There are several kinds of types in all in the block of sinus room what is its characteristic of electrocardiogram? 's symptom

There are several kinds of types in all in the block of sinus room, what is its characteristic of electrocardiogram? 's symptom
The block of sinus room is divided into three degrees according to the intensity that it blocks like block of the other positions.
(1)The sinus room is blocked for a time Mean the sinus is excited in the course of conducting, just conduct time to lengthen, all sinus rooms are excited can spread into the atrium, however, the sinus room can't show to form the excited course in the body surface electrocardiogram, can only be according to the excitement of the atrium (P wave) Reflect the activity of the sinus room knot indirectly, so, the sinus room is blocked with the normal unable difference of electrocardiogram for a time.
(2)Two degrees of sinuses room is blocked Two degree sinus be blocked to last two kinds of types room,namely type (Wen) And 2 type. Type (Wen type) : Two the intersection of sinus and room block, form, conduct, hinder knit by the intersection of sinus and room issue take place whom pathology nature extension lead to the fact as to answer issue and answer absolutely, shown as the sinus is excited in conducting the course of the sinus room, conduct the going on retardance of speed, until totally block and can't spread into the atrium. The characteristic of its electrocardiogram is as follows: a: Issues of person who go on shorten among the P-P, until the fact that one the intersection of P and wave loss . b: One is smaller than twice of one among the shortest P-P among the longest P-P. c: P-P interval before the long P-P intermittence is the shortest, it is (in fact still slightly longer than the normal sinus sexual cycle or is equal to) to close to the normal sinus sexual cycle . One among any P-P before the issue is longer than the intermittence among first P-P after the intermittence. 2Type: Two the intersection of sinus and room block, conduct by the intersection of sinus and room organize answer absolutely a pathology nature extension cause, with a excited leave and spreading for several times, do not answer absolutely one is lengthened gradually, when lengthening to certain extent, an QRS unexpected turn of takes place to come off, its property is similar to complete atrio-ventricular block, just different on the intensity. It is very apt to transform into complete atrio-ventricular block but should notice 2 type two degrees of sinuses room blocking, should bring height's attention. The electrocardiogram of the block of sinus room of two degrees of Model 2 of has the following several respect to change the characteristic: a.At the time of sinus rhythm of the heart, interim among basically even and neat P-P, an intermittence appeared suddenly. b.One among long P-P is just in fact whole multiple of one among sinus rhythm of the heart P-P.
(3)Three degrees of sinuses room is blocked Three the intersection of sinus and room block, mean all excitement can introduce the atrium to, avoid the intersection of P and wave in the electrocardiogram, it is difficult to be resting with the sinus to distinguish, unable to make diagnosis. These can only form electric directness of picture, copy, write, diagnose through the intersection of sinus and room. So just think some the intersection of sinus and room form excited to spread into atrium, produce the intersection of P and wave, some the intersection of sinus and room form, can introduce the atrium to while being excited, while avoiding P wave, namely could utilize the law that the electrocardiogram appear according to P wave when two degrees of sinuses room is blocked, suspect the existence blocked in sinus room.
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