ATI LPN
Cardiovascular Exam Questions Quizlet Questions
Question 1 of 5
Lusitropic impairment refers to
Correct Answer: B
Rationale: Lusitropic impairment refers to an energy-requiring process that removes free calcium ions from the cytoplasm by pumping them back into the sarcoplasmic reticulum and across the cell membrane into the extracellular fluid. Ischemia interferes with this process in the active phase of diastolic relaxation. Poor contractile force is not associated with lusitropic impairment. The conduction rate is not associated with the energy-requiring process known as lusitropy. Automaticity is not a factor in lusitropy.
Question 2 of 5
Which of the following is a common side effect of Spironolactone?
Correct Answer: B
Rationale: Spironolactone, a potassium-sparing diuretic, commonly causes hyperkalemia (B).
Question 3 of 5
Which of the following does not supply the heart with nutrient- and oxygen-rich blood?
Correct Answer: C
Rationale: The inferior vena cava returns deoxygenated blood to the heart, unlike the coronary arteries, which supply oxygenated blood to the heart muscle.
Question 4 of 5
Which blood pressure(BP) finding by the nurse indicates that no changes in therapy are needed for a patient with stage 1 hypertension who has a history of diabetes mellitus?
Correct Answer: B
Rationale: The goal for antihypertensive therapy for a patient with hypertension and diabetes mellitus is a BP<130/80 mm Hg. The BP of 102/60 may indicate overtreatment of the hypertension and an increased risk for adverse drug effects. The other two blood pressures indicate a need for modifications in the patient's treatment.
Question 5 of 5
The nursing lab instructor is teaching student nurses how to take blood pressure. To ensure accurate measurement, the lab instructor would teach the students to avoid which of the following actions?
Correct Answer: B
Rationale: Blood pressures should be taken with the patient seated with arm bare, supported, and at heart level. The patient should not have smoked tobacco or taken caffeine in the 30 minutes preceding the measurement. The patient should rest quietly for 5 minutes before the reading is taken. The cuff bladder should encircle at least $80 \%$ of the limb being measured and have a width of at least $40 \%$ of limb circumference. Using a cuff that is too large results in a lower BP and a cuff that is too small will give a higher BP measurement.