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  • Title: Massive subcutaneous emphysema, bilateral pneumothorax, pneumomediastinum, pneumoperitoneum, pneumoretroperitoneum, and pneumoscrotum after multiple direct laryngoscopies: an autopsy case report.
    Author: Ono Y, Okubo Y, Hashimoto K, Inokuchi R, Odajima H, Tase C, Shinohara K.
    Journal: J Anesth; 2015 Aug; 29(4):622-6. PubMed ID: 25784502.
    Abstract:
    Multiple endotracheal intubation (ETI) attempts increase the risk of airway-related adverse events. However, little is known about autopsy findings after severe ETI-related complications. We present the detailed pathological findings in a patient with severe ETI-related complications. A 77-year-old obese male suffered cardiopulmonary arrest after choking at a rehabilitation facility. Spontaneous circulation returned after chest compressions and foreign-body removal. After multiple failed direct laryngoscopies, the patient was transferred to our hospital. He had massive subcutaneous emphysema, bilateral pneumothorax, pneumomediastinum, pneumoperitoneum, pneumoretroperitoneum, and pneumoscrotum on admission, and died from hypoxic brain injury 15 h later. Autopsy revealed severe oropharyngeal, laryngeal, and left lung lower lobe injury. The likely mechanisms of diffuse emphysema were (1) oropharyngeal injury associated with multiple ETI attempts and excessive ventilation pressures and (2) left lung lower lobe injury associated with chest compressions and other resuscitative procedures. Multiple laryngoscopies can cause severe upper-airway injury, worsen respiratory status, and make ETI more difficult-a vicious circle that can be prevented by limiting ETI attempts. This is particularly important in unfavorable environments, in which backup devices and personnel are not easily obtained. The pathological findings in our patient caution against repeated attempts at ETI during resuscitation.
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