1 Big Box - 0.20 sec
1 Small Box - 0.04 sec
1st Degree AV Block - Regular
Rate: 60-100
P Wave: Present, upright
PR interval: >0.20 sec CONSISTENTLY LONG
QRS: <0.12 sec
Husband stays late till 9 consistently
2nd Degree AV Block Type I Mobitz, Wenckebach - IRREGULAR
Rate: 60-100
P wave: Present, upright
PR Interval: Progressively longer until drop (PR interval longer and longer until drop)
QRS: <0.12 sec
Husband stays late till 9, then 11, then 1, then doesn't come home at all
2nd Degree AV Block Type II - Irregular or regular
Rate: <60
P wave: Present, upright
PR Interval: PR interval consistently LONGER like type 1 but then a QRS will drop
QRS: <0.12 sec
Husband stays late till 9 consistently, then wife goes out and doesn't come home
3rd Degree AV Block - Atrials and ventricles don't communicate
Rate: regular atrial
P wave: Present, upright
No relationship between P waves and QRS
PR Interval: VARIABLE
QRS: variable
P-P ad R-R consistent but NO correlation
Husband and wife live separate lives and don't communicate
A fib RVR - IRREGULAR
Ventricular rate: 100-175
P wave: unable to see
PR Interval: N/A
, QRS <0.12 sec
Accelerated Idoventricular Rhythm - Regular
Rate: 50-100
P wave: NONE
PR Interval: N/A
QRS: WIDE, >0.12 sec
Accelerated Junctional Rhythm - Regular
Rate: 60-100
P Wave: NONE or INVERTED
PR Interval: None or <0.12
QRS: <0.12 sec
Atrial Fibrillation - IRREGULAR
Atrial rate: UNMEASURABLE
Ventricular rate: variable
P wave: unable to see
PR Interval: N/A
QRS: <0.12 sec
Atrial Flutter - Usually REGULAR can be irregular
Atrial rate: 250-350
Ventricular rate: variable BUT < atrial rate
P Wave: Flutter
PR Interval: N/A
QRS: <0.12 sec
Atrially Paced - Spike comes before P
AV Node - 2nd
40-60
AV Node Firing, SA Node Failed Rhythms - *Fires normally @ 40-60*
-Junctional rhythm 40-60
-Accelerated junctional rhythm 60-100
-Junctional tachycardia 100-150
AV Paced - Spike before P and before QR
Bigeminy - PVC occurs every OTHER beat
Bundle of His - 3rd
40-45
Calculate Irregular Rate - # of Rs in 6 sec strip X 10