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Double shocks: could two defibrillators save more cardiac arrest patients?

NCT ID NCT06672159

Recruiting now Disease control Sponsor: St. Olavs Hospital Source: ClinicalTrials.gov ↗

First seen Jul 21, 2026 · Last updated Jul 22, 2026 · Updated 1 time

Summary

This trial tests whether using two defibrillators in rapid succession, rather than one, can improve survival in people whose hearts stop outside a hospital. The procedure, called double sequential external defibrillation (DSED), is normally tried only after several failed attempts with a single defibrillator. Here, it is given as the first treatment for patients with a shockable heart rhythm. The study compares survival rates and neurological recovery between the two approaches.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Two defibrillators used in rapid sequence (double sequential external defibrillation)
What this could lead to
If it works, this could become a new standard approach to restart the heart in people with cardiac arrest, potentially saving more lives.
What could go wrong
This is a relatively small trial, and the procedure may not improve outcomes or could cause harm if shocks are given too close together.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

cardiac arrest Out-of-Hospital Cardiac Arrest sudden cardiac arrest ventricular fibrillation

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CARDIAC ARREST OUT-OF-HOSPITAL CARDIAC ARREST VENTRICULAR FIBRILLATION

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Email: •••••@•••••

Locations

  • St Olavs Hospital

    RECRUITING

    Trondheim, 7030, Norway

    Contact Email: •••••@•••••

    Contact

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