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. Author manuscript; available in PMC: 2021 May 15.
Published in final edited form as: Pediatr Res. 2020 Jun 23;89(5):1200–1207. doi: 10.1038/s41390-020-1030-3

Table 1:

Demographic, perinatal and clinical details

No Anesthesia (n=59) Anesthesia (n=25) p
Gestational Age (wks) 27 (26–28) 25 (24–27) <0.001
Birthweight (g) 1012 ± 256 787 ± 228 <0.001
 z-score −0.41 ± 0.96 −0.67 ± 1.03 0.25
Pre-natal steroids 54 (92) 23 (92) 0.94
Maternal Age at birth 27 (22–33) 29 (24–33) 0.22
Singleton 37 (63) 14 (56) 0.56
Male 24 (41) 15 (60) 0.10
Race
African-American 21 (36) 12 (48) 0.28
Caucasian 33 (56) 12 (48)
Asian 3 (5) 1 (4)
Biracial 2 (3) 0
Duration of Ventilation (hours) 24 (5–96) 696 (180–1103) <0.001
Confirmed Sepsis 14 (24) 14 (56) 0.004
PDA treated 15 (25) 18 (72) <0.001
NEC 2 (3) 3 (12) 0.13
Cranial Ultrasound
IVH grades 3–4 2 (3%) 4 (16%) 0.06
Cystic PVL 0 0
MRI abnormality score 0.08
Normal (0–3) 13 (22) 1 (4)
Mild (4–7) 24 (41) 10 (40)
Moderate (8–11) 8 (14) 7 (28)
Severe (>12) 7 (12) 6 (24)
Significant MRI Injury 15 (25) 13 (52) 0.07

Surgical and Anesthetic Data
Number of Surgeries --
None 59 (100) 0
One 14 (56)
Two or more 11 (44)
Total Surgical Duration (mins) -- 148 (63–244) --
Type of Surgery
 PDA Ligation -- 15 (60) --
 Retinopathy surgery -- 8 (32)
 Inguinal Surgery -- 5 (20) --
 Abdominal Surgery -- 5 (20) --
Number of Anesthetic Agents -- 2 (1–3) --
Type of Anesthetic
 Iso/Sevo/Des-flurane -- 16 (64) --
 Fentanyl -- 20 (80) --
 Propofol -- 9 (36) --
 Ketamine -- 5 (20) --
 Midazolam -- 4 (16) --
Anesthesia after discharge 8 (14) 11 (44) <0.001

N (%), mean ± SD, median (IQR). PMA-postmenstrual age, TEA-term equivalent age, PDA-Patent Ductus Arteriosus medically or surgically treated, NEC-necrotizing enterocolitis