Distal Versus Conventional Radial Arterial Catheterization for Arterial Waveform Stability (NCT07732296) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Distal Versus Conventional Radial Arterial Catheterization for Arterial Waveform Stability
70 participantsStarted 2026-08-05
Plain-language summary
During robot-assisted urologic surgery, both arms are often placed alongside the body and covered by surgical drapes. This position can make the arterial catheter difficult to access during surgery. A conventional radial arterial catheter placed at the wrist may become compressed or bent because of wrist position or arm fixation, which can cause an inaccurate or dampened arterial blood pressure waveform. A distal radial arterial catheter may be less affected by wrist movement or pressure on the forearm.
This single-center randomized study will include 70 adults undergoing robot-assisted urologic surgery under general anesthesia who require invasive arterial blood pressure monitoring. Participants will be randomly assigned in a 1:1 ratio to ultrasound-guided conventional radial arterial catheterization at the wrist or distal radial arterial catheterization near the anatomical snuffbox or back of the hand.
The main purpose of the study is to determine whether distal radial arterial catheterization reduces clinically significant arterial catheter dysfunction requiring troubleshooting or rescue treatment while the arms are tucked. The study will also compare catheter insertion success, first-attempt success, insertion time, episodes of dampened or lost arterial pressure waveforms, difficulty obtaining arterial blood samples, need for catheter replacement or another arterial access site, and catheter-related complications.
Who can participate
Age range
19 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:
* Adults aged 19 years or older
* Scheduled to undergo robot-assisted urologic surgery under general anesthesia
* Scheduled to have both arms positioned alongside the body in an arm-tucked position during surgery
* Considered by the attending anesthesiologist to require intraoperative invasive arterial blood pressure monitoring
* Able and willing to provide written informed consent
Exclusion Criteria:
* Refusal to participate or inability to provide written informed consent
* Emergency surgery
* Pregnancy or breastfeeding
* Lack of decision-making capacity requiring consent from a legally authorized representative
* Presence of an arteriovenous fistula for dialysis or unsuitable bilateral radial artery access
* Infection, burn, trauma, surgical scar, or severe skin lesion at the intended puncture site
* Suspected hand perfusion impairment, including radial artery occlusion, absent radial pulse, severe peripheral vascular disease, or Raynaud phenomenon
* Severe coagulopathy or uncorrected bleeding tendency for which radial arterial catheterization is considered inappropriate
* Any condition for which the attending anesthesiologist considers study participation inappropriate for participant safety
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
1
Number of Participants With Clinically Significant Arterial Catheter Dysfunction Requiring Troubleshooting or Rescue Intervention
Timeframe: From completion of bilateral arm tucking until robot undocking or release of the arm-tucked position during surgery