Internal Jugular Vein Cross Sectional Area

University of Iowa38 enrolled

Overview

The Trendelenburg position is used to distend the central veins, improving both success and safety of vascular cannulation. The purpose of this study is to measure the cross-sectional area of the internal jugular vein (IJV) in three different positions, using surface ultrasound.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Central Venous Pressure

Eligibility

Sex: ALLMin age: 18 YearsMax age: 120 Years

Medical Language ↔ Plain English

Inclusion Criteria: * adult medical or surgical ICU patients who have preexisting central venous (jugular/subclavian only) catheters. Exclusion Criteria: * subjects with only a femoral venous catheter. * subjects whose CVP measurement by the indwelling catheter exceeds 20cm of water. * subjects younger than 18 years old. * inability to obtain informed consent from the subject or the subjects authorized representative.

Locations (1)

University of Iowa

Iowa City, Iowa, United States

Outcomes

Primary Outcomes

Effect of trendelenburg and reverse trendelenburg position on the cross sectional area of the internal jugular vein

There will be substantial anatomic variation in venous size. Further, Trendelenburg positioning will have little impact on venous cross-sectional area in most subjects when compared with supine.

Time frame: At time of data collection: physiologic study

Data from ClinicalTrials.gov

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