Sinus tachycardia of the heart at rest, why does this happen?

Tachycardia. Sinus tachycardia at rest can have many causes including deconditioning, anemia, hyperthyroid, fever, infection, trauma, anxiety, drugs, smoking, pots, tachy/brady syndrome, arrhythmic sinus tachycardia, and more...
Some ideas. Pain or anxiety can cause mild tachycardia near 100. Possible hidden causes are anemia & overactive thyroid which are detected by blood tests. Sounds like your doctor already did an ekg, which would rule out an abnormal heart rhythm if its really >100. Heart & lung conditions (with low oxygen) can cause sinus tachycardia too but you probably would have other symptoms like short breath. Good luck.

Related Questions

My resting heart beat is over 90+ at least to 120. What does this mean? Could it be more then sinus tachycardia?

Tachycardia. Seems that you have innapropriate sinus tachycardia. You should have a cardiologist look into that. Read more...
Without more. Information it's difficult to arrive to a recommendation or a conclusion. It could be a heart arrhythmia, could be simply you are out of conditioning, but also could be a condition like hyperthyroidism. An ekg and a good history and physical needed asap. Read more...

Can a heart rate of 160 while resting be simple sinus tachycardia or is is usually SVT?

Depends. At your age it could be either. I have seen both. If you are at rest, calm and comfortable and it continues to stay at 160, might be SVT. Read more...

I am taking bisoprolol 5 mg for inappropriate sinus tachycardia but my heart rate still going up to 130 bpm at rest how is this possible?

PALPITATIONS W/U. YOU MAY NEED TO INCREASE THE DOSE: you need exam/labs especially TFTS/EKG/Event Monitor/ECHO andThe discussion of treatment options with your doctor. While you are waiting eliminate caffeine focus on staying hydrated. If palpitations worsen or syncope develops go directly to the ER stick to a GF diet WholeApproach.com gutbliss.com . Read more...
Insuff data. Bisoprolol a very powerful B-Blocker. 5mgs as strong as 150mgs of Metoprolol Succinate or 50mgs ot Atenolol. Small doses of B-Blocker help in Sinus Tachycardia, but UR arrhythmia may be SVT, a different mechanism. U must see a cardiologist & get a Holter monitor. U may need to see an EP Cardiologist. Bisoprolol a BP med too, Is UR BP so low that U R activating outpour of adrenalin? See card ASAP. Read more...

Can Sinus Tachycardia cause pvc and/or other form of arhytmia? If heart is normal and all tests ok (didnt do holter but rest yes) can it be dangerous?

Sinus tachy. sinus tachycardia does not lead to PVC or other unusual arrhythmias. However sinus tachycardia, although most of the time healthy response, sometimes there are reasons to have inappropriate sinus tachycardia or other causes such as hyperthyroidism or anemia. If sinus tachycardia is the dominant rhythm during day time, it needs evaluation by an electrophysiologist. Read more...

I have inappropriate sinus tachycardia I'm on no medication and resting heart rate above 100 and slight movement to over 130 will it cause damage?

Needs investigation. Avoid all caffeine, see your physician to determine the exact rhythm. While some people can have sinus tachycardia, some may have supraventricular tachycardia and treatments will differ depending on the cause and underlying rhythm. Read more...

How can heart rate go for it to be considered not sinus tachycardia?

FasterPussycatKill!! There are numbers published for this.Like anything over 100 beats per minute is considered tachycardia and anything over 120 serious and 150 very serious. But that's Bell Curve statistics. It also depends on the specific situation. Some people are very comfortable and OK with a pulse of 110,some at 40.Also,if you are exercising you can get sinus tachycardic up to 240!So more info is really needed. Read more...
Two different issues. (1) Tachycardia: defined as any heart rate above 100 BPM, regardless of rhythm. (2) Sinus refers to the heart muscle cells presumably initiating each heart contraction, i.e. the rhythm (each contraction) is starting within the sinus node (thus sinus rhythm), not some other portion of the atria [ectopic atrial beat/rhythm], AV node [nodal beat(s)/rhythm] or ventricle [ventricular beat(s)/rhythm]. Read more...
Above 100. Sinus tachycardia is heart rhythm originating from the sinoatrial node , defined as a rate greater than 100 beats/min in an average adult. The normal resting heart rate in the average adult ranges from 60–100 beats/min. In some individuals can go up to 130 beats/min. Supraventricular tachycardia at least 100 beats a minute and may reach 300 beats a minute. ECG usually helps differentiate. Read more...