CPAP with air and oxygen to non-ventilated lung improves oxygenation during one lung anaesthesia.
نویسندگان
چکیده
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.
منابع مشابه
Changes in arterial oxygenation and physiological deadspace under anaesthesia.
The changes in lung function commonly associated with anaesthesia and spontaneous or controlled ventilation are a reduction in lung compliance, an increase in physiological deadspace and an increase in alveolar-arterial oxygen tension difference. In 1959 Mead and Collier showed that there was a progressive fall in lung compliance in anaesthetized dogs whether ventilation was spontaneous or cont...
متن کاملLung Recruitment Can Improve Oxygenation in Patients Ventilated in Continuous Positive Airway Pressure/Pressure Support Mode
BACKGROUND Recruitment maneuvers are often used in critical care patients with hypoxemic respiratory failure. Although continuous positive airway pressure/pressure support (CPAP/PS) ventilation is a frequently used approach, but whether lung recruitment also improves oxygenation in spontaneously breathing patients has not been investigated yet. The primary objective was to analyze the effect of...
متن کاملBenefits of Spontaneous Breathing: Compared with Mechanical Ventilation
Vimláti, L. 2012. Benefits of Spontaneous Breathing: Compared with Mechanical Ventilation. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine 824. 47 pp. Uppsala. ISBN 978-91-554-8498-9. When spontaneous breathing (SB) is allowed during mechanical ventilation (MV), atelectatic lung areas are recruited and oxygenation improves th...
متن کاملDouble lumen tube location predicts tube malposition and hypoxaemia during one lung ventilation.
BACKGROUND Poor positioning of an endobronchial double lumen tube (DLT) could affect oxygenation during one lung ventilation (OLV). We set out to relate DLT position to hypoxaemia and DLT misplacement during OLV. METHODS We recruited 152 ASA physical status I-II patients about to have elective thoracic surgery. The trachea was intubated with a left-sided DLT. Tube position was assessed by fib...
متن کاملReduced local immune response with continuous positive airway pressure during one-lung ventilation for oesophagectomy.
BACKGROUND Transthoracic oesophagectomy requires prolonged one-lung ventilation causing systemic and local inflammatory responses. Application of continuous positive airway pressure (CPAP) to the collapsed lung potentially reduces pulmonary damage, hypoxia, and consequent inflammation. This randomized controlled trial studied the influence of CPAP applied to the collapsed right lung during thor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- JPMA. The Journal of the Pakistan Medical Association
دوره 45 2 شماره
صفحات -
تاریخ انتشار 1995