American College of Obstetricians and Gynecologists. Practice bulletin no. 159: Management of preterm labor. Obstet Gynecol. 2016 Jan. 127 (1):e29-38. [Medline].
Ballard JL, Khoury JC, Wedig K, Wang L, Eilers-Walsman BL, Lipp R. New Ballard Score, expanded to include extremely premature infants. J Pediatr. 1991 Sep. 119 (3):417-23. [Medline].
Cummings JJ, Polin RA, Committee on Fetus and Newborn. Oxygen targeting in extremely low birth weight infants. Pediatrics. 2016 Aug. 138 (2):[Medline]. [Full Text].
World Health Organization. Safe Motherhood. Thermal Protection of the Newborn: A Practical Guide. Geneva, Switzerland: World Health Organization; 1997. [Full Text].
Stritzke A, Thomas S, Amin H, Fusch C, Lodha A. Renal consequences of preterm birth. Mol Cell Pediatr. 2017 Dec. 4 (1):2. [Medline].
Rudge MV, Calderon IM, Ramos MD, Abbade JF, Rugolo LM. Perinatal outcome of pregnancies complicated by diabetes and by maternal daily hyperglycemia not related to diabetes. A retrospective 10-year analysis. Gynecol Obstet Invest. 2000. 50 (2):108-12. [Medline].
Sibai BM, Caritis S, Hauth J, Lindheimer M, VanDorsten JP, MacPherson C, et al. Risks of preeclampsia and adverse neonatal outcomes among women with pregestational diabetes mellitus. National Institute of Child Health and Human Development Network of Maternal-Fetal Medicine Units. Am J Obstet Gynecol. 2000 Feb. 182 (2):364-9. [Medline].
Kogan MD, Alexander GR, Kotelchuck M, et al. Trends in twin birth outcomes and prenatal care utilization in the United States, 1981-1997. JAMA. 2000 Jul 19. 284 (3):335-41. [Medline].
Fritz MA. Infertility treatment and the multifetal gestation epidemic: too much of a good thing. Contemporary OB-GYN. Available at http://contemporaryobgyn.modernmedicine.com/contemporary-obgyn/news/clinical/obstetrics-gynecology-womens-health/infertility-treatment-and-multi. September 1, 2002; Accessed: July 1, 2015.
Boulet SL, Schieve LA, Nannini A, et al. Perinatal outcomes of twin births conceived using assisted reproduction technology: a population-based study. Hum Reprod. 2008 Aug. 23 (8):1941-8. [Medline].
Ziadeh SM. The outcome of triplet versus twin pregnancies. Gynecol Obstet Invest. 2000. 50 (2):96-9. [Medline].
Olausson PO, Cnattingius S, Haglund B. Teenage pregnancies and risk of late fetal death and infant mortality. Br J Obstet Gynaecol. 1999 Feb. 106 (2):116-21. [Medline].
Andres RL, Day MC. Perinatal complications associated with maternal tobacco use. Semin Neonatol. 2000 Aug. 5 (3):231-41. [Medline].
Suzuki K, Tanaka T, Kondo N, Minai J, Sato M, Yamagata Z. Is maternal smoking during early pregnancy a risk factor for all low birth weight infants?. J Epidemiol. 2008. 18 (3):89-96. [Medline].
Metz TD, Allshouse AA, Hogue CJ, et al. Maternal marijuana use, adverse pregnancy outcomes, and neonatal morbidity. Am J Obstet Gynecol. 2017 Oct. 217 (4):478.e1-478.e8. [Medline].
Creasy RK, Gummer BA, Liggins GC. System for predicting spontaneous preterm birth. Obstet Gynecol. 1980 Jun. 55 (6):692-5. [Medline].
Kent AL, Wright IM, Abdel-Latif ME, for the New South Wales and Australian Capital Territory Neonatal Intensive Care Units Audit Group. Mortality and adverse neurologic outcomes are greater in preterm male infants. Pediatrics. 2012 Jan. 129 (1):124-31. [Medline].
