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  • Title: Usefulness of a central venous catheter during hepatic surgery.
    Author: Stéphan F, Rezaiguia-Delclaux S.
    Journal: Acta Anaesthesiol Scand; 2008 Mar; 52(3):388-96. PubMed ID: 18269388.
    Abstract:
    AIM: Central venous catheter (CVC) is often inserted during liver resection because a low central venous pressure (CVP) reduces blood loss and the procedure may be associated with circulatory impairment. The aim of the study was to evaluate the usefulness of a CVC besides the measurements of CVP, and whether peripheral venous pressure (PVP) measurement could be used reliably in place of CVP. METHODS: We conducted an observational study during a 16-month period. Number of CVC inserted, expected surgical difficulties, and intraoperative complications which could lead to treatment involving a CVC were prospectively recorded and analysed. Measurements of CVP and PVP were simultaneously obtained at different times during surgery. Bias and limits of agreement with their 95% confidence interval (95% CI) were calculated. RESULTS: Of the 101 patients included, 28 had expected surgical difficulties. Of the 75 CVCs inserted, only six (8%) were used for another purpose that CVP measurement in patients with expected surgical difficulties. A total of 124 measurements in 23 patients were recorded. Mean CVP was 4.8 +/- 2.9 mmHg and mean PVP was 6.9 +/- 3.1 mmHg (P<0.0001). The bias was -2.1 +/- 1.1 mmHg (95% CI: -2.3 to -1.9). When adjusted by the average bias of -2 mmHg, PVP predicted a CVP</=5 mmHg with a sensitivity and a specificity of 93% and 87%, respectively. CONCLUSION: Routine insertion of a CVC should be discussed in patients without expected surgical difficulties. Thus, PVP monitoring may suffice to estimate CVP in uncomplicated cases.
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