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Doctor insights on: How Does Epinephrine Affect The Heart

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How does epinephrine affect the heart?

How does epinephrine affect the heart?

Epinephrine: Epi causes both blood vessel constriction and increased force of contraction. It usually also increases the rate of contraction. It usually increases blood pressure and cardiac output. These are acute effects. ...Read more

Dr. Ronald Krauser
465 Doctors shared insights

Adrenaline (Definition)

Adrenalin (e) / Epinephrine is the hormone produced by the adrenal medulla that speeds and strengths the heart, dilates the airways, and shifts blood flow to the muscles. Often this is in response ...Read more


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How long can epinephrine affect your heart?

How long can epinephrine affect your heart?

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. ...Read more

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Why does epinephrine increase heart rate?

Why does epinephrine increase heart rate?

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. ...Read more

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

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

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

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Why would epinephrine cause heart palpitations?

Why would epinephrine cause heart palpitations?

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

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

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

Maybe: There is too much of a good thing. Epinephrine is a natural hormone with necessary functions. Too much can, and does, cause heart attack, hypertension, anxiety, stroke. Aside from exogenous sources, few natural conditions cause excess Epinephrine (eg, pheochromocytoma). ...Read more

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What makes heart rate increase during exercise besides epinephrine?

What makes heart rate increase during exercise besides epinephrine?

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 raising your heart rate. How good your fitness level is also important. ...Read more

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

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

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. ...Read more

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Can't use epinephrine I get rapid heart rate, endodontist wants to give me 20 mg Valium crushed 1/2 hour before root canal. Is this ok?

Can't use epinephrine I get rapid heart rate, endodontist wants to give me 20 mg Valium crushed 1/2 hour before root canal. Is this ok?

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 patient who say they react with an increased heart rate do so because of the release of their own epi due to anxiety, or react from poor injection technique. Ask your dentist about the use of sweet air instead of valium. Btw ok with precautions. ...Read more

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

Novacaine heart att: Novacaine can cause heart problems if it is overdosed. Will decrease the absorption of the novacaine into your blood, but it to can cause heart problems when injected directly into the blood stream.

A heart attack happens when the oxygen consumption in the heart exceeds the blood supply to a section of heart. This is more likely to happen whith an unintended bloodstream injection of epinephrine. ...Read more

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What does gait weakness mean? Also, any idea what would cause elevated epinephrine levels and heart rates that race multiple times a night and races at the slightest movement?

What does gait weakness mean? Also, any idea what would cause elevated epinephrine levels and heart rates that race multiple times a night and races at the slightest movement?

Pheochromocytoma: A pheochromocytoma is a growth in the area of the adrenal glands that causes hypertension, elevated catecholamine levels and palpitations. It is not a common condition and an endocrinologist is best qualified to evaluate for one and I recommend that you consult one in view of your symptoms. He/she will order the appropriate tests and refer you to a cardiologist if it is deemed advisable. ...Read more

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How high does epinephrine have to be to be considered a pheochromocytoma? Also, I have attacks multiple times a night (every night) with heart rates as high as 174bpm. Used to have episodes of nausea,

How high does epinephrine have to be to be considered a pheochromocytoma? Also, I have attacks multiple times a night (every night) with heart rates as high as 174bpm. Used to have episodes of nausea,

This question is: Really complex, and I am concerned that an answer may only make things more confusing if it is too specific. I think in situations like this a thorough history and physical by an internal medicine doctor and possibly a second opinion would be a great way to shed light on something that seems foggy. Pheochromocytoma is truly rare. There are common things that should be looked into first. Best 2 U. ...Read more

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The dentist may use anesthetic such as 0.3ml lidocaine with 1:100, 000 epinephrine. Would this interact/ have problems with my heart or BP medication.

The dentist may use anesthetic such as 0.3ml lidocaine with 1:100, 000 epinephrine. Would this interact/ have problems with my heart or BP medication.

Little concern: Stress form the procedure, particularly if you were not numb, would cause your body to release more Epinephrine then what is in the local anesthetic.
That said I do try to error on the side of caution depending on the heart condition by not using the maximum dose (approximately 8 full injections) and breaking up multiple procedures over several appointments. ...Read more

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What does ER do if a patient with heart disease and tachycardia has anaphylaxis shock? Do they still give epinephrine injection?

What does ER do if a patient with heart disease and tachycardia has anaphylaxis shock? Do they still give epinephrine injection?

