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Could infants with fast heartbeat stop meds sooner?

NCT ID NCT04837261

Completed Disease control Sponsor: Tampere University Hospital Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether infants with supraventricular tachycardia (SVT) can safely stop antiarrhythmic medication after just 4 months instead of longer. Researchers followed 107 infants aged 6 months or younger who were treated with drugs like propranolol or flecainide. The main goal was to see how many had a return of SVT after stopping medication early.

What this could mean

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

Active substance
Propranolol, Flecainide, Amiodarone
What this could lead to
If successful, this could show that a shorter course of medication is safe and effective for infants with SVT, reducing drug exposure.
What could go wrong
This is an observational study, not a randomized trial, so results may be less reliable. The shorter course might lead to more recurrences of SVT.

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.

Arrhythmias, Cardiac Tachycardia, Supraventricular

As listed by the trial registrant

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

SUPRAVENTRICULAR TACHYCARDIA

Contacts and locations

Locations

  • Central Finland Central Hospital

    Jyväskylä, Central Finland, 40620, Finland

  • Helsinki University Hospital

    Helsinki, Uusimaa, 00029, Finland

  • Hämeenlinna Central Hospital

    Hämeenlinna, Kanta-Häme, 13530, Finland

  • Kajaani Central Hospital

    Kajaani, Kainuu, 87300, Finland

  • Kokkola Central Hopsital

    Kokkola, Keski-Pohjanmaa, 67200, Finland

  • Kuopio University Hospital

    Kuopio, Northern Savonia, 70029, Finland

  • Kymenlaakso Central Hospital

    Kotka, Region of Kymenlaakso, 48210, Finland

  • Lahti Central Hospital

    Lahti, Paijat-Hame Region, 15850, Finland

  • Lapland Central Hospital

    Rovaniemi, Lapland, 96101, Finland

  • Mikkeli Central Hospital

    Mikkeli, South Savo, 50100, Finland

  • North Karelia Central Hospital

    Joensuu, Pohjois-Karjala, 80210, Finland

  • Oulu University Hospital

    Oulu, North Ostrobothnia, 90220, Finland

  • Sakunta Central Hospital

    Pori, Satakunta, 28500, Finland

  • Seinäjoki Central Hospital

    Seinäjoki, South Ostrobothnia, 60220, Finland

  • South Karelia Central Hospital

    Lappeenranta, South Karelia Region, 53130, Finland

  • Tampere University Hospital

    Tampere, Pirkanmaa, 33520, Finland

  • Turku University Hospital

    Turku, Southwest, 20521, Finland

  • Vaasa Central Hospital

    Vaasa, Pohjanmaa, 65130, Finland

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