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ECG Rules:)

QuestionAnswer
Sinus Rhythm Rate 60-100 BPM
Sinus Rhythm Rhythm Regular
Sinus Rhythm Pwaves (+),One For Every QRS
Sinus Rhythm PRI 0.12-0.20 sec
Sinus Rhythm QRS 0.10 sec or less, unless abnormally conducted
Sinus Bradycardia Rate Less Than 60 BPM
Sinus Bradycardia Rhythm Regular
Sinus Bradycardia Pwaves (+),One For Every QRS
Sinus Bradycardia PRI 0.12-0.20 sec
Sinus Bradycardia QRS 0.10 sec or less, unless abnormally conducted
Sinus Tachycardia Rate 101-180 BPM
Sinus Tachycardia Rhythm Regular
Sinus Tachycardia Pwaves (+),One For Every QRS
Sinus Tachycardia PRI 0.12-0.20 sec
Sinus Tachycardia QRS 0.10 sec or less, unless abnormally conducted
Sinus Arrhythmia Rate Usually 60-100 BPM
Sinus Arrhythmia Rhythm Irregular, Typically Phasic with Respirations
Sinus Arrhythmia Pwaves (+),One For Every QRS
Sinus Arrhythmia PRI 0.12-0.20 sec
Sinus Arrhythmia QRS 0.10 sec or less, unless abnormally conducted
SA Block Rate Varies
SA Block Rhythm Regular Except For The Event; Drops A P-P Interval
SA Block Pwaves When Present,(+),One For Every QRS
SA Block PRI When Present,0.12-0.20 sec
SA Block QRS 0.10 sec or less, unless abnormally Conducted
Sinus Arrest Rate Varies
Sinus Arrest Rhythm Regular Except For The Event; Pause Of Undetermined Length
Sinus Arrest Pwaves When Present,(+),One For Every QRS
Sinus Arrest PRI When Present, 0.12-0.20 sec
Sinus Arrest QRS 0.10 sec or less, unless abnormally Conducted
PACs Rate Usually Within Normal Range, But Depends On Underlying Rhythm
PACs Rhythm Regular With Premature Beats
PACs Pwaves Premature,(+), One For Every QRS, Differ Than Sinus Pwaves, Maybe Lost In Preceding Twave
PACs PRI Maybe Normal Or Prolonged
PACs QRS 0.10 sec or Less Unless Abnormally Conducted
Wandering Atrial Pacemaker Rate Usually 60-100 BPM; If Rate Greater Than 100 BPM, Rhythm Is Called Multifocal Atrial Tachycardia
Wandering Atrial Pacemaker Rhythm Maybe Irregular As Pacemaker Site Shifts From SA Node To Ectopic Atrial Locations And AV Junction
Wandering Atrial Pacemaker Pwaves Size, Shape, And Direction mau Change From Beat To Beat
Wandering Atrial Pacemaker PRI Varies
Wandering Atrial Pacemaker QRS 0.10 sec Or Less Unless Abnormally Conducted
Atrial Tachycardia Rate 100-250 BPM
Atrial Tachycardia Rhythm Regular
Atrial Tachycardia Pwaves Atrial Pwaves Differ From Sinus Pwaves; Isoelectric Baseline Usually Present Between Pwaves
Atrial Tachycardia PRI Maybe Shorter Or Longer Than Normal
Atrial Tachycardia QRS 0.10 Sec Or Less Unless Abnormally Conducted
AVNRT Rate 150-250 BPM
AVNRT Rhythm Ventricular Rhythm Is Usually Very Regular
AVNRT Pwaves Pwaves Often Hidden In QRS Complex
AVNRT PRI If Pwaves Are Seen, The PRI Will Usually 0.12-0.20sec
AVNRT QRS 0.10 sec or Less Unless Abnormally Conducted
Atria Flutter Rate Atrial Rate 250-450BPM, Typically 300BPM, Ventricular Rate Variable-Determined By AV Blockade
Atria Flutter Rhythm Atrial Regular, Ventricular Regular or irregular
Atria Flutter Pwaves No Identifiable P Waves; Saw-toothed "flutter" Waves Present
Atria Flutter PRI Not Measurable
Atria Flutter QRS 0.10 sec or less unless abnormally Conducted
AFib Rate Atrial Rate 400-600 BPM; Ventricular Rate Variable
AFib Rhythm Ventricular Rhythm Usually Irregularly Irregular
AFib Pwaves No Identifiable Pwaves; Fibrillatory waves present; erratic, Wavy Baseline
AFib PRI Not measurable
AFib QRS 0.10 sec or less unless abnormally conducted
WPW Rate 60-100 BPM, if the underlying rhythm is sinus in origin