Roberts G, Anderson PJ, De Luca C, Doyle LW, for the Victorian Infant Collaborative Study Group. Changes in neurodevelopmental outcome at age eight in geographic cohorts of children born at 22-27 weeks' gestational age during the 1990s. Arch Dis Child Fetal Neonatal Ed. 2010 Mar. 95 (2):F90-4. [Medline].
Carlo WA, McDonald SA, Fanaroff AA, et al, for the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network. Association of antenatal corticosteroids with mortality and neurodevelopmental outcomes among infants born at 22 to 25 weeks' gestation. JAMA. 2011 Dec 7. 306 (21):2348-58. [Medline].
Ventolini G, Neiger R, Mathews L, Adragna N, Belcastro M. Incidence of respiratory disorders in neonates born between 34 and 36 weeks of gestation following exposure to antenatal corticosteroids between 24 and 34 weeks of gestation. Am J Perinatol. 2008 Feb. 25 (2):79-83. [Medline].
Finer NN, Horbar JD, Carpenter JH. Cardiopulmonary resuscitation in the very low birth weight infant: the Vermont Oxford Network experience. Pediatrics. 1999 Sep. 104 (3 pt 1):428-34. [Medline].
Barton L, Hodgman JE, Pavlova Z. Causes of death in the extremely low birth weight infant. Pediatrics. 1999 Feb. 103 (2):446-51. [Medline].
Dees E, Lin H, Cotton RB, Graham TP, Dodd DA. Outcome of preterm infants with congenital heart disease. J Pediatr. 2000 Nov. 137 (5):653-9. [Medline].
Robertson CM, Howarth TM, Bork DL, Dinu IA. Permanent bilateral sensory and neural hearing loss of children after neonatal intensive care because of extreme prematurity: a thirty-year study. Pediatrics. 2009 May. 123 (5):e797-807. [Medline].
Werner EF, Han CS, Savitz DA, Goldshore M, Lipkind HS. Health outcomes for vaginal compared with cesarean delivery of appropriately grown preterm neonates. Obstet Gynecol. 2013 Jun. 121 (6):1195-200. [Medline].
Pittman G. Vaginal delivery safer for many preemies: study. Reuters Health Information. Available at http://www.medscape.com/viewarticle/803871. May 8, 2013; Accessed: June 5, 2013.
Dubowitz LM, Dubowitz V, Goldberg C. Clinical assessment of gestational age in the newborn infant. J Pediatr. 1970 Jul. 77 (1):1-10. [Medline].
Hittner HM, Hirsch NJ, Rudolph AJ. Assessment of gestational age by examination of the anterior vascular capsule of the lens. J Pediatr. 1977 Sep. 91 (3):455-8. [Medline].
Conde-Agudelo A, Romero R. Cervical phosphorylated insulin-like growth factor binding protein-1 test for the prediction of preterm birth: a systematic review and metaanalysis. Am J Obstet Gynecol. 2016 Jan. 214 (1):57-73. [Medline].
Conde-Agudelo A, Romero R. Predictive accuracy of changes in transvaginal sonographic cervical length over time for preterm birth: a systematic review and metaanalysis. Am J Obstet Gynecol. 2015 Dec. 213 (6):789-801. [Medline].
Hummler H, Fuchs H, Schmid M. Automated adjustments of inspired fraction of oxygen to avoid hypoxemia and hyperoxemia in neonates - a systematic review on clinical studies. Klin Padiatr. 2014 Jul. 226 (4):204-10. [Medline].
Waitz M, Schmid MB, Fuchs H, Mendler MR, Dreyhaupt J, Hummler HD. Effects of automated adjustment of the inspired oxygen on fluctuations of arterial and regional cerebral tissue oxygenation in preterm infants with frequent desaturations. J Pediatr. 2015 Feb. 166 (2):240-4.e1. [Medline].
van Kaam AH, Hummler HD, Wilinska M, et al. Automated versus manual oxygen control with different saturation targets and modes of respiratory support in preterm infants. J Pediatr. 2015 Sep. 167 (3):545-50.e1-2. [Medline].
Van Zanten HA, Kuypers KLAM, Stenson BJ, Bachman TE, Pauws SC, Te Pas AB. The effect of implementing an automated oxygen control on oxygen saturation in preterm infants. Arch Dis Child Fetal Neonatal Ed. 2017 Sep. 102 (5):F395-9. [Medline].
