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. Author manuscript; available in PMC: 2009 Sep 2.
Published in final edited form as: Circulation. 2009 Jan 26;119(5):709–716. doi: 10.1161/CIRCULATIONAHA.107.760819

Table 2. Characteristics of Patients Found to Have Preoperative White Matter Brain Injury (PVL Group) Compared With Those Without Brain Injury (No PVL).

PVL (n=10) No PVL (n=16) P
BAS, n (%) 6 (60) 8 (50) NS
Gestational age, wk 39.0±1.2 38.9±1.1 NS
Birth weight, kg 3.41±0.59 3.50±0.64 NS
Head circumference, cm 33.1±1.6 33.8±1.6 NS
TGA with VSD, n (%) 3 (30) 3 (19) NS
Female, n (%) 5 (50) 6 (37) NS
Preoperative measures
 pH 7.44±0.06 7.43±0.06 NS
 Pco2, mm Hg 38.8±2.9 39.6±3.8 NS
 Po2, mm Hg 36.9±1.5 41.9±5.0 0.026
 Hemoglobin, g/dL 13.8±0.9 14.8±2.1 NS
 Base excess, mEq/L 2.43±3.5 1.63±2.9 NS
 Lactate 2.9±0.8 3.9±1.2 NS
ABGs per day, n 6.8±2.3 7.1±2.1 NS
Lowest O2 saturation, % 76.1±9.0 75.3±16.4 NS
Time to surgery, d 5.6±2.9 3.9±2.2 0.028

Values are expressed as mean±SD where appropriate. NS indicates P>0.15.

Student t testing was performed for continuous variables, and Fisher exact testing was performed on categorical variables to determine significance. Means are calculated based on values available from time of birth until time of surgical repair.

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