WPW Rhythm Regular, unless associated with Atrial Fibrillation
WPW Pwaves Normal and (+) in lead II unless WPW is associated with AFib
WPW PRI If Pwaves are seen, Less than 0.12sec
WPW QRS Usually greather than 0.12 sec. Delta wave may be seen in one or more leads
PJCs Rate usually within normal range, but depends on underlying rhythm
PJCs Rhythm Regular with premature beats
PJCs Pwaves may occur before, during, or after QRS, if visiable, the Pwave is Inverted in leads II, III, and aVF
PJCS PRI If Pwave occurs before the QRS, the PRI will usually be 0.12 sec or less; if no p wave occurs before The QRS, there will be no PRI
PJCs QRS Usually 0.10sec or less unless it is aberrantly conducted or an intraventricular conduction delay exists
Junctional Escape Beat Rate usually within normal range, but depends on underlying rhythm
Junctional Escape Beat Rhythm Regular with Late Beats
Junctional Escape Beat Pwaves may occur before, during, or after QRS, if visiable, the Pwave is Inverted in leads II, III, and aVF
Junctional Escape Beat PRI If Pwave occurs before the QRS, the PRI will usually be 0.12 sec or less; if no p wave occurs before The QRS, there will be no PRI
Junctional Escape Beat QRS Usually 0.10sec or less unless it is aberrantly conducted or an Intraventricular conduction delay exists
Junctional Escape Rhythm Rate 40-60 BPM
Junctional Escape Rhythm Rhythm Regular
Junctional Escape Rhythm Pwaves may occur before, during, or after QRS, if visiable, the Pwave is Inverted in leads II, III, and aVF
Junctional Escape Rhythm PRI If Pwave occurs before the QRS, the PRI will usually be 0.12 sec or less; if no p wave occurs before The QRS, there will be no PRI
Junctional Escape Rhythm QRS Usually 0.10 sec or less unless it is aberrantly conducted or an Intraventricular conduction delay exists
Accelerated Junctional Rhythm Rate 61-100 BPM
Accelerated Junctional Rhythm Rhythm Regular
Accelerated Junctional Rhythm Pwaves may occur before, during, or after QRS, if visiable, the Pwave is Inverted in leads II, III, and aVF
Accelerated Junctional Rhythm PRI If Pwave occurs before the QRS, the PRI will usually be 0.12 sec or less; if no p wave occurs before The QRS, there will be no PRI
Accelerated Junctional Rhythm QRS Usually 0.10sec or less unless it is aberrantly conducted or an Intraventricular conduction delay exists
Junctional Tachycardia Rate 101-180 BPM
Junctional Tachycardia Rhythm Regular
Junctional Tachycardia Pwaves may occur before, during, or after QRS, if visiable, the Pwave is Inverted in leads II, III, and aVF
Junctional Tachycardia PRI If Pwave occurs before the QRS, the PRI will usually be 0.12 sec or less; if no p wave occurs before The QRS, there will be no PRI
Junctional Tachycardia QRS Usually 0.10sec or less unless it is aberrantly conducted or an Intraventricular conduction delay exists
PVCs Rate= Usually within normal range, but depends on underlying rhythm
PVCs Rhythms= regular with early beats
PVCs Pwaves= usually absent or, with retrograde conduction to the atria, may appears after the QRS(usually upright in ST-segment or Twaves)
PVCs PRI= none
PVCs QRS= usually 0.12 sec or greater
Ventricular Escape Beat Rate Usually within normal range, but depends on underlying rhythm
Ventricular Escape Beat Rhythm usually 0.12 sec or greater
Ventricular Escape Beat Pwaves usually absent or, with retrograde conduction to the atria, may appears after the QRS(usually upright in ST-segment or Twaves)
Ventricular Escape Beat PRI none
