Overview. A premature atrial contraction is an extra heartbeat that occurs occasionally, often for no known reason, momentarily throwing off the heart's normal rhythm . This type of extra heartbeat originates in one of the upper chambers of the heart, known as the atria.
A premature atrial contraction is an extra heartbeat that starts in one of your heart's upper chambers (atria). It may feel like your heart skips a beat. |
5 авг. 2024 г. · Symptoms · A flutter in your chest · Fatigue after exercise · Shortness of breath or chest pain · Lightheadedness or dizziness. Featured ... |
Premature atrial contractions (PACs) are extra heartbeats that begin in one of your heart's two upper chambers (atria). These extra beats disrupt your ... |
24 сент. 2024 г. · Premature beats that start in your heart's upper chambers are premature atrial contractions, or PACs. Those that start in the lower chambers are ... |
Premature atrial contractions (PACs) occur when the electrical pulse for one of the heart's two upper chambers, the atria, comes before the normal heartbeat and ... |
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