Dysrhythmia
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Dysrhythmia 1
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First Degree Atrioventricular Heart Block - prolonged PR interval-measures the time required for an impulse to travel from the SA to the AV node. PRI longer than 0.20 
 
Second degree AV block Type I - progressive prolongation of PRI, gradual shortening of R to R intervals 
 
P wave not followed by a QRS wave 
 
a pause with an R to R interval less than the sum of two P to P intervals 
 
first conducted atrial impulse after the pause shows a shorter or normal PRI 
 
Second Degree AV Block Ty...
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Dysrhythmia•Dysrhythmia
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MED SURG HESI EXAM /Nutrition and Diet Therapy/Epidemiology and Toxicology• By otebamanyuru
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First Degree Atrioventricular Heart Block - prolonged PR interval-measures the time required for an impulse to travel from the SA to the AV node. PRI longer than 0.20 
 
Second degree AV block Type I - progressive prolongation of PRI, gradual shortening of R to R intervals 
 
P wave not followed by a QRS wave 
 
a pause with an R to R interval less than the sum of two P to P intervals 
 
first conducted atrial impulse after the pause shows a shorter or normal PRI 
 
Second Degree AV Block Ty...