This ECG is from a woman in her 60s who presented in acute heart failure with dyspnoea and intermittent chest discomfort.

This ECG shows atrial fibrillation, LVH and diffuse ST-T changes.

This ECG is from a patient in their 50s who presented unconscious and tachycardic after a seizure.

This ECG shows alternating wide and narrow complex tachycardias at the same rate, likely due to aberrancy.

This ECG is from an elderly patient who presented with a massive hemiplegic ischemic stroke due to MCA thrombus.

This ECG shows atrial fibrillation with ventricular pacemaker and significant artefact. The AF went undiagnosed.

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.

This ECG is from a man in his 80s who presented feeling generally unwell and nauseous, on a background of chronic atrial fibrillation, diabetes and hypertension.

This ECG is from a woman in her 70s who complained of dizziness on a background of ischaemic heart disease, atrial fibrillation and diabetes.

This ECG is from a man in his 70s who presented with syncope for 20 seconds. He had no past medical history. He recovered fully.

This ECG is from a man in his 20s with palpitations and chest tightness on a background of Wolff Parkinson White syndrome.

This ECG is from a woman in her 80s who presented with a 4 day history of RUQ pain on a background of known gallstones. 

This ECG is from a man in his 80s who presented with dizziness and an abnormal gait.