A Patient Has Been Admitted After the Insertion of a Pacemaker

question 5

Multiple Choice

A patient has been admitted after the insertion of a pacemaker because of bradycardia. She asks what third-degree heart block is, and the nurse replies

• A) "Coronary blood vessel occlusion causing slow contraction of the right ventricles."
• B) "Sclerosis of cardiac valves causing slow pulse."
• C) "A defect in AV junctions slows and impairs conduction of impulses from the SA node to the ventricles."
• D) "Increased pressure in the pulmonary vessels."

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