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Flu's hidden danger: new study links infection to heart trouble

NCT ID NCT05084846

Knowledge-focused Sponsor: University Hospital, Gentofte, Copenhagen Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study followed 241 adults hospitalized with the flu to see how the infection impacts the heart. Researchers tracked heart complications like new or worsening heart failure, heart attacks, and cardiac arrest. The goal was to better understand the link between influenza and heart problems, which could help doctors improve care for flu patients.

What this could mean

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

What this could lead to
If successful, this research could help doctors better understand and predict heart problems caused by the flu, leading to improved monitoring and care.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to all flu patients, especially those not hospitalized.

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

Study facts

What this study's own registry entry says, in plain language.

Participants

241 people

The number who actually took part.

Started

Jan 2022

Finished

Jun 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Hospitalized patients with laboratory confirmed influenza

Ages

18 years and older

Sex

Anyone

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All patients hospitalized at Herlev \& Gentofte University Hospital with a laboratory-confirmed diagnosis of influenza * \> 18 years of age Exclusion Criteria: * Persons not able to cooperate * Persons unable to understand and sign "informed consent" * Pregnancy * Persons simultaneously positive with COVID-19

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder influenza

As listed by the trial registrant

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

Cardiovascular complication Influenza

Contacts and locations

Locations

  • Cardiovascular Non-Invasive Imaging Research Laboratory, department of Cardiology, Herlev & Gentofte Hospital

    Hellerup, 2900, Denmark

  • Herlev & Gentofte Hospital

    Copenhagen, 2900, Denmark

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