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EKG Class

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dinosaur1234's version from 2016-07-16 15:54

EKG Class

Question Answer
NSRrate 60-100, regular rhythm, Ps 1:1 and similiar, PR interval 0.12-0.2, QRS <0.12
Sinus bradyrate <60, regular rhythm, Ps 1:1 and similiar, PR interval 0.12-0.2, QRS <0.12
Sinus tachyrate >100, regular rhythm, Ps 1:1 and similiar, PR interval 0.12-0.2, QRS <0.12
Sinus arrestvariable rate, causes irregularity
Sinus arrhythmiarate 60-100, irregular rhythm, Ps 1:1 and similiar, PR interval 0.12-0.2, QRS <0.12
Wandering pacemakerrate 60-100, regular or slightly irregular rhythm, 3 or more different looking P waves, PR interval with slight variation but within .12-.2, QRS <.12
Supraventricular tachycardia (SVT)rate 150s-250s, regular rhythm, Ps are hidden, PR unmeasurable, QRS <.12
Atrial fluttervariable rate, regular or irregular; looks like a saw tooth
Atrial fibrillationirregularly irregular; no identifiable P waves; wavy isoelectric line; QRS <.12
Junctional rhythm (junctional escape)rate 40-60, regular rhythm, Ps inverted or absent, PR interval typically short (<0.12) if present, QRS <0.12
Accelerated junctional rhythmrate 60-100, regular rhythm, Ps inverted or absent, PR interval typically short (<0.12) if present, QRS <0.12
Junctional tachycardiarate 100-150, regular rhythm, Ps inverted or absent, PR interval typically short (<0.12) if present, QRS <0.12
Ventricular tachycardia (V tach)rate >100, regular rhythm, Ps not seen, PR interval not seen, QRS >.12
Ventricular fibrillationwavy/scratchy baseline; can’t determine anything else
Idioventricular rhythm (aka ventricular escape)rate 20-40, regular rhythm, no Ps, no PR interval, QRS >0.12
Accelerate idioventricularrate 40-100, regular rhythm, no Ps, no PR interval, QRS >0.12
Asystolerate 0; basically just little blurts on isoelectric line
PEAelectrical activity on the monitor, but NO PULSE
PAC (premature atrial contraction)Ps upright/round/1:1, have an early atrial beat, PR .12-.2, QRS <.12
Non-conducted PACearly atrial beat; Ps upright and round; no QRS produced
PJC (premature junctional contraction)hard to diagnose in real life; early AV node beat; P wave will be inverted or absent, QRS <0.12
PVC (premature ventricular contraction)early ventricle beat; no Ps, no PR interval, QRS >0.12
1st degree blockrate depends on underlying rhythm; rhythm regular; Ps 1 to 1, upright, normal; PR >0.2!!!!!!; QRS narrow
2nd degree block type 1 (aka Mobitz 1, aka Wackenbach)irregular rhythm due to dropped QRS complexes; more Ps then QRS; PRI progressively gets longer until it gets dropped; QRS <0.12
2nd degree block type 2 (aka Mobitz 2)vent rate may be slow; may be regular or irrregular; more Ps than QRS; PRI FIXED/CONSTANT; QRS <0.12 (think of this as the husband doesn't always come home, but when he does it is always at the same time)
3rd degree block (aka complete block)Ps do NOT cause QRS, they function independent of each other; P to P regular and R to R regular; all PRIs are different; QRS can be narrow or wide
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Tricks and tips

Question Answer
P waves in junctional (AV) rhythmsp waves will be inverted or absent!! Rhythm is always regular!!
Ventricular arrhythmias tipslook at the QRS!! Will be >0.12
QRS representsdepolarization of the ventricles
Normal QRS<0.12
P wave representsatrial depolarization
PR interval representsthe length of time for the impulse to pass from the SA node through the AV node
Normal PR interval0.12-0.2
T wave representsthe recovery phase or repolarization of the ventricles
Electrodes in lead 2negative electrode is connected to the right are, and the positive electrode is connected to the left lower lead
Possible cause of sinus tachypain or anxiety
Possible cuase of sinus brady vagal stimulation
Possible cause of sinus arrhythmiarespirations
Primary pacemake of the heartSA node
SA node rate60-100
AV node rate40-60
Purkinje fibers rate20-40
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