A study of short term outcome of late preterm babies

Selvan Tamil, Saravanan P., Nagaraj M. S., Mrigendra Nath Tudu


Background: Late preterm babies born between 34 to <37 weeks of gestation are associated with adverse short term and long term outcomes and an increased burden on health care. Aim was to study the short term outcome of late preterm babies in comparison with term babies and to study the maternal risk factors involved in late preterm.

Methods: Prospective and descriptive study was conducted on the late preterm babies born at SIMS & RC over a period of 15 months from October 2015 to December 2016. Cases included were late preterm newborns and control was term newborns.

Results: Among late preterm babies, the common maternal risk factors observed was PIH in 35.3% (40/113), antepartum haemorrhage in 20.3% (23/113) and PPROM in 19.4% (22/113) of the cases. Based on gestational age, majority of them were between 35≤36 weeks in 38.9% (44/113). Based on birth weight, most of them were between 1.5-2.5 kg in 85.8% (97/113). Among gender majority of them were males in 56.6% (64/113) of the cases. Late preterm babies had more morbidities and mortality compared to term babies. The common morbidities observed were jaundice in 63.7% (72/113), feed intolerance in 28.3% (32/113), hypoglycemia in 27.4% (31/113) and sepsis in 22.1% (25/113) of the cases when compared to term babies jaundice were noted in 62% (1228/1978), sepsis in 5.7% (113/1978), hypoglycaemia in 3.4% (68/1978), respiratory distress in 3.1% (63/1978) of the cases respectively. The late preterm mortality was 1.7% (2/113) compared term mortality of 0.45% (9/1978). Overall late preterm mortality rate was 0.86% (2/2311) compared to term which was 3.89%(9/2311) of the total live births.

Conclusions: This study shows morbidity and mortality was high in late preterm babies compared to term babies with significant maternal risk factors. 


Late preterm, Preterm, PPROM, Term

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WHO,WORLD HEALTH STATISTICS:2016, Available at http;/ /www. /gho/ publications/ world health statistics /2016 /annex B/en. Accessed on 12 July 2016.

NFHS-4: Ministry of Health and Family Welfare, Govt. of India. Available at family-health-survey-2015-2016-nfhs-4. Accessed on 12 July 2016.

Roy KK, Baruah J, Kumar S, Malhotra N, Deorari AK, Sharma JB. The maternal antenatal profile and the immediate neonatal outcome in VLBW and ELBW babies. Indian J Pediatr. 2006;73:669-73.

Lawn JE. 4 million neonatal deaths: when? Where? Why? The Lancet. 2005;365(9462):891-900.

Basu S, Rathore P, Bhatia BD. Predictors of mortality in very low birth weight neonates in India. Singapore Med J. 2008;49:556-60.

Davidoff MJ, Dias T, Damus K. Changes in the gestational age distribution among U.S. singleton births: impact on rates of late preterm birth, 1992–2002. Semin Perinatol. 2006;30:8-15.

Tomashek KM, Mendoza CK, Davidoff MJ. Differences in mortality between late preterm and term singleton infants in the United States, 1995-2002. J Pediatr. 2007;151(5):450-6.

Sibai BM. Preeclampsia as a cause of preterm and late preterm (near term) births. Semin Perinatol. 2006;30:16-9.

Dobak WJ, Gardner MO. Late preterm gestation: Physiology of labour and implications for delivery. Clin Perinatol. 2006;33:765-77.

Roy NR. The mortality pattern of the hospitalised children in a tertiary care hospital of Kolkata. Indian J Community Medicine. 2008;33(3):187-9.

Hibbard JU, Wilkins I, Sun L. Consortium on safe labor. Respiratory morbidity in late preterms births. JAMA. 2010;304(4):419-25.

Mendoza CK, Tomashek KM, Kotelchuck M. Effect of late-preterm birth and maternal medical conditions on newborn morbidity risk. Pediatrics. 2008;121:223-32.

Dimitrou G, Fousaz S, Georgakis V. Determinants of morbidity in late preterm infants. Early Hum Dev. 2010;86:587-91.

Zullini MT, Bonati M, Sanvito E. Survival at nine neonatal intensive care units in Sao Paulo, Brazil. Paulista Collaborative Group on Neonatal Care. Rev Panam Salud Publica. 1997;2:303-9.

Bird T, Bronstein JM, Hall RW, Lowery CL, Nugent R, Mays GP. Late pretem infants: birth outcomes and health care utilization in the first year. Pedaitrics. 2010;126:3119.