Acute upper airway obstruction in the postburn period

Review Airway management in pediatric patients with burn contractures of the face and neck

Burn injury is a common cause of trauma, non-fatal burn injuries are a leading cause of morbidity, and significant numbers of the victims are children. Scar contracture after burn injury can cause severe functional limitation, pain, aesthetic and psychological problems and patients may present for contracture release and reconstructive surgery. The aim of this systematic review was to identify research relevant to airway management of children with burn contracture of the face and neck with special emphasis on awake airway management and airway anesthesia, and synthesize results that can aid practice. Literature search was performed on Medline, PubMed, Cochrane Library, and Google Scholar with selected keywords. The search was restricted to human subjects of ≤18 year age, there was no language or time restriction and the final search was concluded in July 2021. The review included 41 articles involving airway management of 56 patients in 61 anesthesia episodes. Patients aged between 8 months to 18 years. Mask ventilation and direct laryngoscopy, video laryngoscopy, optical stylet, supraglottic airway, flexible scope intubation and tracheostomy, and extracorporeal membrane oxygenation were the devices and methods used for securing the airway and oxygenation while the patients were awake or after anesthesia induction. Detailed planning and patient preparation are the fundamentals of airway management of pediatric patients with burn contracture of the face and neck, awake airway management with airway anesthesia can be safely used in selected patients, this review provides information for good clinical practice and might serve to improve the care of such children.

E-Cigarette Burns and Explosions: What are the Patterns of Oromaxillofacial Injury?

PURPOSE

With the recent increase in popularity of electronic cigarette use in the United States, its harmful effects are not only limited to smoke inhalation, but also to the possibility of e-cigarette device malfunction. The purpose of this review is to characterize oromaxillofacial trauma secondary to electronic cigarette device explosion.

METHODS

For this systematic review, PubMed and Embase were searched in October 2019 using the following search terms: e-cigarette burns, e-cigarette injury, and e-cigarette explosions, which yielded 400 studies. Basic science research, animal studies, non-English studies, and reports of non-oromaxillofacial injuries were excluded. Study subject demographics, mechanism of trauma, injury type, treatment, and sequelae were recorded and analyzed.

RESULTS

Of all studies, 20 studies met inclusion criteria, including 14 case reports and 6 case series, with a total of 21 study subjects. For cases that reported sex, 100% were male (20) with a mean age of 29.5 years. Most common lacerations and/or burns involved the lips (10/21), tongue (8/21), soft palate and/or hard palate (4/21), and nose (5/21). Thirteen subjects underwent surgeries including oral-maxillofacial surgery or dental implants (7/13), bone graft repair (3/13), open reduction and internal fixation for preservation of sinus outflow tracts (2/13), foreign body removal from the cervical spine (1/13), and iridectomy (1/13). Reported complications included bone loss secondary to traumatic fracture, tinnitus and hearing loss, lip paralysis secondary to persistent edema, major depressive disorder/ post-traumatic stress disorder, persistent sinusitis, photophobia, and bilateral axillary and hand contractures.

CONCLUSIONS

Electronic cigarette device malfunction and explosion carries great risk for acute oromaxillofacial trauma that may be disfiguring. With the increasing popularity of electronic cigarette use, clinicians and patients should be advised regarding dangers of electronic cigarette use.

Airway management in patients with burn contractures of the neck

Airway management of patients with burn contracture of the neck (PBC neck) is a challenge to the anesthesiologist. Patient evaluation includes history, physical and airway examination. A safe approach in the airway management of a patient with moderate to severe PBC neck is to secure the airway with the patient awake. The anesthesiologist should have a pre-planned strategy for intubation of the difficult airway. The choices advocated for airway management of such patients include awake fiberoptic-guided intubation, use of intubating laryngeal mask airway, intubation without neuromuscular blocking agents, intubation with neuromuscular blocking agents after testing the ability to ventilate by mask, pre-induction neck scar release under local anesthesia and ketamine or sedation followed by direct laryngoscopy and intubation and video-laryngoscope guided intubation, amongst others. Preparation of the patient includes an explanation of the proposed procedure, sedation, administration of antisialogogues and regional anesthesia of the airway. The various options for intubation of patients with PBC neck, intraoperative concerns and safe extubation are described. Back-up plans, airway rescue strategies and a review of literature on this subject are presented.

Contracture related airway obstruction (CRAO) treated successfully with incisional release

OBJECTIVE

To describe the delayed airway obstruction that can result from anterior cervical burns and report a case of successful decannulation following incisional release and full-thickness skin grafting (FTSG).

METHODS

Case report from a tertiary care academic children's hospital.

RESULTS

Direct laryngoscopy demonstrates a significant improvement in the upper airway immediately following an anterior cervical incisional release. The patient was then able to be decannulated on postoperative day 10.

CONCLUSIONS

Cervical contracture is an important consideration in children with airway obstruction following burns to the upper chest, anterior neck and face, and may be treated successfully with incisional release and FTSG.

Surgical release for intubation purposes in postburn contractures of the neck

Postburn contractures of the neck can cause difficult endotracheal intubation when cervical hyperextension and lifting of the mandible are impaired. alternative techniques to direct laryngoscopy may be hampered by the presence of rigid scar tissue which obscures the mandibular and laryngeal anatomy, or by the presence of microstomia following retraction of scar tissue in facial burns. This report describes our experience with a safe and quick surgical neck release to facilitate endotracheal intubation in such cases. Following release, intubation was established at the first attempt in all cases. Patients who have suffered flame burns to the thorax with an ascending involvement of the neck and mandibular region are particularly prone to develop extreme contractures. Problems with intubation should be anticipated in patients with healed burns of the neck, and equipment for aiding intubation should be on hand. Furthermore, the surgeon must be available during the induction of anaesthesia to perform an emergency neck release if necessary.

Release of burn scar contractures of the neck in paediatric patients

Burn scar contractures of the neck represent a continuing problem for plastic surgeons. A review of 143 neck-release procedures performed at the Cincinnati Shriners Burns Institute documented a high rate of contracture recurrence. This was especially true in those patients who had previously suffered burns to the entire anterior neck. Treatment of this condition with Z-plasties, or releasing incisions with split thickness skin grafts, had a recurrence rate of 81 per cent and 62 per cent, respectively. The use of a neck hyper-extension brace for over 1 year following skin grafting decreased the recurrence rate to 17 per cent. In patients who were not compliant in wearing a brace, the best result was obtained by using a full thickness skin graft in the release site. Contractures resulting from smaller burns were successfully handled by a variety of techniques.