Sinus electrocardiogram characteristic _ general knowledge that accelerates aroused in interest

Sinus electrocardiogram characteristic _ general knowledge that accelerates aroused in interest
As a person is in physical exertion, excited state, or because cross and eat, smoking, drink, drink tea, drink coffee, shy, frighten, generate heat, anaemia, oxygen deficiency, infection, bleed, dehydration, influence in factors such as shock, hypotension, hyperthyroidism, acute myocardial infarction, pain or use atropine, Epinephrine, ephedrine in heart failure,etc., the sinus room will exceed every minute 100 times when forming the excited frequency sent out, this kind of arrhythmia is called sinus tachycardia, situation to physiological or pathology that it is obvious.
In daily life, we can say sinus tachycardia has taken place to everybody, so, sinus tachycardia is the most common arrhythmia. As a person has just finished moving vigorously once, this human heart may present sinus tachycardia, return to the normal state soon, does not need drug therapy. But if caused by some diseases sinus tachycardia should let the intersection of doctor and treatment.
The electrocardiogram characteristic of sinus tachycardia is as follows:
(1)P wave has characteristic of rhythm of the heart of sinus nature.
(2)One among P-R is among 0.12-0.20 seconds.
(3)Unless exceed 100 times heart rate divide, exceed 140 times divide within 1 year old,over 120 times 1-6 year old /divide,there are the same as adult on over 6. The adult can generally be up to it 150 times divide, P R slightly not but often neat lt; 0.12 seconds.
(4) Other changes that may appear.
P wave is high and sharp, lead and unite for being obvious with 2.
T-P merges, causes the false downward shift of section S-T.
S-T, T change.
With atrio-ventricular block.
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