Comparing two ultrasound techniques for heart surgery
Official title: Reassessing Normative Cardiac Chamber Measurements: A Comparative Study of TTE and TEE Under General Anesthesia.
Run by Sunnybrook Health Sciences Centre · NCT06715371 · Data updated 2026-11-12
This study is testing which ultrasound method, done on the chest or during surgery, gives better measurements of heart size in adults having heart surgery.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 114 (estimated) |
| Sponsor | Sunnybrook Health Sciences Centre Academic / other |
| Locations | 1 site (Toronto, Ontario) |
| Status | Recruiting |
| Started | January 27, 2025 |
| Main results expected | March 2, 2026 |
| Study ends | June 2026 |
| Registry record updated | July 3, 2025 |
| Trial ID | NCT06715371 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older scheduled for coronary revascularization surgery under general anesthesia with normal left and right ventricular function.
✕Probably not a fit
Patients with contraindications to TTE or TEE, those with poor-quality echocardiography data, or those undergoing emergency cardiac surgery may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study compares transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE) in measuring cardiac chamber dimensions in adult patients undergoing cardiac surgery. TTE is a non-invasive technique performed on the chest, while TEE is an invasive method used during surgery for clearer images. The study aims to evaluate the agreement between measurements from both techniques and how factors like general anesthesia and breathing techniques affect these measurements. A total of 114 adult patients scheduled for coronary revascularization surgery at Sunnybrook Health Sciences Centre will be enrolled, with imaging procedures conducted as part of standard care.
Why it matters
Potential benefit: If successful, this study could enhance the accuracy of cardiac chamber measurements during surgery, leading to improved patient outcomes.
How similar studies have gone: While the comparison of TTE and TEE is common, this specific investigation into their agreement under anesthesia is less explored, making it a novel approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥ 18, able to provide informed consent. * Patients scheduled for coronary revascularization cardiac surgery under general anesthesia. * With normal left ventricular (LV) systolic function, defined by an ejection fraction of 50% or more, and normal right ventricular (RV) systolic function. * Requiring intraoperative echocardiographic assessment. Exclusion Criteria: * Patients with contraindications to either transthoracic echocardiography (TTE) or transesophageal echocardiography (TEE). * History of poor-quality echocardiography data that preclude accurate assessment. * Undergoing emergency cardiac surgery.
Where it's running
-
Sunnybrook Health Sciences Centre
Toronto, Ontario, Canada Recruiting
Study contacts
- Principal investigator: Jacobo Moreno Garijo, MD, PhD — Sunnybrook Health Sciences Centre
- Study coordinator: Jacobo Moreno Garijo, MD, PhD
- Email: jacobo.morenogarijo@sunnybrook.ca
- Phone: 416-480-4864
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.