ABSTRACT
Objective To investigate the influence of intensive heart rate control on inflammatory factor and cardiac function in patients with chronic heart failure. Methods From January 2015 to December 2015 ,a total of 120 CHF patients in New York Heart Association(NYHA)functional classes Ⅱ to Ⅳ were enrolled and randomized into treatment group(n=60)and control group(n=60). All the patients were in stable situation af-ter conventional drug treatment. The patients in treatment group underwent intensive heart rate control for target HR (55~60 beats/min)through adjusting the dose of metoprolol sustained-release tablets. The concentration of C-reac-tion protein(CRP),interleukin-1β(IL-1β),interleukin-6(IL-6)and tumor necrosis factorα(TNF-α)were de-tected before and after 6-month treatment. The resting heart rate and the concentration of brain natriuretic peptide (BNP),left ventricular ejection fracetion(LVEF),left ventricular end diastolic diameter(LVEDD)and left ven-tricular end systolic dimension(LVEDD)were measured at the start and 6-months after treatment. Results After 6-month treatment,the resting heart rate of the patients in the treatment group decreased significantly compared with that of the control group(P<0.001). Inflammatory factors(CRP,IL-1β,IL-6 and TNF-α)levels decreased significantly compared with that of control group (P < 0.05). The echocardiography parameters (LVEDD and LVESD)and the concentration of BNP of the patients in the treatment group decreased significantly(P < 0.05), LVEF of treatment group increased significantly(P < 0.05). Conclusion Intensive heart rate control in patients with chronic heart failure can significantly reduce Inflammatory factor levels and improve the cardiac function.
ABSTRACT
Objective To investigate the influence of intensive heart rate control on inflammatory factor and cardiac function in patients with chronic heart failure. Methods From January 2015 to December 2015 ,a total of 120 CHF patients in New York Heart Association(NYHA)functional classes Ⅱ to Ⅳ were enrolled and randomized into treatment group(n=60)and control group(n=60). All the patients were in stable situation af-ter conventional drug treatment. The patients in treatment group underwent intensive heart rate control for target HR (55~60 beats/min)through adjusting the dose of metoprolol sustained-release tablets. The concentration of C-reac-tion protein(CRP),interleukin-1β(IL-1β),interleukin-6(IL-6)and tumor necrosis factorα(TNF-α)were de-tected before and after 6-month treatment. The resting heart rate and the concentration of brain natriuretic peptide (BNP),left ventricular ejection fracetion(LVEF),left ventricular end diastolic diameter(LVEDD)and left ven-tricular end systolic dimension(LVEDD)were measured at the start and 6-months after treatment. Results After 6-month treatment,the resting heart rate of the patients in the treatment group decreased significantly compared with that of the control group(P<0.001). Inflammatory factors(CRP,IL-1β,IL-6 and TNF-α)levels decreased significantly compared with that of control group (P < 0.05). The echocardiography parameters (LVEDD and LVESD)and the concentration of BNP of the patients in the treatment group decreased significantly(P < 0.05), LVEF of treatment group increased significantly(P < 0.05). Conclusion Intensive heart rate control in patients with chronic heart failure can significantly reduce Inflammatory factor levels and improve the cardiac function.
ABSTRACT
Objective To investigate the impact of paced QRS duration (pQRSd) on heart function in patients with right ventricular apical pacing. Methods Seventy-six patients with Ⅲ° atrioventricular block received pacemaker treatment were enrolled and randomized into group A (pQRSd 0.05). At 24 months after implanting, LAD、LVEDD、LVESD of group B increased significantly compared with those of group A [LAD,( 44.5 ± 6.2) mm vs (41.6 ± 5.1) mm, LVEDD, (52.7 ± 9.3) mm vs (48.2 ± 7.5) mm, LVESD, (37.5 ± 5.6) mm vs (33.8 ± 4.9)mm, each P 0.05)between two groups during 24-month follow-up. Conclusion The prolonged paced QRS duration has a detrimental effect on long-term cardiac function during RVA pacing in patients with Ⅲ°atrioventricular block.