Table 1.

Demographic data

	Min-Max	Mean±SD
Gestational age at birth (weeks)	36.2-40	37.37±0.95
Age (days)	3-28	6.28±5.03
Weight (kg)	2.1-3.8	2.47±0.33
Preoperative hemoglobin (g)	13.2-19.2	15.0±1.05
Estimated blood volume (mL)	189-342	222.62±29.52
Maximal allowable blood loss (mL)	2.80-72.65	28.55±13.62
Blood loss (mL)	10-90	25.85±17.39
Blood received (mL)	0-70	3.93±12.85
Total intravenous fluid received (mL)	27.20-214.90	102.98±35.38
Mean duration of surgery (min)	15-210	93.35±42.97
Mean total duration of procedure (min)	40-260	135.10±45.32