- High frequency, clicking, pre-systolic sound
- Produced by transvenous pacemakers
- Due to stimulation of intercostal muscles by the endocardial leads
- Timing correlates with pacemaker spike in ECG
- Associated with twitching of chest wall muscle - contraction of chest wall muscle following spread of electrical impulse from pacemaker
- Diaphragmatic stimulation can also occur
- Very loud sound may suggest myocardial perforation
Showing posts with label pacemaker. Show all posts
Showing posts with label pacemaker. Show all posts
Thursday, February 25, 2010
What are Pacemaker sounds?
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