This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Pridham, K. Articles by O’Brien, M. Search for Related Content PubMed PubMed Citation Articles by Pridham, K. Articles by O’Brien, M. Social Bookmarking                         What's this?

Exploration of the Contribution of Biobehavioral Variables to the Energy Expenditure of Preterm Infants

School of Nursing, University of Wisconsin–Madison.

Abhik Bhattacharya, MS

General Clinical Research Center, University of Wisconsin–Madison Medical School.

Suzanne Thoyre, PhD, RN

School of Nursing, University of North Carolina, Chapel Hill.

Deborah Steward, PhD, RN

College of Nursing, Ohio State University, Columbus.

Janine Bamberger, MS, RD

nutrition services, Aurora Health Care Metro Region and Aurora Sinai Medical Center Neonatal Intensive Care Unit, Milwaukee, Wisconsin.

Jonathan Wells, PhD

Childhood Nutrition Research Centre, Institute of Child Health, London.

Christopher Green, MD

University of Wisconsin–Madison Medical School.

Frank Greer, MD

University of Wisconsin– Madison Medical School.

Patricia Green-Sotos, BS, RN

Special Care Nursery, Meriter Hospital, Madison, Wisconsin.

Matthew O’Brien, BS, RRT, RPFT

Pulmonary Function Laboratory, University Hospitals, Madison, Wisconsin.

Variation in energy expended by preterm infants may be due to infant maturity and history of resolved acute lung disease (respiratory distress syndrome [RDS]) as well as growth, caloric intake, and activity. Indirect calorimetry was used in this exploratory, short-term longitudinal study to estimate energy expenditure (EE) from measures of inspired and expired O2 and CO2.The sample included 35 assessments for 10 preterm infants (5 with and 5 without RDS history). Lung disease history (resolved RDS, no RDS diagnosis), weight gain (g/d) from the day on which birth weight had been regained to the study day, mean activity level, the number of the assessment (1 6), and the interaction of lung disease history and time were included in a linear mixed model for repeated measures. Time was an index of postconceptional and postnatal age; all 3 were highly correlated. Because of high correlation with weight gain, caloric intake was not included in the analytic model. Lung disease history, mean activity level, and time were significant contributors to EE. A more precise measure of medical status than absence or presence of lung disease history, evenly spaced repetitions of EE assessment, and exploration of contexts in which the infants exhibit a higher activity level are needed in a replication study with a larger sample.

Key Words: preterm infants • low-birth-weight • infants • energy expenditure • maturity • respiratory distress syndrome • weight gain • activity level • caloric intake

Biological Research For Nursing, Vol. 6, No. 3, 216-229 (2005)
DOI: 10.1177/1099800404272310


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?