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#ECGoftheWeek

#ECGoftheWeek Which of the following does this 👇 ECG represent? A. Atrial fibrillation with controlled ventricular rate B. Frequent premature ventricular contractions C. Periods of atrial bigeminy D. Sinus arrhythmia

Now for our latest #Quizoftheweek!

Which of the following does this 👇ECG represent? A. Multifocal atrial tachycardia B. Atrial fibrillation with an uncontrolled ventricular response C. Atrial flutter with 2:1 and 4:1 conduction D. Sinus tachycardia Check back soon for the answer!

✅The answer is B: atrial fibrillation with an uncontrolled ventricular response. The ECG shows an irregularly irregular ventricular rhythm at about 120 bpm. There are no P waves. Low amplitude atrial fibrillatory waves are present, best seen in the V1 rhythm strip.

#CaseoftheWeek 🧐Can you crack this case? A 7-year-old boy with a seizure disorder and developmental delay has cortical tubers on a brain MRI. Which of the following cardiac tumors is he likely to develop?

✅The answer to today's quiz is C: rhabdomyoma. Tuberous sclerosis is an autosomal dominant genetic disorder due to mutations in the tumor suppressor gene hamartin or tuberin. Cardiac rhabdomyomas are a major feature in this disorder. Seizures and developmental delay are common.

Left atrial myxoma is more common in older individuals and can cause passive pulmonary hypertension if the tumor obstructs the valve. Cardiac sarcomas and lymphomas are extremely rare.