Usualloy yes.: Tachycardia is frequently caused by anaphylaxis. The only drug that truly treats the condition is epinephrine. Therefore, the drug should still be used in patients with heart disease. However, a good way of reducing the danger from the medication is to give lower initial doses, e.g. A pediatric dose of 0.15mg im, which can be repeated every 10 minutes as necessary. ...Read more

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Is epinephrine in dental anaesthesia enough to cause ventricular fibrillation? No heart issues just PACS and PVCs a few times per day. Had echo normal

Is epinephrine in dental anaesthesia enough to cause ventricular fibrillation? No heart issues just PACS and PVCs a few times per day. Had echo normal

Very scary: B"sd
epinephrine could possibly make your irritable heart more irritable and lead to various, even G-d forbid fatal arrythmias. Would avoid epinephrine. If needed only in a medical facility with ability to treat cardiac emergencies. ...Read more

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Had 14 day loop and had sinus tachycardia with heart rates 55-180bpm. Also the 180 occurs when sleeping or lying in bed. Cardiologist not sure why tach occurs every night. Elevated epinephrine? Ideas?

Had 14 day loop and had sinus tachycardia with heart rates 55-180bpm. Also the 180 occurs when sleeping or lying in bed. Cardiologist not sure why tach occurs every night. Elevated epinephrine? Ideas?

Tachycardia: I recommend you to see an electrophysiologist, you maybe having inappropriate sinus tachycardia, focal atrial tachycardia besides possibility of normal rhythm acceleration. You can consult me also if you have ECG Holter echo results. Www. Healthtap. Com/volkantuzcu ...Read more

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What are norepinephrine and epinephrine's effects on heart rate, blood pressure, vasoconstriction, sensitivity to pain, and heat production.

What are norepinephrine and epinephrine's effects on heart rate, blood pressure, vasoconstriction, sensitivity to pain, and heat production.

EPI: It increases heart rate and blood pressure (sometimes dangerously). It causes vasoconstriction. Variable effect on pain but generally increases sensitivity and because it ramps up your metabolism it increases heat production. Follow your docs instructions very carefully and don't freelance. ...Read more

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How high does epinephrine have to be to be considered a pheochromocytoma? Also, I have attacks multiple times a night (every night) with heart rates as high as 174bpm. Used to have episodes of nausea, sweating (have to redo makeup), pounding heart, weak le

Symptom suggest pheo: Complaints are tPlasma Catecholamines (measured by HPLC)
Norepinephrine (80-498 icograms/milliliter)
Epinephrine (4-83 picograms/milliliter)

. Plasma Free Metanephrines (measured by HPLC)
Normetanephrine (18-112 picograms/milliliter)
Metanephrine (12-61 picograms/milliliter)

Above are levels that should have been determined for you by blood and then urine tests and then localizing adrenal scan ...Read more

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Tightness in chest & throat/rapid heart after dental freezing and eye dilation drops. Possible allergy/to what? Dentist said reaction to epinephrine?

Tightness in chest & throat/rapid heart after dental freezing and eye dilation drops. Possible allergy/to what? Dentist said reaction to epinephrine?

Injection Anxiety: Patients receiving dental infiltration anesthesia generally experience anxiety related to the injection. It may feel like your heart is racing, profuse perspiration, pressure, or tightening in your chest; pain in your arms, neck, chest, jaw. Not uncommon. ...Read more

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28 yr-old with 8 yrs of autonomic, endocrinologic, and inflammatory symptoms, which have both a daily pattern and a seasonal pattern.....?

28 yr-old with 8 yrs of autonomic, endocrinologic, and inflammatory symptoms, which have both a daily pattern and a seasonal pattern.....?

Psychologial Tx of physical problems: Andrew, your symptoms indicate the strong possibility of being the consequence of conditioning from earlier life experiences. I say this because of their cyclic nature, the act hat the symptoms are physical does not preclude the cause being psychological.

I urge you to visit www. Stii. Us for expanded information on this possibility. Treatment by Subliminal Therapy is my first recommendation with Hypnotic methods being second (www. Asch. Net for a referral for hypnosis).

Medications can mask symptoms but do not address the problem itself. When you resolve the cause of a problem, you eliminate its symptoms.

Best wishes, Dr. Yager ...Read more

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Adrenaline surges all day long. Do they damage heart?

Sometimes: Only when produced in excess like aniety, panic reaction or harmonal diseases.

It is essentisl in exercise, fright and exciement. ...Read more

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Is it possible that your heart fail without adrenaline?

Yes: When the heart fails, the body automatically activates the kidneys and the central nervous system to produce hormones including Adrenaline to maintain circulation.On a short term it is good for survival but on a long term, continues stimulation of these hormones is harmful. That is why the beta blockers which block adrenaline is one of the most useful drug in the treatment of heart failure ...Read more

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Does having too much adrenaline cause physical damage to the heart?

In excess: But you don't have any way of reaching those levels without a rare endocrine malignancy. See the "adrenaline rush" blog for more information. ...Read more

Dr. Mohammad Shahzad
1,004 Doctors shared insights

Epinephrine (Definition)

Epinephrine is a rhythm control agent which is a ...Read more