Lal M, Tin W, Sinha S. Automated control of inspired oxygen in ventilated preterm infants: crossover physiological study. Acta Paediatr. 2015 Nov. 104 (11):1084-9. [Medline].
Dargaville PA, Sadeghi Fathabadi O, et al. Development and preclinical testing of an adaptive algorithm for automated control of inspired oxygen in the preterm infant. Arch Dis Child Fetal Neonatal Ed. 2017 Jan. 102 (1):F31-6. [Medline].
Plottier GK, Wheeler KI, Ali SK, et al. Clinical evaluation of a novel adaptive algorithm for automated control of oxygen therapy in preterm infants on non-invasive respiratory support. Arch Dis Child Fetal Neonatal Ed. 2017 Jan. 102 (1):F37-F43. [Medline].
[Guideline] Stark AR, for the American Academy of Pediatrics Committee on Fetus and Newborn. Levels of neonatal care. Pediatrics. 2004 Nov. 114 (5):1341-7. [Medline]. [Full Text].
Fuchs H, Lindner W, Leiprecht A, Mendler MR, Hummler HD. Predictors of early nasal CPAP failure and effects of various intubation criteria on the rate of mechanical ventilation in preterm infants of Arch Dis Child Fetal Neonatal Ed</i>. 2011 Sep. 96 (5):F343-7. [Medline].
Manley BJ, Owen LS, Doyle LW, et al. High-flow nasal cannulae in very preterm infants after extubation. N Engl J Med. Oct 10 2013. 369(15):1425-33. [Medline].
American Academy of Pediatrics, Committee on Fetus and Newborn. Respiratory support in preterm infants at birth. Pediatrics. 2014 Jan. 133 (1):171-4. [Medline]. [Full Text].
Fox S. AAP backs CPAP plus selective surfactants in premies. Medscape Medical News. Available at http://www.medscape.com/viewarticle/818416. December 30, 2013; Accessed: January 5, 2014.
DeMauro SB, Douglas E, Karp K, et al. Improving delivery room management for very preterm infants. Pediatrics. 2013 Oct. 132 (4):e1018-25. [Medline].
Fox S. Delivery room guidelines improve outcomes for preemies. Medscape Medical News. Available at http://www.medscape.com/viewarticle/811032. September 16, 2013; Accessed: September 23, 2013.
Engmann C, Wall S, Darmstadt G, Valsangkar B, Claeson M, for the participants of the Istanbul KMC Acceleration Meeting. Consensus on kangaroo mother care acceleration. Lancet. 2013 Nov 30. 382 (9907):e26-7. [Medline].
Eliakim A, Litmanovitz I, Nemet D. The role of exercise in prevention and treatment of osteopenia of prematurity: an update. Pediatr Exerc Sci. 2017 Oct 10. 1-6. [Medline].
Zhang R, Bo T, Shen L, Luo S, Li J. Effect of dexamethasone on intelligence and hearing in preterm infants: a meta-analysis. Neural Regen Res. 2014 Mar 15. 9 (6):637-45. [Medline]. [Full Text].
Capone K, Sriram S, Patton T, et al. Effects of chromium on glucose tolerance in infants receiving parenteral nutrition therapy. Nutr Clin Pract. 2017 Jun 1. 884533617711162. [Medline].
Kapoor V, Glover R, Malviya MN. Alternative lipid emulsions versus pure soy oil based lipid emulsions for parenterally fed preterm infants. Cochrane Database Syst Rev. 2015 Dec 2. 12:CD009172. [Medline].
Abrams SA, for the American Academy of Pediatrics Committee on Nutrition. Calcium and vitamin d requirements of enterally fed preterm infants. Pediatrics. 2013 May. 131 (5):e1676-83. [Medline].
Hand L. Guidelines: Preterm infants require vitamin D supplement. Medscape Medical News. Available at http://www.medscape.com/viewarticle/803253. April 29, 2013; Accessed: May 9, 2013.
