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Lying flat or tilted? study reveals how position changes heart function during cancer surgery

NCT ID NCT06293391

Knowledge-focused Sponsor: Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how changing a patient's position during major abdominal cancer surgery affects their heart function and vital signs. Researchers used a non-invasive esophageal Doppler monitor to measure cardiac output in 80 patients undergoing either laparoscopic or open surgery. The goal was to see if position changes (like tilting the head down) cause significant differences in heart measurements, which could help guide fluid therapy during surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

80 people

The number who actually took part.

Started

Feb 2023

Finished

Feb 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The patients included in the study were intubated after standard anaesthesia induction with fentanyl 2 mcg/kg, propofol 2 mg/kg and rocuronium 0.6 mg/kg, and ODM was used for case follow-up. All patients were followed with standard 6% desflurane anaesthetic gas and intravenous infusion of remifentanil, a short-acting opioid, after intubation. Mean arterial pressure was kept in the range of 65-80 mmHg in all patients, tidal volume was adjusted as 6-8 ml/kg, peep (positive end expiratory pressure) as 0-6 cm H2O and respiratory frequency as 10-15 /min for normocapnia. After intubation, intraoperative ODM measurements and intraoperative ODM measurements were retrospectively scanned and recorded in the supine and 45-degree angle trendelenburg position.

Ages

18 to 99 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Elective operation * ASA 1-4 Exclusion Criteria: * Heart failure * Valvular heart disease, * Patients with symptomatic rhythm disturbances * ODM placement contraindicated (coagulopathy, oesophageal varices, known aortic aneurysm)

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Conditions

The condition(s) this trial relates to.

digestive system cancer hypertensive disorder

As listed by the trial registrant

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

Abdominal cancer Blood pressure Cardiac indices

Contacts and locations

Locations

  • Dr.Abdurrahman Yurtaslan Ankara Oncology Train and Research Hospital

    Ankara, 06200, Turkey (Türkiye)

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