Decompensated heart failure or hemodynamic instability
Prior coronary revascularization (PCI or CABG) or myocardial infarction (as evidenced by previously elevated CPK-MB or troponin levels)
Accelerating angina or unstable angina
Inability to physically tolerate MRI or implanted objects that are MRI incompatible
Inability to provide written informed consent obtained at time of study enrollment.
Severe claustrophobia
Advanced heart block or sinus node dysfunction
Hypersensitivity or allergic reaction to regadenoson or adenosine
Hypotension
Active bronchospasm or history of hospitalization due to bronchospasm
History of seizures
Recent cerebrovascular accident
Use of dipyridamole within the last 5 days
Contraindication to aminophylline
Severe renal insufficiency with estimated glomerular filtration rate <30 ml/min/ 1.73 m2
Pregnant or nursing

NCT03249272_exc_T1
Qualifier
Decompensated
NCT03249272_exc_T2
Condition
heart failure
NCT03249272_exc_T3
Condition
hemodynamic instability
NCT03249272_exc_T4
Temporal
Prior
NCT03249272_exc_T5
Condition
coronary revascularization
NCT03249272_exc_T6
Procedure
PCI
NCT03249272_exc_T7
Procedure
CABG
NCT03249272_exc_T8
Condition
myocardial infarction
NCT03249272_exc_T9
Measurement
PK-MB evels)
NCT03249272_exc_T10
Measurement
troponin levels
NCT03249272_exc_T11
Scope
CPK-MB or troponin levels
NCT03249272_exc_T12
Value
elevated
NCT03249272_exc_T13
Temporal
previously
NCT03249272_exc_T14
Scope
previously elevated CPK-MB or troponin levels
NCT03249272_exc_T15
Scope
PCI or CABG
NCT03249272_exc_T16
Condition
Accelerating angina
NCT03249272_exc_T17
Condition
unstable angina
NCT03249272_exc_T18
Condition
Inability to physically tolerate
NCT03249272_exc_T19
Procedure
MRI
NCT03249272_exc_T20
Device
implanted objects
NCT03249272_exc_T21
Qualifier
MRI incompatible
NCT03249272_exc_T22
Scope
MRI or implanted objects that are MRI incompatible
NCT03249272_exc_T24
Qualifier
Severe
NCT03249272_exc_T25
Condition
claustrophobia
NCT03249272_exc_T26
Condition
sinus node dysfunction
NCT03249272_exc_T27
Condition
heart block
NCT03249272_exc_T28
Qualifier
Advanced
NCT03249272_exc_T29
Scope
heart block or sinus node dysfunction
NCT03249272_exc_T30
Condition
Hypersensitivity
NCT03249272_exc_T31
Condition
allergic
NCT03249272_exc_T32
Drug
regadenoson
NCT03249272_exc_T33
Drug
adenosine
NCT03249272_exc_T34
Scope
regadenoson or adenosine
NCT03249272_exc_T35
Scope
Hypersensitivity or allergic
NCT03249272_exc_T36
Condition
Hypotension
NCT03249272_exc_T37
Qualifier
Active
NCT03249272_exc_T38
Condition
bronchospasm
NCT03249272_exc_T39
Observation
history
NCT03249272_exc_T40
Procedure
hospitalization
NCT03249272_exc_T41
Condition
bronchospasm
NCT03249272_exc_T42
Observation
History
NCT03249272_exc_T43
Condition
seizures
NCT03249272_exc_T44
Temporal
Recent
NCT03249272_exc_T45
Condition
cerebrovascular accident
NCT03249272_exc_T46
Drug
dipyridamole
NCT03249272_exc_T47
Temporal
within the last 5 days
NCT03249272_exc_T48
Condition
Contraindication
NCT03249272_exc_T49
Drug
aminophylline
NCT03249272_exc_T50
Qualifier
Severe
NCT03249272_exc_T51
Condition
renal insufficiency
NCT03249272_exc_T52
Measurement
estimated glomerular filtration rate
NCT03249272_exc_T53
Value
<30 ml/min/ 1.73 m2
NCT03249272_exc_T54
Condition
Pregnant
NCT03249272_exc_T55
Condition
nursing