Device-Assisted vs Standard Valsalva Maneuver for Terminating Supraventricular Tachycardia: A Randomized Clinical...

Area of Science:

• Cardiology
• Medical Devices
• Clinical Trials

Background:

• The Valsalva maneuver (VM) is a guideline-recommended treatment for supraventricular tachycardia (SVT).
• However, the standard VM technique has suboptimal success rates in restoring normal sinus rhythm.
• There is a need for improved methods to enhance VM efficacy.

Purpose of the Study:

• To evaluate the effectiveness of a novel handheld Valsalva assist device.
• The device aims to help patients achieve and maintain target intrathoracic pressures during VM.
• The primary objective was to improve sinus rhythm restoration rates in SVT patients.

Main Methods:

• A single-center, open-label randomized clinical trial was conducted.
• 212 patients with SVT were randomized to either device-assisted VM (n=106) or standard VM (n=106).
• Immediate cardioversion success, confirmed by ECG within 1 minute, was the primary outcome.

Main Results:

• A total of 210 patients completed the study.
• Device-assisted VM resulted in a significantly higher conversion rate to sinus rhythm (63.2%) compared to standard VM (29.2%) within 1 minute.
• The odds ratio for conversion with the device was 4.16 (95% CI, 2.36-7.47; P < .001).

Conclusions:

• The handheld Valsalva assist device significantly enhances the effectiveness of the Valsalva maneuver.
• This device presents a potentially implementable solution for improving SVT management.
• The findings suggest a promising new tool for emergency cardiac care.