-
J. Am. Coll. Cardiol. · Oct 2007
Noninvasive central venous pressure measurement by controlled compression sonography at the forearm.
- Christoph Thalhammer, Markus Aschwanden, Angela Odermatt, Ulrich A Baumann, Stephan Imfeld, Deniz Bilecen, Stephan C Marsch, and Kurt A Jaeger.
- Department of Vascular Medicine, University Hospital, Basel, Switzerland. thalhammerc@uhbs.ch
- J. Am. Coll. Cardiol. 2007 Oct 16;50(16):1584-9.
ObjectivesWe sought to validate a new noninvasive technique to determine central venous pressure (CVP) using high-resolution compression sonography.BackgroundInformation concerning CVP is crucial in clinical situations, including cardiac failure, volume overload, and sepsis. The measurement of CVP, however, requires puncture of a vein with attendant risk of complication.MethodsAfter a proof-of-concept study in healthy subjects, a prospective blinded evaluation was performed comparing CVP measurement using a central venous catheter with measurement using compression sonography in critically ill (intensive care unit) patients.ResultsIn healthy subjects with experimentally induced venous hypertension with a wide range of pressure values, a strong correlation (r = 0.95; p < 0.001) between noninvasive and invasive peripheral venous pressure at the forearm was shown. High interobserver agreement with an intraclass correlation coefficient of 0.988 shows excellent reliability of the system. Noninvasive peripheral venous pressure measurement at the forearm showed a good correlation with CVP in 50 intensive care unit patients with the forearm positioned both below heart level (r = 0.84; p < 0.001) and at heart level (r = 0.85; p < 0.001). The mean difference between invasive and noninvasive measurement was negligible (-0.1 +/- 3.5 cm H2O and -0.7 +/- 3.4 cm H2O, respectively).ConclusionsControlled-compression sonography is a valuable tool for measuring venous pressure in peripheral veins and allows reliable indirect assessment of CVP without intravenous catheterization.
Notes
Knowledge, pearl, summary or comment to share?You can also include formatting, links, images and footnotes in your notes
- Simple formatting can be added to notes, such as
*italics*
,_underline_
or**bold**
. - Superscript can be denoted by
<sup>text</sup>
and subscript<sub>text</sub>
. - Numbered or bulleted lists can be created using either numbered lines
1. 2. 3.
, hyphens-
or asterisks*
. - Links can be included with:
[my link to pubmed](http://pubmed.com)
- Images can be included with:
![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
- For footnotes use
[^1](This is a footnote.)
inline. - Or use an inline reference
[^1]
to refer to a longer footnote elseweher in the document[^1]: This is a long footnote.
.