His baseline electrocardiogram (ECG) demonstrated a normal sinus rhythm and a QT/QTc of 484/475 milliseconds at a pulse of 58 beats per minute. The patient was given 20 mg intramuscular ziprasidone for agitation. He developed palpitations and weakness 45 minutes after receiving ziprasidone. His ...
Abbreviations ECG electrocardiogram HR heart rate QT QT interval QTc QT interval corrected for heart rate Sorry, something went wrong. Please try again and make sure cookies are enabledReferences 1 H.C. Bazett An analysis of the time-relations of electrocardiograms Heart, 7 (1920), p. 353 Goog...
Antipsychotic drugs: prolonged QTc interval, torsade de pointes, and sudden death. The authors review the mechanisms and establish the risk of torsade de pointes and sudden death with antipsychotic drugs. They present a review of original... AH Glassman,JT Bigger - 《Am.j.psychiatry》 被引量:...
Age trends were apparent for the QTc interval, QRS axis, and indices of left ventricular hypertrophy. Amplitudes in the left precordial leads showed a substantial increase in the older age groups for women, but not for men. Sex-dependent differences were apparent for most ECG parameters. All ...
HD A36yearoldwomanwithrecurrentblackouts A60yearoldmalewith2hoursof“crushing”chestpainsuddenlycollapses A72yearoldmanwithapermanentpacemaker Whatistherhythm? DualchamberpacerwithanICD A25yearoldmanwithboutsoftachycardia shortPRinterval,lessthan3smallsquares(120ms) slurredupstroketotheQRSindicatingpre-excitation...
In the subgroup of patients above 15 years and without beta blocker treatment, the sex effect (female minus male) on QTci interval duration was 17 ms (4.1; 29.9) in LQT1 patients. QTc duration was not different between sex in LQT2 and in LQT3 patients (mean difference 3 ms (21.6; ...
Also the mean QRS duration in female was significantly smaller than male (p = 0.03). There were no statistically significant differences in the mean R/T ratio, QTc interval, Tpeak-end duration between subgroups, six postures and three lead (p > 0.05).Postures, electrodes location and cardiac...
The repolarization effects of (+)- and (+/-)-sotalol on the QTc interval however were comparable over the same dose range. The beta-adrenoceptor blocking activity and repolarization effects of sotalol appear to be unrelated.GDJohnstonMBFinch...
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which was found to be significantly underperforming.ConclusionsIn patients with LBBB, replacing of the QRS duration after deriving the QTc interval with a fixed value of 88ms for female and 95ms for male provides a simple and reliable method for predicting the QTc before the development of LBBB....