View clinical trials related to Radial Artery.
Filter by:Allotransplants of vascularized composite tissues are subject to chronic vascular rejection, which can lead to graft loss. Currently, no imaging technique allows a reproducible quantitative exploration of the arterial trees of the hand, and therefore a satisfactory monitoring of transplants. Since 2014, flow MRI has been applied to the analysis of small-calibre arteries by the Image Processing Team at the Amiens-Picardie University Hospital. Between 2015 and 2017, several acquisitions were made in 3 patients who received facial allotransplantation, and the team recently developed a flow MRI protocol dedicated to the study of arterial trees in the hand. The main objective is to measure vascular flows of radial, ulnar and interdigital arterial trees in normal (healthy volunteers) and pathological situations (patients with radial forearm flap reconstruction and patients with hand allotransplantation) using the specifically developed flow MRI protocol.
The left distal radial approach (DRA) has been introduced as a feasible and safe alternative route of the radial artery. However, there is still lack of evidence for DRA regarding the feasibility, safety, effective time for hemostasis and hemostasis method. This prospective multicenter registry aimed to investigate the safety and efficacy of DRA for CAG and PCI.
In this prospective, randomized, open-labeled study, the intensive care patients will be selected for ultrasound-guided cannulation of the radial artery in three different regions. Patients will be divided into three groups with simple randomization. The first group will be determined as 'G1' and the radial artery catheterization with ultrasound-guided short axis out of plane intervention will be performed over 2 cm of the wrist for this group. On the second group (G2), radial artery catheterization will be performed in the distal 3/4 area of the forearm with ultrasound-guided short axis out of plane intervention. On the third group (G3), radial arterial catheterization will be performed in the distal 1/2 area of the forearm with ultrasound-guided short axis out of plane interference. Whether there is a difference in the duration of use of arterial cannula, first entry success rates, duration of intervention, number of procedures, the number of cannulas used and the effects on early and late complications and advantages between the groups will be investigated.
After performing a radial angiography/percutaneous coronary intervention (CAG/PCI), the sheath is removed and a compression device is used to achieve hemostasis. Recent studies have indicated that rapid deflation techniques resulting in early removal of the compression device is associated with a low incidence of radial artery occlusion (RAO). The purpose of the present study is to evaluate whether an even faster removal of the compression device can be achieved if using oximetry guided rapid deflation compared to traditional rapid deflation, and whether this is associated with a lower incidence of RAO.
The purpose of this study is to collect data about the efficacy of utilizing distal topical heat application for dilatation of the radial artery. Transradial arterial access is widely accepted as the standard of care for cardiac catheterization procedures due to its increased patient comfort and significantly decreased risk of major vascular complications, and has been recently utilized in increasing volume by the interventional radiology community throughout the world. Due to the small size of the radial artery, catheterization may sometimes be technically difficult. Pre-procedure dilatation can make catheterization significantly easier, and studies have demonstrated the successful ability to dilate the radial artery with the use of topical nitroglycerin and lidocaine. However, the investigators hypothesize that utilizing topical heat applied distally can create a physiologic vasodilatation similar to that created with nitroglycerin and lidocaine, but at a significantly lower cost and with less risk due to no need for application of a medication which has a systemic effect with known side effects. The purpose of this study is to test the efficacy of radial artery vasodilatation with distal topical heat application.
In this study, the investigators will investigate how patients' radial artery diameters change according to sex, age, height, weight and body mass index by measuring radial artery diameter using ultrasonography. The correlation of Allen test with doppler ultrasonography will also be evaluated.
Previous studies have demonstrated that an experienced ultrasound operator is able to efficiently perform radial arterial puncture on patients where an initial operator failed to puncture arteries via simple palpation. The objective of this study is to compare "difficult-to-puncture" patients randomized into two groups: one group where ultrasound is used to aid artery localisation, and one group where only palpation is used.
The investigators aim to determine if ultrasound guidance results in improved technique when drawing blood via a radial artery puncture.