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The Effect of Head Position on the Cross-sectional Area of the Subclavian Vein

Kim, Hyerim MD; Chang, Jee-Eun MD; Lee, Jung-Man MD, PhD; Han, Sung-Hee MD, PhD; Ryu, Jung-Hee MD, PhD; Hwang, Jin-Young MD, PhD
doi: 10.1213/ANE.0000000000002446
Research Report: PDF Only

In 41 healthy volunteers, we investigated the cross-sectional area (CSA) of the subclavian vein (SCV) in the following head positions: neutral and 30° head rotation toward the contralateral or ipsilateral sides. Significant differences were observed in the CSA of the SCV at 3 different head positions: contralateral 30° versus neutral, -0.05 cm2 (95% confidence interval, -0.08 to -0.03); contralateral 30° versus ipsilateral 30°, -0.15 cm2 (-0.19 to -0.12); neutral versus ipsilateral 30°, -0.10 cm2 (-0.13 to -0.07); all Pcorrected < .001). For SCV catheterization, 30° head rotation to the ipsilateral side provided significant improvements in the CSA compared with the other head positions.

Accepted for publication July 27, 2017.

Funding: None.

The authors declare no conflicts of interest.

This study was conducted with written informed consent from the study subjects.

Clinical trial registration: The study was registered before patient enrollment. Registry URL: https://clinicaltrials.gov/show/NCT02860351.

ClinicalTrials.gov (trial ID: NCT02860351).

Institutional review board contact information: The Institutional Review Board of SMG-SNU Boramae Medical Center. Approved institutional review board number of this study: 20160616/16-2016-71/071.

Reprints will not be available from the authors.

Address correspondence to Jin-Young Hwang, MD, PhD, Department of Anesthesiology and Pain Medicine, SMG-SNU Boramae Medical Center, Boramae-ro, Dongjak-gu, Seoul 156-707, Republic of Korea. Address e-mail to mistyblue15@naver.com.

© 2017 International Anesthesia Research Society

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