Heart block: There is a reflex called "cardioinhibitory vasodepressor syncope" in which people pass out due to very prolonged (>5 second) pauses. A pacemaker is often used but with variable success. For most other indications, such as atrio-ventricular heart block, a pacemaker is the definitive therapy with very good results.
Answered 6/11/2013
5.6k views
Sure we do: If the pacemaker was implanted specifically because of the fainting spells, the docs are assuming (or have proved) that it was likely due to a low heart rate, or a pause in the heartbeat. Pacemakers fix both.
Answered 7/23/2014
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