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2. Ventricular tachycardia - Wikipedia

   en.wikipedia.org/wiki/Ventricular_tachycardia

   Ventricular tachycardia (V-tach or VT) is a cardiovascular disorder in which fast heart rate occurs in the ventricles of the heart. [3] 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.

3. Arrhythmia - Wikipedia

   en.wikipedia.org/wiki/Arrhythmia

   While most cases of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. [2] [3] Others may result in sudden death. [3] Arrhythmias are often categorized into four groups: extra beats, supraventricular tachycardias, ventricular arrhythmias and bradyarrhythmias. [3]

4. Myocardial infarction complications - Wikipedia

   en.wikipedia.org/wiki/Myocardial_infarction...

   3D still showing normal heart vs heart failure. A myocardial infarction may compromise the function of the heart as a pump for the circulation , a state called heart failure . There are different types of heart failure; left- or right-sided (or bilateral) heart failure may occur depending on the affected part of the heart, and it is a low ...

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

   www.aol.com/difference-between-normal-dangerous...

   With the exception of being a well-trained athlete or being asleep, a sustained heart rate less than 45 or greater than 110 may indicate a heart rhythm issue that is worth getting checked out ...

6. Heart failure - Wikipedia

   en.wikipedia.org/wiki/Heart_failure

   Heart failure with recovered ejection fraction (HFrecovEF or HFrecEF): patients previously with HFrEF with complete normalization of left ventricular ejection (≥50%). [64] [65] Heart failure may also be classified as acute or chronic. Chronic heart failure is a long-term condition, usually kept stable by the treatment of symptoms.

7. Athletic heart syndrome - Wikipedia

   en.wikipedia.org/wiki/Athletic_heart_syndrome

   Athletic heart syndrome (AHS) is a non-pathological condition commonly seen in sports medicine in which the human heart is enlarged, and the resting heart rate is lower than normal. The athlete's heart is associated with physiological cardiac remodeling as a consequence of repetitive cardiac loading. [ 3 ]