Heart performance during steep head-down positioning for robotic pelvic surgery
Official title: Effects of Steep Trendelenburg and Pneumoperitoneum on Cardiac Performance During Robotic-assisted Surgery in Patients With Normal and Low Ejection Fraction.
Run by Karlstad Central Hospital · NCT06336746 · Data updated 2026-11-12
This test looks at how heart function changes during steep head-down tilt in people having robotic pelvic surgery, including those with and without systolic heart failure.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 80 (estimated) |
| Sponsor | Karlstad Central Hospital Academic / other |
| Locations | 1 site (Karlstad, Värmland County) |
| Status | Recruiting |
| Started | November 21, 2024 |
| Main results expected | December 30, 2026 |
| Study ends | December 31, 2026 |
| Registry record updated | February 12, 2026 |
| Trial ID | NCT06336746 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults scheduled for robotic pelvic surgery requiring steep Trendelenburg positioning who can give written informed consent, including those with known systolic heart failure and those with normal heart function.
✕Probably not a fit
People under 18, those unable to give written consent, patients not undergoing robotic Trendelenburg procedures, or patients with only diastolic dysfunction are unlikely to benefit from the results directly.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Consecutive adults scheduled for robotic pelvic procedures with steep Trendelenburg positioning will have a preoperative echocardiogram to classify systolic function and then be monitored perioperatively. Hemodynamic monitoring uses an esophageal Doppler while regional cerebral saturation is tracked with optical spectrophotometry during insufflation and head-down tilt. Patients with normal systolic function will be compared to patients with known systolic heart failure to describe circulatory responses. This is an observational single-center protocol at Karlstad Central Hospital without interventional treatment changes driven by the study.
Why it matters
Potential benefit: If successful, the findings could help anesthesiologists better anticipate and manage heart stress during robotic surgery and reduce perioperative cardiac complications.
How similar studies have gone: Very few prior studies exist and they were limited to healthy ASA 1–2 patients, so application in patients with systolic heart failure is largely untested.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1\. Consecutive Patients Scheduled for Robotic Surgery with Trendelenburg positioning. \- Exclusion Criteria: 1. Age \<18; 2. Dementia, 3. Not able to give written consent -
Where it's running
-
Dpt of Anesthesiology&Intensive Care; Central Hospital of Karlstad
Karlstad, Värmland County, Sweden Recruiting
Study contacts
- Study coordinator: Ragnar N Henningsson, Associate Professor
- Email: ragnar.henningsson@regionvarmland.se
- Phone: +46108317434
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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.