The S1 heart sound is two of your heart valves closing. It's the first sound doctors can hear with a stethoscope. Learn what ...

The S3 heart sound is essentially blood rushing into a specific chamber. Learn how this sound correlates to congestive heart ...

The likelihood of atrial fibrillation (AF) or atrial tachycardia (AT) was significantly higher starting at temperatures around 86°F, when compared with a reference of 66°F. Odds ratios rose to 2.24 or ...

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