurse is providing care for im-paired ventricular function because:
a. there is a temporary alteration in electro-lyte balance.
b. there is too much stress on the heart.
c. the cells become hypertrophic.
d. the resulting ischemia leads to hypoxic injury and myocardial cell death.
ANS: D
The patient has impaired ventricular functioning because a portion of the myocardium has died due to ischemia. Impaired ventricular function is due to damage to the myocardium; it is not due to electrolyte imbalance. There was stress on the heart, but the impaired functioning is due to myocardial damage secondary to ischemia. The impaired ventricular dysfunction is due to myo-cardial cell death, not hypertrophy.
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