Effect of backrest elevation on the development of ventilator-associated pneumonia

Mary Jo Grap, Cindy L. Munro, Russell S. Hummel, R. K. Elswick, Jessica L. McKinney, Curtis N. Sessler

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

BACKGROUND: Ventilator-associated pneumonia is a common complication of mechanical ventilation. Backrest position and time spent supine are critical risk factors for aspiration, increasing the risk for pneumonia. Empirical evidence of the effect of backrest positions on the incidence of ventilator-associated pneumonia, especially during mechanical ventilation over time, is limited. OBJECTIVE: To describe the relationship between backrest elevation and development of ventilator-associated pneumonia. METHODS: A nonexperimental, longitudinal, descriptive design was used. The Clinical Pulmonary Infection Score was used to determine ventilator-associated pneumonia. Backrest elevation was measured continuously with a transducer system. Data were obtained from laboratory results and medical records from the start of mechanical ventilation up to 7 days. RESULTS: Sixty-six subjects were monitored (276 patient days). Mean backrest elevation for the entire study period was 21.7°. Backrest elevations were less than 30° 72% of the time and less than 10° 39% of the time. The mean Clinical Pulmonary Infection Score increased but not significantly, and backrest elevation had no direct effect on mean scores. A model for predicting the Clinical Pulmonary Infection Score at day 4 included baseline score, percentage of time spent at less than 30° on study day 1, and score on the Acute Physiology and Chronic Health Evaluation II, explaining 81% of the variability (F = 7.31, P = .003). CONCLUSIONS: Subjects spent the majority of the time at backrest elevations less than 30°. Only the combination of early, low backrest elevation and severity of illness affected the incidence of ventilator-associated pneumonia.

Original languageEnglish (US)
Pages (from-to)325-333
Number of pages9
JournalAmerican Journal of Critical Care
Volume14
Issue number4
StatePublished - Jul 1 2005

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Ventilator-Associated Pneumonia
Artificial Respiration
Lung
Infection
APACHE
Incidence
Transducers
Medical Records
Pneumonia

ASJC Scopus subject areas

  • Medicine(all)
  • Nursing(all)

Cite this

Grap, M. J., Munro, C. L., Hummel, R. S., Elswick, R. K., McKinney, J. L., & Sessler, C. N. (2005). Effect of backrest elevation on the development of ventilator-associated pneumonia. American Journal of Critical Care, 14(4), 325-333.

Effect of backrest elevation on the development of ventilator-associated pneumonia. / Grap, Mary Jo; Munro, Cindy L.; Hummel, Russell S.; Elswick, R. K.; McKinney, Jessica L.; Sessler, Curtis N.

In: American Journal of Critical Care, Vol. 14, No. 4, 01.07.2005, p. 325-333.

Research output: Contribution to journalArticle

Grap, MJ, Munro, CL, Hummel, RS, Elswick, RK, McKinney, JL & Sessler, CN 2005, 'Effect of backrest elevation on the development of ventilator-associated pneumonia', American Journal of Critical Care, vol. 14, no. 4, pp. 325-333.
Grap MJ, Munro CL, Hummel RS, Elswick RK, McKinney JL, Sessler CN. Effect of backrest elevation on the development of ventilator-associated pneumonia. American Journal of Critical Care. 2005 Jul 1;14(4):325-333.
Grap, Mary Jo ; Munro, Cindy L. ; Hummel, Russell S. ; Elswick, R. K. ; McKinney, Jessica L. ; Sessler, Curtis N. / Effect of backrest elevation on the development of ventilator-associated pneumonia. In: American Journal of Critical Care. 2005 ; Vol. 14, No. 4. pp. 325-333.
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