Neuberger, "Effect of liver transplantation on QT interval
prolongation and autonomic dysfunction in end-stage liver disease," Hepatology, vol.
Electrocardiogram (ECG) (Figure 1) at admission demonstrated normal QT interval
and serum potassium was 5.2 mEq/L.
was prolonged and 2:1 AVB was suspected to be the so-called functional AVB, which develops due to prominently prolonged ventricular repolarization (QT 0.498 s, QTc 0.522).
The patient, aged 80 years, with a significant medical history (schizoaffective disorder and hypertension) presented a favourable evolution under treatment with aripiprazole after an acute myocardial infarction, but with QT interval
Patients who had MVP related with secondary causes (rheumatic heart disease, Marfan syndrome, Ehlers-Danlos syndrome, cardiomyopathy, infective endocarditis, atrial septal defect, anorexia nervosa etc.) and patients who were using drugs which prolong QT interval
or antiarrhythmic drugs were not included in the study.
Recent ventricular repolarization markers in resistant hypertension: Are they different from the traditional QT interval
? Am J Hypertens 2008; 21: 47-53.
[QT.sub.max], represents the longest QT interval
and [QT.sub.min] is the shortest QT interval
Keywords: Thalassaemia major, TM, Iron overload, Cardiac iron, Ferritin, QT interval
The QT interval
was measured from the beginning of the QRS complex to the end of the T wave and corrected for heart rate using the Bazett's formula: cQT = QTV (R-R interval).
There was also decrease in PR and QT intervals
. Since the heart rate is the major determinant of QT interval
, the QT interval
was reduced due to increased heart rate.
KEY WORDS: Long QT interval
; Ventricular tachyarrhythmia; Syncope; Beta blocker.
The slow heart rate and the prolonged PR and QT intervals
are consistent with hypothermia; the patient's temperature was 89[degrees] F.