ECG Stuff Flashcards
Upright P Wave Leads
Leads 1, 2, V4, V5, V6 and aVF
Inverted P Wave Leads
aVR
Variable P Wave Leads
Lead 3, aVL and others
PR Interval Length
.12 to .20 seconds
QRS Complex Length
.05 to .10 seconds
Q shouldn’t be more than .03 of this
ST Segment Elevation and Depression
Elevated 1-2 mm normal
Depressed up to .5 mm normal (but never more)
Upright T Wave Leads
Leads 1, 2, V3, V4, V5 and V6
Inverted T Wave Leads
aVR
Variable T Wave Leads
Leads 3, aVL, aVF, V1 and V2
Premature Ventricular Contraction
ECG Features
Lost P wave
Early and wide QRS complex
ST segment elevated/depressed opposite of R peak
Premature Atrial Contraction
ECG Features
Early P wave, very close to previous T wave
Rhythm thrown off after PAC
Atrial Fibrillation
ECG Features
Irregularly irregular P wave peaks in rapid succession
Ventricular Tachycardia
ECG Features
Very fast rate with regular rhythm
No P waves, wide QRS
Supraventricular Tachycardia
ECG Features
Regular, narrow QRS complexes
No Pwaves
Inferior Heart Region
Leads and Associated Artery
Leads II, III and aVF
Right Coronary Artery
Anterior Heart Region
Leads and Associated Artery
Leads V2, V3, V4
Anterior Interventricular Artery
Septal Heart Region
Leads and Associated Artery
Leads V1 and V2
Anterior Interventricular Artery
Lateral Heart Region
Leads and Associated Artery
Leads I, aVL, V4, V5 , V6
Circumflex Artery
STEMI
ECG Features
ST segment elevation greater than 2mm
NSTEMI
ECG Features
ST segment depression and T wave inversion
MI ECG Progression
Initial Ischemia shows T wave changes
Tissue Injury shows ST segment changes
Infarction (necrosis) shows Q wave deepening and smaller R peak
