Full-Thickness Oral Mucoperiosteal Defects: Challenges and Opportunities.

Regenerative engineering strategies for the oral mucoperiosteum, as may be needed following surgeries, such as cleft palate repair and tumor resection, are underdeveloped compared with those for maxillofacial bone. However, critical-size tissue defects left to heal by secondary intention can lead to complications, such as infection, fistula formation, scarring, and midface hypoplasia. This review describes current clinical practice for replacing mucoperiosteal tissue, including autografts and allografts. Potentially paradigm-shifting experimental regenerative engineering strategies for mucoperiosteal wound healing, such as hybrid grafts and engineered matrices, are also discussed. Throughout the review, the advantages and disadvantages of each replacement or regeneration strategy are outlined in the context of clinical outcomes, quality of life for the patient, availability of materials, and cost of care. Finally, future directions for research and development in the area of mucoperiosteum repair are proposed, with an emphasis on identifying globally available and affordable solutions for promoting mucoperiosteal regeneration. Impact statement Unassisted oral mucoperiosteal wound healing can lead to severe complications such as infection, fistulae, scarring, and developmental abnormalities. Thus, strategies for promoting wound healing must be considered when mucoperiosteal defects are incident to oral surgery, as in palatoplasty or tumor resection. Emerging mucoperiosteal tissue engineering strategies, described in this study, have the potential to overcome the limitations of current standard-of-care donor tissue grafts. For example, the use of engineered mucoperiosteal biomaterials could circumvent concerns about tissue availability and immunogenicity. Moreover, employment of tissue engineering strategies may improve the equity of oral wound care by increasing global affordability and accessibility of materials.

Rigid Video Laryngoscopy for Intubation in Severe Pierre Robin Sequence: A Retrospective Review.

OBJECTIVES/HYPOTHESIS: The anatomy of children with severe Pierre Robin sequence can present a challenge for direct laryngoscopy and intubation. Advanced techniques including flexible fiberoptic laryngoscopic intubation have been described but require highly specialized skill and equipment. Rigid video laryngoscopy is more accessible but has not been described in this population. STUDY DESIGN: Retrospective cohort study. METHODS: A retrospective review was completed at a tertiary care center of all children between January 2016 and March 2020 with Pierre Robin sequence who underwent a mandibular distraction osteogenesis procedure. Intubation events were collected, and a descriptive analysis was performed. A univariate logistic regression model was applied to direct laryngoscopy and flexible fiberoptic laryngoscopy with rigid video laryngoscopy as a reference. RESULTS: Twenty-five patients were identified with a total of 56 endotracheal events. All patients were successfully intubated. Direct laryngoscopy was successful at first intubation attempt in 47.3% (9/19) of events. Six direct laryngoscopy events required switching to another device. Rigid video laryngoscopy was successful at first intubation attempt in 80.5% (29/36) of events. Two cases required switching to another device. Flexible fiberoptic laryngoscopy was found successful at first intubation attempt in 88.9% (8/9) of events. Direct laryngoscopy was 4 times more likely to fail first intubation attempt when compared to rigid video laryngoscopy (P < .05). There was no significant difference between rigid video laryngoscopy and flexible fiberoptic laryngoscopy for intubation. CONCLUSIONS: For children with Pierre Robin sequence rigid video laryngoscopy should be considered as a first attempt intubation device both in the operating room and for emergent situations. LEVEL OF EVIDENCE: 4 Laryngoscope, 131:1647-1651, 2021.

Development of a preliminary pediatric tracheal growth model from magnetic resonance images.

OBJECTIVES/HYPOTHESIS: To develop a growth model of the minimum cross-sectional area of the normal pediatric trachea with measurements from magnetic resonance images (MRIs) to supplement the clinical criteria used to determine if a child with tracheal stenosis needs surgery. STUDY DESIGN: Retrospective imaging review. METHODS: A total of 81 patients were imaged for a variety of clinical reasons and declared to have normal tracheas fully visible in their T1 magnetic resonance image. Regression analysis was used to identify any contribution that age, gender, and z scores for height and weight have in predicting the minimum cross-sectional area of the trachea. RESULTS: The best-fit model for minimum cross-sectional area is: Area = -0.00451*age(4) + 0.177*age(3) - 2.05*age(2) + 12.6*age + 8.02 (area in mm(2) and age in years). Gender and z scores for height and weight did not provide any additional explanation of variance in tracheal size. CONCLUSIONS: Our study demonstrates the potential to create a growth model of the normal trachea based on cross-sectional area of the trachea using MRIs. Even with the relatively small number of patients used to build it, the model has demonstrated some ability to be used as an objective prediction tool when deciding a treatment path for a patient. With continued development of precise, objective measures to diagnose the severity of the tracheal stenosis, more patients can be given early and accurate prognosis and be treated appropriately.

Pediatric endoscopic airway management with posterior cricoid rib grafting.

OBJECTIVES/HYPOTHESIS: To confirm and extend reported successful treatment of posterior glottic stenosis in pediatric patients using endoscopic laser division of the posterior cricoid plate with augmentation using costal cartilage. STUDY DESIGN: A retrospective chart review and case series. METHODS: Medical records were examined to determine the surgical indications, outcomes, and postoperative complications of this procedure. RESULTS: Twelve patients underwent the procedure, six females and six males, with an average age of 7 years (range, 2-26 years). There were 8/12 (67%) patients successfully decannulated after being tracheostomy dependent. There were no consistent anatomic abnormalities or surgical findings predictive of failure to decannulate. Average hospital stay was 3.6 days (range, 2-9 days). There were no deaths or other major complications; one patient had extrusion. CONCLUSIONS: Endoscopic posterior cricoid grafting is a valuable surgical option for patients with posterior glottic stenosis. The procedure is associated with low morbidity and permits decannulation in the majority of patients.

Complications of otitis media before placement of tympanostomy tubes in children.

OBJECTIVES: To report the incidence of short-term complications from otitis media in children before placement of tympanostomy tubes (TTs) and to compare children treated according to the Agency for Health Care Policy and Research guidelines with those who were treated earlier or later than recommended. DESIGN: Retrospective outcomes review. PATIENTS: Subjects were children aged 10 or younger who had TTs inserted at a tertiary care county hospital from January 1, 1999, to December 31, 2000. Exclusion criteria included prior TT placement, any concurrent head and neck procedure, and craniofacial defects. INTERVENTION: Tympanostomy tube placement. MAIN OUTCOME MEASURES: Any occurrences of otorrhea, tympanic membrane perforation, tinnitus, antibiotic reactions, speech or language delay, febrile seizures, or meningitis before placement of TTs documented in the county hospital records were recorded as complications. Hearing loss was considered separately. RESULTS: Of 147 children who met our criteria, 81 (55.1%) had 1 or more complications from otitis media before placement of TTs. Fifty-five (37.4%) had 2 to 6 complications documented. Adverse reactions to antibiotics were the most common complication, reported in 34 (23.1%). CONCLUSIONS: Most children in this county hospital experienced short-term complications of otitis media before receiving TTs. Even the children treated "on time" according to the guidelines from the Agency for Health Care Policy and Research experienced complications; however, adherence to the guidelines had no significant effect on complications.