Evaluation and Management of Lateral Wall Insufficiency.

Successful treatment of nasal airway obstruction depends on accurate diagnosis of the underlying etiology. Lateral wall insufficiency (LWI) is a common cause of obstructed nasal breathing and should be recognized and treated accordingly by the rhinoplasty surgeon. LWI refers to dynamic collapse of the lateral nasal sidewalls at the internal (zone 1) and external (zone 2) nasal valves. This article serves as an overview of the important aspects in evaluation and management of LWI.

Postoperative Pain and Perioperative Antibiotic Management in Functional Rhinoplasty.

Post-rhinoplasty pain control should use a multimodal regimen. Evidence suggests decreasing routine prescriptions of narcotics is reasonable for most individuals, and acetaminophen and nonsteroidal antiinflammatory drug combinations may be equivalent to as-needed opioids for postsurgical pain management. Preoperative pain counseling is important to set post-rhinoplasty pain expectations and reduce opioid use. A single intravenous dose of prophylactic antibiotics before incision is sufficient for most cases of functional rhinoplasty. Additional considerations are given to complex revision cases, use of allogenic grafts or implants, external osteotomies, or patients with immunosuppression or at risk of endocarditis.

Surgical complications in combined rhinoplasty and endoscopic sinus surgery.

KEY POINTS: Complications in combined surgery are equivalent to ESS but are higher than rhinoplasty alone. The most common complications are pneumonia, stroke, and epistaxis. Rhinoplasty surgeries with graft use have a higher risk of complications.

Temporoparietal Fascia Graft and Polydioxanone Plate Repair of Nasal Septal Perforation.

BACKGROUND: Surgical repair of septal perforations has been historically cumbersome. Recently described techniques utilizing interposition grafting with polydioxanone (PDS) plates wrapped in a temporoparietal fascia (TPF) graft have reported successful closure in 90% to 100% of cases. Our objective is to expand the investigation into the use of interposition grafts of polydioxanone plates combined with a temporoparietal fascia graft for nasal septal perforation repair. METHODS: Retrospective review of the medical record was performed for all septal perforation repairs using the TPF-PDS plate interposition graft technique from August 1, 2017 to March 1, 2021 at the University of Iowa. Minimum post-operative follow-up was 1 month. RESULTS: Our series included 31 patients with symptomatic nasal septal perforations. Thirteen patients underwent open while 18 patients underwent endonasal graft placement. The mean perforation size was 1.49 cm2. The mean post-operative follow-up was 11.5 months. CONCLUSIONS: Repair of symptomatic nasal septal perforations using an interposition graft of polydioxanone plate wrapped in temporoparietal fascia demonstrated an overall success rate of 90%.

Quantifying the Subjective Experience of Nasal Obstruction: A Review.

Nasal obstruction is an exceedingly common problem and challenging to treat due to its multifactorial etiology. Therefore, measuring treatment outcomes of nasal obstruction can be equally complex yet vital to appropriately assessing symptom improvement or resolution. Both physiologic and anatomic assessments of the nasal airway exist in addition to validated patient-reported outcome measures (PROMs), which objectify subjective nasal obstruction and sinonasal symptoms. Correlation between objective and subjective treatment outcome measures is controversial with clinical guidelines favoring the use of PROMs for surgical treatment of nasal obstruction. In this review, the anatomic and physiologic measurements of the nasal airway and validated PROMs will be discussed, as well as the rationale for implementing PROMs into the rhinoplasty surgeon's practice.

Tissue Engineering the Pinna: Comparison and Characterization of Human Decellularized Auricular Biological Scaffolds.

Decellularization is one of the promising techniques in tissue engineering used to create a biological scaffold for subsequent repopulation with the patient's own cells. This study aims to compare two different decellularization protocols to optimize the process of auricle decellularization by assessing and characterizing the decellularization effects on human auricular cartilage. Herein, 12 pairs (8 females, 4 males) of freshly frozen adult human cadaveric auricles were de-epithelialized and defatted leaving only the cartilaginous framework. An auricle from each pair was randomly assigned to either protocol A (latrunculin B-based decellularization) or protocol B (trypsin-based decellularization). Gross examination of the generated scaffolds demonstrated preservation of the auricles' contours and a change in color from pinkish-white to yellowish-white. Hematoxylin and eosin staining demonstrated empty cartilaginous lacunae in both study groups, which confirms the depletion of cells. However, there was greater preservation of the extracellular matrix in auricles decellularized with protocol A as compared to protocol B. Comparing protocol A to protocol B, Masson's trichrome and Safranin-O stains also demonstrated noticeable preservation of collagen and proteoglycans, respectively. Additionally, scanning electron micrographs demonstrated preservation of the cartilaginous microtopography in both study groups. Biomechanical testing demonstrated a substantial decrease in Young's modulus after decellularization using protocol B (1.3 MPa), albeit not significant (P-value > 0.05) when compared to Young's modulus prior to decellularization (2.6 MPa) or after decellularization with protocol A (2.7 MPa). A DNA quantification assay demonstrated a significant drop (P-value < 0.05) in the DNA content after decellularization with protocol A (111.0 ng/mg) and protocol B (127.6 ng/mg) in comparison to before decellularization (865.3 ng/mg). Overall, this study demonstrated effective decellularization of human auricular cartilage, and it is concluded that protocol A provided greater preservation of the extracellular matrix and biomechanical characteristics. These findings warrant proceeding with the assessment of inflammation and cell migration in a decellularized scaffold using an animal model.