…or fracture of the leads. External causes are less common and include electrolyte disorders, metabolic disorders, hypoxemia, antiarrhythmic drugs, or electromagnetic disturbance caused by other…

…isoelectric; this occurs if there are electrical potential differences in the myocardium by the end of the QRS complex (it typically causes J point depression)…

…the uterus should be manually displaced to the woman's left side (Figure 1). Additional offloading of the vena cava can be accomplished using a…

…1). This is possible by using two different sets of piezoelectric crystals; one set for sending ultrasound and the other for analyzing reflected sound waves…

…from right anterior (V1) to left lateral (V6), but regrettably, the limb leads are not. Instead, the limb leads are displayed in two groups of…

…one side to the other, as illustrated in Figure 2. The sequence of activation goes from right to left and then from left to right…

…12 seconds), provided that other causes of right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy…

…12 seconds), provided that other causes of right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy…

…wave infarction) Lead Definition of pathological Q wave Normal variants V2–V3 ≥0,02 s or QS complex None All other leads ≥0,03 s…

…the specificity was lower for fragmented QRS (89% vs 99%). The absence of fragmented QRS has a high negative predictive value (93%) for myocardial infarction…