ATI LPN
Cardiovascular Multiple Choice Questions and Answers Questions
Question 1 of 5
Which dysrhythmia is thought to be associated with reentrant mechanisms?
Correct Answer: D
Rationale: Reentry is a complex process in which a cardiac impulse continues to depolarize in a part of the heart after the main impulse has finished its path and the majority of the fibers have repolarized. Wolff-Parkinson-White syndrome is caused by accessory pathways that originate in the atria, bypass the AV node, and enter a site in the ventricular myocardium. This causes the ventricles to contract prematurely, resulting in a reentrant tachycardia. Second-degree block is a conduction failure between the sinus impulse and its ventricular response. Sinus bradycardia is a slowed impulse generation by the sinus node. A junctional escape rhythm originates in the AV node.
Question 2 of 5
The nurse obtains the following information from a patient newly diagnosed with elevated blood pressure. Which finding is most important to address with the patient?
Correct Answer: B
Rationale: The recommendations for preventing hypertension include exercising aerobically for 30 minutes most days of the week. A weight that is 5 pounds over the ideal body weight is not a risk factor for hypertension. The Dietary Approaches to Stop Hypertension (DASH) diet is high in fiber but increasing fiber alone will not prevent hypertension from developing. The patient's alcohol intake is within guidelines and will not increase the hypertension risk.
Question 3 of 5
In a normal heart, the sinoatrial node
Correct Answer: C
Rationale: The sinoatrial node, the heart's pacemaker, has autorhythmic cells that initiate action potentials, triggering heartbeats.
Question 4 of 5
The nurse is reviewing the laboratory test results for a patient who has recently been diagnosed with hypertension. Which result is most important to communicate to the health care provider?
Correct Answer: A
Rationale: The elevated creatinine indicates renal damage caused by the hypertension. The other laboratory results are normal.
Question 5 of 5
A patient with secondary hypertension has come into the clinic for a routine check-up. The nurse is aware that the difference between primary hypertension and secondary hypertension is which of the following?
Correct Answer: A
Rationale: Secondary hypertension has a specific identified cause. A cause could include narrowing of the renal arteries, renal parenchymal disease, hyperaldosteronism, certain medications, pregnancy, and coarctation of the aorta. Secondary hypertension does respond to antihypertensive drug therapy and can cause target organ damage if left untreated.