The Pacemaker S4like Click

1. When can an electronic pacemaker produce an extra sound? When does the extra sound occur?

ANS: When it causes intercostal skeletal muscle contraction, it can produce a high-pitched, clicking sound just preceding the M1, so that it sounds like a widely split Sl. It is accentuated by inspiration and occurs about 6 ms after the pacing stimulus. Perforation of the myocardium of the RV by a transvenous pacing electrode should be suspected when the pacemaker-induced sound occurs. This, however, is not a necessary concomitant.

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Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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