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A Minimally Invasive Model of Aortic Stenosis in Swine
Published on: October 20, 2023
[Comparative evaluation of hydrophilic and standard guide wires for retrograde catheterization of severe aortic
1Département de cardiologie, CHR Reims, rue du Général-Koenig, 51092 Reims.
Insights
This study compared hydrophilic and standard guide wires for aortic stenosis catheterization. Neither guide wire showed superiority, but hydrophilic guide wires were found to be safe for the procedure.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Devices
Background:
- Retrograde catheterization is a key procedure for aortic stenosis.
- Guide wire selection impacts procedural efficiency and safety.
- Hydrophilic guide wires offer potential advantages in terms of lubricity.
Purpose of the Study:
- To compare the feasibility and safety of hydrophilic versus standard guide wires for retrograde aortic stenosis catheterization.
- To assess procedural outcomes including catheterization time and radioscopy duration.
Main Methods:
- Prospective randomized study design.
- Comparison of hydrophilic and standard guide wires in patients with aortic stenosis.
- Assessment of catheterization success (guide in left ventricle < 8 minutes), time to catheterization, and duration of radioscopy.
Main Results:
- No significant difference in catheterization time between hydrophilic (3.12 min) and standard (2.56 min) guide wires (p=0.35).
- Similar durations of radioscopy and number of attempts between groups (p=0.18, p=0.5).
- Two catheterization failures in the standard group vs. three in the hydrophilic group; one tamponade and one transient ischemic cerebral attack in the standard group.
Conclusions:
- Hydrophilic guide wires are not superior to standard guide wires for retrograde aortic stenosis catheterization.
- Hydrophilic guide wires demonstrated an acceptable safety profile in this procedure.
- Further research may be needed to identify specific patient subsets benefiting from hydrophilic guide wires.
Abstract:
The feasibility and safety of using hydrophilic guide wires were compared with those of standard guide wires for retrograde catheterization of aortic stenosis in a prospective randomised study. The performances of the guide wires were assessed by the time taken to catheterize the aortic valve (minutes) and the duration of radioscopy (minutes: grays). The success of the procedure was defined as presence of the guide in the left ventricle in less than 8 minutes. The two patient groups were comparable with respect to the severity of the aortic stenosis. Two failures of catheterisation were observed in the "standard guide wire" group compared with three failures with the hydrophilic guide wire. The mean catheterisation time of the "standard" group was 2.56 minutes compared with 3.12 minutes with the hydrophilic guide wire (p = 0.35 NS). This result was correlated with the duration of radioscopy and number of groups (respectively p = 0.18 NS and p = 0.5 NS). One case of tamponade and a transient ischaemic cerebral attack were observed in the "standard" group. This study does not show the hydrophilic guide wire to be superior to the standard guide wire for catheterisation of aortic stenosis. However, the hydrophilic guide wires were perfectly innocuous for this procedure.
