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KMID : 0377619730240060653
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Korean Jungang Medical Journal
1973 Volume.24 No. 6 p.653 ~ p.658
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A Statistical Observation on the Amount of Chest Drain after Cardiac Surgery
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Abstract
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A statistical study on the chest drainage of patients who were undergone heart surgery was carried out.
Some interesting facts obtained through this study were as follows:
1) In this study the major causes of heart surgery were consisted of 19 different type of heart disease.
Among them, Mitral stenosis was 35.8% of the total cases. Patent ductus arteriosus was 27.2% and Tetrology of Fallot was 17.2% in sequence.
2) One hundred and sixty two patients, including eighty one women and the same number of men were chosen for this study.
In age distribution, 74.1 percent of all cases were between age of 0 and 29.
3) When the duration, of operation, amount of chest drain and transfusion amount were compared. between cases of open heart surgery and those closed heart surgery, the former showed statistically higher average duration and amount than those of the later.
4) The correlation coefficients between the duration of operation and amount of chest drain were r=+0.403 in cases of open heart surgery and r=+0.419 in cases of closed heart surgery, these were statistically highly significant (P<0.01) and the regression equation induced were shown as the following: (a) In cases of open heart surgery: y=15.22x-34.72 (b) In cases of closed heart surgery: y--16.11x31.55.
5) The correlation coefficient between transfusion amount and amount of chest drain were r= +0.555 in cases of open heart surgery cases and r=+0.465 in cases of closed heart surgery.
These two correlations showed significantly high p-value and following regression equation were obtained.
(a) In cases of open heart surgery; y=0.855x+19.102:
(b) In cases of closed heart surgery; y=0.598x+25.39.
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