Normal Sinus Rhythm
Rate-- 60-100 bpmRhythm-- R-R intervals are constant; rhythm regularP Wave-- Uniform & 1 for each QRSPRI-- 0.12-0.20 sec & constantQRS-- < 0.12 sec
Sinus BradycardiaRate-- < 60 bpm Rhythm-- R-R intervals constant & rhythm regP Wave-- Uniform & 1 for each QRSPRI-- 0.12-0.20 sec & constantQRS-- < 0.12 sec
Sinus Tachycardia
Rate-- 100-160 bpm Rhythm-- R-R intervals constant & rhythm regP Wave-- Uniform & 1 for every QRSPRI-- 0.12-0.20 sec & constantQRS-- < 0.12
Sinus Arrhythmia
Rate-- 60-100 bpm but can be slowerRhythm-- R-R interval varies & rhythm is slightly irrP Wave-- Uniform & 1 for every QRSPRI-- 0.12-0.20 sec & constantQRS-- <0.12 sec
Wandering Atrial Pacemaker
Rate-- 60-100 bpm but can be slowerRhythm-- slightly irrP Wave-- 1 P for every QRS but may tough to see depending on pacemaker sitePRI-- 0.12-0.20 sec. Some PRI may be < 0.12QRS-- < 0.12 sec
Premature Atrial Contraction (PAC)
Rate-- Depends on underlying rhythmRhythm-- single ectopic beat will effect regularity of underlying rhythmP Wave-- P wave of premature beat differs fr morphology of P Waves of underlying rhythm. Ectopic beat will have a P wave but it can be unusual - Can be notched, flattened or buried in the preceding T wavePRI-- 0.12-0.20 but can be prolonged. PRI of ectopic beat probably different than that of underlying rhythmQRS-- < 0.12 sec
Atrial Tachycardia (rapid A Fib)
Rate-- 150-250 bpm Rhythm-- R-R interval constant & rhythm regP Waves-- 1 for every QRS. P's may be hidden in T's.PRI- 0.12-0.20 sec & constant. P may be difficult to measure if hidden in T's.QRS-- < 0.12 sec
Atrial Flutter
Rate-- Atrial rate 250-350, Ventricular rate variesRhythm-- Atrial is regular. Ventricular can be reg or IRP Wave-- P replaced by "f" waves in a saw tooth patternPRI-- Not measurable QRS-- < 0.12 sec-
Atrial Fibrillation (A Tach)
Rate-- Atrial = 350-400 Ventricular = VariableRhythm-- IR-IRP Waves-- Ps replaced by "f" wavesPRI-- Not discernableQRS-- Usually < 0.12 sec
PVC
Rate-- Depends on underlying rhythmRhythm-- Can be R or IRP Waves-- W/underlying rhythm onlyPRI-- None w/PVC. Underlying rhythm yesQRS-- PVC > or equal to 0.12; usually wide & bizarre
SVT
Rate--Atrial & vent = 150-250Rhythm-- RP Waves-- Usually not discernablePRI-- Usually not discernableQRS-- < 0.12
V Tach
Rate-- 150-250 bpmRhythm-- Atrial not discernible, Ventricular is RP Waves-- May or may not be present & not associated w/QRSPRI-- NoneQRS-- Bizarre morphology > 0.12
V-Fib
Rate-- Not discernibleRhythm-- Not discernibleP Waves-- NonePRI-- None QRS-- None
2nd Degree AV Block (Mobitz II)
Rate-- Atrial R; Ventricular BradyRhythm-- Atrial R; Ventricular IRP Waves-- More Ps than QRS'sPRI-- Normal then QRS drops a beatQRS-- < 0.12
3rd Degree AV Block (complete)
Rate-- 60-100 bpmRhythm-- RP Waves-- Present but no relation to QRSPRI-- VariableQRS-- Normal
1st Degree Block
Rate-- Based on underlying rhythmRhythm-- RP Waves-- NormalPRI-- > 0.20QRS-- < 0.12
Junctional
Rate-- 40-60 bpmRhythm-- RP Waves-- May be inverted, missing, b/f, aft or lost in QRSPRI-- None QRS-- Normal
Accelerated Junctional
Rate-- 60-100Rhythm-- RP Wave-- May be inverted, missing, b/f, aft or lost in QRSPRI-- NoneQRS-- Normal
Junctional Tach
Rate-- 100-180 bpmRhythm-- RP Wave-- May be inverted, missing, b/f, aft or lost in QRSPRI-- NoneQRS-- Normal
2nd Degree Type I (Wenckebach)
Rate-- Atrial = Normal ; Ventricular = Slower than atrialRhythm-- R-IRP Waves-- PresentPRI-- Variable (longer, longer, longer, gone)QRS-- Normal
Ventricular Escape (Agonal)
Rate-- Depends on underlying rhythmRhythm-- IRP Waves-- Not present b/f PVCPRI-- NoneQRS-- Widened, > 0.12 sec
Idioventricular
Rate-- 20-40 bpmRhythm-- RegP Waves-- NonePRI-- NoneQRS-- Wide > 0.12 sec