Local Warming Technique for Arterial Cannulation in Adult Patients

  • End date
    Dec 31, 2022
  • participants needed
  • sponsor
    Pusan National University Yangsan Hospital
Updated on 30 July 2021


Based on the fact that arterial vasodilation can be advantageous for endovascular catheterization and that an increase in body temperature can cause vasodilation by activating the cholinergic active vasodilator system, this study was planned to observe whether there was a significant change in the diameter of artery through ultrasound and to confirm the effectiveness of heating in the traditional palpation technique and the US-guided technique after local warming of the insertion site of arterial catheter in adult patients undergoing cardiac surgery.


Arterial cannulation is one of the important clinical techniques commonly used for real-time monitoring of blood pressure changes or when repeated blood tests are required. However, complications such as bleeding, hematoma, and vascular occlusion may occur if the operator has little or no experience in the procedure, or if arterial cannulation is not easy due to the patient's underlying disease and systemic factors. This situation prolongs the anesthesia induction time and may cause great harm to the patient in cases with a high bleeding tendency, such as in cardiac surgery. Various studies have reported various arterial cannulation techniques so far, and there have been many advances in arterial cannulation techniques due to the general use of ultrasound (hereafter US). However, there is still a risk of complications due to inexperience in the use of US or poor vascular status of the patient.

Condition Cardiac Disease Which Should be Treated by Surgery
Treatment warming to increase local skin (puncture site) temperature
Clinical Study IdentifierNCT04969692
SponsorPusan National University Yangsan Hospital
Last Modified on30 July 2021


Yes No Not Sure

Inclusion Criteria

Adult patients over 18 years of age undergoing cardiac surgery under general anesthesia

Exclusion Criteria

If the patient already has an arterial catheter and does not need additional arterial cannulation
When arterial cannulation is performed on an artery other than the radial artery due to the surgical technique or the patient's condition
When the patient's condition is urgent, such as emergency surgery, and there is no time to proceed with the research
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