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Why does epinephrine increase heart rate

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.

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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
Dr. Doug Mason
32 years experience Podiatry
Many factors: humidity, altitude, oxygen tension, thermal are just a few examples. Dehydration as well as increasing the core body temp are very influential on rais ... Read More
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A 52-year-old female asked:
Dr. David Sneid
40 years experience Endocrinology
Should be fine: Actually the Epinephrine in dental work is injected with the novocaine to keep the pain killer in place rather than it leaking out into the circulatio ... Read More
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Dr. Shirley Wong
19 years experience Endodontics
Epinephrine: The Epinephrine in the local anesthetic is used to prolong the period of time you will remain numb. Very little if any should get into the blood strea ... Read More
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Dr. Gary Sandler
53 years experience Dentistry
Epinephrine: After over 40 years of dental practice I have had only a handful of patients who truly are sensitive to Epinephrine in local anesthetics. Almost all p ... Read More
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A 19-year-old female asked:
Dr. Donald Colantino
60 years experience Internal Medicine
Paradoxical: When given intravenously adrenaline may raise the blood pressure so quickly that a reflex slowing of the heart rate kicks in. If you didn't receive i ... Read More
A 19-year-old male asked:
Dr. Ronald Herring
16 years experience Anesthesiology
EPI: It increases heart rate and blood pressure (sometimes dangerously). It causes vasoconstriction. Variable effect on pain but generally increases sensit ... Read More
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A 24-year-old male asked:
Dr. Gerald Neuberg
37 years experience Cardiology
Doubtful: Interesting ability but, if there are no other issues, it doesnt sound like a medical problem, unless it's happening when you are not paying attention ... Read More
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A 49-year-old female asked:
Dr. Ajay Acharya
A Verified Doctor answered
A US doctor answered Learn more
Depends..: If you have pheochromocytoma.......you need different treatment...even surgery....need further check up.
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A 18-year-old male asked:
Dr. Yelena Kipervas
22 years experience Family Medicine
Explanation : Yes! Absolutely! Heart rate increases not only with stress or physical exercise, but with any positive impression. Singing is physical activity and s ... Read More
A 34-year-old member asked:
Dr. John Kayvanfar
45 years experience Sports Medicine
Very much: Very much. That is why under extreme circumstances, specially dangerous one your body produces it to keep you very alert with increase heart rate.

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