Sinus aroused in interest to accelerate to check symptom _ of symptom

Sinus aroused in interest to accelerate to check symptom, _ of symptom,
Diagnose:
1. P when break out P wave regular emergence tachycardia is exactly the same as P wave shape, time limit, amplitude of the normal sinus rhythm of the heart in shape in wave.
2. last 100 times P wave frequency /min,more at 130 times about min.
3. greater than issue among P-R 0.12s.
4. can shorten gradually, be slowed down gradually to be original and with time limit among P-P when be stopped issues of sinus tachycardia.
5.There is reason for causing tachycardia.
Check in the laboratory: There can be relevant laboratory that cause tachycardia to send disease originally and check the characteristic.
Other auxiliary examination:

1.The electrocardiogram characteristic of body surface:
(1)P wave: Sinus the intersection of P and wave when the tachycardia form, send out by room by sinus, P2 stand upright and PavR invert. P wave at the time of more normal sinus rhythm of the heart of P unexpected turn of at the time of sinus tachycardia is slightly tall in amplitude, more obvious in 2, lead and unite. This because of sinus when the tachycardia, excited to take place on the intersection of sinus and the intersection of room and head of the knot more, last positions initial of each this position,sinus excited more along before form under each spreading due to.
(2)One among P-R: In 0.12- 0.20s.
(3)One among P-P: Often influenced by autonomic nerve, there can be slight abnormality. But the difference answers among P-P 140 times min within a year old, 1- answer> 120 times min at 6 years old, the same as adult over 6, should be greater than 100 times min, does not usually exceed 160 times min. Specific infant and pre-school children's sinus tachycardia frequency can reach 230 times about min.
2.The characteristic that sinus tachycardia 24h dynamic electrocardiogram monitors:
(1) Sinus P wave frequency of passing sinus tachycardia: Accelerate slowing down gradually to be original and competent after lasting from several seconds to several minutes to 100 times above min gradually. P wave shape is the same as shape of the normal sinus P wave at the time of tachycardia.
(2)The total number of P waves that sinus tachycardia 24h dynamic electrocardiogram of the continuation records answers> 144,000 times.
(3)Other what 24h dynamic electrocardiogram records follows the situation at the time of sinus tachycardia: P wave amplitude becomes sharp or increases: Brief on excited to originate from the sinus room, marry the head. Section P-R is shifted down: This is caused by replying the influence of the wave very much by the atrium. There can be the one at various degrees then sending ST-T changes: Or original ST-T changes, returns to normal when sinus tachycardia takes place. One is shortened among Q-T. The reliance type arrhythmia of blocking of the quick heart rate, shrinking appears.
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