What does returning arrhythmia of sinus room produce the mechanism? 's general knowledge

What does returning arrhythmia of sinus room produce the mechanism? 's general knowledge
Producing the returning arrhythmia of sinus room must possess 4 following primary conditions: Sinus it is effective to answer issue to be relatively long for room to form, exceed around the intersection of atrium and skin answer one. If the atrium skin has not answered one has exceeded the sinus room to form too effective to answer one, will stop or conceal the juncture district of sinus room and return the phenomenon. Sinus the intersection of room and the intersection of juncture and district answer relatively issue relatively long, excited to conduct speed to be slow, thus guarantee the skin of atrium around have the recovery time long enough, could keep the excitement again of next time. On the annular route in the juncture district of sinus room, can there is one defying space areas in the excited the front, once the intersection of space and district disappear, excited to return the phenomenon, terminate immediately. Sinus room return phenomenon, fight, cause early by in right time room. Or room that take place late fight, can't cause the intersection of sinus and the intersection of room and juncture district return early. Cause the juncture district of sinus room to return and form matching and taking to the echo when sinus echo. Human sinus echo bring more among 10- 170ms. The pathological change person of juncture district of sinus room, the echo tape can reach 350ms to increase widely. Have, drive in the wrong direction juncture that atrium conduct fight early and room fight, can also cause the intersection of sinus and the intersection of room and juncture district roll over the arrhythmia early. But the excitement of driving in the wrong direction and conducting under most situations reaches the juncture zone time of sinus room, the echo is brought over. So it can cause the sinus echo and sinus room returning tachycardia of juncture district to fight and little early in the juncture.
In right time room fight excited to drive in the wrong direction, conduct, enter the intersection of sinus and the intersection of room and the intersection of juncture and district, return in the cycle early, return, conduct slowly, namely excited to drive in the wrong direction, introduce the sinus room to, marry along a route, return atrium by another route, finish 1 the intersection of sinus and the intersection of room and juncture district return, produce the sinus echo. Return fast continuously, produce returning tachycardia of juncture district of sinus room. Sinus room excited to return in the intersection of sinus and the intersection of room and the intersection of juncture and district, produce the intersection of sinus and the intersection of room and juncture nature fight early.
|