Ohls RK, Christensen RD, Kamath-Rayne BD, et al. A randomized, masked, placebo-controlled study of darbepoetin alfa in preterm infants. Pediatrics. 2013 Jul. 132 (1):e119-27. [Medline].
Hand L. Darbepoetin reduces transfusion needs in preterm infants. Medscape Medical News. Available at http://www.medscape.com/viewarticle/806369. June 17, 2013; Accessed: June 24, 2013.
Von Kohorn I, Ehrenkranz RA. Anemia in the preterm infant: erythropoietin versus erythrocyte transfusion--it's not that simple. Clin Perinatol. 2009 Mar. 36 (1):111-23. [Medline].
Allen MC, Alexander GR, Tompkins ME, Hulsey TC. Racial differences in temporal changes in newborn viability and survival by gestational age. Paediatr Perinat Epidemiol. 2000 Apr. 14 (2):152-8. [Medline].
Alme AM, Mulhern ML, Hejkal TW, et al. Outcome of retinopathy of prematurity patients following adoption of revised indications for treatment. BMC Ophthalmol. 2008 Nov 13. 8:23. [Medline].
Anand KJ, Hall RW, Desai N, et al, for the NEOPAIN Trial Investigators Group. Effects of morphine analgesia in ventilated preterm neonates: primary outcomes from the NEOPAIN randomised trial. Lancet. 2004 May 22. 363 (9422):1673-82. [Medline].
Barrington KJ, Finer NN. Inhaled nitric oxide for respiratory failure in preterm infants. Cochrane Database Syst Rev. 2006 Jan 25. 25:CD000509. [Medline].
Beckerman KP. Protease inhibitor treatment of HIV-1-infected women may protect against extreme prematurity and very low birth weight. J Infect Dis. 2007 Oct 15. 196 (8):1270-1; author reply 1271. [Medline].
Bell EF. Preventing necrotizing enterocolitis: what works and how safe?. Pediatrics. 2005 Jan. 115 (1):173-4. [Medline].
Bell EF. When to transfuse preterm babies. Arch Dis Child Fetal Neonatal Ed. 2008 Nov. 93 (6):F469-73. [Medline].
Bernstein IM, Horbar JD, Badger GJ, Ohlsson A, Golan A. Morbidity and mortality among very-low-birth-weight neonates with intrauterine growth restriction. The Vermont Oxford Network. Am J Obstet Gynecol. 2000 Jan. 182 (1 pt 1):198-206. [Medline].
Bhandari V, Bergqvist LL, Kronsberg SS, Barton BA, Anand KJ, for the NEOPAIN Trial Investigators Group. Morphine administration and short-term pulmonary outcomes among ventilated preterm infants. Pediatrics. 2005 Aug. 116 (2):352-9. [Medline].
Borna S, Saeidi FM. Celecoxib versus magnesium sulfate to arrest preterm labor: randomized trial. J Obstet Gynaecol Res. 2007 Oct. 33 (5):631-4. [Medline].
Chiswick M. Infants of borderline viability: ethical and clinical considerations. Semin Fetal Neonatal Med. 2008 Feb. 13 (1):8-15. [Medline].
Clarke P, Mitchell SJ, Wynn R, et al. Vitamin K prophylaxis for preterm infants: a randomized, controlled trial of 3 regimens. Pediatrics. 2006 Dec. 118 (6):e1657-66. [Medline].
Cole CH. Prevention of prematurity: can we do it in America?. Pediatrics. 1985 Aug. 76 (2):310-2. [Medline].
Cotter AM, Garcia AG, Duthely ML, Luke B, O'Sullivan MJ. Is antiretroviral therapy during pregnancy associated with an increased risk of preterm delivery, low birth weight, or stillbirth?. J Infect Dis. 2006 May 1. 193 (9):1195-201. [Medline].
Crowther CA, Haslam RR, Hiller JE, Doyle LW, Robinson JS, for the Australasian Collaborative Trial of Repeat Doses of Steroids (ACTORDS) Study Group. Neonatal respiratory distress syndrome after repeat exposure to antenatal corticosteroids: a randomised controlled trial. Lancet. 2006 Jun 10. 367 (9526):1913-9. [Medline].
