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How does epinephrine affect the heart

A 52-year-old member asked:
Dr. Quang Nguyen
Specializes in Endocrinology
Increase rate: Epineprines bind to b1 receptor on the heart and increase heart rate.
Dr. Calvin Weisberger
50 years experience Cardiology
Epinephrine: Epi causes both blood vessel constriction and increased force of contraction. It usually also increases the rate of contraction. It usually increases ... Read More
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A 35-year-old female asked:
Dr. Joseph Mele
31 years experience Plastic Surgery
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 admi ... Read More
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A 33-year-old member asked:
Dr. Quang Nguyen
Specializes in Endocrinology
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 recepto ... Read More
Dr. Mircea Petrina
23 years experience Cardiology
It is normal: It does it naturally by direct heart stimulation.
A 33-year-old member asked:
Dr. William Jenkins
Specializes in Anesthesiology
It blocks: potassium channels. I doubt you will find Halothane anymore in any US operating room
A 44-year-old member asked:
Dr. Mark Stern
45 years experience Cardiology
Yes: Yes . It is a common complication of it.
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A 21-year-old female asked:
Dr. David Sneid
40 years experience Endocrinology
That's it's job: Epinephrine is supposed to increase heart rate, blood pressure and the force of contraction. That's what palpations are.
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A 33-year-old member asked:
Dr. Dennis Clifford
A Verified Doctor answered
A US doctor answered Learn more
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 caus ... Read More
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A 19-year-old male asked:
Dr. William Jenkins
Specializes in Anesthesiology
Normally your: Heart is slowed by the vagus nerve, removing the vagus effect increases your rate then the catecholamines take over for further increase
A 46-year-old member asked:
Dr. Elden Rand
20 years experience Cardiology
Depends: If a person is having anaphylactic shock, their blood vessels may suddenly dilate. This can cause their blood pressure to drop, sometimes quite co ... Read More
A 25-year-old male asked:
Dr. Michael Kleerekoper
A Verified Doctor answered
A US doctor answered Learn more
Epinephrine: Any time you have a problem as you report you must see your primary doctor to get things under better control.

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