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2. Mitral regurgitation - Wikipedia

   en.wikipedia.org/wiki/Mitral_regurgitation

   It is one of the two most common valvular heart diseases in the elderly, [27] and the commonest type of valvular heart disease in low and middle income countries. [3] In a study of 595 male elite football players aged 18–38 and 47 sedentary non-athletes, mitral regurgitation was found in 20% football players and 15% in control group. Football ...

3. Ventricular fibrillation - Wikipedia

   en.wikipedia.org/wiki/Ventricular_fibrillation

   Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. [2] It is due to disorganized electrical activity. [2] Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. [1] This is followed by sudden cardiac death in the absence of treatment. [2]

4. Cardiac arrest - Wikipedia

   en.wikipedia.org/wiki/Cardiac_arrest

   The mechanism responsible for the majority of sudden cardiac deaths is ventricular fibrillation. Ventricular fibrillation is a tachyarrhythmia characterized by turbulent electrical activity in the ventricular myocardium leading to a heart rate too disorganized and rapid to produce any meaningful cardiac output, thus resulting in insufficient ...

5. Automatic tachycardia - Wikipedia

   en.wikipedia.org/wiki/Automatic_tachycardia

   Ventricular tachycardia (V-tach or VT) is a fast heart rate arising from the lower chambers of the heart. [6] Although a few seconds of VT may not result in permanent problems, longer periods are dangerous; and multiple episodes over a short period of time are referred to as an electrical storm.

6. Primary ventricular fibrillation - Wikipedia

   en.wikipedia.org/wiki/Primary_ventricular...

   12-lead ECG of ventricular fibrillation. Primary ventricular fibrillation (PVF) is an unpredictable [1] and potentially fatal arrhythmia occurring during the acute phase of a myocardial infarction leading to immediate collapse and, if left untreated, leads to sudden cardiac death within minutes.

7. Ectopic pacemaker - Wikipedia

   en.wikipedia.org/wiki/Ectopic_pacemaker

   Acute occurrence is usually non-life-threatening, but chronic occurrence can progress into tachycardia, [1] bradycardia or ventricular fibrillation. [2] In a normal heart beat rhythm, the SA node usually suppresses the ectopic pacemaker activity due to the higher impulse rate of the SA node. However, in the instance of either a malfunctioning ...