Abstract
SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
Supraventricular tachycardia (SVT) is a type of tachyarrhythmia with a narrow QRS complex and regular rhythm (heart rate >100 bpm). These patients are often symptomatic and present to the emergency department (ED) in acute attacks called paroxysmal SVT (PSVT). Most SVTs are regular rhythms. It starts suddenly with the reentry mechanism in the majority of patients. 60% of the patients have reentry with Atrioventricular (AV) node, and 20% have reentry via bypass pathways. Coronary artery disease, anginal chest pain and dyspnea occur in patients due to tachycardia. Heart failure and pulmonary edema may occur with left ventricular dysfunction. Vagal maneuvers and adenosine appear to be the treatments of choice for termination of stable SVT.
Keywords:
Adenosine, Paroxysmal supraventricular tachycardia, Supraventricular tachycardia, Tachyarrhythmia, Vagal maneuvers.
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Authors:Bentham Science Books