Tan L B
Lancet. 1986 Dec 13;2(8520):1360-3. doi: 10.1016/s0140-6736(86)92006-4.
In 63 patients with severe acute or chronic heart failure maximum cardiac performance was determined by calculation of the maximum hydraulic power output achieved by the heart during dobutamine challenge. After one year, all but 3 of the 23 patients with maximum cardiac power output (Wmax) less than the normal resting value of 1 W had died of progressive heart failure. Of the 40 with Wmax more than 1 W, all but 4 (who died suddenly) survived longer than one year. Hydraulic power output is a clinically important measure of cardiac pumping performance and a maximum power output value below the normal resting value indicates that long-term survival is unlikely.
在63例严重急性或慢性心力衰竭患者中，通过计算多巴酚丁胺激发试验期间心脏达到的最大水力功率输出，来确定最大心脏功能。一年后，23例最大心脏功率输出（Wmax）低于正常静息值1瓦的患者中，除3例之外，其余均死于进行性心力衰竭。在Wmax超过1瓦的40例患者中，除4例（猝死）之外，其余均存活超过一年。水力功率输出是心脏泵血功能的一项重要临床指标，最大输出功率值低于正常静息值表明长期存活的可能性不大。
