Dautzenberg B, de Lattre J, Guĕnard H, Denjean A, Chaussain M, Sors Ch
Nouv Presse Med. 1980;9(31):2129-32.
Deficiencies in pulmonary circulation can economically be demonstrated at the patient's bedside by measuring the difference in CO2 between arterial blood and alveolar air, which reflects the air flow in non-perfused ventilated lung areas. The method does not inform on the cause of the deficiency, but normal values (i.e. lower than 10 %) indicate that pulmonary circulation is unimpaired, whereas high values suggest that it is reduced (emboli, capillary obstruction by leukocytes). That the method is valid is shown by the parallelism observed between the percentage air flow in non-perfused ventilated areas and the angiographic and anatomical findings.
通过测量动脉血与肺泡气之间的二氧化碳差值，可在患者床边简便地证实肺循环的缺陷，该差值反映了未灌注通气肺区域的气流情况。此方法无法告知缺陷的原因，但正常数值（即低于10%）表明肺循环未受损，而高数值则提示肺循环减少（栓子、白细胞导致的毛细血管阻塞）。非灌注通气区域的气流百分比与血管造影及解剖学结果之间观察到的平行关系表明该方法是有效的。
