EKG of the Week
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+ EKG Interpretation
Dr. Ohlbaum's Explanation
There are P waves, with a P before every QRS and a QRS after every P wave. The rate is 78 so it is normal sinus rhythm. There is a slight irregularity if you march it out with a pair of calipers. The PP/RRs get longer and longer and then shorter and shorter in a rhythmic way without any change in the P or QRS morphology. This is sinus arrhythmia related to breathing which is normal and often prominent in younger patients.
The QRS looks normal. There is a prominent “notch” on the downslope of the QRS and a concave looking ST elevation which is consistent with early repolarization.
REMEMBER that STEMI is first and scariest thing to think about, it is still good to know the others. Look up other causes of ST Elevation.
