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Question 1: Which of the following statements describes phase 4 of the action potential of cells in the sinoatrial (SA) node?
Question 2: A 31-year-old woman with a congenital heart defect reports episodes of light-headedness and syncope, with occasional palpitations. A resting electrocardiogram reveals sinus bradycardia, and she is suspected to have sick sinus syndrome. Which of the following diagnostic methods is the best choice to investigate the suspicion?
Question 3: A patient has been diagnosed with anemia. The physician suspects an immune hemolytic anemia and orders a Coombs test. The patient asks the nurse what this test will tell the doctor. The nurse replies,
Question 4: Of the following list of patients, who would likely benefit the most from hyperbaric oxygen therapy?
Question 5: A 71-year-old male patient with a history of myocardial infarction (MI) and peripheral vascular disease (PVD) has been advised by his family physician to begin taking 81 mg aspirin once daily. Which of the following statements best captures an aspect of the underlying rationale for the physician’s suggestion?