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- Title
Accuracy of totally implanted ports, tunnelled, single- and multiple-lumen central venous catheters for measurement of central venous pressure.
- Authors
Blot, François; Laplanche, Agnès; Raynard, Bruno; Germann, Nathalie; Antoun, Sami; Nitenberg, Gérard; Blot, F; Laplanche, A; Raynard, B; Germann, N; Antoun, S; Nitenberg, G
- Abstract
<bold>Objective: </bold>To verify the accuracy of totally implanted ports, tunnelled central venous catheters (CVC), widely used in cancer patients, and multi-lumen catheters, used in intensive care units (ICUs), in measuring central venous pressure (CVP), using right atrial pressure (RAP) measured in a Swan-Ganz catheter as the reference standard.<bold>Design: </bold>A prospective study, over a 10-month period.<bold>Setting: </bold>A medical-surgical ICU in a comprehensive cancer centre.<bold>Patients and Participants: </bold>Patients who had both (1) a Swan-Ganz catheter and (2) either a tunnelled catheter, a single or a multi-lumen catheter, or a totally implanted port.<bold>Interventions: </bold>RAP and CVP were measured simultaneously in each patient.<bold>Measurements and Results: </bold>Fifty-six pairs of RAP-CVP measurements were performed in 35 patients: 6 tunnelled catheters, 6 non-tunnelled single-lumen catheters, 26 multiple-lumen catheters and 18 totally implanted ports were studied. RAP measured in the Swan-Ganz catheter and CVP measured in the CVC were strongly correlated (r = 0.94, p < 0.01), whatever the type of catheter studied. The mean difference between RAP and CVP was -0.39 +/- 1.73 (SD) mmHg. In 51 cases (91%), the difference was within the limits of agreement (-3.78 to 3.00 mmHg, Bland and Altman method). For the five cases with a difference of 4 mmHg (three totally implanted ports, one double- and one triple-lumen catheter), CVP was greater than RAP.<bold>Conclusions: </bold>CVP can be accurately measured in totally implanted ports, tunnelled or non-tunnelled single-lumen and multiple-lumen catheters. When the difference exceeds the limit of agreement, the discrepancy between the two measurements has limited significance in most cases.
- Subjects
CANCER patients; CATHETERS; INTENSIVE care units; INTERVENTIONAL radiology equipment; CENTRAL venous pressure; CRITICAL care medicine
- Publication
Intensive Care Medicine, 2000, Vol 26, Issue 12, p1837
- ISSN
0342-4642
- Publication type
journal article
- DOI
10.1007/s001340000705