A Dual-Chamber Pacemaker Is Surgically Placed in a Patient's Chest

question 59

Multiple Choice

A dual-chamber pacemaker is surgically placed in a patient's chest.Wires then carry pulses to the right atrium and the right ventricle.How would the pulses be directed from the pacemaker to the heart?

• A) Only the ventricle would be stimulated.
• B) The ventricle would be stimulated first and then the atrium.
• C) Both the atrium and ventricle would be stimulated simultaneously.
• D) Only the atrium would be stimulated.
• E) The atrium would be stimulated first and then the ventricle.

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