Department of Cardiovascular Surgery, Okayama University Hospital, Okayama, Japan.
Artif Organs. 2009 Nov;33(11):896-903. doi: 10.1111/j.1525-1594.2009.00945.x.
Careful rewarming of perfusion blood following cardiopulmonary bypass surgery is critical to a successful outcome, but the optimal rewarming strategy is not clear. The purpose of this study was to derive a formula for a rewarming index (defined as [rewarming time x perfusion flow]/[body weight x body surface area]) that would enable the calculation of the ideal rewarming conditions for pediatric cardiopulmonary perfusion. We retrospectively investigated 220 pediatric cardiopulmonary bypass operations conducted from July 2005 to June 2008 in Okayama University Hospital, Japan. We determined the formula as Phi = (T x Q)/(R x S) = |0.9127P - 0.0152|, where Phi = rewarming index, T = rewarming time (min), Q = perfusion volume (L), R = body weight (kg), S = body surface area (m(2)), and P = temperature gap (right angle). The formula will help those who perform pediatric cardiopulmonary bypass surgery to establish ideal perfusion flow conditions and to control physiological temperature during rewarming.
小心复温在心肺转流手术后是至关重要的，以获得一个成功的结果，但最佳的复温策略尚不清楚。本研究的目的是推导一个复温指数公式（定义为[复温时间×灌注流量]/[体重×体表面积]），这将使计算小儿心肺灌注的理想复温条件成为可能。我们回顾性地调查了 2005 年 7 月至 2008 年 6 月在日本冈山县立大学医院进行的 220 例小儿心肺转流手术。我们确定的公式为 Phi =（T x Q）/（R x S）= |0.9127P - 0.0152|，其中 Phi =复温指数，T =复温时间（分钟），Q =灌注量（L），R =体重（kg），S =体表面积（m（2）），和 P =温度差（直角）。该公式将有助于进行小儿心肺转流手术的人员建立理想的灌注流量条件，并控制复温过程中的生理温度。
