In the ECG Quest archives, this ECG has been tagged with: - Chest pain Dyspnoea Normal Axis Wide QRS LBBB 12-Lead Serial 12-lead Dr Smith's ECG Blog CC BY-NC

ECG #26429

Rate Axis QTc Paint
Calibrate Rate Measure Interval Measure Height
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Which method do you want to use to calculate the rate?

Answer the questions to calculate the corrected QT interval!

Which formula do you want to use to correct the QT interval for rate (QTc)?

Answer the questions to calculate the cardiac axis!

Is Lead I (not V1) positive, negative or isoelectric?

Is Lead aVF positive, negative or isoelectric?

This ECG is from a very elderly woman who presented with shortness of breath, chest and back pain intermittently for several nights. It was relieved by isosorbide, but when she lost this medication she became worse. She had a background of CAD, ischemic cardiomyopathy and heart failure with an ICD in situ for primary prevention. On arrival she was hypoxic (SpO2 88%) with a good BP and HR 90, but improved on CPAP then BIPAP. This was her previous baseline ECG.


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This is a library of 2409 free, open access, re-usable ECGs from across the web.

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This is an experiment in digital curation. The idea is to collect resources to increase awareness and accessibility. Over time, more ECGs in the collection will be tagged to make it easier to find them and reused in new interactive quizzes.

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