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Why does a heart rate decrease in the cold

A 23-year-old female asked:
Dr. Venkata Chilakapati
Cardiology 23 years experience
Heart Rate: Shivering is a well-known response, but a less obvious reaction is heart rate increase. In cold weather, a faster heartbeat benefits muscular and resp... Read More

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A 39-year-old male asked:
Dr. Calvin Weisberger
Cardiology 51 years experience
Cold: When your body core temperature drops significantly, bradycardia(slow heart rate) usually occurs.
A 24-year-old female asked:
Dr. Julan Crane
Pediatrics 25 years experience
Cold: Do you mean cold as in upper respiratory infection? You can have a slightly elevated heart rate when you are ill but it should not be significantly fa... Read More
Dr. Volkan Tuzcu
Pediatric Cardiology 31 years experience
Heart : Yes, especially more so with fever
Dr. Dean Giannone
Internal Medicine 25 years experience
HR and fever.: Generally, with a fever your heart rate will increase ten beats per minute for every degree increase of your temperature above your normal temperature... Read More
A 35-year-old member asked:
Dr. Videh Mahajan
Internal Medicine 25 years experience
Diabetes: There is no direct correlation, however, prolonged hyperglycemia can lead to diabetic coma which inturn can effect your heart rate.
A 37-year-old member asked:
Dr. Michelle Zetoony
Sleep Medicine 18 years experience
Decrease: In general it decreases. When cells are bathed in too much glucose this changes the osmotic potential and they get sluggish and lethargic. Not enoug... Read More
A 44-year-old member asked:
Dr. Eric Lullove
Podiatry 19 years experience
Dizzy Spell?: Orthostatic hypotension, also known as postural hypotension (dizzy spells) is a form of hypotension in which a person's blood pressure suddenly falls ... Read More
A member asked:
Dr. Ira Friedlander
Cardiac Electrophysiology 42 years experience
This could be: serious. Take him for evaluation as soon as possible.
A 40-year-old member asked:
Dr. Bennett Werner
Cardiology 44 years experience
Increases: If it doesn't increase, you need to see a doctor! (the condition is called "chronotropic incompetence").
A 16-year-old male asked:
Dr. Heidi Fowler
Psychiatry 25 years experience
Upper respiratory: infections can impact the immune system which can then impact your endocrine & nervous system. As these interplay - an elevated heart rate may o... Read More
A 20-year-old female asked:
Dr. Heidi Fowler
Psychiatry 25 years experience
Don't know how: high your heart rate is. This lists pregnancy as a condition - is that accurate? If so, pregnancy combined with a viral infection and exertion might b... Read More

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