Doron MW, Veness-Meehan KA, Margolis LH, Holoman EM, Stiles AD. Delivery room resuscitation decisions for extremely premature infants. Pediatrics. 1998 Sep. 102 (3 pt 1):574-82. [Medline].
Doyle LW, Davis PG, Morley CJ, McPhee A, Carlin JB, for the DART Study Investigators. Outcome at 2 years of age of infants from the DART study: a multicenter, international, randomized, controlled trial of low-dose dexamethasone. Pediatrics. 2007 Apr. 119 (4):716-21. [Medline].
Doyle LW, Halliday HL, Ehrenkranz RA, Davis PG, Sinclair JC. Impact of postnatal systemic corticosteroids on mortality and cerebral palsy in preterm infants: effect modification by risk for chronic lung disease. Pediatrics. 2005 Mar. 115 (3):655-61. [Medline].
Durnwald CP, Walker H, Lundy JC, Iams JD. Rates of recurrent preterm birth by obstetrical history and cervical length. Am J Obstet Gynecol. 2005 Sep. 193 (3 pt 2):1170-4. [Medline].
El-Metwally D, Vohr B, Tucker R. Survival and neonatal morbidity at the limits of viability in the mid 1990s: 22 to 25 weeks. J Pediatr. 2000 Nov. 137 (5):616-22. [Medline].
Escobar GJ, Clark RH, Greene JD. Short-term outcomes of infants born at 35 and 36 weeks' gestation: we need to ask more questions. Semin Perinatol. 2006 Feb. 30 (1):28-33. [Medline].
Fanaroff AA, Stoll BJ, Wright LL, et al, for the NICHD Neonatal Research Network. Trends in neonatal morbidity and mortality for very low birthweight infants. Am J Obstet Gynecol. 2007 Feb. 196 (2):147.e1-8. [Medline].
Foix-L'Helias L, Marret S, Ancel PY, et al, for the EPIPAGE Study Group. Impact of the use of antenatal corticosteroids on mortality, cerebral lesions and 5-year neurodevelopmental outcomes of very preterm infants: the EPIPAGE cohort study. BJOG. 2008 Jan. 115 (2):275-82. [Medline].
Furdon SA, Lapitsky J, Diven S, Horgan MJ. Effect of standardized approach to the care of the extremely low birthweight infant. J Nurs Care Qual. 1997 Aug. 11 (6):42-51. [Medline].
Gracey K, Talbot D, Lankford R, Dodge P. Family teaching toolbox. Nasal cannula home oxygen. Adv Neonatal Care. 2003 Apr. 3 (2):99-101. [Medline].
Groh-Wargo S, Hovasi Cox J, Thompson M. Nutritional Care for High-Risk Newborns. 3rd ed. Los Angeles, CA: Taylor Trade Publishing; 2000.
Gross SJ, Anbar RD, Mettelman BB. Follow-up at 15 years of preterm infants from a controlled trial of moderately early dexamethasone for the prevention of chronic lung disease. Pediatrics. 2005 Mar. 115 (3):681-7. [Medline].
Hallenberger A, Poets CF, Horn W, Seyfang A, Urschitz MS, for the CLAC Study Group. Closed-loop automatic oxygen control (CLAC) in preterm infants: a randomized controlled trial. Pediatrics. 2014 Feb. 133 (2):e379-85. [Medline].
Halliday HL, Ehrenkranz RA, Doyle LW. Early (Cochrane Database Syst Rev</i>. 2009 Jan 21. 21:CD001146. [Medline].
Hellgren K, Hellstrom A, Jacobson L, Flodmark O, Wadsby M, Martin L. Visual and cerebral sequelae of very low birth weight in adolescents. Arch Dis Child Fetal Neonatal Ed. 2007 Jul. 92 (4):F259-64. [Medline].
Hodnett ED, Fredericks S, Weston J. Support during pregnancy for women at increased risk of low birthweight babies. Cochrane Database Syst Rev. 2010 Jun 16. 8 (6):CD000198. [Medline].
Holditch-Davis D, Merrill P, Schwartz T, Scher M. Predictors of wheezing in prematurely born children. J Obstet Gynecol Neonatal Nurs. 2008 May-Jun. 37 (3):262-73. [Medline].
