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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.
[32] [33] Both ventricular tachycardia and ventricular fibrillation can prevent the heart from generating coordinated ventricular contractions, thereby failing to sustain adequate blood circulation. Less common types of arrhythmias occurring in cardiac arrest include pulseless electrical activity, bradycardia, and asystole. [30]
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited genetic disorder that predisposes those affected to potentially life-threatening abnormal heart rhythms or arrhythmias. The arrhythmias seen in CPVT typically occur during exercise or at times of emotional stress, and classically take the form of bidirectional ...
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.
There are many inherited conditions and heart diseases that can affect young people which can subsequently cause sudden death without advance symptoms. [ 16 ] Causes of SADS in young people include viral myocarditis , long QT syndrome , Brugada syndrome , Catecholaminergic polymorphic ventricular tachycardia , hypertrophic cardiomyopathy and ...
Tachycardia describes an abnormally rapid heart rate. By stringing these words together, you can see that POTS is a description of symptoms that commonly occur together, otherwise known as a ...
Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome caused by an impairment in the heart's ability to fill with and pump blood.. Although symptoms vary based on which side of the heart is affected, HF typically presents with shortness of breath, excessive fatigue, and bilateral leg swelling. [3]
Anterior infarcts, persistent ventricular tachycardia or fibrillation, development of heart blocks, and left ventricular impairment are all associated with poorer prognosis. [16] Without treatment, about a quarter of those affected by MI die within minutes and about forty percent within the first month. [16]
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