Direct vs. Seldinger Technique for Ultrasound-Guided Difficult Radial Access in Cardiac Surgery

Starting soon · Not applicable

Conditions studied: Cardiac Surgery in Adult Patient, Cardiac Surgery, Radial Artery Cannulation, Arterial Cannulation, Radial Artery Catheterization

In brief

Radial artery cannulation is a routine procedure for invasive hemodynamic monitoring for patients undergoing cardiovascular surgery patients. Although ultrasound (USG) guidance is known to improve success rates, there is limited data comparing the efficacy of the 'Direct' versus 'Seldinger' techniques specifically in patients with anticipated difficult radial access. This study aims to compare the effectiveness of USG-guided Direct cannulation and USG-guided Seldinger techniques in adult patients with anticipated difficult radial arterial cannulation.

Key facts

Study ID

NCT07400627

Run by

Diskapi Teaching and Research Hospital

People needed

242

Starts

2026-03-01

Expected to finish

2026-09-30

Last updated by the study team

2026-02-10

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients aged 18 years or older
• American Society of Anesthesiologists (ASA) physical status I-IV
• Patients scheduled for cardiovascular surgery requiring invasive arterial monitoring

You may not qualify if…

• Patients undergoing emergency surgery
• Coagulation disorders or known coagulopathy
• Presence of an arteriovenous fistula
• Patients in shock or hemodynamically instable
• Patients requiring mechanical circulatory support
• History of Raynaud's phenomenon
• Refusal to participate in the study

Where it is running

• Ankara Etlik City Hospital — Ankara, Turkey (Türkiye)

Full record on ClinicalTrials.gov

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