Horbar JD, Badger GJ, Carpenter JH, et al, for the Members of the Vermont Oxford Network. Trends in mortality and morbidity for very low birth weight infants, 1991-1999. Pediatrics. 2002 Jul. 110 (1 pt 1):143-51. [Medline].
Huxley R, Owen CG, Whincup PH, et al. Is birth weight a risk factor for ischemic heart disease in later life?. Am J Clin Nutr. 2007 May. 85 (5):1244-50. [Medline].
Johnston CC, Stevens B, Pinelli J, et al. Kangaroo care is effective in diminishing pain response in preterm neonates. Arch Pediatr Adolesc Med. 2003 Nov. 157 (11):1084-8. [Medline].
Juul SE, McPherson RJ, Bauer LA, Ledbetter KJ, Gleason CA, Mayock DE. A phase I/II trial of high-dose erythropoietin in extremely low birth weight infants: pharmacokinetics and safety. Pediatrics. 2008 Aug. 122 (2):383-91. [Medline].
Klaus MH, Fanaroff AA. Care of the High-Risk Neonate. 5th ed. Philadelphia, PA: WB Saunders; 2001.
Kraybill EN. Ethical issues in the care of extremely low birth weight infants. Semin Perinatol. 1998 Jun. 22 (3):207-15. [Medline].
Kulmala T, Vaahtera M, Ndekha M, et al. The importance of preterm births for peri- and neonatal mortality in rural Malawi. Paediatr Perinat Epidemiol. 2000 Jul. 14 (3):219-26. [Medline].
Larsson PG, Fahraeus L, Carlsson B, Jakobsson T, Forsum U, for the Premature Study Group of the Southeast Health Care Region of Sweden. Late miscarriage and preterm birth after treatment with clindamycin: a randomised consent design study according to Zelen. BJOG. 2006 Jun. 113 (6):629-37. [Medline].
Lin HC, Su BH, Chen AC, et al. Oral probiotics reduce the incidence and severity of necrotizing enterocolitis in very low birth weight infants. Pediatrics. 2005 Jan. 115 (1):1-4. [Medline].
Lindstrom K, Winbladh B, Haglund B, Hjern A. Preterm infants as young adults: a Swedish national cohort study. Pediatrics. 2007 Jul. 120 (1):70-7. [Medline].
Linhart Y, Bashiri A, Maymon E, et al. Congenital anomalies are an independent risk factor for neonatal morbidity and perinatal mortality in preterm birth. Eur J Obstet Gynecol Reprod Biol. 2000 May. 90 (1):43-9. [Medline].
Lund C, Kuller J, Lane A, Lott JW, Raines DA. Neonatal skin care: the scientific basis for practice. Neonatal Netw. 1999 Jun. 18 (4):15-27. [Medline].
Maguire CM, Veen S, Sprij AJ, Le Cessie S, Wit JM, Walther FJ, et al. Effects of basic developmental care on neonatal morbidity, neuromotor development, and growth at term age of infants who were born at Pediatrics</i>. 2008 Feb. 121 (2):e239-45. [Medline].
Mahomed K, Bhutta Z, Middleton P. Zinc supplementation for improving pregnancy and infant outcome. Cochrane Database Syst Rev. 2007 Apr 18. 2:CD000230. [Medline].
Malloy MH, Freeman DH. Respiratory distress syndrome mortality in the United States, 1987 to 1995. J Perinatol. 2000 Oct-Nov. 20 (7):414-20. [Medline].
Biniwale M, Weiner A, Sardesai S, Cayabyab R, Barton L, Ramanathan R. Early postnatal weight gain as a predictor for the development of retinopathy of prematurity. J Matern Fetal Neonatal Med. 2017 Oct 1. 1-5. [Medline].
Marret S, Marpeau L, Zupan-Simunek V, Eurin D, Leveque C, Hellot MF, et al. Magnesium sulphate given before very-preterm birth to protect infant brain: the randomised controlled PREMAG trial*. BJOG. 2007 Mar. 114 (3):310-8. [Medline].
