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Types of heart block along with what it means with different ecg result samples
Typology: Cheat Sheet
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Agonal rhythm/asystole Atrial Fibrillation Atrial Flutter Ventricular Fibrillation Monomorphic Ventricular Tachycardia Normal Sinus Rhythm Polymorphic Ventricular Tachycardia Pulseless Electrical Activity Supraventricular Tachycardia Second-degree atrioventricular block (Mobitz I, Wenckebach) Second-degree atrioventricular block (Mobitz II block) Sinus bradycardia Sinus tachycardia Third-degree atrioventricular block RHYTHM & ♥ ETIOLOGY
♥ Normal, None RHY – Regular R – 60- P – Upright PRI – 0.12 – 0. QRS – 0.04 –
None, normal rhythm
♥ Exercise ♥ Anxiety ♥ Caffeine ♥ Nicotine ♥ Fever ♥ Shock ♥ CHF ♥ Hypotension ♥ Pain ♥ Hypoxemia ♥ Anterior MI RHY – Regular R – 100 - 160 P – Upright PRI – 0.12 – 0. QRS – 0.04 –
Rate 100 - 160
♥ Damage SA ♥ Normal sleep athletes ♥ Vagal ♥ Glaucoma ♥ Hypothermia ♥ Inferior MI ♥ Drugs – MS, digoxin, Inderal ♥ IICP R – below 60 P – Upright PRI – 0.12 – 0. QRS – 0.04 –
Premature Ventricular Contraction/Depolarizati on ♥ Hypoxia, ♥ Hypotension ♥ anemia ♥ Ischemic hrt dis ♥ Electrolytes ♥ M.I. ♥ Myocarditis, pericarditis ♥ CHF ♥ Stress, fatigue, smoking, overeating, caffeine ♥ Hypoglycemia ♥ Sepsis ♥ Cyclic anti- depressants ♥ Acidosis
RHY – Irregular R – 60- P – Upright PRI – 0.12 – 0. QRS– 0.04 – 0. SR, early beat has VENT beat (wide & bizarre)
♥ Not visible sudden start or stop. RHY – Regular R – 160 - 250 P – Upright PRI – 0.12 – 0. QRS– 0.04 – 0. Rate above 160 - 250
RHY – Regular or Irregular PRI – constant QRS – normal or wide Regular or Irregular EXTRA Ps
♥ Same as 1st^ degree RHY - Regular PRI – vary QRS – usually wide Regular EXTRA Ps PRI varies greatly
♥ All complexes are the same shape and look the same ♥ Wide complex tachycardia RHY – Regular R – Above 100 P – None PRI –None QRS – Wide, Bizarre R over 100 All Vent beats
♥ Following V Tach ♥ Acute MI ♥ Electrolyte Imbalance RHY – Chaotic R – None P – None PRI –None QRS – none, fibrillatory line Chaotic wavy line. No pulse.
RHY – Chaotic waves R – None P – None PRI –None QRS – points twist Chaotic wavy line. No pulse. Points twist
♥ Dying heart ♥ Drugs used in cardiac arrest provide some electrical waves. RHY – Regular R – Slow P – None PRI – None QRS – very very wide Slow wide bizarre stretched out waves. No Pulse
♥ Primary event in cardiac arrest. ♥ Untreated V-tach or V-fib RHY – None unless only Ps R – No Vent rate P – may be present PRI – None QRS – None Straight line or only Ps No Pulse
Table for Small Box Method To calculate the heart rate, count the number of 0.04 squares (or small boxes) Small Boxes from R to R
Chaotic wavy No pulse. Points twist Slow wide stretched out Straight line or only Ps No Pulse
To calculate the heart rate, count the number of 0.04 squares (or small boxes) between two QRS complexes (1500 divid
between two QRS complexes (1500 divided by X = HR)
http://www.univie.ac.at/cga/courses/BE513/EKG/qrs.gif http://pspl.technion.ac.il/projects/2004s22/ecg1.JPG