Rhthym Recogn Flashcards
REG
Normal P wave
PR interval > 0.2 secs
QRS normal
1st Degree heart block
REG. IRR
P wave present
P: QRS variable
2nd Degree type 1
REG. IRR
P wave regular
PR Interval stays the same
QRS RATIO : variable 3:2, 4:3, etc
2nd Degree type 2
P waves and QRS both present but dissociated from each other
Reg but P and QRS rate different.
QRS wide or normal
3rd degree heart block
Indeterminate rate
Chaotic rhythm
Ventricular fibrillation
Rate 100 +
Reg
Wide & bizarre
Ventricular tachycardia
Peri-arrest (PEA)
Heart rate <20
No P wave
Wide, bizarre QRS, originating in ventricles
Agonal Rhythm
Rate 40-100
Reg
No P wave
Wide QRS
Accelerated idioventricular rhythm
Rate 20-40
Reg
No P wave
Wide QRS
Idioventricular rhythm
Irregular
No P wave
QRS: wide - bizarre
Premature ventricular contraction
Reg
P wave - none, Nategrade or retrograde
Junctional rhythm
IRR, IRR
P waves: none, chaotic, atrial activity
Atrial fibrillation
Saw tooth pattern
Usually reg
P:QRS variable common 2:1
Atrial flutter
Narrow QRS
P waves hidden or retrograde
Reg or irregular
Originates in atria or AV
SVT
Short PR interval <0.12
Wide QRS, Presence of delta wave
ST-T wave changes or abnormalities
Association with paroxysmal tachycardia
Wolff Parkinson white
QT 0.36-0.44 QTc Male >440ms Females > 460ms >500ms higher risk for torsades
Causes-
Hypokalaemia
Hypocalcaemia
Medications- tricyclics anti depressants, methadone, ondansetron,clarithromycin,erythromycin
ProLonged QT
Type 1: coved ST elevation >=2mm in v1-v3 followed by a negative T wave.
Type 2 : saddleback ST elevation
Type 3 : saddleback or coved ST elevation < 2mm.
Brugada
QRS >0.12 secs
Slurred S wave in leads 1 & v6
RSR pattern in v1
Positive complex in v1
RBBB
QRS >0.12 secs
Broad monomorphic R waves in 1 & v6
Broad monomorphic S waves in v1
LBBB
Add depth of S wave in V1 & V2(deepest) to R wave in V5 or V6
LVH >35mm
Can appear to be ST elevation
Left ventricular hypertrophy
P wave =
PR interval =
QRS =
Q-T =
P wave -<0.08 / 2 small squares
PR interval - 0.12 - 0.20 / 3-5 small squares
QRS - <0.12 / 3 small squares
Q-T - 0.35 - 0.43 / 9-11 small squares
Upright in all leads except aVR & v1
Can be inverted in I’ll patient
T waves Seen in - Children normal findings MI BBB Ventricular hypertrophy PE raised intracranial pressure
