Objective To evaluate left univentricular (LUV) pacing for cardiac resynchronization therapy (CRT) using a rate-adaptive atrioven- tricular delay (RAAVD) algorithm to track physiological atrioventricular delay ...Objective To evaluate left univentricular (LUV) pacing for cardiac resynchronization therapy (CRT) using a rate-adaptive atrioven- tricular delay (RAAVD) algorithm to track physiological atrioventricular delay (AVD). Methods A total of 72 patients with congestive heart failure (CHF) were randomized to RAAVD LUV pacing versus standard biventricular (BiV) pacing in a 1 : 1 ratio. Echocardiography was used to optimize AVD for both groups. The effects of sequential BiV pacing and LUV pacing with optimized A-V (right atrio-LV) delay using an RAAVD algorithm were compared. The standard deviation (SD) of the S/R ratio in lead VI at five heart rate (HR) segments (Rs/R-SD5), defined as the "tracking index," was used to evaluate the accuracy of the RAAVD algorithm for tracking physiological AVD. Results TheQRS complex duration (132 ± 9.8 vs. 138± 10ms, P 〈 0.05), the time required for optimization (21 ±5 vs. 50±8min, P〈 0.001), the mitral regurgitant area (1.9 ± 1.1 vs. 2.5 ± 1.3 em2, P 〈 0.05), the interventricular mechanical delay time (60.7 ± 13.3 ms vs. 68.3 ± 14.2 ms, P 〈 0.05), and the average annual cost (13,200 ± 1000 vs. 21,600 ± 2000 RMB, P 〈 0.001) in the RAAVD LUV pacing group were significantly less than those in the standard BiV pacing group. The aortic valve velocity-time integral in the RAAVD LUV pacing group was greater than that in the standard BiV pacing group (22.7 ± 2.2 vs. 21.4 ± 2.1 cm, P 〈 0.05). The Rs/R-SD5 was 4.08 ± 1.91 in the RAAVD LUV pacing group, and was significantly negatively correlated with improved left ventricular ejection fraction (LVEF) (ALVEF, Pearson's r = -0.427, P = 0.009), and positively correlated with New York Heart Association class (Spearman's r - 0.348, P 0.037). Conclusions RAAVD LUV pacing is as effective as standard BiV pacing, can be more physiological than standard BiV pacing, and can de- crease the average annual cost of CRT.展开更多
Objective:To observe the curative effect of Zishengukang Pill(滋肾骨康丸) on delayed union of fracture.Methods:Sixty-four patients with delayed union of fracture were randomly divided into a control group of 32 cases ...Objective:To observe the curative effect of Zishengukang Pill(滋肾骨康丸) on delayed union of fracture.Methods:Sixty-four patients with delayed union of fracture were randomly divided into a control group of 32 cases treated with Western medicine and a treatment group of 32 cases treated with Western medicine and Zishengukang Pill.After 3 courses of treatment with 30 days as a course,the curative effects in the two groups were evaluated and their clinical symptoms,union rate and union time of fracture were compared.Results:The treatment resulted in cure in 25 cases,improvement in 6 cases and ineffectiveness in 1 case with the effective rate at 96.8% in the treatment group,higher than 81.3% in the control group(P<0.05).The union rate of fracture in the treatment group was higher than that in the control group(34.3% vs.12.5%,P<0.05).The union time of fracture in the treatment group was shorter than that in the control group((4.0±1.7) months vs.(5.0±1.4) months,P<0.05).Conclusion:Zishengukang Pill with obvious curative effect in the treatment of delayed union of fracture is worth popularizing.展开更多
文摘Objective To evaluate left univentricular (LUV) pacing for cardiac resynchronization therapy (CRT) using a rate-adaptive atrioven- tricular delay (RAAVD) algorithm to track physiological atrioventricular delay (AVD). Methods A total of 72 patients with congestive heart failure (CHF) were randomized to RAAVD LUV pacing versus standard biventricular (BiV) pacing in a 1 : 1 ratio. Echocardiography was used to optimize AVD for both groups. The effects of sequential BiV pacing and LUV pacing with optimized A-V (right atrio-LV) delay using an RAAVD algorithm were compared. The standard deviation (SD) of the S/R ratio in lead VI at five heart rate (HR) segments (Rs/R-SD5), defined as the "tracking index," was used to evaluate the accuracy of the RAAVD algorithm for tracking physiological AVD. Results TheQRS complex duration (132 ± 9.8 vs. 138± 10ms, P 〈 0.05), the time required for optimization (21 ±5 vs. 50±8min, P〈 0.001), the mitral regurgitant area (1.9 ± 1.1 vs. 2.5 ± 1.3 em2, P 〈 0.05), the interventricular mechanical delay time (60.7 ± 13.3 ms vs. 68.3 ± 14.2 ms, P 〈 0.05), and the average annual cost (13,200 ± 1000 vs. 21,600 ± 2000 RMB, P 〈 0.001) in the RAAVD LUV pacing group were significantly less than those in the standard BiV pacing group. The aortic valve velocity-time integral in the RAAVD LUV pacing group was greater than that in the standard BiV pacing group (22.7 ± 2.2 vs. 21.4 ± 2.1 cm, P 〈 0.05). The Rs/R-SD5 was 4.08 ± 1.91 in the RAAVD LUV pacing group, and was significantly negatively correlated with improved left ventricular ejection fraction (LVEF) (ALVEF, Pearson's r = -0.427, P = 0.009), and positively correlated with New York Heart Association class (Spearman's r - 0.348, P 0.037). Conclusions RAAVD LUV pacing is as effective as standard BiV pacing, can be more physiological than standard BiV pacing, and can de- crease the average annual cost of CRT.
文摘Objective:To observe the curative effect of Zishengukang Pill(滋肾骨康丸) on delayed union of fracture.Methods:Sixty-four patients with delayed union of fracture were randomly divided into a control group of 32 cases treated with Western medicine and a treatment group of 32 cases treated with Western medicine and Zishengukang Pill.After 3 courses of treatment with 30 days as a course,the curative effects in the two groups were evaluated and their clinical symptoms,union rate and union time of fracture were compared.Results:The treatment resulted in cure in 25 cases,improvement in 6 cases and ineffectiveness in 1 case with the effective rate at 96.8% in the treatment group,higher than 81.3% in the control group(P<0.05).The union rate of fracture in the treatment group was higher than that in the control group(34.3% vs.12.5%,P<0.05).The union time of fracture in the treatment group was shorter than that in the control group((4.0±1.7) months vs.(5.0±1.4) months,P<0.05).Conclusion:Zishengukang Pill with obvious curative effect in the treatment of delayed union of fracture is worth popularizing.