C o m p e t e n c e i n E C G D i a g n o s e s

Lesson II - A "Method of ECG Interpretation
4. Waveform Description
Carefully analyze the 12-lead ECG for abnormalities in each of the waveforms in the order
in which they appear: P-waves, QRS complexes, ST segments, T waves, and... Don't forget
the U waves.
P waves (lesson VII): are they too wide, too tall, look funny (i.e., are they
ectopic), etc.?
QRS complexes: look for pathologic Q waves (lesson IX), abnormal voltage
(lesson VIII), etc.
ST segments (lesson X): look for abnormal ST elevation and/or depression.
T waves (lesson XI): look for abnormally inverted T waves.
U waves (lesson XII): look for prominent or inverted U waves.
5. ECG Interpretation
This is the conclusion of the above analyses. Interpret the ECG as "Normal", or
"Abnormal". Occasionally the term "borderline"is used if unsure about the significance of
certain findings. List all abnormalities. Examples of "abnormal"statements are:
Inferior MI, probably acute
Old anteroseptal MI
Left anterior fascicular block (LAFB)
Left ventricular hypertrophy (LVH)
Nonspecific ST-T wave abnormalities
Any rhythm abnormalities
Example:
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