59. Which symptom(s) would be expected if a pacemaker suddenly malfunctioned?
. Pulse rate higher than set.
. Shortness of breath, dizziness.
. Atrial fibrillation, hypotension.
. Premature ventricular contractions (PVCs).
Test-Taking Tip
Choose the option that is different from the others. Only one describes the effects of poor perfusion.
Content Area: Adult Health, Cardiology; Integrated Process: Nursing Process, Assessment; Cognitive Level: Application; Client Need/Subneed: Physiological Integrity/Physiological Adaptation/Pathophysiology
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Answer 1 is incorrect because the heart is not beating independently, so the pulse rate would decrease. Answer 2 is correct because ventricular function would be affected, causing signs of heart failure and inadequate perfusion. Answer 3 is incorrect because a pacemaker is not correcting atrial fibrillation but a conduction defect to the ventricles. Answer 4 is incorrect because initially the client would experience symptoms consistent with heart failure from inadequate cardiac pumping.