Conditions Flashcards
Sinus Tachycardia
Occurs when HR is above 100bpm
Sinus Bradycardia
Occurs when HR is below 60bpm
PAC
Pre atrial contraction
P wave showing earlier than expected.
P waves look different than other P waves.
Atrial Fibrillation
Bumpy baseline!
No real p waves
Atrial Flutter
Sawtooth patterns.
In lead II AND III
Multi-focal atrial tachycardia
Each P wave looks different.
PR intervals will vary
Lead II
PVC
lead II
QRS shows up earlier than expected
No T wave
Wide QRS
Followed by pause
Ventricular Tachycardia
3 or more PVC in a row
Ventricular Fibrillation (V Fib)
No true QRS
Absent P waves
Bag of worms
Asystole
Flat line
First degree AV block
Delay
PR interval prolonged
PR longer than .20 seconds
Second degree AV block (wenckebach)
Lead II
PR interval is getting progressively longer
Until P wave fails to conduct QRS
Second degree block (mobitz II)
Not lengthening PR interval
Dropped QRS
3rd Degree block
Complete block
Lots of P waves
Few QRS
RBBB
Widened/deformed QRS
Inverted T waves
V6 regular QRS
Double notched in V1-V3
LBBB
Widened/deformed QRS
Deep diving Q wave V1-V3
Double notched R waves V4-V6
Inverted T
LAD (left axis deviation)
QRS in lead I is positive and lead aVF is negative
RAD (right axis deviation)
Lead I QRS is negative and aVF is positive
RAH (right atrial hypertrophy)
V1
First diphasic wave is largest
LAH (left atrial hypertrophy)
V1
Terminal of diphasic P wave is largest
RVH (right ventricular hypertrophy)
V1-V3
Large R wave
Progressively smaller in V2-V6
LVH (left ventricular hypertrophy)
Large QRS deflection V1-V6
Possible T wave inversion
Ischemia
V2-V6
Inverted symmetrical T waves
ST segment depression (ANYWHERE)
Injury
ST Segment elevation
Can’t localize it
Only seen in lead where injury occurs
Subendocardial Infarction
Non Q wave
Flat depression of ST segment/inverted T wave
V3V4
Transmural Infarction
Q wave
Q wave at least a box wide
Q wave deep diving in 2 leads next to each other
Inferior Infarcts
ST segment elevation and pathological Q waves in II, III, aVF
Lateral infarcts
ST segment elevation and pathological Q waves in I, aVL, V5, and V6
Anterioseptal infarcts
ST segment elevation and pathological Q waves in V1-V4
Digitalis Effect
ST segment depression in V4
Or low T, short QT interval, short PR interval
Pericarditis
ST segment elevation
No Q, T aren’t tall, PR interval is depressed
All leads except aVR