New ultrasound view could make fluid checks easier for heart surgery patients

NCT ID NCT07305051

First seen Jan 05, 2026 · Last updated Jun 23, 2026 · Updated 31 times

Summary

This study compares two ways of using ultrasound to measure the inferior vena cava, a major vein that shows how much fluid is in the body. The standard method uses a view below the breastbone, but this can be hard in patients who are obese or have surgical bandages. The alternative method uses the liver as a window to get a clearer image. Researchers will check if both methods give similar results and if different operators can use them consistently. The study involves 283 adults scheduled for cardiac surgery, and the scan takes less than 10 minutes with no discomfort.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Sunnybrook Health Science Centre

    Toronto, Ontario, M4N 3M5, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to

If successful, this could lead to a more reliable and easier way to assess fluid status in patients before heart surgery, especially those who are obese or have surgical dressings.

What could go wrong

This is an early observational study, not a treatment trial. It only compares two measurement methods and does not test any therapy, so it may not change patient care directly.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.