How are clinical meaning and electric chart of heart of the block of sinus room now? 's general knowledge

How are clinical meaning and electric chart of heart of the block of sinus room now? 's general knowledge
Sinus the intersection of room and block can be seen disease, fan absent-minded to get, stimulate and the intersection of sinus and room form pathological change,etc. on healthy people, foreign the intersection of digitalis and poison, hyperkalemia, also can be seen at organic heart disease such as coronary heart disease, myocardium infarction, essential hypertension and myocarditis,etc.. The lighter can have clinical symptom, and a disconnected one getting complete the intersection of sinus and room block, can cause fainting and syndrome of Sri Lankan of A.
The electric chart of heart appears:
1.The sinus room spreads and seeks blocking for a time: Because the sinus room marry the electric potential, change very much little, unable from the body surface electrocardiogram and sinus rhythm of the heart is distinguished.
2.The block of sinus room of two degrees of Model I:
Issue from long to shorten gradually and then loss one, continue finally - one under pieces of P-P unusually lengthened among the P-P.
One is shorter than two sinus excited cycles among this P-P.
P-P interval before the long intermittence is the shortest, any P-P interval before the first P-P interval after the intermittence is longer than the intermittence.
3.The block of sinus room of two degrees of Model II:
The long P-P intermittence appeared in sinus rhythm of the heart suddenly.
This long intermittence is just the sinus whole multiple of cardiac cycle.
4.The block of three degrees of sinuses room: Namely sinus room form, at all can't reach atrium outside while being excited, park, fight, distinguish difficult with sinus at the intersection of body surface and electrocardiogram.
|