Objectives: To review the literature on near hanging, focusing on the pathophysiology, and relating this to the clinical features and management.
Methods: English language articles published in the past 15 years and major textbooks of emergency and forensic medicine were searched. Eight case series and six relevant single case reports were identified. Only articles concerned with non‐judicial near hanging were reviewed. Data concerning the incidence of cervical spine injury, laryngeal injury, pulmonary complications and mortality were extracted. Not the case series documented the presence or absence of all these factors, resulting in differing total patient numbers in each category. Unusual complications of near hanging were documented from case reports.
Results: Cervical spine injury occurred in four of 689 patients (0.6%). Pulmonary complications occurred in 15 of 133 patients (11%). The in‐hospital mortality rate was 23% (29 deaths of 128). No clinically significant laryngeal injuries were reported. Unusual complications documented included hyperthermia, status epilepticus, carotid artery dissection, subarachnoid haemorrhage and pneumoperitoneum.
Conclusions: Cervical spine injury, although uncommon, does occur in near hanging, and emergent airway management should take this into account. Laryngeal injury sufficiently severe to interfere with endotracheal intubation does not appear to occur. Cerebral oedema, aspiration pneumonia and acute respiratory distress syndrome are the commonest in‐hospital complications. Management of near hanging involves establishment of a safe airway, plus treatment of pulmonary and cerebral oedema along standard lines. In‐hospital mortality remains high.