Incidence of Sinusitis Postoperatively in Orthognathic Surgery: A Systematic Review and Meta-Analysis.

Maxillary osteotomies as a component of orthognathic surgery disrupt the normal anatomy and function of the sinus. The osteotomy with advancement of the inferior component of the sinus leaves a bony and mucosal opening in the sinus. Immediately after surgery, nasal drainage is impeded because of intranasal swelling. Acute and chronic maxillary sinusitis would be expected; however, its incidence as an expected complication is not well documented. A systematic review and meta-analysis was completed using PubMed to determine the incidence of sinusitis after maxillary orthognathic surgery. Studies were reviewed by two authors, and incidence data were extracted. Two hundred six articles were identified with 24 meeting the criteria for analysis. The incidence of sinusitis was based on 4213 participants who had undergone orthognathic surgery. Twenty-three studies reported a total number of sinusitis cases, and the results demonstrated a pooled incidence of 3.3% (95% confidence interval: 1.77, 6.06). One study did not report a total number of cases but reported chronic sinusitis survey-duration-based and Lund-Mackay scores. These scores, respectively, worsened from 7.6 to 14.8 and from 1.58 to 2.90 postoperatively. Despite the variability of maxillary surgery, the surgical technique, and the postoperative management, the incidence is low but sinusitis does occur. Prospective studies with validated questionnaires within the context of a specific protocol may further elucidate the causality of sinusitis. Further, patients with sinonasal symptoms postsurgery should be encouraged to consult with an otolaryngologist to ensure prompt treatment.

Voice Outcomes After Bariatric Surgery: A Systematic Review.

OBJECTIVE: Bariatric surgery has been documented to improve comorbidities associated with obesity. Obesity can cause deposition of excess adipose tissue, narrowing of the vocal tract, and decreased lung capacity contributing to reduced vocal quality and increased vocal effort. Limited information is available regarding the impact of bariatric surgery on voice outcomes. This review seeks to examine the role of bariatric surgery on voice outcomes. STUDY DESIGN: Systematic review. METHODS: A systematic review was completed using PubMed and Embase for measures of vocal change before and after bariatric surgery. Studies were reviewed by three authors, and data related to acoustic, aerodynamic, auditory-perceptual, and patient-reported outcome measures were extracted. RESULTS: Forty-nine abstracts were identified with seven meeting criteria for analysis. Voice outcomes pre and postbariatric surgery were measured across 122 individuals. Results revealed increased fundamental frequency (F0) and increased maximum phonation time (MPT) during sustained vowel productions. Correlation coefficients for MPT for /a/ were -0.683 and -0.725 for F0, respectively, indicating a strong negative correlation between body mass index and MPT and F0. Trends toward improved auditory-perceptual ratings and improved patient-reported outcome measures were also noted. However, studies were limited by restricted patient demographics and limited use of standardized and/or comprehensive evaluation techniques. CONCLUSION: Weight loss associated with bariatric surgery can result in improved voice outcomes; however, the mechanism by which it helps is unclear. To better understand this, otolaryngologists and speech-language pathologists may consider advocating for pre- and postsurgery voice evaluation in patients undergoing bariatric surgery.

Anesthesia considerations during management of airway stenosis: A systematic review.

OBJECTIVE: To determine the efficacy of ventilatory techniques by evaluating prevalence of technique failure and intraoperative hypoxia during endoscopic management of airway stenosis. DATA SOURCES: A systematic review was conducted using PubMed and Embase for anesthesia techniques in endoscopic management of airway stenosis. REVIEW METHODS: The primary outcome measured was reports of partial and complete technique failure. The secondary outcome measured was intraoperative hypoxia. RESULTS: We identified 7704 abstracts with 17 meeting criteria for analysis. The reported partial and complete ventilatory technique failures were: 0 % Evone Flow-Controlled Ventilation with Tritube endotracheal tube, 0 % laryngeal mask airway, 0 % nonocclusive balloon dilator, 4.76 % spontaneous respiration using intravenous anesthesia and Hi-flow nasal oxygen, and 30.24 % jet ventilation. The reported rate of intraoperative hypoxia was: 0 % Evone Flow-Controlled Ventilation with Tritube endotracheal tube, 0 % spontaneous respiration using intravenous anesthesia and Hi-flow nasal oxygen, 2.18 % jet ventilation, 3.57 % laryngeal mask airway, and 5 % nonocclusive balloon dilator. CONCLUSION: Evone Flow-Controlled Ventilation with Tritube endotracheal tube had the lowest risk of technique failure and intraoperative hypoxia. Nonocclusive balloon dilator and laryngeal mask airway were also favorable techniques for ventilation. Jet ventilation showed a lower rate of intraoperative hypoxia, but a higher rate of failure. Newer techniques, such as Evone Flow-Controlled Ventilation with Tritube, nonocclusive balloon dilator and spontaneous respiration using intravenous anesthesia and Hi-flow nasal oxygen, may offer promise compared to older techniques like jet ventilation; however, larger studies with more uniform data are needed to determine their efficacy.