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Harvard Heart Letter

Ask the doctor: Why does my heart sometimes feel like it stops, then starts up again with a jerk?

Published: June, 2011

Q. I am 92 years old. I have atrial fibrillation and high blood pressure, both controlled by medication. Every so often when I am relaxed in my chair after dinner, my heart feels like it stops and then starts up again with a jerk. Is this something I should worry about?

A. If you have atrial fibrillation, it is common to feel your heart pause and then start up with a bit of a kick. Here's why:

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Daily Health Tip

Memorize the warning signs of a stroke

The acronym FAST can help. F: Face drooping. Can the person smile? Is the smile uneven? A: Arm weakness. Is one arm weak or numb? If the person raises both arms, does one drift down? S: Speech difficulty. Is the person's speech slurred? Can they repeat simple sentences you give them? T: Time to call 911. If the person shows any of these symptoms, even if the symptoms go away, call 911. Check the time so you know when the symptoms began.

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Ask the doctor: Why does my heart sometimes feel like it stops, then starts up again with a jerk?

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Ask the doctor: Why does my heart sometimes feel like it stops, then starts up again with a jerk?

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