Bålfors E, Häggmark S, Ariola S, Biber B, Pontèn J, Reiz S
Clin Physiol. 1983 Oct;3(5):469-76. doi: 10.1111/j.1475-097x.1983.tb00855.x.
The continuous thermodilution technique for measuring blood flow in the range 50-300 ml/min was evaluated in vitro. Experiments indicated that thermotransport within the catheter from the indicator line to the mixing thermistor exists. The resulting error in calculated thermodilution flow will increase with increasing flow rate. A correction factor for thermal transport, Ft, obtained from a blood circulation model was incorporated in a modified formula for calculation of thermodilution flow. Flows derived with the standard Ganz formula were significantly lower than timed volumetric flows, whereas flows obtained with the modified formula agreed with volumetric flow. The coefficient of variation for four consecutive measurements was 3.4%.
对用于测量50 - 300毫升/分钟血流量的连续热稀释技术进行了体外评估。实验表明，导管内从指示剂线到混合热敏电阻存在热传递。计算热稀释流量时产生的误差会随着流速增加而增大。从血液循环模型获得的热传递校正因子Ft被纳入热稀释流量计算的修正公式中。用标准甘兹公式得出的流量显著低于定时容积流量，而用修正公式得出的流量与容积流量相符。连续四次测量的变异系数为3.4%。
