Open heart surgery has been performed on 20 patients, using hemodilution principle under the moderate hypodermiafrom Dec. 1975 through Aug. 1977 at the Department of Thoracic and Cardiovascular Surgery, Kyungpook National University School of Medicine.
All these patients, body , surface area ranged from 0.53 to 1.67 M^(2), were divided into two groups as a child group (below 15 yrs) and a adult group (above 15 yrs).
The oxygenator were primed with fresh ACD blood, 5 per cent dextrose, Hartmann´s solution, 15 per cent mannitol, sodium bicarbonate, dexamethasone and antibiotics.
The average flow rate was 2.0 L/M^(2)/min. in child group and 2.3L/M^(2)/min. in adult group.
The degree of hemodilution in child and adult group was 30.7% and 29.3% respectively. The minimal value of rectal temperature was 30.8±0.7C in child group and 30.0±1.5℃ in adult group.
We studied the changes of hemodynamic status, blood components, electrolyte, acid-base status, blood lactic acid and urine output during and after cardiopulmonary bypass.
|