• European urology · Nov 1999

    Comparative Study Clinical Trial

    Influence of carbon dioxide on respiratory function during posterior retroperitoneoscopic adrenalectomy in prone position.

    • I Sasagawa, H Suzuki, T Izumi, N Shoji, T Nakada, S Takaoka, Y Miura, H Hoshi, S Amagasa, and H Horikawa.
    • Department of Urology, Yamagata University School of Medicine, Yamagata, Japan. issaga@med.id.yamagata-u.ac.jp
    • Eur. Urol. 1999 Nov 1; 36 (5): 413-7.

    ObjectiveTo evaluate the influences of CO(2) insufflation on changes in blood gas analysis and end tidal CO(2) tension (PetCO(2)) during posterior retroperitoneoscopic adrenalectomy in the prone position.MethodsArterial blood gas analysis and measurements of PetCO(2) were carried out during CO(2) insufflation in 16 patients who underwent posterior retroperitoneoscopic adrenalectomy in the prone position (PRA group). The results were compared to 10 patients who underwent open posterior adrenalectomy (OPA group). Ventilation was artificially controlled during the study period in all cases.ResultsArterial pH, PaCO(2), PetCO(2) and PaO(2) were not significantly different between the PRA and OPA groups. However, the PaCO(2)-PetCO(2) gradient in the PRA group was significantly higher than that in the OPA group (p < 0.01).ConclusionTransperitoneal absorption of CO(2) occurs in patients undergoing retroperitoneoscopy in the prone position. The alveolo-arterial CO(2) gradient may be the only parameter which indicates the absorption of CO(2) during PRA.

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