Put it together Flashcards
What do you look for in atrial enlargement?
Look at P waves in lead II and V1
RAE: increased amplitude in first portion of P; no P duration change; possible right axis deviation
LAE: increased amplitude in second portion of P (not always tho); increased P duration; no significant axis deviation
What do you look for in ventricular hypertrophy?
RVH:
right axis deviation;
R>S in V1 and R
LVH: (the more present, the more likely it’s LVH)
R in V5/6 plus S in V1/2 >35mm;
R in V5>26mm;
R in V6>18mm;
R in V6>R in V5;
R in aVL>13mm;
R in aVF> 21mm;
R in I>14mm;
R in I plus S in III>25mm
List all the basic supraventricular arrhythmias and their characteristics
PSVT: regular rhythm, retrograde P if visible, carotid massage can slow/terminate
A Flutter: regular rhythm, saw-toothed fixed block, carotid massage increases block
PAT: regular rhythm, warm-up and cool-down period, carotid massage has no effect
A Fib: irregular rhythm, undulating baseline, carotid massage may slow ventricular rate
MAT: irregular rhythm, at least 3 different P wave morpgologies, carotid massage has no effect
Identify the ECG
Sinus tachycardia. Note also the presence of left axis deviation.
Identify the ECG
The rhythm is sinus tachycardia. Deep anterior Q waves and lateral Q waves indicate an anterolateral myocardial infarction.
Identify the ECG
The QRS complexes are wide and distorted. In leads V5 and V6, the QRS complexes are notched, and there is ST segment depression and T wave inversion. This patient has left bundle branch block.
Identify the ECG
The broad, abnormal QRS complexes may immediately attract your attention, but notice the pacer spikes before each one. The spikes are preceded by a P wave (look at leads II, III, aVF, V1, and V2). This pacemaker fires whenever it senses a P wave, ensuring ventricular contraction.
Identify the ECG
Note the deep Q waves in leads II, III and aVF. This tracing shows an inferior infarct.
Identify the ECG
The QRS complexes are greatly widened, with beautiful rabbit ears in lead V1. This patient has right bundle branch block.
Identify the ECG
The rate is very fast and regular, and the QRS complexes are narrow. Retrograde P waves can be seen in lead III. This patient has a paroxysmal supraventricular tachycardia.
Identify the ECG
The rhythm is irregular, and the QRS complexes are narrow. This patient is in atrial fibrillation.
Identify the ECG
You are staring at the classic saw-toothed pattern of atrial flutter.
Identify the ECG
Left ventricular hypertrophy by all criteria.
Identify the ECG
Wolff-Parkinson-White syndrome.
