T F Fok1, P C Ng, W Wong, C H Lee, K W So. 1. Department of Paediatrics, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
Abstract
AIMS: To describe the short term effect of high frequency oscillatory ventilation on infants with severe abdominal distension who could not be conventionally ventilated. METHODS: Eight infants (25 to 38 gestational weeks, birthweight 600-3200 g, postnatal age 1 to 190 days) with a variety of intra-abdominal pathologies, resulting in severe abdominal distension and failure of conventional ventilation, were studied. RESULTS: The oxygenation status of all infants significantly improved within an hour of changing from conventional to high frequency oscillatory ventilation. Infants who were hypercapneic on conventional ventilation also showed a reduction in PaCO2. As a group, the mean (SD) PaO2/FIO2 improved from 4.99 (0.98) kpa to 11.55 (3.8) kpa (P = 0.002), and the PaCO2 from 6.48 (2.12) kpa to 4.89 (1.22) kpa (P = 0.028). These improvements were sustained throughout the next 48 hours. CONCLUSION: High frequency oscillatory ventilation seems to be an effective rescue measure for infants with respiratory failure secondary to increased intra-abdominal pressure.
AIMS: To describe the short term effect of high frequency oscillatory ventilation on infants with severe abdominal distension who could not be conventionally ventilated. METHODS: Eight infants (25 to 38 gestational weeks, birthweight 600-3200 g, postnatal age 1 to 190 days) with a variety of intra-abdominal pathologies, resulting in severe abdominal distension and failure of conventional ventilation, were studied. RESULTS: The oxygenation status of all infants significantly improved within an hour of changing from conventional to high frequency oscillatory ventilation. Infants who were hypercapneic on conventional ventilation also showed a reduction in PaCO2. As a group, the mean (SD) PaO2/FIO2 improved from 4.99 (0.98) kpa to 11.55 (3.8) kpa (P = 0.002), and the PaCO2 from 6.48 (2.12) kpa to 4.89 (1.22) kpa (P = 0.028). These improvements were sustained throughout the next 48 hours. CONCLUSION: High frequency oscillatory ventilation seems to be an effective rescue measure for infants with respiratory failure secondary to increased intra-abdominal pressure.
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