We report a 15-year-old girl who presented with syncope and sinus bradycardia, low voltage, prolonged QT interval and first degree atrioventricular block on electrocardiogram due to iatrogenic hypothyroidism.
Electrocardiography showed sinus bradycardia, low voltage, first degree atrioventricular block (PR interval was 0.
The high prevalence rates of disorders like bradycardia, sick sinus syndrome (SSS), Atrioventricular blocks (AV Block), sudden cardiac attack and atrial fibrillation will boost the growth of the pacemakers market.
Although, it is considered as a benign anomaly it may lead to such complications as acute myocardial infarction, ventricular tachycardia, syncope, atrioventricular blocks and sudden cardiac death (2,3).
It then outlines recognizing types of arrhythmias and atrioventricular blocks, with information on pathophysiology, causes, symptoms, and interventions; the effects of electrolyte imbalances and drugs; treatments; and 12-lead ECG and disorders it diagnoses.
Complete with examples and cartoons, this compact reference primarily covers the practicalities of conducting and interpreting electrocardiograms, including the basic theories, arrhythmias of the sinus node, atrial, junctional, ventricular and atrioventricular varieties, atrioventricular blocks, ECG effects of electrolyte imbalances, ECG effects of antiarrhythmics, pacemakers and ICDs, basic 12-lead electrocardiography, and advanced electrocardiography.