II. DIAGNOSTIC TEST RESULTS
His bundle study
III. LAB FINDINGS:
Disorder of impulse formation.
b) Triggered Activity.
1) Early after depolarization.
2) Delayed after depolarization.
Disorder of impulse conduction.
Block – Reentry.
i) paroxysmal- self terminating
episodes upto 7 days
ii) persistent -non self terminating
more than 7 days
iii) permanent - not responding to
iv) recurrent: returning after once
Strategies of Antidysrhythmic
A. Alter automaticity
i. decrease slope of Phase 4 depolarization
ii. increase the threshold potential
iii. decrease resting (maximum diastolic) potential
B. Alter conduction velocity
i. mainly via decrease rate of rise of Phase 0
ii. decrease Phase 4 slope
iii. decrease membrane resting potential and
C. Alter the refractory period
i. increase Phase 2 plateau
ii. increase Phase 3 repolarization
iii. increase action