CompletedNot Applicable

Respiratory Variations in the Diameter of the Inferior Vena Cava With Spontaneous Ventilation

France52 participantsStarted 2012-09

Plain-language summary

The main objective of this study is to determine a threshold value of diaphragmatic excursion (ultrasound measures: expiration versus inspiration)that best predicts a 50% collapsibility of the inferior vena cava.

Who can participate

Age range

18 Years – 50 Years

Sex

ALL

See this in plain English?

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

Inclusion Criteria: * The volunteer must have given his/her informed and signed consent * The volunteer must be insured or beneficiary of a health insurance plan Exclusion Criteria: * The volunteer is participating in another study * The volunteer is in an exclusion period determined by a previous study * The volunteer is under judicial protection, under tutorship or curatorship * The volunteer refuses to sign the consent * It is impossible to correctly inform the volunteer * The patient is pregnant, parturient, or breastfeeding * The volunteer has known heart disease like heart failure, cardiac arrhythmia * The volunteer takes cardiotropics * The volunteer has known lung disease: obstructive or restrictive respiratory failure * The volunteer has clinical signs of COPD (coughing with morning sputum in a smoking subject) * Any emergency situation

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Collapsibility score for the IVC diameter

Timeframe: Baseline (Day 0; cross-sectional study)

Collapsibility score for the IVC diameter >= 50% (presence/absence)

Timeframe: Baseline (Day 0; cross-sectional study)

Diaphragmatic excursion

Timeframe: Baseline (Day 0; cross-sectional study)

Trial details

NCT IDNCT01644760

SponsorCentre Hospitalier Universitaire de Nīmes

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2012-09-17

View on ClinicalTrials.gov More Collapsibility of the Inferior Vena Cava trials

Who can participate

Age range

18 Years – 50 Years

Sex

ALL

See this in plain English?

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