ATI LPN
Cardiovascular Nursing Questions Questions
Question 1 of 5
Which action should the nurse take when administering the initial dose of oral labetalol (Normodyne) to a patient with hypertension?
Correct Answer: C
Rationale: Labetalol decreases sympathetic nervous system activity by blocking both α- and b-adrenergic receptors, leading to vasodilation and a decrease in heart rate, which can cause severe orthostatic hypotension. Heart palpitations, dry mouth, dehydration, and headaches are possible side effects of other antihypertensives.
Question 2 of 5
During an adult patient's last two office visits, the nurse obtained BP readings of 122/84 mm Hg and 130/88 mm Hg, respectively. How would this patient's BP be categorized?
Correct Answer: B
Rationale: Prehypertension is defined systolic BP of 120 to 139 mm Hg or diastolic BP of 80 to 89 mm Hg.
Question 3 of 5
Which is NOT a baroreceptor site?
Correct Answer: D
Rationale: Pulmonary circulation is not a primary site for baroreceptors; they are mainly located in the carotid sinus and aortic arch.
Question 4 of 5
Considering conduction rates in myocardial cells, which statement is TRUE?
Correct Answer: B
Rationale: Perkinje fibres are fast-conducting fibres capable of transmitting depolarisation at speeds up to 4 m/sec.
Question 5 of 5
Within the circulation, where is blood pressure highest?
Correct Answer: B
Rationale: Blood pressure is highest in the left ventricle as it pumps oxygenated blood into the systemic circulation.