Premium
Central haemodynamics and oxygen transport during CPPV with frequencies of 16 and 8 times per minute
Author(s) -
Vuori A.
Publication year - 1986
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1986.tb02412.x
Subject(s) - medicine , hemodynamics , oxygen transport , anesthesia , oxygen , chemistry , organic chemistry
During the weaning period after 18 h of mechanical ventilation following open‐heart surgery, central haemodynamics, systemic oxygen transport and total oxygen consumption were assessed in a total of 11 patients receiving continuous positive pressure ventilation. Mechanical ventilatory rates of 16 and 8 times per minute were studied. Systemic arterial pressure, cardiac index, stroke volume index, left ventricular stroke work index, rate‐pressure‐product, and systemic oxygen transport were observed to be higher during the lower ventilatory rate. Because transmural right atrial and pulmonary capillary wedge pressures were also higher during ventilation with a frequency of eight times per minute, the lower frequency may impede venous return less. This might explain the differences found in central haemodynamics between the two ventilation frequencies.