Comparison of Dobutamine and Regadenoson Stress Cardiac Magnetic Resonance (MR)

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare MD Questionnaire

The Compare MD tool have the following scales: Ease of Administration - Scale from 1(most easy among all MRI stress tests) to 5(most difficult), low score represent better outcome. Patient Comfort - Scale from 1(very comfortable) to 4(very uncomfortable), low score represent better outcome. Interruptions during the procedure - Scale from 1(1-2) to 4(\>6), low score represent better outcome. Side effects - Scale from 1(fewer than any other MRI stress test) to 4(the most), low score represent better outcome. Level of anxiety while during the procedure - Scale from 1(less than any other MRI stress test) to 4(the most), low score represent better outcome. Overall rating of the procedure (1 very Difficult to 5 very easy), higher scores represent better outcomes.

Time frame: 1 day

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare MD Questionnaire (Episodes of Arrhythmias, Bradycardia, and Wheezing)

Ease of Administration of regadenoson versus intravenous dobutamine using Compare MD Questionnaire. Episodes of arrhythmias (including PVCs) and bradycardia (HR\<60), low score represent better outcome. Number of Episodes of wheezing and SPO2\<94%, low numbers represent better outcome.

Time frame: 1 day

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare Tech Questionnaire

To compare the ease of administration of regadenoson verses intravenous dobutamine during pharmacological stress testing in individuals with moderate to severe chronic obstructive pulmonary disease (COPD) or asthma. Patient Comfort - Scale from 1(very comfortable) to 4(very uncomfortable), low score represent better outcome. Interruptions during the procedure - Scale from 1(1-2) to 4(\>6), low score represent better outcome. Level of monitoring - Scale from 1(most easy among all MRI tests) to 4(most difficult), low score represent better outcome. Level of anxiety while during the procedure - Scale from 1(less than any other MRI stress test) to 4(the most), low score represent better outcome. Overall rating of the procedure - Scale from 1(very difficult) to 4(very easy), higher scores represent better outcome.

Time frame: 1 day

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare Tech Questionnaire (Episodes of Wheezing)

To compare the ease of administration of regadenoson verses intravenous dobutamine during pharmacological stress testing in individuals with moderate to severe chronic obstructive pulmonary disease (COPD) or asthma. Low scores represent better outcome.

Time frame: 1 day

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare Nurse Questionnaire

To compare the ease of administration of regadenoson verses intravenous dobutamine during pharmacological stress testing in individuals with moderate to severe chronic obstructive pulmonary disease (COPD) or asthma. Ease of Administration - Scale from 1(most easy among all MRI stress tests) to 5(most difficult), low score represent better outcome. Patient Comfort - Scale from 1(very comfortable) to 4(very uncomfortable), low score represent better outcome. Interruptions during the procedure - Scale from 1(1-2) to 4(\>6), low score represent better outcome. Side effects - Scale from 1(fewer than any other MRI stress test) to 4(the most), low score represent better outcome.

Time frame: 1 day

Ease of Administration of Regadenoson Versus Intravenous Dobutamine Using Compare Nurse Questionnaire (Episodes of Arrhythmias, Bradycardia, Hypertension, and Wheezing)

To compare the ease of administration of regadenoson verses intravenous dobutamine during pharmacological stress testing in individuals with moderate to severe chronic obstructive pulmonary disease (COPD) or asthma. Episodes of (SBP\>140), low number represent better outcome. Episodes of arrhythmias (including PVCs) and bradycardia (HR\<60), low number represent better outcome. Episodes of wheezing and SPO2\<94%, low number represent better outcome.

Time frame: 1 day