Effect of the lateral tilt position on femoral vein cross-sectional area in anesthetized adults

• Published in: Anesthesia and pain medicine (Korean society of anesthesiologists) Vol. 14; no. 1; pp. 106 - 111
• Main Authors: An, Tae Hun, Shin, Yu Som, Kim, Joo Won, Park, Tae Woo, Shim, Dong Jin, Kim, Doo Sik, Ryu, Sie Jeong, Kim, Ju Deok
• Format: Journal Article
• Language: English
• Published: 대한마취통증의학회 01.01.2019
• Subjects: 마취과학
• ISSN: 1975-5171; 2383-7977
• DOI: 10.17085/apm.2019.14.1.106

Background: A lateral tilt position can affect the size of the femoral vein (FV) due to increased venous blood volume in the dependent side of the body. Methods: Forty-two patients, aged 20–60 years, were enrolled in this study. The crosssectional area (CSA), anteroposterior, and transverse diameters of the FV were measured 1 cm below the left inguinal line using ultrasound. The value of each parameter was recorded in the following four positions: (1) supine, (2) supine + 10° left-lateral tilt (LLT), (3) 10° reverse Trendelenburg (RT), and (4) RT + LLT. Results: CSAs of the left FV in the supine, supine + LLT, RT, RT + LLT positions were 0.93 ± 0.22, 1.11 ± 0.29, 1.17 ± 0.29, and 1.31 ± 0.32 cm2, respectively. Compared to the supine position, there was a significant increase in CSA and anteroposterior diameter according to the three changed positions. The transverse diameter of the left FV was significantly increased in supine + LLT, RT, RT + LLT positions compared to that in the supine position (P = 0.010, P = 0.043, P = 0.001, respectively). There was no significant difference in the transverse diameter of the left FV between the supine + LLT and RT positions (P = 1.000). Conclusions: Adding LLT to the supine and RT positions increased the CSA of the unilateral FV significantly. KCI Citation Count: 0