This post is an interpretation of the ECG Case 202
- Rate: 66 bpm
- Rhythm:
- Sinus Arrhythmia
- Axis:
- Inferior (+90 deg)
- Intervals:
- PR – Normal (~120ms)
- QRS – Normal (~80ms)
- QT – 560-600ms (QTc Bazette ~ 610-630 ms)
- Note absolute QT interval greater than 1/2 of R-R interval
- Segments:
- Up-stroked ST segment in leads I, V2-4
- Additional:
- T Wave Inversion in aVL, aVR
Interpretation
Marked QT Prolongation secondary to toxic ingestion. Using QT-RR Nomogram as described by Chan et al. this patient is ‘at risk’ of developing Torsades de Pointes.
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