differential diagnosis of a long QT intervalcongenital long QT syndromesacquired long QT syndromeshyperemesis gravidarumWe sought to evaluate the accuracy of a novel system for measuring fetal heart rate (FHR) and ST-segment changes using noninvasive electrodes on the maternal abdomen. Fetal ...
The QT interval on the electrocardiogram (ECG) has gained clinical importance, primarily because prolongation of this interval can predispose to a potentially fatal ventricular arrhythmia known as torsades de pointes. Multiple factors have been implicated in causing QT prolongation and torsades de pointes...
The QT interval on the electrocardiogram (ECG) has gained clinical importance, primarily because prolongation of this interval can predispose to a potentially fatal ventricular arrhythmia known as torsades de pointes. Multiple factors have been implicated in causing QT prolongation and torsades de pointes...
Arrhythmias in COVID 19 may be due to side effects of drug treatment such as hydroxychloroquine, which is known to prolong corrected QT Interval (QTc). Prolonged QTc is associated with ECG findings called Torsades de Pointes, which can potentially degenerate into ventricular fibrillation, associated...
The current evidence on the relationships between pupillometric indices, as proxies of the noradrenergic system, acute physical exercise, cardiorespiratory fitness, and cognitive performance is mixed. • Physical training- or fitness-related changes of the cerebrovascular system (i.e., operationalized vi...
Stage 2 hypertension is a more severe form of high blood pressure. It is characterized by blood pressure readings that consistently range from 140/90 mmHg or higher but less than 180/120. At this stage, you must definitely seek medication care, because prolonged stage 2 hypertension can be a...
is mildly short of breath and also starts sweating profusely. He takes two Tums which fail to relieve his symptoms and his wife calls 911. The ambulance comes within 10 minutes of the 911 call and they perform an in-field ECG. The automatic ECG interpretation reads "Acute anterior wall ST...
Several methods of heart rate adjustment have been proposed to increase the diagnostic accuracy of the exercise ECG. The maximal slope of the ST segment relative to heart rate is derived either manually or by computer. A second technique, ...
He developed palpitations and weakness 45 minutes after receiving ziprasidone. His QT interval was prolonged on ECG and returned to baseline after 72 hours. They concluded that performing an ECG before ziprasidone dosing should be considered.Sanaei-Zadeh,H.The American journal of emergency medicine...
The ECG interpretative statement "Prol onged QT" means different things to different people. It can be taken as a purely descriptive statement referring to the QT interval beyond a certain threshold. Alternatively, it could be taken to refer to a disease state (eg, congenital long QT syndrome...