Ventricular Escape Beat QRS usually 0.12 sec or greater
IVR Rate 20-40 BPM
IVR Rhythm Essentially Regular
IVR Pwaves usually absent or, with retrograde conduction to the atria, may appears after the QRS(usually upright in ST-segment or Twaves)
IVR PRI none
IVR QRS usually 0.12 sec or greater
AVR Rate 41-100 BPM (Some Consider the rate 41-120 BPM)
AVR Rhythm Essentially Regular
AVR Pwaves usually absent or, with retrograde conduction to the atria, may appears after the QRS(usually upright in ST-segment or Twaves)
AVR PRI none
AVR QRS usually 0.12 sec or greater
Monomorphic VT Rate 101-250 BPM (some Consider 121-250 BPM)
Monomorphic VT Rhythm Usually Regular
Monomorphic VT Pwaves May be present or absent. If present, they have no set relationship to the QRS appearing between the QRSs at a rate different from that of the VT
Monomorphic VT PRI None
Monomorphic VT QRS 0.12 sec or greater
Polymorphic VT Rate 150-300 BPM
Polymorphic VT Rhythm Irregular
Polymorphic VT Pwaves Inderpendent or none
Polymorphic VT PRI none
Polymorphic VT QRS 0.12 sec or greater
VFib Rate not discernible
VFib Rhythm chaotic
VFib Pwaves absent
VFib PRI none
VFib QRS not discernible
Asystole Rate none
Asystole Rhythm none
Asystole Pwaves atrial activiy may be observed ('Pwaves asystole")
Asystole PRI none
Asystole QRS absent
1sr-Degree AVB Rate usually within normal range, but depends on underlying rhythm
1st-Degree AVB Rhythm atrial regular, ventricular regular
1st-Degree AVB Pwaves normal, one for every QRS
1st-Degree AVB PRI Greater than 0.20 sec and constant
1st-Degree AVB QRS usually 0.10 sec or less unless an intraventricular conduction delay exists
2nd-Degree AVB Type I Rate atrial rate greater than ventricular rate; both often within normal limits
2nd-Degree AVB Type I Rhythm atrial regular, ventricular irregular
2nd-Degree AVB Type I Pwaves normal in size and shape, some pwaves are not followed by a QRS (more Pwaves Than QRS)
2nd-Degree AVB Type I PRI lengthens with each cycle until a pwave appears without a QRS
2nd-Degree AVB Type I QRS usually 0.10 sec or less unless an intraventricular conduction delay exists
2nd-Degree AVB Type II Rate atrial rate greater than ventricular rate; ventricular rate often slow
2nd-Degree AVB Type II Rhythm atrial regular, ventricular often slow
2nd-Degree AVB Type II Pwaves normal in size and shape, some pwaves are not followed by a QRS (more Pwaves Than QRS)
2nd-Degree AVB Type II PRI normal or slightly prolonged but constand for conducted beats
2nd-Degree AVB Type II QRS usually greater than 0.10 sec, periodically absent after pwaves
2nd-Degree AVB 2:1 Rate atial rate greater than ventricular
2nd-Degree AVB 2:1 Rhythm atrial regular, ventricular regular
2nd-Degree AVB 2:1 Pwaves normal in size and shape, some pwaves are not followed by a QRS (more Pwaves Than QRS)
2nd-Degree AVB 2:1 PRI normal in size and shape, every other pwave is not followed by a QRS (More Pwaves Than QRS)
2nd-Degree AVB 2:1 QRS constant
3rd-Degree AVB Rate atrial rate greater than ventricular rate; ventricular rate determined by origin of escape thythm
3rd-Degree AVB Rhythm atrial regular, ventricular regular
3rd-Degree AVB Pwaves normal in size and shape, some pwaves are not followed by a QRS (more Pwaves Than QRS)
3rd-Degree AVB PRI none- the atria and ventricular beat independently of eavh other. therefor no true PRI
3rd-Degree AVB QRS Narrow or wide depending on the location of escape pacemaker and condition of intraventricular conduction system
Created by: Tabitha_Renea