WithdrawnNot Applicable

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

Stopped: unable to enroll subjects

United States0Started 2019-04-12

Plain-language summary

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.

Who can participate

Age range18 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Adult (age \> 18 years) * Scheduled to receive an interscalene block Exclusion Criteria: * 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.

What they're measuring

Ipsilateral hemiparesis

Timeframe: Within 30 minutes post-block

IVC Collapsibility Index Change

Timeframe: Within 30 minutes post-block

Trial details

NCT IDNCT03989076

SponsorUniversity of California, San Diego

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2021-07-14

View on ClinicalTrials.gov More IVC - Inferior Vena Cava Abnormality trials