Annals of Thoracic Medicine Official publication of the Saudi Thoracic Society, affiliated to King Saud University
 
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ORIGINAL ARTICLE
Year : 2015  |  Volume : 10  |  Issue : 1  |  Page : 44-49

Sonographic evaluation of intravascular volume status: Can internal jugular or femoral vein collapsibility be used in the absence of IVC visualization?


1 Department of Surgery, The Ohio State University College of Medicine, Columbus, Ohio, USA
2 Department of Anesthesiology, The Ohio State University College of Medicine, Columbus, Ohio, USA
3 Department of Surgery, The Ohio State University College of Medicine, Columbus, Ohio; OPUS 12 Foundation Multi-Center Trials Group, Inc, USA
4 Department of Emergency Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
5 Department of Emergency Medicine, Jubilee Mission Medical College and Research Institute, Kerala, India
6 OPUS 12 Foundation Multi-Center Trials Group, Inc, USA; Global Hospital Group, Mumbai, Maharashtra, India
7 OPUS 12 Foundation Multi-Center Trials Group, Inc; Department of Emergency Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
8 OPUS 12 Foundation Multi-Center Trials Group, Inc; Department of Research and Innovation, St. Luke's University Health Network, Bethlehem, Pennsylvania, USA

Correspondence Address:
Stanislaw P Stawicki
Department of Research and Innovation, St Luke's University Health Network, Bethlehem, Pennsylvania. 801 Ostrum Street, Bethlehem, Pennsylvania 18015 USA

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DOI: 10.4103/1817-1737.146872

PMID: 25593607

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Introduction: Inferior vena cava collapsibility index (IVC-CI) has been shown to correlate with both clinical and invasive assessment of intravascular volume status, but has important limitations such as the requirement for advanced sonographic skills, the degree of difficulty in obtaining those skills, and often challenging visualization of the IVC in the postoperative patient. The current study aims to explore the potential for using femoral (FV) or internal jugular (IJV) vein collapsibility as alternative sonographic options in the absence of adequate IVC visualization. Methods: A prospective, observational study comparing IVC-CI and Fem- and/or IJV-CI was performed in two intensive care units (ICU) between January 2012 and April 2014. Concurrent M-mode measurements of IVC-CI and FV- and/or IJV-CI were collected during each sonographic session. Measurements of IVC were obtained using standard technique. IJV-CI and FV-CI were measured using high-frequency, linear array ultrasound probe placed in the corresponding anatomic areas. Paired data were analyzed using coefficient of correlation/determination and Bland-Altman determination of measurement bias. Results: We performed paired ultrasound examination of IVC-IJV (n = 39) and IVC-FV (n = 22), in 40 patients (mean age 54.1; 40% women). Both FV-CI and IJV-CI scans took less time to complete than IVC-CI scans (both, P < 0.02). Correlations between IVC-CI/FV-CI (R 2 = 0.41) and IVC-CI/IJV-CI (R 2 = 0.38) were weak. There was a mean -3.5% measurement bias between IVC-CI and IJV-CI, with trend toward overestimation for IJV-CI with increasing collapsibility. In contrast, FV-CI underestimated collapsibility by approximately 3.8% across the measured collapsibility range. Conclusion: Despite small measurement biases, correlations between IVC-CI and FV-/IJV-CI are weak. These results indicate that IJ-CI and FV-CI should not be used as a primary intravascular volume assessment tool for clinical decision support in the ICU. The authors propose that IJV-CI and FV-CI be reserved for clinical scenarios where sonographic acquisition of both IVC-CI or subclavian collapsibility are not feasible, especially when trended over time. Sonographers should be aware that IJV-CI tends to overestimate collapsibility when compared to IVC-CI, and FV-CI tends to underestimates collapsibility relative to IVC-CI.


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