CPAP with air and oxygen to non-ventilated lung improves oxygenation during one lung anaesthesia

Ten adult patients undergoing one lung ventilation for elective thoracotomy were selected. All these patients failed to maintain oxygen saturation (SaO2) > 90% despite administration of 100% oxygen to the non-ventilated lung (NVL). These patients were studied for the efficacy of continuous positi...

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Veröffentlicht in:	Journal of the Pakistan Medical Association 1995-02, Vol.45 (2), p.43-44
Hauptverfasser:	MAROOF, M, KHAN, R. M, BHATTI, T. H
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Anesthesia Anesthesia depending on type of surgery Anesthesia, Inhalation Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Biological and medical sciences Humans Lung - drug effects Lung - metabolism Medical sciences Middle Aged Oxygen - administration & dosage Oxygen Consumption Pneumonectomy - methods Positive-Pressure Respiration Thoracic and cardiovascular surgery. Cardiopulmonary bypass Time Factors Tropical medicine
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Beschreibung
Zusammenfassung:	Ten adult patients undergoing one lung ventilation for elective thoracotomy were selected. All these patients failed to maintain oxygen saturation (SaO2) > 90% despite administration of 100% oxygen to the non-ventilated lung (NVL). These patients were studied for the efficacy of continuous positive airway pressure (CPAP) of the NVL using air and oxygen combination (FiO20.5) employing a variable FiO2CPAP system. It was observed that application of CPAP (5-10 cm H2O) with a mixture of air and oxygen to the NVL increased the SaO2 > 90% in all these patients. This could be attributed to nitrogen in air which prevented absorption atelectasis in the NVL. This produced a better ventilation/perfusion ratio and hence the increased oxygen saturation.
ISSN:	0030-9982