The nurse explains that following a myocardial infarction (MI), the pumping efficiency of the heart is altered because there is:
a. loss of impulse from the sinoatrial node.
b. necrosis of the myocardium.
c. diminished blood flow.
d. inflammation and swelling of the myocar-dium.
B
Necrosis of the myocardium is what causes the loss in pumping efficiency. There is diminished blood flow and swelling, but the cause of loss of cardiac output is that there is less muscle to contract.
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a. St. John's wort b. Aloe vera c. Valerian d. Ginkgo
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Which of the following statements by a patient would alert the nurse to an increased risk for skin cancer?
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