Exploring the Effect of Pre-Connected Pressure Sensor on Ultrasound-Guided Radial Artery Puncture in Patients With Gastrointestinal Tumors: A Randomized Controlled Trial

Abstract

Background: This study aims to investigate the impact of pre-connecting pressure transducers on the efficacy of ultrasound-guided radial artery puncture and catheterization in patients with gastrointestinal tumors. Methods: Seventy-five eligible patients undergoing elective gastrointestinal tumor surgery were randomly divided into two groups: the pre-connected pressure sensor puncture group (group p = 38) and the conventional puncture group (group C = 37). The patients' vital signs were monitored upon entering the room, and a senior anesthesiologist performed the radial artery puncture and catheterization for both groups. The radial artery puncture catheterization was guided by ultrasound in both groups. Prior to the puncture, patients in group P were pre-connected to the pressure sensor, and the system was primed with heparinized saline solution to expel air from the system. After zeroing, the radial artery puncture catheter was performed under ultrasound guidance, with group C undergoing direct ultrasound-guided puncture catheterization. The success rate of first puncture catheterization, puncture time, puncture times, and puncture failure rate were recorded. Results: The success rate of radial artery catheterization on the first attempt was significantly higher in group P compared to group C (p = 0.046). In comparison to patients in group C, those in group P exhibited a reduction in arterial puncture failure rates (p = 0.04) and a lower incidence of subcutaneous hematoma (p = 0.02). Conclusions: Pre-connecting a pressure sensor when performing radial artery puncture and catheterization in patients with gastrointestinal tumors can enhance the success rate of radial artery puncture and catheterization under ultrasound guidance. Trial Registration: ChiCTR.org.cn (ChiCTR2200064863). Date of registration: 4/5/2024.