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Assessment of Stroke Volume and Cardiac Output in Response to Varying Heart Rates

Vasovagal Syncope

The investigators will seek to determine the effects of different heart rates on both stroke volume and cardiac output using non-invasive hemodynamic assessments. In order to safely manipulate the HR, the investigators will study patients with permanent pacemakers in whom heart rate manipulation can be done in a safe and non-invasive manner.

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Conditions de participation

  • Sexe:

    ALL

  • Âges admissibles:

    18 to 70

Critères de participation

Inclusion Criteria:

* Age 18-70 years (inclusive)
* Implanted permanent pacemaker or implanted defibrillator capable of atrial and ventricular pacing
* LV ejection fraction \>50%

Exclusion Criteria:

* Unable or unwilling to provide informed consent
* Clinical need for a cardiac resynchronization device

Lieu de l'étude

University of Calgary
University of Calgary
Calgary, Alberta
Canada

Contactez l'équipe d'étude

Backup Contact

Robert S Sheldon, MD, PhD

[email protected]
403-220-8191
Primary Contact

Satish R Raj, MD, MSCI

[email protected]
403-210-6152
Étude parrainée par
University of Calgary
Participants recherchés
Plus d'informations
ID de l'étude: NCT03446326