Utility of pulse oximetry in the early recognition of intraoperative hypoxaemia in tetralogy of Fallot
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Undetected hypoxaemia in an anaesthetised patient can prove fatal. Pulse oximetry has been widely used to detect hypoxaemia and intracardiac shunts in congenital cyanotic heart diseases. In two patients with tetralogy of Fallot, intraoperative pulse oximetry was helpful in detecting hypoxaemia where the oxygen saturation fell to22 and 28 per cent with concomitant fall in PaO2. Immediate therapeutic measures were taken and patients’ oxygen saturation improved. We suggest routine use of pulse oximetry in patients undergoing corrective or palliative surgery for tetralogy of Fallot.
KeywordsPulse Oximetry Ventricular Septal Defect Ventricular Septal Defect Pulse Oximeter Congenital Cyanotic Heart Disease
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