Aa
A
A
Close
2066221 tn?1331135817
what is sinus tachycardia?
please explain me what is sinus tachycardia? is it life threatening? or how dangerous is it? and how to cure this? thank you
Cancel
3 Answers
Page 1 of 1
1423357 tn?1414258965
Sinus Tachycardia is a normal physiological response to situations such as exercise, or an increased sympathetic tone with increased catecholamine release—stress, fright, flight, anger. Other causes include:anxiety, fever, dehydration, etc.  IOW, it's normal.  Now.... there are other types of tachycardia which are NOT normal; ventricular tachycardia, supraventricular tachycardia, inappropriate sinus tachycardia, postural orthostatic tachycardia. Do you have the nomenclature correct?

Comment
Cancel
1423357 tn?1414258965
Comment
Comment
Submit Comment
612551 tn?1450025775
You may find the following helpful information:

http://www.medhelp.org/health_pages/Heart/Types-of-Arrhythmia/show/200?cid=78
Comment
Cancel
612551 tn?1450025775
Comment
Comment
Submit Comment
1124887 tn?1313758491
Sinus tachycardia is basically a heart rate above 100 that is not an arrhythmia, in other words, a normal rhythm, but rapid.

As Tom said, there are lots of causes for sinus tachycardia. Some are normal, some are caused by an underlying disease that actually rarely has something to do with the heart.

Normal causes of sinus tachycardia:
- Exercise / physical activity (incl. activities like climbing stairs, sex, etc)
- Stress
- Anxiety
- Emotions
- After heavy meals, especially high-carb meals.
- Standing up too quickly
- Deconditioning

Non-cardiovascular disease causes for sinus tachycardia
- Dehydration (usually caused by low blood pressure)
- Hypoglucemia
- Hyperthyroidea
- Fever
- Pheocromocytoma, carcinoid, and other hormonal disturbances affecting stress hormones (extremely uncommon)
- Infections
- Electrolyte disturbances
- Overactive nervous system.

Cardiovascular causes:
- Shock / severe allergic reactions
- Low blood pressure (usually not dangerous)
- Heart failure
- Heavy bleeding
- Pulmonary embolism

(most of those would cause a lot of symptoms and tachycardia would be the least concern)

If NO cause is found and the heart rate never drops below 100, except during sleep, diagnosis may be "inappropriate sinus tachycardia".

Depending on how rapid the heart rate is, your doctor can decide to treat the condition, or the underlying condition. But sinus tachycardia is usually a normal response.

Comment
Cancel
1124887 tn?1313758491
Comment
Comment
Submit Comment
Your Answer
2066221 tn?1331135817
Answer
Know how to answer? Tap here to leave your answer...
Answer
Submit Answer
A
A
Top Arrhythmias Answerers
612551 tn?1450025775
Blank
1807132 tn?1318747197
Blank
Chicago, IL
995271 tn?1463927859
Blank
PA
12492606 tn?1459877633
Blank
Avatar universal
Blank
11548417 tn?1440481484
Blank
Netherlands
Recent Activity
Avatar universal
Blank
Joel78 is frustrated, aching, tire... Comment
May 26
463897 tn?1448485050
Blank
MH Community Mgr commented on photo
May 25
Avatar universal
Blank
Joel78 commented on Jzabs's status
May 25
Heart Rhythm Community Resources