Ignite Creation Date:
2025-12-18 @ 8:27 AM
Ignite Modification Date:
2025-12-18 @ 8:27 AM
Study NCT ID:
NCT05516615
Status:
None
Last Update Posted:
2024-01-10 00:00:00
First Post:
2022-08-23 00:00:00
Is Possible Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
The Predictive Value of the Heart Rate Response to Breathing Maneuvers for Inducible Myocardial Perfusion Deficits
Sponsor:
None
Organization:
Study Overview
Official Title:
The Predictive Value of the Heart Rate Response to Breathing Maneuvers for Inducible Myocardial Perfusion Deficits
Status:
None
Status Verified Date:
2024-01
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
SCREEN-MORE
Brief Summary:
Patients with suspected CAD must have a clinical indication for cardiac stress test based on the clinical judgement of their referring physician and be referred to adenosine stress first-pass perfusion MRI located at the McGill University Health Centre (MUHC). Healthy participants must have no known history of cardiovascular or respiratory diseases. At the time of recruitment, eligible participants will perform the 4-minute breathing maneuver, comprised of 2 minutes of normal breathing and 1-min hyperventilation (rate of 30 breaths or more per minute) followed by a maximal breath-hold. A portable FDA-approved device will be used to record HR and respiration patterns during breathing maneuvers, which enables us to observe the beat-to-beat HR changes during each phase of the breathing maneuvers. On the same day, the participants' socio-demographics, medications, medical history and INTERHEART risk scores will be obtained. Afterwards, patients referred for a stress test will undergo adenosine stress first-pass perfusion MRI as prescribed by their referring physician to validate the findings of the breathing maneuver and detect CAD. Inside the MRI, the participants will also be asked to perform the same 4-min breathing maneuver during Oxygenation Sensitive-Cardiac Magnetic Resonance imaging (OS-CMR) protocol. This imaging technique provides a non-invasive assessment of myocardial oxygenation, relying on the paramagnetic features of deoxygenated hemoglobin as the intrinsic contrast agent.
Detailed Description:
None
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: