Effect of dobutamine on skeletal muscle metabolism in patients with congestive heart failure.

Effect of dobutamine on skeletal muscle metabolism in patients with congestive heart failure.
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多巴酚丁胺对充血性心力衰竭患者骨骼肌代谢的影响。

DOI:
10.1016/0002-9149(90)90325-u
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发表时间:
1990
期刊:
The American journal of cardiology
影响因子:
--
通讯作者:
Wilson,JR
Wilson,JR
中科院分区:
--
文献类型:
--
作者:
Mancini,DM;Schwartz,M;Ferraro,N;Seestedt,R;Chance,B;Wilson,JR

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已知多巴酚丁胺可增加心力衰竭患者运动时的腿部血流量。然而,尚不确定增加的流量是否被输送到工作骨骼肌。在7名心力衰竭患者中,检查了多巴酚丁胺对静息和直立跖屈时小腿磷-31磁共振光谱(MRS)和股静脉血流量的影响。在每3秒一次的直立跖屈过程中,多巴酚丁胺增加股静脉血流量(对照组1.7 ± 0.1;多巴酚丁胺2.1 ± 1.0升/分钟; p < 0.05),并增加股静脉氧饱和度(对照组24 ± 5%;多巴酚丁胺31 ± 2%; p < 0.05),表明腿部总血流量改善。然而,多巴酚丁胺并没有改变全身V ~ O2与小牛无机磷酸盐与磷酸肌酸之间关系的斜率(对照组0.0054 ± 0.0039;多巴酚丁胺0.0056 ± 0.0032;差异不显著),也没有改变肌肉pH值,表明没有改善活动骨骼肌的血流量。这些发现表明,多巴酚丁胺不能改善心力衰竭患者工作骨骼肌的氧输送,尽管它能够增加心输出量和肢体血流量。
Dobutamine is known to increase leg blood flow during exercise in patients with heart failure. However, it is uncertain whether the increased flow is delivered to working skeletal muscle. In 7 patients with heart failure, the effects of dobutamine were examined on calf phosphorus-31 magnetic resonance spectroscopy (MRS) spectra and femoral vein blood flow during rest and upright plantar flexion. During upright plantar flexion every 3 seconds, dobutamine increased femoral venous blood flow (control 1.7 ± 0.1; dobutamine 2.1 ± 1.0 liters/min; p < 0.05) and increased femoral venous O2saturation (control 24 ± 5%; dobutamine 31 ± 2%; p < 0.05), indicating improved total leg blood flow. However, dobutamine did not change the slope of the relation between systemic V̇O2and the calf inorganic phosphate to phosphocreatine relation (control 0.0054 ± 0.0039; dobutamine 0.0056 ± 0.0032; difference not significant) and did not change muscle pH, suggesting no improvement in blood flow to active skeletal muscle. These findings suggest that dobutamine does not improve oxygen delivery to working skeletal muscle in patients with heart failure, despite its ability to increase cardiac output and limb blood flow.
DOI: 10.1161/01.cir.76.5.1009
发表时间: 1987-11-01
期刊: CIRCULATION
影响因子: 37.8
作者:
MASSIE, B;CONWAY, M;RAJAGOPALAN, B
通讯作者: RAJAGOPALAN, B
DOI: 10.1161/01.cir.56.4.528
发表时间: 1977-01-01
期刊: CIRCULATION
影响因子: 37.8
作者:
MIKULIC, E;COHN, JN;FRANCIOSA, JA
通讯作者: FRANCIOSA, JA
充血性心力衰竭患者运动期间骨骼肌营养流受损:由多巴酚丁胺的作用确定的心泵功能障碍的作用。
DOI: --
发表时间: 1984
影响因子: 2.8
作者:
John R. Wilson;Jack L. Martin;N. Ferraro
通讯作者: N. Ferraro
DOI: --
发表时间: 1985
期刊: Circulation
影响因子: 37.8
作者:
Chance,B;Clark,BJ;Nioka,S;Subramanian,H;Maris,JM;Argov,Z;Bode,H
通讯作者: Bode,H
DOI: 10.1016/0002-9149(88)90266-4
发表时间: 1988
期刊: The American journal of cardiology
影响因子: --
作者:
Mancini,DM;Ferraro,N;Tuchler,M;Chance,B;Wilson,JR
通讯作者: Wilson,JR