Hypokalemia

Hypokalemia (low serum potassium) can cause flattened T waves and prominent U waves. There may also be ST depression (but this is not sensitive).

See also: Electrolytes

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References

32 ECGs found. Sort by:
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In the ECGquest archives, this ECG has been tagged with: - Long QT ST elevation in aVR Tall U waves Widespread ST depression Hypokalemia 12-Lead Dr Smith's ECG Blog CC BY-NC
Diffuse ST depression, and ST elevation in aVR. Left main, right?

This ECG is from a middle aged male who presented with diffuse pain on a background of sickle cell disease.

This ECG shows LVH, diffuse ST depression with ST elevation in aVR and apparrent prolonged QTc due to U waves. The cause was hypokalemia (2.6).

In the ECGquest archives, this ECG has been tagged with: - Chest pain Widespread ST depression Hypokalemia 12-Lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Chest pain and Diffuse ST depression, with STE in aVR. You probably think it is left main…..

This ECG is from a woman in her 70s who presented with very atypical chest pain lasting days that was worse with movement and palpation.

This ECG shows diffuse ST depression likely due to hypokalemia as it normalised after replacement.

In the ECGquest archives, this ECG has been tagged with: - Irregular Normal rate Tall U waves Wide QRS Atrial fibrillation Hypokalemia 12-Lead Dr Smith's ECG Blog CC BY-NC
Pre-existing Left Bundle Branch Block and Atrial Fib: what is alarming on this routine pre-procedure ECG?

This ECG is from an elderly patient who had a routine pre-procedure ECG.

This ECG shows atrial fibrillation with LBBB (old) and large U waves. The cause was hypokalemia.

In the ECGquest archives, this ECG has been tagged with: - Weakness Long QT T-U waves Tall U waves Hypokalemia 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
A young man with back spasms

This ECG is from a young man who presented with weakness and back pain on a background of an eating disorder and chronic kidney disease.

In the ECGquest archives, this ECG has been tagged with: - Weakness Long QT Tall U waves Hypokalemia 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
A pathognomonic ECG you should recognize instantly

This ECG is from a patient of unknown age who presented with generalised weakness and malaise.

In the ECGquest archives, this ECG has been tagged with: - Diarrhoea Vomiting Nonspecific baseline artefact Long QT Tall U waves Hypokalemia 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 16th July 2018 – Interpretation

This ECG is from a woman in her 50s who presented with diarrhoea and vomiting on a background of paroxysmal AF and anxiety.

In the ECGquest archives, this ECG has been tagged with: - Tall U waves Hypokalemia Toxicology / Overdose 12-Lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Insulin Overdose: Does this ECG help to Guide your Management?

This ECG is from a patient of unknown age who presented after an insulin overdose.

In the ECGquest archives, this ECG has been tagged with: - Normal Axis Normal rate Regular Tall U waves Hypokalemia 12-Lead Dr Smith's ECG Blog CC BY-NC
Look at these “T”-waves

This ECG is from an alcoholic who presented with confusion.