Direct calorimetry using Swan-Ganz catheter for evaluation of general metabolic expenditure in acute cerebrovascular disease--comparison between direct Fick method and indirect calorimetry technique.
Oxygen consumption calculated by the direct Fick method using a Swan-Ganz catheter (D-VO2) and indirect calorimetry using a metabolic computer (ID-VO2), carbon dioxide production calculated by the latter method, and respiratory quotient were determined pre- and postoperatively in 12 patients with acute hypertensive intracerebral hemorrhage and eight patients with acute ruptured intracranial aneurysm. The mean D-VO2 value was slightly lower than the mean ID-VO2 value, but had a significantly positive correlation. The regression curve was very close to the line of identity. The total metabolic expenditure can be calculated from D-VO2 and daily urinary nitrogen excretion. Direct calorimetry using a Swan-Ganz catheter is a simple method to evaluate metabolic expenditure in acute hemorrhagic cardiovascular disease.
Touho
H
H
Department of Neurosurgery, Osaka Neurological Institute.
Karasawa
J
J
Shishido
H
H
Yamada
K
K
Shibamoto
K
K
D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001830:Body Surface Area; D002151:Calorimetry; D002245:Carbon Dioxide / Q000097:blood; D002407:Catheterization, Swan-Ganz; D002543:Cerebral Hemorrhage / Q000209:etiology / Q000378:metabolism*; D004734:Energy Metabolism; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000378:metabolism; D008875:Middle Aged; D010101:Oxygen Consumption; D012422:Rupture, Spontaneous
D002245:Carbon Dioxide