2025/26 UPDATE (ANSWERED) CCRN PRACTICE QUESTIONS 100% CORRECT.

(answered)CCRN PRACTICE QUESTIONS 100% correct.A 62-year-old man is admitted with chest pain. His electrocardiogram reveals ST segment elevation and T wave inversion in leads V1 to V4. Aspirin has been given, and morphine titration and nitroglycerin infusion are used to relieve his chest pain. The patient suddenly develops a loud holosystolic murmur at the lower left sternal border, chest pain, and hypotension 5 days after his myocardial infarction. A pulmonary artery catheter is inserted. Which of the following parameters would be noted in this patient? A. Increase in venous oxygen saturation (SvO2) B. Decrease in pulmonary artery occlusive pressure (PAOP) C. Decrease in cardiac output D. Increase in systolic blood pressure (BP) . A patient arrived in the emergency department with complaints of chest pain. The 12-lead electrocardiogram shows ST segment elevation in leads V3 and V4. Occlusion of the affected coronary artery most likely would affect perfusion to which portion of the conduction system? A. Sinoatrial (SA) node B. Bachmann's bundle C. Atrioventricular (AV) node D. Bundle of His ... 00:34 01:27 Which of the following would not be expected in a postoperative cardiac surgery patient with a cardiac tamponade? A. Muffled heart sounds B. Increase in drainage from the mediastinal tube C. Jugular venous distention (JVD) D. Pulsus paradoxus ... A patient with acute anterior myocardial infarction develops a third-degree atrioventricular block with a ventricular escape rhythm with a rate of 38 beats/min. What would be the best immediate intervention? A. Atropine 1 mg B. Transcutaneous pacemaker C. Transvenous pacemaker D. Epinephrine 1 mg ... An aortic tear commonly is associated with which of the following? A. Acceleration-deceleration injury B. Barotrauma C. Penetrating injury of the chest wall D. Blunt force injury to the chest wall ... Which of the following is the preferred lead for ST segment monitoring for a patient with a suspected right coronary artery occlusion? A.I B. aVR C. III D. V1 ... A 55-year-old man with a long history of alcoholism continues to drink alcohol and now has alcoholic cardiomyopathy, a form of dilated cardiomyopathy. Which of the following statements about dilated cardiomyopathy is incorrect? A.It was previously called idiopathic hypertrophic subaortic stenosis. B. It causes gross enlargement of the heart. C. It interferes with systolic ejection function. D. It causes signs and symptoms of heart failure. ... A 72-year-old man arrived in the emergency department after 4 hours of substernal pain radiating to the left arm. He has a 100 pack-year history of cigarette smoking, chronic obstructive pulmonary disease, and intermittent claudication. His electrocardiogram on admission shows sinus tachycardia with a rate of 120 beats/min and ST segment elevation in leads I, AVL, and V3 to V6. Vital signs include blood pressure, 150/84 mm Hg; respiratory rate, 15 breaths/min; functional oxygen saturation (SpO2), 95%; and temperature, 38.3° C (100.9° F). Which of the following treatments would not be indicated for this patient at this time? A. Morphine and nitroglycerin B. Aspirin and fibrinolytic drugs C. Beta-blockers D. Lidocaine ... Which of the following describes the pulse pressure of a patient with aortic regurgitation? A. 30-40 mm Hg B. Less than 30 mm Hg C. More than 40 mm Hg D. Varies with phase of respiratory cycle ... Which of the following is not a manifestation of hypertrophic cardiomyopathy? A. Syncope B. Murmur that increases with squatting C. Chest pain D. Sudden cardiac death *B Classic manifestations of hypertrophic cardiomyopathy are chest pain, syncope, and an aortic stenosis type of murmur that decreases when the patient is in a squatting position. The first manifestation of this condition is occasionally sudden cardiac death during exercise. In which quadrant is the mean QRS complex axis located if the QRS complex is predominantly positive in lead I and negative in lead aVF? A. Normal quadrant B. Left axis deviation quadrant C. Right axis deviation quadrant D. Indeterminant quadrant *B Because the positive of lead I is the left arm, if the QRS complex is upright in lead I, the mean QRS axis is to the left. Because the positive of lead aVF (a unipolar lead) is at the foot, if the QRS complex is negative in lead aVF, the mean QRS axis is upward away from the foot. This axis would be in the upper left quadrant, described as left axis deviation. A patient becomes apneic and pulseless. Cardiopulmonary resuscitation (CPR) has been initiated, and the monitor shows asystole in two leads. Which of the following drugs would be used initially? A. Calcium gluconate B. Atropine C. Epinephrine D. Amiodarone (Cordarone) C After CPR is initiated and an intravenous access is established, epinephrine should be given. Calcium was used in the past in asystole but is used today only for hypocalcemia, calcium channel blocker toxicity, hyperkalemia, and hypermagnesemia. Atropine is no longer recommended for asystole. Amiodarone is not indicated in asystole because asystole is the absolute absence of irritability.