26. Wolff-Parkinson-White Syndrome: Most common type of ventriuclar pre-exci- | | | | | | |
tationsydnrome.Abnormal fast accessory conductionpathway from atria tovenricle
| | | | | | | | | | |
bypasses the rate-slowing AV node causing a delta wave and widening QRS with
| | | | | | | | | | | | |
shortened PR interval.Could lead to a reentrant circuit and suprvaventicular tachy.
| | | | | | | | | | | |
27. First degree AV block: - PRI >5 boxes/.20 sec (200 msec)
| | | | | | | | | |
- Fixed but prolonged PRI | | |
(consistent but long)
| | |
- normally get bradycardia here | | |
28. second degree AV block mobitz type 2: -PR interval is constant | | | | | | | | | |
-atrial conduction to ventricle is intermittent: dropped QRS without increasing PR
| | | | | | | | | |
interval length
| |
-disease below AV node in His bundle | | | | | |
3 |/ |27
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