Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Original Article
  • Published:

Incubator weaning in preterm infants and associated practice variation

Abstract

Objective:

To evaluate the relationship of weight of preterm infants when first placed into an open crib with days to full oral feedings, growth velocity and length of stay (LOS), and to identify unwarranted variation in incubator weaning after adjusting for severity indices.

Study Design:

A retrospective study using the ParadigmHealth neonatal database from 2003 to 2006 reviewed incubator weaning to an open crib in appropriate-for–gestational-age (AGA) infants from 22 to weeks gestation. Primary outcome measurements included days to full oral (PO) feeding, weight gain from open crib to discharge and length of stay. Models were severity adjusted. To understand hospital practice variation, we also used a regression model to estimate the weight at open crib for the top 10 volume hospitals.

Result:

In all 2908 infants met the inclusion criteria for the study. Their mean weight at open crib was 1850 g. On average every additional 100 g an infant weighed at the open crib was associated with increased time to full PO feeding by 0.8 days, decreased weight gained per day by 1 gram and increased LOS by 0.9 days. For the top 10 volume hospitals, severity variables alone accounted for 9% of the variation in weight at open crib, whereas the hospital in which the baby was treated accounted for an additional 19% of the variation.

Conclusion:

Even after controlling for severity, significant practice variation exists in weaning to an open crib, leading to potential delays in achieving full-volume oral feeds, decreased growth velocity and prolonged LOS.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1
Figure 2
Figure 3

Similar content being viewed by others

References

  1. American Academy of Pediatrics. Committee on Fetus and Newborn. Hospital discharge of the high-risk neonate-proposed guidelines. Pediatrics 1998; 102 (2): 411–417.

    Article  Google Scholar 

  2. Lemons JA, Lockwood CJ . Guidelines for Perinatal Care; Sixth Edition. American Academy of Pediatrics and The American College of Obstetricians and Gynecologists 2007.

  3. Forcada-Guex M, Pierrehumbert B, Borghini A, Moessinger A, Muller-Nix C . Early dyadic patterns of mother–infant interactions and outcomes of prematurity at 18 months. Pediatrics 2006; 118: e107–e114.

    Article  Google Scholar 

  4. Fenton TR . A new growth chart for preterm babies: Babson and Benda's chart updated with recent data and a new format. BMC Pediatrics 2003; 3 (13).

  5. Heimler R, Sumners JE, Grausz JP, Kien CL, Glaspey JC . Thermal environment change in growing premature infants: effect on general somatic growth and subcutaneous fat accumulation. Pediatrics 1981; 68: 82–86.

    CAS  PubMed  Google Scholar 

  6. Sauer P, Dane H, Visser H . New standards for neutral thermal environment of healthy very low birth-weight infants in week one of life. Arch Dis Child 1984; 59: 18–22.

    Article  CAS  Google Scholar 

  7. Bell EF, Rios GR . Air versus skin temperature servo control of infant incubators. J Pediatr 1983; 103 (6): 954–959.

    Article  CAS  Google Scholar 

  8. Ducker DA, Lyon AJ, Ross Russell R, Bass CA, McIntosh N . Incubator temperature control: effects on the very low birthweight infant. Arch Dis Child 1985; 60: 902–907.

    Article  CAS  Google Scholar 

  9. Medoff-Cooper B . Transition of the preterm infant to an open crib. J Obstet Gynecol Neonatal Nurs 1994; 23 (4): 329–336.

    Article  CAS  Google Scholar 

  10. West CR, Williams M, Weston PJ . Feasibility and safety of early transfer of premature infants from incubators to cots: a pilot study. J Paediatr Child Health 2005; 41 (12): 659–662.

    Article  CAS  Google Scholar 

  11. Berger I, Mimouni F, Kopolovitz R, Dollberg S . A randomized trial of weaning preterm infants at 1500 g from incubators: effect on failure to wean, weight gain and energy expenditure. E-PAS 2007 617933.29.

  12. Glass L, Silverman WA, Sinclair JC . Effect of the thermal environment on cold resistance and growth of small infants after the first week of life. Pediatrics 1968; 41: 1033–1046.

    CAS  PubMed  Google Scholar 

  13. Meyer EC, Garcia Coll CT, Lester BM, Boukydis CFZ, McDonough SM, Oh W . Interaction of preterm infants family-based intervention improves maternal psychological well-being and feeding. Pediatrics 1994; 93: 241–246.

    CAS  PubMed  Google Scholar 

  14. Gelhar D, Miserendino C, O'Sullivan P . Research from the research utilization project: environmental temperatures. J Obstet Gynecol Neonatal Nurs 1994; 23 (4): 341–344.

    Article  CAS  Google Scholar 

  15. Meier PP . Transition of the preterm infant to an open crib: process of the project group. J Obstet Gynecol Neonatal Nurs 1994; 23 (4): 321–326.

    Article  CAS  Google Scholar 

  16. Association of Women's Health, Obstetric, and Neonatal Nurses. Research-based practice project 1: transition of the preterm infant to an open crib. 1993.

  17. March of Dimes. https://www.marchofdimes.com More babies born prematurely, new report shows. White Plains, NY; December 5, 2007.

  18. Martin JA, Kung H-C, Mathews TJ, Hoyert DL, Strobino DM, Guyer B et al. Annual summary of vital statistics: 2006. Pediatrics 2008; 121 (4): 788–807.

    Article  Google Scholar 

Download references

Acknowledgements

No specific financial support was provided to any of the authors for their participation in this paper.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to R Schneiderman.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Schneiderman, R., Kirkby, S., Turenne, W. et al. Incubator weaning in preterm infants and associated practice variation. J Perinatol 29, 570–574 (2009). https://doi.org/10.1038/jp.2009.54

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/jp.2009.54

Keywords

This article is cited by

Search

Quick links