1. Beale PL, McMichan JC, Marsh MB, Sill JC, Souther PA (1982) Continuous monitoring of mixed venous saturation in critically ill patients. Anesth Analg 61:513
2. Cain SM (1977) Arterial lactate response in dogs made apneic of breathing nitrogen. J Appl Physiol 42:39
3. Connors AF Jr, McCaffree DR, Gray BA (1983) Evaluation of right-heart catheterization in the critically ill patient without acute myocardial infarction. N Engl J Med 308:263
4. Del Guerico LRM, Commaraswamy RP, Feins NR, Wollmann SB, State D (1964) Pulmonary arteriovenous admixture and the hyperdynamic vascular state in surgery for portal hypertension. Surgery 56:57
5. Fick A (1870) Über die Messung des Blutquantums in den Herzventrikeln. Sitzungsbericht Phys Med Ges Würzburg. Bd II:XVI