Question 1

what is the difference between persantine and dobutamine?

Accepted Answer

Drugs for Heart Test: Chemical stress tests are used to diagnose heart artery blockage in people who cannot treadmill exercise. Persantine is injected IV and dilates normal blood vessels more than abnormal ones causing an ischemic defect on a nuclear image.  Dobutamine is injected IV and increases the heart rate and contractility with muscle fed by a blocked artery not responding as well as normal muscle.

Question 2

are the results comparable with dipyridamole and a dobutamine stress echo?

Accepted Answer

No: Dipyridamole is not being used widely for stress echo because of difficulty in interpretation -- but if we compare Dobutamine stress echo and Dipyridamole stress nuclear imaging, then yes, they are comparable in both sensitivity and specificity of the results --.

Question 3

what is the difference between dopamine and dobutamine?

Accepted Answer

Natural/synthetic: Dopamine is a naturally occuring catecholamine with numerous physiologic functions including neural transmission and BP regulation. Dobutamine is a synthetic drug used for testing and cardiac stimuation.

Question 4

what's the difference between a lexiscan stress test & a stress echo dobutamine test? i have had the lexiscan before.

Accepted Answer

Lexiscan: The lexi study uses radioisotopes for imaging, the echo study uses ultrasound and no radioactive exposure.  Lexiscan agent is not a heart stimulant, Dobutamine is. The images obtained are different also.

Question 5

what are the differences between levophed, (norepinephrine) dopamine and dobutamine?

Accepted Answer

Receptors: These three medications are used to support the heart and cardiovascular system ie. blood pressure and heart rate. They are known as sympathomimetics and have a similar response to what you would think of as adrenaline. Each has variable effect on either heart rate, heart function (in terms of strength of 'squeeze') and on blood vessels which would translate to higher blood pressure.

Question 6

i was wondering what are the differences of levophed, (norepinephrine) dopamine and dobutamine in terms of their action?

Accepted Answer

You Asked for It----: Dobutamine- direct b1 receptor stimulant or agonist in the sympathetic nervous system.

Levophed- vasoconstrictor peripherally (alpha adrenergic effects) and beta adrenergic stimulant at the level of the heart and coronary vessels

dopamine- dual b1 and Alpha adrenergic effects.  Useful in hypovolemic shock because of conservancy of renal blood flow.  Also, works centrally in other complex ways.

Question 7

can you explain the differences between levophed, (norepinephrine) dopamine, and dobutamine?

Accepted Answer

Alters physiology: These are very simple answers to a complex question. Levophed (norepinephrine) increases blood pressure; Dopamine increases heart rate, blood pressure and cardiac function (contractility); Dobutamine increases cardiac contractility and heart rate.

Question 8

help please! is dobutamine a beta blocker?

Accepted Answer

No: Dobutamine is a beta agonist, the opposite of a beta blocker.

Question 9

can you describe a dobutamine stress test?

Accepted Answer

IV Chemical Stress: An intravenous is started . A radioactive substance is given and a picture of the heart muscle at rest is taken. Then Dobutamine is dripped in to increase the heart rate ( instead of walking on a treadmill) . Then another picture is taken of the heart muscle. The pictures are compared. The pictures look like donuts. If there is a bite out of the donut , that means less or no blood is going there.

Question 10

what is persantine stress test done for?

Accepted Answer

Test for blockages: Persantine is used to augment changes seen in stress testing when coronary arteries have a blockage that limits flow.

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Doctor answers about:

What is the difference between persantine and dobutamine

A member asked:

What is the difference between persantine and dobutamine?

A member asked:

Are the results comparable with dipyridamole and a dobutamine stress echo?

A member asked:

What is the difference between dopamine and dobutamine?

A member asked:

What's the difference between a lexiscan stress test & a stress echo dobutamine test? i have had the lexiscan before.

A member asked:

What are the differences between levophed, (norepinephrine) dopamine and dobutamine?

A member asked:

I was wondering what are the differences of levophed, (norepinephrine) dopamine and dobutamine in terms of their action?

A member asked:

Can you explain the differences between levophed, (norepinephrine) dopamine, and dobutamine?

A member asked:

Help please! is dobutamine a beta blocker?

A member asked:

Can you describe a dobutamine stress test?

A member asked:

What is persantine stress test done for?

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