ECGs

A 57-year-old woman with a long history of untreated hypertension presents to an urgent care clinic with complaints of 1 day of palpitations.

A 70-year-old man with severe chronic obstructive pulmonary disease is seen in the medical walk-in clinic for increasing cough. The nurse practitioner takes his pulse and notes an irregular heart rate. He obtains an ECG.

A 35-year-old woman recently diagnosed on echocardiogram with a benign left atrial myxoma causing mitral regurgitation has the following ECG. She does not complain of any symptoms.

A 62-year-old man with an extensive history of smoking and a recent diagnosis of squamous cell carcinoma of the neck that was treated with radiation now presents with 2 weeks of intermittent dizzy spells and one episode of syncope.

A 52-year-old man with no known cardiac history presents to the emergency department with fatigue and dizziness. He is hypotensive with a blood pressure of 74/50 mmHg. What's your interpretation ?

A 50-year-old woman came to the ED because of the sudden onset of palpitations and severe breathlessness. What abnormalities do the ECG show ?

This ECG was recorded from a 17-year-old girl who was breathless, had marked ankle swelling with signs of right heart failure, and who had been known to have a heart murmur since birth. She was acyanotic.

An 80-year-old man was admitted to hospital because of a sudden onset of palpitations associated with breathlessness. He had congestive cardiac failure and a heart murmur suggestive of aortic regurgitation. What is the rhythm ?

A 30-year-old woman complains of episodes of palpitations associated with dizziness and breathlessness. These begin and stop suddenly. She has had them for many years, but they are becoming more frequent and more severe.

This ECG was recorded from a 40-year-old man who was admitted to hospital after collapsing in a supermarket. By the time he was seen he was well, and there were no abnormal physical signs.