Martin JA, Hamilton BE, Osterman MJ, Driscoll AK, Mathews TJ. Births: Final Data for 2015. Natl Vital Stat Rep. 2017 Jan. 66 (1):1. [Medline].
Murphy SL, Mathews TJ, Martin JA, Minkovitz CS, Strobino DM. Annual summary of vital statistics: 2013-2014. Pediatrics. 2017 Jun. 139 (6):788-801. [Medline].
McCall EM, Alderdice FA, Halliday HL, Jenkins JG, Vohra S. Interventions to prevent hypothermia at birth in preterm and/or low birthweight infants. Cochrane Database Syst Rev. 2008 Jan 23. 1:CD004210. [Medline].
Camp M, Chang DC, Zhang Y, et al. Provider density and health system facility factors and their relationship to rates of pediatric perforated appendicitis in US counties. Arch Surg. 2010 Dec. 145 (12):1139-44. [Medline].
Mercer B, Milluzzi C, Collin M. Periviable birth at 20 to 26 weeks of gestation: proximate causes, previous obstetric history and recurrence risk. Am J Obstet Gynecol. 2005 Sep. 193 (3 pt 2):1175-80. [Medline].
Mestan KK, Marks JD, Hecox K, Huo D, Schreiber MD. Neurodevelopmental outcomes of premature infants treated with inhaled nitric oxide. N Engl J Med. 2005 Jul 7. 353 (1):23-32. [Medline].
Moore ML. Preterm labor and birth: what have we learned in the past two decades?. J Obstet Gynecol Neonatal Nurs. 2003 Sep-Oct. 32 (5):638-49. [Medline].
Murakami Y, Jain A, Silva RA, Lad EM, Gandhi J, Moshfeghi DM. Stanford University Network for Diagnosis of Retinopathy of Prematurity (SUNDROP): 12-month experience with telemedicine screening. Br J Ophthalmol. 2008 Nov. 92 (11):1456-60. [Medline].
Ohlsson A, Aher SM. Early erythropoietin for preventing red blood cell transfusion in preterm and/or low birth weight infants. Cochrane Database Syst Rev. 2006 Jul 19. 19:CD004863. [Medline].
Osborn DA, Evans N. Early volume expansion for prevention of morbidity and mortality in very preterm infants. Cochrane Database Syst Rev. 2004. 2:CD002055. [Medline].
Peltoniemi OM, Kari MA, Tammela O, et al, for the Repeat Antenatal Betamethasone Study Group. Randomized trial of a single repeat dose of prenatal betamethasone treatment in imminent preterm birth. Pediatrics. 2007 Feb. 119 (2):290-8. [Medline].
Pool V, Iskander J. Safety of influenza vaccination during pregnancy. Am J Obstet Gynecol. 2006 Apr. 194 (4):1200; author reply 1201. [Medline].
Rautava L, Lehtonen L, Peltola M, et al, for the PERFECT Preterm Infant Study Group. The effect of birth in secondary- or tertiary-level hospitals in Finland on mortality in very preterm infants: a birth-register study. Pediatrics. 2007 Jan. 119 (1):e257-63. [Medline].
Raydo LJ, Reu-Donlon CM. Putting babies "back to sleep": can we do better?. Neonatal Netw. 2005 Nov-Dec. 24 (6):9-16. [Medline].
Robertson CM, Watt MJ, Yasui Y. Changes in the prevalence of cerebral palsy for children born very prematurely within a population-based program over 30 years. JAMA. 2007 Jun 27. 297 (24):2733-40. [Medline].
Romero R. Prevention of spontaneous preterm birth: the role of sonographic cervical length in identifying patients who may benefit from progesterone treatment. Ultrasound Obstet Gynecol. 2007 Oct. 30 (5):675-86. [Medline].
Schieve LA, Cohen B, Nannini A, et al, for the Massachusetts Consortium for Assisted Reproductive Technology Epidemiologic Research (MCARTER). A population-based study of maternal and perinatal outcomes associated with assisted reproductive technology in Massachusetts. Matern Child Health J. 2007 Nov. 11 (6):517-25. [Medline].
