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Persistent air leak secondary to pneumothorax in COVID-19: A case report and review of literature.
An air leak is a pathologic communication between an area of the endobronchial tree and the pleural space, causing continued air flow. The communication can originate from a distal portion of the airway, causing an alveolar-pleural fistula, or from a more proximal airway, causing a bronchopleural fistula. When the air leak persists beyond 5-7 days, it is classified as persistent air leak (PAL). PAL has serious implications on patient management and outcomes, such as prolonged chest tube maintenance, high rate of infections, ventilation-perfusion mismatch, and prolonged hospital stay with higher morbidity and mortality. There are currently no guidelines for the management of PAL in COVID-19 patients. We presented a case of PAL in a patient with COVID-19-associated pneumothorax successfully treated with a one-way endobronchial valve. We also reviewed current published cases of PAL secondary to COVID-19-associated pneumothorax and the various methods they were treated. The first line treatment was insertion of one or more chest tubes, but the persistence of an air leak then led to other treatment modalities. Initial early surgical evaluation followed by pleurodesis is recommended for the management of PAL. The most common surgical approaches include VATS or open thoracotomy with mechanical or chemical pleurodesis or pleurectomy. However, surgery is not always a feasible option for critically ill patients. In such cases, there are multiple less invasive options for the management of PAL, including implantable devices, such as Watanabe spigots and stents, and chemical agents, such as thermal treatments, hemostatic substances, and tissue adhesives.
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