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2. Bradycardia - Wikipedia

   en.wikipedia.org/wiki/Bradycardia

   Cardiac causes include acute or chronic ischemic heart disease, vascular heart disease, valvular heart disease, or degenerative primary electrical disease. Ultimately, the causes act by three mechanisms: depressed automaticity of the heart, conduction block, or escape pacemakers and rhythms.

3. Sinus tachycardia - Wikipedia

   en.wikipedia.org/wiki/Sinus_tachycardia

   Normal heart rates vary with age and level of fitness, from infants having faster heart rates (110-150 bpm) and the elderly having slower heart rates. [3] Sinus tachycardia is a normal response to physical exercise or other stress, when the heart rate increases to meet the body's higher demand for energy and oxygen, but sinus tachycardia can ...

4. Pulseless electrical activity - Wikipedia

   en.wikipedia.org/wiki/Pulseless_electrical_activity

   Pulseless electrical activity (PEA) is a form of cardiac arrest in which the electrocardiogram shows a heart rhythm that should produce a pulse, but does not. Pulseless electrical activity is found initially in about 20% of out-of-hospital cardiac arrests [ 1 ] and about 50% of in-hospital cardiac arrests.

5. Multifocal atrial tachycardia - Wikipedia

   en.wikipedia.org/wiki/Multifocal_atrial_tachycardia

   Multifocal (or multiform) atrial tachycardia (MAT) is an abnormal heart rhythm, [2] specifically a type of supraventricular tachycardia, that is particularly common in older people and is associated with exacerbations of chronic obstructive pulmonary disease (COPD). Normally, the heart rate is controlled by a cluster of cells called the ...

6. What Causes Heart Disease? 9 Things Doctors Need You to ... - AOL

   www.aol.com/causes-heart-disease-9-things...

   “Nearly half of all U.S. adults have some form of cardiovascular disease, and it remains the leading cause of death,” she says. ... heart disease. It’s “very common,” says Suzanne ...

7. Arrhythmia - Wikipedia

   en.wikipedia.org/wiki/Arrhythmia

   Congenital heart defects are structural or electrical pathway problems in the heart that are present at birth. Anyone can be affected by this because overall health does not play a role in the problem. Problems with the electrical pathway of the heart can cause very fast or even deadly arrhythmias.