Schreiber MD, Gin-Mestan K, Marks JD, Huo D, Lee G, Srisuparp P. Inhaled nitric oxide in premature infants with the respiratory distress syndrome. N Engl J Med. 2003 Nov 27. 349 (22):2099-107. [Medline].
Schulte J, Dominguez K, Sukalac T, Bohannon B, Fowler MG, for the Pediatric Spectrum of HIV Disease Consortium. Declines in low birth weight and preterm birth among infants who were born to HIV-infected women during an era of increased use of maternal antiretroviral drugs: Pediatric Spectrum of HIV Disease, 1989-2004. Pediatrics. 2007 Apr. 119 (4):e900-6. [Medline].
Simoes EA, Groothuis JR, Carbonell-Estrany X, et al, for the Palivizumab Long-Term Respiratory Outcomes Study Group. Palivizumab prophylaxis, respiratory syncytial virus, and subsequent recurrent wheezing. J Pediatr. 2007 Jul. 151 (1):34-42, 42.e1. [Medline].
Smith GN, Walker MC, Ohlsson A, O'Brien K, Windrim R, for the Canadian Preterm Labour Nitroglycerin Trial Group. Randomized double-blind placebo-controlled trial of transdermal nitroglycerin for preterm labor. Am J Obstet Gynecol. 2007 Jan. 196 (1):37.e1-8. [Medline].
Stevens B, Yamada J, Ohlsson A. Sucrose for analgesia in newborn infants undergoing painful procedures. Cochrane Database Syst Rev. 2004. 3:CD001069. [Medline].
Stupin JH, David M, Siedentopf JP, Dudenhausen JW. Emergency cerclage versus bed rest for amniotic sac prolapse before 27 gestational weeks. A retrospective, comparative study of 161 women. Eur J Obstet Gynecol Reprod Biol. 2008 Jul. 139 (1):32-7. [Medline].
Tyson JE, Kennedy KA. Trophic feedings for parenterally fed infants. Cochrane Database Syst Rev. 2005 Jul 20. 3:CD000504. [Medline].
van Wassenaer AG, Westera J, Houtzager BA, Kok JH. Ten-year follow-up of children born at Pediatrics</i>. 2005 Nov. 116 (5):e613-8. [Medline].
Ventolini G, Neiger R, Hood DL, Belcastro MR. Changes in the threshold of fetal lung maturity testing and neonatal outcome of infants delivered electively before 39 weeks gestation: implications and cost-effectiveness. J Perinatol. 2006 May. 26 (5):264-7. [Medline].
Westrup B, Bohm B, Lagercrantz H, Stjernqvist K. Preschool outcome in children born very prematurely and cared for according to the Newborn Individualized Developmental Care and Assessment Program (NIDCAP). Acta Paediatr. 2004 Apr. 93 (4):498-507. [Medline].
Wright VC, Schieve LA, Reynolds MA, Jeng G, Kissin D. Assisted reproductive technology surveillance--United States, 2001. MMWR Surveill Summ. 2004 Apr 30. 53 (1):1-20. [Medline].
Stone WL, Shah D, Hollinger SM. Retinopathy of prematurity: an oxidative stress neonatal disease. Front Biosci (Landmark Ed). 2016 Jan 1. 21:165-77. [Medline].
Ross GS, Foran LM, Barbot B, Sossin KM, Perlman JM. Using cluster analysis to provide new insights into development of very low birthweight (VLBW) premature infants. Early Hum Dev. 2016 Jan. 92:45-9. [Medline].
Sharma D. Golden 60 minutes of newborn's life: Part 1: Preterm neonate. J Matern Fetal Neonatal Med. 2017 Nov. 30 (22):2716-27. [Medline].
Preterm infant at 28 weeks' gestation. Note the small amount of ear cartilage and/or flattened pinna.
Preterm infant at 33 weeks' gestation. Note the increased cartilage, recoil, and outer ridge curving inward.
Preterm infant at 33 weeks' gestation. Note the presence of only an anterior crease.
Preterm infant at 28 weeks' gestation. No breast tissue is present, and the areolae are barely visible.
Preterm infant at 33 weeks' gestation. The breast tissue is less than 1 cm, and the areolae are raised and/or pigmented.
