Question 1

how does epinephrine affect the heart?

Accepted Answer

Increase rate: Epineprines bind to b1 receptor on the heart and increase heart rate.

Question 2

why does epinephrine increase heart rate?

Accepted Answer

Binding receptors: Do you mean how does it increase heart rate?  The mechanism of action is quite complicated but in simple term, it binds to the beta adrenergic receptors on the heart leading to changes in calcium level and increases in the firing rate of the pacemaker cells.

Question 3

can you tell me how halothane sensitizes the heart to epinephrine?

Accepted Answer

It blocks: potassium channels. I doubt you will find Halothane anymore in any US operating room

Question 4

how long can epinephrine affect your heart?

Accepted Answer

A few minutes: The half-life of Epinephrine is about 2 minutes. We constantly release small amounts. This is increased by the "fight or flight" reflex, and when administered medically. The most common use is in local anesthesia, and the effects wear off quickly.

Question 5

why would epinephrine cause heart palpitations?

Accepted Answer

That's it's job: Epinephrine is supposed to increase heart rate, blood pressure and the force of contraction. That's what palpations are.

Question 6

epinephrine -- does it's use cause a heart attack or stroke?

Accepted Answer

Sometimes: In the event it is used when someone has coronary artery disease of cerebrovascular disease and they can't handle the increased blood pressure it causes, a stroke or heart attack is possible. Hopefully it isn't used in this circumstance unless there is no other choice.

Question 7

what makes heart rate increase during exercise besides epinephrine?

Accepted Answer

Normally your: Heart is slowed by the vagus nerve, removing the vagus effect increases your rate then the catecholamines take over for further increase

Question 8

should i inject someone with an epipen (epinephrine) if that person has no heart beat?

Accepted Answer

Depends: If a person is having anaphylactic shock, their blood vessels may suddenly dilate. 

This can cause their blood pressure to drop, sometimes quite considerably.

If the blood pressure is too low, the pulse may not be able to be felt; the heart is, however, still beating in this case.

If a person is having anaphylactic shock, they need emergent treatment.

Question 9

adverse effect of epinephrine is arthymia of the heart, why? our body makes this naturally and designed to use it so why would it cause this effect?

Accepted Answer

Epinephrine: Any time you have a problem as you report you must see your primary doctor to get things under better control.

Question 10

can novacaine cause a heart attack? what are the side effects of epinephrine?

Accepted Answer

Novacaine: An over dose of novacaine can cause arrhythmias which can lead to  a heart attack.
Epinephrine can cause tachycardia which can lead to heart ischemia or less blood to the heart and cause a heart attack, but usually Epinephrine wears off quickly if given in small doses. If you are experiencing these, please see your physician asap.

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Doctor answers about:

How does epinephrine affect the heart

A member asked:

How does epinephrine affect the heart?

A member asked:

Why does epinephrine increase heart rate?

A member asked:

Can you tell me how halothane sensitizes the heart to epinephrine?

A member asked:

How long can epinephrine affect your heart?

A member asked:

Why would epinephrine cause heart palpitations?

A member asked:

Epinephrine -- does it's use cause a heart attack or stroke?

A member asked:

What makes heart rate increase during exercise besides epinephrine?

A member asked:

Should i inject someone with an epipen (epinephrine) if that person has no heart beat?

A member asked:

Adverse effect of epinephrine is arthymia of the heart, why? our body makes this naturally and designed to use it so why would it cause this effect?

A member asked:

Can novacaine cause a heart attack? what are the side effects of epinephrine?

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