Table 4.

Common causes of mortality due to hypotension in preterm neonates.

Cause of mortality	Number (percentage)
LONS	207 (64.7%)
EONS	205 (64.1%)
NEC	140 (43.8%)
Perinatal asphyxia	135 (42.2%)
Previously undiagnosed CHD	67 (20.9%)
Hs PDA	56 (17.5%)
Hypovolemia	39 (12.2%)
Acute pulmonary hypertension	27 (8.4%)
Low systemic blood flow on day 1 of life	26 (8.1%)
Adrenal insufficiency	13 (4.1%)

Abbreviations: LONS, late onset neonatal sepsis; EONS, early onset neonatal sepsis; NEC, necrotizing enterocolitis; CHD, congenital heart disease; Hs PDA, hemodynamically significant patent ductus arteriosus.