Protection of laryngeal mucosa and function in laryngeal burns by heat absorption of perilaryngeal tissue.

Objective: The laryngeal tissue carries most of the heat during inhalation injury. This study aims to explore the heat transfer process and the severity of injury inside laryngeal tissue by horizontally studying the temperature rise process at various anatomical layers of the larynx and observing the thermal damage in various parts of the upper respiratory tract.

Methods: The 12 healthy adult beagles were randomly divided into four groups, and inhaled room temperature air (control group), dry hot air of 80 °C (group I), 160 °C (group II), and 320 °C (group III) for 20 min, respectively.

Mucosal fluid evaporation is not the method of heat dissipation from fourth-degree laryngopharyngeal burns.

This study was designed to explore whether mucosal fluid evaporation represents a method of heat dissipation from thermal air inhalation injury and to assess laryngopharyngeal tissue damage according to heat quantity changes of dry air and vapour. Fifteen adult male beagles were divided into five groups to inhale heated air or vapour for 10 min as follows: control group (ordinary air), group I (91-110 °C heated air), group II (148-175 °C heated air), group III (209-227 °C heated air), and group IV (96 °C saturated vapour). The heat quantity changes of the dry air and vapour were calculated via thermodynamic formulas.

Heat dissipation by blood circulation and airway tissue heat absorption in a canine model of inhalational thermal injury.

Objective: This study aimed to further explore heat dissipation by blood circulation and airway tissue heat absorption in an inhalational thermal injury model.

Methods: Twelve adult male Beagle dogs were divided into four groups to inhale heated air for 10min: the control group, group I (100.5°C), group II (161.

Laryngeal morphologic changes and epidemiology in patients with inhalation injury: a retrospective study.

Background And Objectives: Laryngeal morphologic changes are important in risk assessment of upper airway obstruction (UAO) after inhalation injury. This retrospective study evaluates the clinical application of laryngeal burn classification system.

Materials And Methods: Clinical data from January 1999 to June 2013 were analyzed retrospectively.

[Analysis of clinical characteristics of 443 patients with inhalation injury].

Objective: To explore the epidemiological characteristics of inhalation injury and to summarize the clinical application experience of diagnostic standard of burn of larynx.

Methods: Medical records of 443 patients with inhalation injury admitted to our burn unit from January 1999 to June 2013 were analyzed, including gender, age, severity of inhalation injury, complications and diseases before injury; total area and that of full-thickness burn injury, admission time after burn, and burn condition of larynx of patients with different degrees of inhalation injury; treatment and outcome including rate, time, and complication of tracheotomy, mortality, and cause of death. Data were processed with nonparametric Kruskal-Wallis test and chi-square test.

[Treatment of post-traumatic chronic calcaneal osteomyelitis and soft tissue defect by using combined muscle and skin flaps of calf].

Objective: To investigate the effectiveness of distally pedicled peroneus brevis muscle flaps and reverse sural neurovascular island flaps for post-traumatic chronic calcaneal osteomyelitis and soft tissue defects.

Methods: Between January 2008 and January 2012, 9 patients suffering from post-traumatic chronic calcaneal osteomyelitis and soft tissue defects were treated, including 8 males and 1 female with an average age of 33 years (range, 18-46 years). The left heel was involved in 4 cases, and right heel in 5 cases.

Circulational heat dissipation of upper airway: Canine model of inhalational thermal injury.

Background: The upper airway has powerful heat-absorbing ability, in which the blood circulation may play an important role.

Objective: This study aimed to explore the circulational heat-dissipating ability, and to investigate the contribution of blood circulation to the heat-absorbing ability of upper airway.

Methods: 18 adult, male Beagle dogs were divided into three groups to inhale thermal dry air of 70-80°C, 150-160°C or 310-320°C for 20min.

[Analysis of 59 cases of frostbite in plain region].

Objective: To retrospectively survey frostbite in patients living in plain regions, and to analyze the features of frostbite and the results after hospitalization.

Methods: Fifty-nine patients with frostbite, aged from 15 to 85 years admitted in Beijing Jishuitan Hospital from 1992 to 2007, were enrolled in this study. Occupation, cause of the injury, initial visit time, position and degree of depth (assessed according to the standard of burn injury) of frostbite, and amputation rate of patients were recorded and analyzed.