The effects of bedside pulmonary mechanics testing during infant mechanical ventilation: A retrospective analysis

William C. Rosen, Mark C. Mammel*, Joel B. Fisher, J. Michael Coleman, Dennis R. Bing, Keith K. Holloman, Stephen J. Boros

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


We examined the effects of regular bedside testing of pulmonary mechanics (PM) on the outcome of 468 acutely ill, mechanically ventilated neonates. During the first of two 18‐month study periods, 217 infants were mechanically ventilated without the assistance of PM measurements. During the second 18‐month period, 251 infants were ventilated with the assistance of at least daily PM measurements. Using data obtained from the PM tests, we adjusted the infants' ventilators to maintain tidal volume, inspiratory time, and pressure‐volume loops within predetermined limits. With the exception of the PM measurements, given the limitations of retrospective analyses, both groups of infants received identical medical and nursing care. The infants ventilated with the assistance of PM testing developed fewer pneumothoraces (4.0%; 10/251) vs. no PM testing, 10.1 % (22/217); P < 0.05 by Chi‐square analysis. Infants weighing less than 1,500 g ventilated with the assistance of PM measurements had less intraventricular hemorrhage (IVH) overall, most notably, less grades I and II IVH (total IVH‐PM testing, 39.1% vs. no PM testing, 65.7%; P < 0.01; Grades I‐II IVH‐PM testing, 30.4% vs. no PM testing, 54.9%; P < 0.01). IVH incidence was decreased independent of pneumothorax occurrence. Survival rates, incidences of bronchopulmonary dysplasia, and durations of mechanical ventilation and hospitalization were similar. This retrospective analysis suggests that PM testing during infant mechanical ventilation reduces common acute ventilator‐associated complications. Pediatr Pulmonol. 1993; 16:147–152. © 1993 Wiley‐Liss, Inc.

Original languageEnglish (US)
Pages (from-to)147-152
Number of pages6
JournalPediatric Pulmonology
Issue number3
StatePublished - Sep 1993


  • Intraventricular hemorrhage
  • Pneumothorax
  • compliance, time constants
  • pressure‐volume curves
  • respiratory system resistance

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Pediatrics, Perinatology, and Child Health


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