Systematic review of laryngohyoid fractures in fatal falls: A potential mimicker of strangulation

Fractures of the laryngohyoid complex are classically associated with deaths due to strangulation. Recent studies, however, indicate the possible presence of such fractures in fatal falls. The primary focus of this systematic review is to analyze the characteristics of laryngohyoid fractures in the context of falls to aid in a more accurate interpretation of autopsy findings. Search for relevant literature occurred on PubMed on the 26th of October 2022, and Embase and Web of Science on the 5th of November 2022. Inclusion criteria included being a primary study, published in English, involving fatal falls and injuries to the laryngohyoid complex, and presenting sufficient details about the relevant cases. Four case reports and six descriptive retrospective studies were included in the final analysis yielding a sum of 38 cases. The risk of bias was assessed using the Joanna Briggs Institute (JBI) critical appraisal tools. Potential limitations of this study include the inclusion of case reports and studies published in English only. The cumulative male-to-female ratio was 23:15 with a mean age of 48 years old. The fall height ranged from standing height to 60 m. Forty-three fractures to the laryngohyoid complex were identified with the thyroid cartilage most commonly affected, followed by fracture of the hyoid bone, and finally the cricoid cartilage. While cases of falls did indeed display hallmark laryngohyoid findings classically displayed in strangulation, they also featured unique presentations such as fractures of the clavicle and a reduced prevalence of conjunctival petechiae.

A Case of Traumatic Diaphragm Rupture: A Differential Diagnosis Not to Be Missed

Traumatic diaphragmatic rupture is a rare condition with clinical stigmata that overlaps with a similarly fatal condition such as tension pneumothorax. Although the former is much rarer, early differentiation between a ruptured diaphragm and a tension pneumothorax is crucial to avoid incorrect interventions. In this case, we present a middle-aged male construction worker who fell from the roof of a two-story building and presented to our emergency department with a clinical presentation similar to that of tension pneumothorax. However, a chest X-ray later revealed a left diaphragmatic hernia, which completely altered the management. This case helps highlight the importance of widening one's list of differential diagnoses, especially in the setting of a hectic environment and a vague presentation.

Congenital Methemoglobinemia-Induced Cyanosis in Assault Victim

Methemoglobinemia is a blood disorder in which there is an elevated level of methemoglobin. In contrast to normal hemoglobin, methemoglobin does not bind to oxygen, which leads to functional anemia. The signs of methemoglobinemia often overlap with other cardiovascular and pulmonary diseases, with cyanosis being the key sign of methemoglobinemia. Emergency physicians may find it challenging to diagnose cyanosis as a result of methemoglobinemia.

Our patient is a healthy 28-year-old male, a heavy smoker, who presented to the emergency department with multiple minimum bruises on his body, claiming he was assaulted at work. He appeared cyanotic with an O₂ saturation of 82% (normal range is 95-100%) in room air. He also mentioned that his sister complained of a similar presentation of cyanosis but was asymptomatic. All these crucial points strengthened the idea that methemoglobinemia was congenital in this patient.

The case was challenging to the emergency physician, and there was significant controversy over whether the patient's hypoxia was a result of the trauma or congenital methemoglobinemia.