Cardiac Dysrhythmias Test Bank Questions Graded A+

Cardiac Dysrhythmias Test Bank Questions Graded A+ When observing an ECG tracing where not all QRS complexes are preceded by a P wave, it indicates that depolarizations of the atria and ventricles originate from different sites within the heart. Normally, each QRS complex is preceded by a P wave, reflecting coordinated depolarization starting from the SA node. In contrast, the absence of P waves before QRS complexes suggests that electrical impulses are not uniformly originating from the SA node. For a client with a heart rate averaging 56 beats per minute without symptoms, the nurse should advise against straining during bowel movements. This precaution helps prevent further slowing of the heart rate by avoiding vagal stimulation, which can exacerbate bradycardia. This recommendation is essential as other activities like warm baths, caffeine intake reduction, or avoiding strenuous exercise do not directly address the risk posed by vagal stimulation during bowel movements in this context. A nurse is assessing clients on a med-surg unit. Which client should the nurse identify as being at greatest risk for atrial fibrillation? A. A 45-year-old who takes an aspirin daily. B. a 50-year-old who is post coronary artery bypass surgery. C. A 78-year-old who had a carotid endarterectomy. D. An 80-year-old with COPD. ️B. a 50-year-old who is post coronary artery bypass surgery. Rationale: Atrial fibrillation occurs commonly in clients with cardiac disease and is a common occurrence after coronary artery bypass graft surgery. The other conditions do not place these clients at higher risk for atrial fibrillation. A nurse assesses a client with atrial fibrillation. Which manifestation should alert the nurse to the possibility of a serious complication from this condition? A. Sinus tachycardia B. Speech Alterations C. Fatigue D. Dyspnea with activity ️B. Speech Alterations Rationale: Clients with atrial fibrillation are at risk for embolic stroke. Evidence of embolic events includes changes in mentation, speech, sensory function, and motor function. Clients with atrial fibrillation often have a rapid ventricular response as a result. Fatigue is a nonspecific complaint. Clients with atrial fibrillation often have dyspnea as a result of the decreased cardiac output caused by the rhythm disturbance. A nurse evaluates prescriptions for a client with chronic atrial fibrillation. Which medication should the nurse expect to find on this client's medication administration record to prevent a common complication of this condition? A. Solatol (Betapace) B. Warfarin (Coumadin) C. Atropine (Sal-Tropine) D. Lidocaine (Xylocaine) ️B. Warfarin (Coumadin) Rationale: A-fib puts clients at risk for developing emboli. Clients at risk for developing emboli are treated with anticoagulants, such as heparin, enoxaparin, or warfarin. Sotalol, atropine, and lid