Heart rate-independent prolongation of QTc interval in women with syndrome X. Clin Cardiol 1997; 20(4): 357–60Mammana C, Salomone OA, Kautzner J, Schwartzman RA, Kaski JC. Heart rate-independent prolongation of QTc interval in women with syndrome X. Clin Cardiol 1997;20:357-60. http:...
It is clear that abdominal obesity may be one of the risk factors for a prolonged QTc interval in premenopausal women.doi:10.1038/sj.ijo.0800521Park, J-JSwan, P DInt J Obes Relat Metab DisordInternational journal of obesity and related metabolic disorders : journal of the International ...
To our knowledge, few studies have reported the direct relationship between CRP levels and the QT interval in middle-aged population. The objective of the present study was to examine the association of CRP level with QT interval. Methods and results: A total of 2471 men and 2287 women from...
For women, the mean QTc interval (ms) of the intervention group changed by 6.7 (SE 2.8) versus 0.6 (SE 2.4) in the control group (P = .05), while for men, the change in the intervention group subjects was 2.7 (SE 2.2) versus 0.4 (SE 3.1) in the control subjects (P = .39)....
QT intervals were determined and corrected for differences in heart rate with use of the method of Bazett (QTc = QT/RR1/2). RESULTS: As expected, the mean QTc interval at baseline was longer for women than for men (mean +/- ... S Matsumura - 《Clinical Pharmacology & Therapeutics》 被...
The prolongation of the QTc interval resulted in worse prognosis for men, elderly patients, and patients with pre-existing cardiovascular disease. Conversely, the effect of the QTc on cardiovascular risk was insignificant for middle-aged women without cardiovascular disease. Prediction accuracy...
Several formulae, the Bazett, Fridericia, Framingham and Hodges formulae, correct QT (QTc) for heart rate variability and an interval of 4450 ms for men and 460 ms for women is generally accepted as upper limit of normal (Bazett, 1920; Fridericia, 1920; Hodges et al, 1983; Sagie et al...
The QTc interval refers to the normalized QT-time in an electrocardiogram (ECG) divided by the RR interval, representing the time it takes for the heart to repolarize after a heartbeat. AI generated definition based on:European Journal of Medicinal Chemistry,2020 ...
The 95% upper confidence limit for the mean 24-h QTc interval was 452 ms (men 439 ms, women 461 ms). The RR, QT and QTc intervals and the high frequency component of heart rate variability were greater during sleep. Both the QTc interval and the variability between hourly minimal and ...
You can use this QTc calculator to determine the corrected QT interval (QTc) in seconds in accordance with someone's heart rate (beats per minute). The QTc calculator relies on the formulas that are most commonly used to determine a QTc interval. How to use the corrected QT interval calcula...