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  • Title: Oesophageal thermal tube for intraoperative hypothermia in liver transplantation.
    Author: Steib A, Beller JP, von Bandel M, Beck F, Chabrol JL, Otteni JC.
    Journal: Acta Anaesthesiol Scand; 1993 Feb; 37(2):199-202. PubMed ID: 8447211.
    Abstract:
    In order to prevent the occurrence of major hypothermia during liver transplantation, with its deleterious effects on intraoperative cardiovascular activity and on postoperative graft functioning, this study evaluated the benefit of an oesophageal rewarmer, used during surgery, in addition to the usual methods of warming (OR temperature at 22 degrees C, rewarming of fluids and blood, heating mattress, heat and moisture exchanger). We compared 10 patients with an oesophageal rewarmer (OeR group) to 10 patients without (Control group). The anaesthetic procedure was similar in all cases. Rectal (RT) and pulmonary artery (PT) temperatures were recorded during the three phases of surgery (pre-anhepatic, anhepatic, postanhepatic phase) and their time course was analysed with non-parametric tests. The two groups were comparable with regard to duration of surgery, blood and fluid requirements and veno-venous bypass flow rate. The RT decreased similarly in both groups, but was significantly higher in the OeR group at peritoneum closure (P < 0.01). The PT was higher in the OeR group after onset of venous shunting (P < 0.05) and during the third phase of surgery (P < 0.01). Three incidents (one leakage and two herniations of the latex tube) occurred, without detrimental effects on the patients. It is concluded that the oesophageal heat exchanger allows better rewarming after revascularization of the graft, but is unable to prevent cardiac hypothermia at unclamping.
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