QTc dispersion(QTcd)was studied in 60 patienta with right ventricular pacing.The results show that:(1)QTcd after pacing was significantly Jess than thatbefore pacing(35.72±29.75ms vs 73.78±46.10ms,p【0.001)....QTc dispersion(QTcd)was studied in 60 patienta with right ventricular pacing.The results show that:(1)QTcd after pacing was significantly Jess than thatbefore pacing(35.72±29.75ms vs 73.78±46.10ms,p【0.001).The changes ofQTcd in patients with Ⅲ~* atrial-ventricular block(from 88.81±49.47ms to36.90±35.80ms)was significantly larger than that in those with sick sinussyndrome(from 58.75±34.87ms to 33.54±13.39ms),p【0.001.(2)The QTcdof syncope patients before pacing was larger then the average value(119.02±36.33ms vs 73.78±46.10ms,p【0.001).The mortality of the patients withQTcd≥60ms after pacing was higher than that of those with QTcd【60ms.p【0.005.The results suggest flint QTcd may be decreased significantly by rightventricular pacing,especially in pationts with Ⅲ~* atrial ventricular block.QTcd before and after pacing may be correlated with seriousness of illness andprognosis respectively.展开更多
文摘QTc dispersion(QTcd)was studied in 60 patienta with right ventricular pacing.The results show that:(1)QTcd after pacing was significantly Jess than thatbefore pacing(35.72±29.75ms vs 73.78±46.10ms,p【0.001).The changes ofQTcd in patients with Ⅲ~* atrial-ventricular block(from 88.81±49.47ms to36.90±35.80ms)was significantly larger than that in those with sick sinussyndrome(from 58.75±34.87ms to 33.54±13.39ms),p【0.001.(2)The QTcdof syncope patients before pacing was larger then the average value(119.02±36.33ms vs 73.78±46.10ms,p【0.001).The mortality of the patients withQTcd≥60ms after pacing was higher than that of those with QTcd【60ms.p【0.005.The results suggest flint QTcd may be decreased significantly by rightventricular pacing,especially in pationts with Ⅲ~* atrial ventricular block.QTcd before and after pacing may be correlated with seriousness of illness andprognosis respectively.
