Cardiac arrest due to a missed diagnosis of Boerhaave's syndrome

A 91-year-old presented with a rare cause of cardiac arrest. He was initially admitted with severe back pain following vomiting and diagnosed with probable aspiration pneumonia. On day 3 of admission, he was discovered in cardiac arrest and cardiopulmonary resuscitation was started. On intubation, a left-sided pneumothorax and subcutaneous emphysema were noted. Needle decompression showed gastric fluid leaking from the cannula. The patient regained a cardiac output, and a subsequent CT scan confirmed a large pneumomediastinum with air tracking to the neck and chest, and bilateral pneumothoraces. A diagnosis of Boerhaave's syndrome was made. The patient was transferred to the intensive care unit but did not survive. This case demonstrates the importance of looking for and treating the rarer reversible causes of cardiac arrest, and of maintaining a high index of suspicion for Boerhaave's syndrome. Despite its rarity, Boerhaave's syndrome is often misdiagnosed on initial presentation, leading to delayed treatment and poor outcomes.

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