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A comprehensive overview of ekg rhythms, including their characteristics, definitions, and key differences. It presents a series of questions and answers related to various ekg rhythms, covering topics such as normal sinus rhythm, sinus bradycardia, sinus tachycardia, atrial fibrillation, ventricular tachycardia, and more. Designed to help medical students understand and interpret ekg readings, enhancing their diagnostic skills.
Typology: Exams
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Normal sinus rhythm
Regular Rate: 60- 100 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec
Sinus Bradycardia
Regular Rate: < P Wave: Present, upright PR Interval: 0. 12 - 0.20 sec QRS: <0.12 sec
Sinus Tachycardia
Regular Rate: 100- 150 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec
Premature Atrial Contraction
IRREGULAR Rate: depends on underlying rhythm P wave: Present or hidden in T wave PR Interval: 0.12-0.20 sec QRS: <0.12 sec
Atrial Fibrillation
IRREGULAR Atrial rate: UNMEASURABLE
PR Interval: N/A QRS: <0.12 sec
Supraventricular Tachycardia
Regular Rate: 150- P wave: Hidden in QRS or T wave PR: unable to determine QRS: <0.12 sec
Junctional Rhythm
Regular Rate: 40- P Wave: ABSENT or INVERTED PR Interval: None or <0. QRS: <0.12 sec
Accelerated Junctional Rhythm
Regular Rate: 60- P Wave: NONE or INVERTED PR Interval: None or <0. QRS: <0.12 sec
Junctional Tachycardia
Regular Rate: > P Wave: NONE or INVERTED PR Interval: None or <0. QRS: <0.12 sec
Chaotic Coarse: big waves Fine: small waves Rate: unmeasurable P Wave: NONE PR Interval: N/A QRS: N/A
Idioventricular
Regular Rate: 20- P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec
Accelerated Idoventricular Rhythm
Regular Rate: 50- P wave: NONE PR Interval: N/A QRS: WIDE, >0.12 sec
1st Degree AV Block
Regular Rate: 60- 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
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
SA Node
1st 60-
AV Node
2nd 40-
Bundle of His
3rd 40-
Right and Left Bundle Branches
4th 40-
Purkinje Fibers
5th 20-
1 Small Box
0.04 sec
1 Big Box
0.20 sec
Junctional Rhythms
SA Node DID NOT FIRE AV Node fired NO P WAVE bc SA node didn't fire Narrow QRS
P Wave
Trigeminy
PVC occurs every THIRD beat
Couplet
2 PVCs together
Triplet
3 PVCs together
Multifocal
Multiple shapes
Monomorphic V Tach
Same Shapes V Tach
Polymorphic V Tach
Different Shapes V tach
Coarse V Fib
Chopy but not as high as polymorphic V tach
Fine V Fib
Fine and fibrillatory
Idioventricular Rhythms
Only purkinje fibers firing WIDE QRS always
Atrially Paced
Spike comes before P
Ventricularly Paced
Spike comes before QRS and QRS will be wide
AV Paced
Spike before P and before QR
Failure to Capture
