Inferior Vena Cava (IVC) Diameters Before & After Interscalene Block

Withdrawn before enrolling

Conditions studied: IVC - Inferior Vena Cava Abnormality

In brief

The purpose of this study is to understand how changes to breathing patterns in the chest affect blood flow to the heart from the inferior vena cava in the abdomen. Ultrasound of the upper abdomen will be used to visualize changes in breathing patterns in the chest and blood flow in the abdomen.

Key facts

Study ID

NCT03989076

Run by

University of California, San Diego

People needed

0

Starts

2019-04-12

Expected to finish

2021-07-14

Last updated by the study team

2021-07-21

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Adult (age > 18 years)
• Scheduled to receive an interscalene block

You may not qualify if…

• Any person with known, pre-existing phrenic nerve, diaphragmatic, or inferior vena cava anomaly.
• Patients who cannot be successfully imaged by ultrasound or who cannot participate in spirometry will additionally be excluded.
• Non-English speaking patients will be excluded as well as there is no research funding to translate consent forms. Given that there is no potential benefit to participation in the study, this does not exclude these individuals from any potentially beneficial therapy.

Where it is running

• UCSD Medical Center — La Jolla, California, United States

Full record on ClinicalTrials.gov

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