Preprint Article Version 1 This version is not peer-reviewed

Preoperative and Postoperative Assessment of Ultrasonographic Measurement of Inferior Vena Cava: a Prospective, Observational Study

Version 1 : Received: 24 May 2018 / Approved: 25 May 2018 / Online: 25 May 2018 (11:42:21 CEST)

A peer-reviewed article of this Preprint also exists.

Kaydu, A.; Gokcek, E. Preoperative and Postoperative Assessment of Ultrasonographic Measurement of Inferior Vena Cava: A Prospective, Observational Study. J. Clin. Med. 2018, 7, 145. Kaydu, A.; Gokcek, E. Preoperative and Postoperative Assessment of Ultrasonographic Measurement of Inferior Vena Cava: A Prospective, Observational Study. J. Clin. Med. 2018, 7, 145.

Journal reference: J. Clin. Med. 2018, 7, 145
DOI: 10.3390/jcm7060145

Abstract

Background: Ultrasound measurement of dynamic changes in inferior vena cava (IVC) diameter and collapsibility index (CI) evaluates to estimate the fluid responsiveness and intravascular volume status. We conducted a analysis to quantify the sonographic measurement of IVC diameter changes in adult patients at preoperative and postoperative period. Methods: Ultrasonography was performed on 72 patients scheduled for surgery with American Society of Anesthesiologists physical status I to III. Quantitative assessments of the end-expiration (Dmin), end-inspiration (Dmax) and CI at preoperative and postoperative period were compared in a prospective, observational study. The patients received intravenous fluid according to standard protocol regimes peroperatively. The cutt-off value of dIVC 40% was accepted as hypovolemia. Results: Ultrasonography of IVC measurement was unsuccessful in 12.5% of patients and 63 patients remained for analyses. The mean age was 43.29 ± 17.22 (range 18 - 86) years. The average diameter of the Dmin, Dmax and dIVC at preoperative and postoperative were 1.99 ± 0.31 vs. 2.05 ± 0.29 cm, 1.72 ± 0.33 vs. 1.74 ± 0.32 cm, 14.0 ± 9.60 % vs. 15.14 ± 11.18 %, respectively (p<0.05). Using a threshold dIVC of 40%, one patient preoperatively and 5 postoperatively were hypovolemic (p<0.05). CI was also positively associated preoperatively and postoperatively (regression coefficient = 0.438, p<0.01). Conclusion: The diameter of IVC did not change preoperatively and postoperatively in adult patients with standard fluid regimens. The parameters of the IVC diameter increased postoperatively according to preoperative period.

Subject Areas

ultrasonography; preoperative; postoperative; collabsibility index; inferior vena cava diameter

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