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These medical condition or symptom topics may be relevant to medical information for Premature atrial contractions (PAC):
Premature atrial contractions (PAC): Premature atrial contractions (PAC) is listed as a type of (or associated with) the following medical conditions in our database:
Arrhythmias (medical condition): Irregularity in the heart's beating rhythm.
Arrhythmias (medical condition): An arrhythmia is a disorder of the heart's beating rhythm. When it causes a noticable change in the sound of a beat, when heard by a doctor's stethoscope, it is often called a "heart murmur". There are various different types of arrhythmias ranging from almost harmless to very serious. Correct diagnosis of the specific subtype and any underlying condition is extremely important.
Arrhythmias: An arrhythmia is a change in the regular beat of the heart. The heart may seem to skip a beat or beat irregularly or very fast... (Source: excerpt from NHLBI, Arrhythmia: NHLBI)
Most people have felt their heart beat very fast, felt a fluttering in their chest, or noticed that... (Source: excerpt from HEART AND CARDIOVASCULAR DISEASE: NWHIC)
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