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2. Cardiologists Are Begging People to Stop This Common Habit ASAP

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   The American Heart Association adds fatigue or weakness, fainting, shortness of breath, an alternating fast-and-slow heart rate, sweating and more. If you notice these signs, Dr. Setareh urges you ...

3. Here Are Cardiologist-Approved Ways to Lower Your Resting ...

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   One of the most effective habits you can make to lower your heart rate is by exercising routinely and regularly, says Suzanne Steinbaum, M.D., cardiologist and spokesperson for the American Heart ...

4. What’s the Difference Between a Normal and Dangerous Heart Rate?

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   If your heart rate is slow and you feel dizzy and that you are about to pass out, it is important to see a doctor right away, says Paul Wang, M.D., director of the Stanford Cardiac Arrhythmia ...

5. Sinus node dysfunction - Wikipedia

   en.wikipedia.org/wiki/Sinus_node_dysfunction

   Sinus node dysfunction (SND), also known as sick sinus syndrome (SSS), is a group of abnormal heart rhythms (arrhythmias) usually caused by a malfunction of the sinus node, the heart's primary pacemaker. [1] [2] Tachycardia-bradycardia syndrome is a variant of sick sinus syndrome in which the arrhythmia alternates between fast and slow heart ...

6. Arrhythmia - Wikipedia

   en.wikipedia.org/wiki/Arrhythmia

   The resting heart rate in children is much faster. In athletes, however, the resting heart rate can be as slow as 40 beats per minute, and be considered normal. [citation needed] The term sinus arrhythmia [26] refers to a normal phenomenon of alternating mild acceleration and slowing of the heart rate that occurs with breathing in and out ...

7. Supraventricular tachycardia - Wikipedia

   en.wikipedia.org/wiki/Supraventricular_tachycardia

   A normal resting heart rate is 60 to 100 beats per minute. A resting heart rate of more than 100 beats per minute is defined as a tachycardia. During an episode of SVT, the heart beats about 150 to 220 times per minute. [9] Specific treatment depends on the type of SVT [5] and can include medications, medical procedures, or surgery. [5]