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  • Title: [Anesthetic management for an adult patient with secundum atrial septal defect associated with a large left-to-right shunt].
    Author: Niijima K, Seto A, Uehara H, Takenaka I, Kadoya T.
    Journal: Masui; 2000 Jun; 49(6):646-8. PubMed ID: 10885245.
    Abstract:
    We describe the case of a 68-year-old woman with secundum atrial septal defect associated with a large left-to-right shunt and congestive heart failure. The patient with a pancreatic tumor was scheduled for hepatic cholangiojejunostomy and cholecystectomy. To determine the ratio of pulmonary to systemic flow (Qp/Qs) as an indicator for the magnitude of left-to-right shunt, oxymetric catheters were placed in the superior vena cava and pulmonary artery. In addition, oxygen delivery was assessed using superior vena cava oxygen saturation (SsvcO2). Although the patient was anesthetized with high-dose fentanyl to supplement nitrousoxide and sevoflurane, the Qp/Qs markedly increased after skin incision. Epidural local anesthetic was then administered. The Qp/Qs decreased to the preoperative value and the hemodynamic condition was improved thereafter. The operative course was uneventful. This case illustrates the potential usefulness of continuous measurement of the Qp/Qs and SsvcO2 for anesthetic management of adult patients with secundum atrial septal defect.
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