Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Reiterer, F; Sivieri, E; Abbasi, S; Bhutani, VK.
Evaluation of pulmonary functions during pressure-limited manual ventilation in preterm neonates.
Pediatr Pulmonol. 1993; 15(2): 117-121.
Doi: 10.1002/ppul.1950150209
Web of Science
PubMed
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- Führende Autor*innen der Med Uni Graz
- Reiterer Friedrich
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- Abstract:
- Manual ventilation (MAV) or handbagging is a frequent and often life-saving procedure for neonates; however, few studies allow for an objective evaluation of techniques or possible risks. We compared parameters of ventilation and pulmonary mechanics obtained during routine pressure-limited MAV to those obtained during spontaneous breathing (SPB) in the same infant at approximately the same time. We selected 20 preterm neonates in the recovery phase of respiratory distress syndrome who received periodic MAV and were capable of optimum spontaneous minute ventilation (> 300 mL/kg/min). During MAV compared to SPB we measured higher tidal volume (8.1 +/- 0.5 SE vs. 5.4 +/- 0.4 SE mL/kg, P < 0.001), lower total pulmonary compliance (0.65 +/- 0.05 vs. 1.16 +/- 0.11 SE mL/cmH2O, P < 0.001), end-inspiratory compliance, higher pulmonary resistance (121 +/- 11 vs. 61 +/- 7 SE cmH2O/L/s, P < 0.001) and higher peak inspiratory airflow (2.8 +/- 0.2 vs. 1.6 +/- 0.1 L/s, P < 0.001). Inspiratory time (Ti) was consistently longer during MAV (0.49 +/- 0.02 vs. 0.36 +/- 0.02 SE, P < 0.001) such that during MAV the difference between actual Ti and minimal effective Ti (fivefold inspiratory time constant) was larger (0.29 +/- 0.03 vs. 0.13 +/- 0.03 s, P < 0.05). Our study suggests that operator-dependent ventilatory variables such as tidal volume, inspiratory time, frequency, and airflow need to be further evaluated in order to develop standardized guidelines for the safe administration of MAV. Until then the ventilator used for brief or augmented ventilatory support is a reasonable alternative to administering MAV by inconsistent standards.
- Find related publications in this database (using NLM MeSH Indexing)
- Comparative Study -
- Humans -
- Infant, Newborn -
- Infant, Premature - physiology
- Research Support, Non-U.S. Gov't - physiology
- Respiration, Artificial - adverse effects
- Respiratory Distress Syndrome, Newborn - physiopathology
- Respiratory Function Tests - physiopathology
- Respiratory Mechanics - physiology
- Resuscitation - methods
- Find related publications in this database (Keywords)
- TIDAL VOLUME
- LUNG COMPLIANCE
- RESISTANCE
- INSPIRATORY TIME
- BREATHING FREQUENCY
- RISK OF OVERDISTENSION