Leone D, Servillo G, De Robertis E, Rossano F, Tufano R
Cattedra di Anestesia e Rianimazione, Facoltà di Medicina e Chirurgia, Università degli Studi di Napoli Federico II.
Minerva Anestesiol. 1998 Sep;64(9):409-14.
A new pulmonary artery catheter and monitor for continuous cardiac output measurement (CCO), based on thermodilution principle, has been recently developed. Aim of our study was to evaluate the new system by comparing data obtained with the CCO with the standard bolus thermodilution method (TD).
Nineteen patients admitted in a medical intensive care unit were studied. In each patient 6 daily measurements of cardiac output (CO) were recorded using both the CCO and the TD. The parallel monitoring was continued for 48 h; 12 pair determinations were obtained in each patient with a total of 228.
Total CO ranged from 2.6 L/min to 10.6 L/min. The regression coefficient was 0.94. The bias of all measurements was 0.03 (SD: +1.22-1.16). The mean relative error was 1.52% +/- 29.9. Modifications in temperature or variations in heart rate did not change the agreement between the two techniques.
Our results confirm that CCO, although does not have all the characteristics of an ideal monitoring system, can be considered extremely useful and safe.
最近研发出了一种基于热稀释原理的用于连续心输出量测量（CCO）的新型肺动脉导管及监测仪。我们研究的目的是通过比较CCO获得的数据与标准团注热稀释法（TD）来评估该新系统。
对收入内科重症监护病房的19例患者进行研究。对每名患者使用CCO和TD每天记录6次心输出量（CO）。并行监测持续48小时；每名患者获得12对测定值，总共228对。
总CO范围为2.6升/分钟至10.6升/分钟。回归系数为0.94。所有测量的偏差为0.03（标准差：+1.22 - 1.16）。平均相对误差为1.52%±29.9。温度变化或心率改变并未改变两种技术之间的一致性。
我们的结果证实，CCO尽管不具备理想监测系统的所有特征，但可被认为极其有用且安全。
