Intravenous infusion of KC1 at a rate of 1.22 or 2.45 mEq per minute to anesthetized dogs frequently resulted in complete A-V block at a time when P waves were still recorded in the ECG. Furthermore, some of the observations suggest that in hyperkalemia a regular idioventricular rhythm may...
Ventricular premature complex (VPC): A spontaneous premature ventricular depolarization that originates from the ventricles, resulting in a QRS′ complex and T′ wave on the surface electrocardiogram (ECG) that have a different morphology (and duration) (Figure 1). ...
Echocardiography was performed using a Toshiba Aplio Artida ultrasound machine (Toshiba Medical Systems Corporation, Otawa, Tochigi, Japan) and a 5 mHz phased-array probe. Two-dimensional, M-mode and Doppler echocardiographic studies were performed using standard views with continuous ECG monitoring.44...
Her ECG showed leftaxis deviation and ST depression with inverted T waves (Figure 1A). Her chest radiograph showed mild cardiomegaly (Figure 1B). She was diagnosed with acute decompensated heart failure and transferred to cardiac intensive care unit. She showed uncontrolled hypertension, and her ...
FIELD: medicine.;SUBSTANCE: ECG with physical exertion is performed, and when ST segement depression of 1 mm and more and/or angina is detected, a three-week course of shock wave therapy is conducted. At that shock-wave therapy is performed in the mode of 100 pulses with energy density ...
ECGElectrocardiogramVentricular extrasystoles P waveP wave detectionPathological ECG signalThis work introduces a new method for P wave detection in ECG signals during ventricular extrasystoles. The authors of previous works which deal with detection of P waves tested their algorithms......
One or more fiducial points on a T-wave signal sensed from one or more intracardiac EGM or subcutaneous ECG signals are detected for estimating myocardial recovery time. Extra systolic stimulation pulses are delivered at an extra systolic interval based on a detected recovery time to effectively ...
One or more fiducial points on a T-wave signal sensed from one or more intracardiac EGM or subcutaneous ECG signals are detected for estimating myocardial recovery time. Extra systolic stimulation pulses are delivered at an extra systolic interval based on a detected recovery time to effectively ...
T wave aberration and further prolongation of the QT interval after a postextrasystolic pause were considered as warning signs preceding torsade de pointes in LQTS [15,16]. However, the prognostic significance of postextrasystolic repolarization changes of VPBs in patients without LQTS was less clea...
Attempts to define the genesis of the T wave change based on configuration most often fail. Importantly, misinterpretation of the etiology and, thus, the clinical significance of a given T wave abnormality may result in "iatrogenic ECG heart disease."...