The clinical value of peak nasal inspiratory flow, peak oral inspiratory flow, and the nasal patency index.

OBJECTIVES/HYPOTHESIS: The aim of this study was to ascertain the most reliable objective measurement for the assessment of nasal patency by investigating the relationship between peak nasal inspiratory flow, peak oral inspiratory flow, and the nasal patency index in relation to the patient's subjective perception regarding nasal obstruction. STUDY DESIGN: Prospective cohort study. METHODS: This study included 131 volunteers of both genders, aged 18 years or older, with or without nasal symptoms, who were able to give informed consent, completed the study protocol, and could speak and write Dutch fluently. Peak nasal inspiratory flow and peak oral inspiratory flow were performed and nasal patency index was computed. The results were evaluated and compared with the subjective perception of nasal passage, using the validated Nasal Obstruction Symptom Evaluation scale and visual analog scale for nasal passage. RESULTS: Our study showed that peak nasal inspiratory flow, nasal patency index and nasal patency visual analog scale correlate with the Nasal Obstruction Symptom Evaluation scale in contrast to peak oral inspiratory flow. Peak nasal inspiratory flow and nasal patency index also showed significant association with the Nasal Obstruction Symptom Evaluation scale after adjustment for confounders. CONCLUSIONS: Peak nasal inspiratory flow is the most reliable method for the assessment of nasal patency. It is quick, inexpensive, and easy to perform, and correlates significantly with the subjective feeling of nasal obstruction. There is no clinical need to measure peak oral inspiratory flow or to calculate the nasal patency index in the evaluation of nasal patency. LEVEL OF EVIDENCE: 4

Suspension suture techniques in nasal valve surgery.

Impaired nasal breathing or collapse of the lateral side wall of the nasal valve region during inspiration is a frequently encountered symptom. In general, this is caused by a cross-sectional area that is too small, a weak lateral side wall, or a combination of both. Over the years, many techniques have been described to improve the nasal patency in these patients with the use of nasal grafts, repositioning techniques, devices, or suspension suture techniques. This article presents a systematic overview of different suspension suture techniques in nasal valve surgery.

Irradiated homologous rib grafts in nasal reconstruction.

OBJECTIVE: To assess the long-term efficacy of irradiated homologous rib grafts (IHRGs) for both augmentation and support function in rhinoplasty in general and for specific recipient sites within the nose. DESIGN: A retrospective study was conducted at an academic medical center to evaluate the loss of volume and support function of IHRGs in 9 specific recipient sites in the nose. RESULTS: We studied 66 patients, with a total of 177 IHRGs, dating back 9 years, with an average follow-up of 51 months. The rate of resorption increased with duration of follow-up. Complete resorption was found in 1 IHRG, and moderate resorption was observed in 55 IHRGs (31%). Resorption was characterized by a loss of support function rather than a loss of volume. Moderate resorption had a negative clinical outcome for shield grafts only. CONCLUSIONS: Irradiated homologous rib grafts were safe to use in rhinoplasty. In cases requiring a shield graft, IHRGs should be avoided.

Nasal septal abscess in children: reconstruction with autologous cartilage grafts on polydioxanone plate.

OBJECTIVE: To assess outgrowth and aesthetics of the nose in children after reconstruction of the cartilaginous nasal septum with autologous cartilage grafts on polydioxanone plate. DESIGN: Prospective nonrandomized case series. SETTING: University hospital. PATIENTS: Six patients (5 boys and 1 girl), aged 3 to 11 years, with nasal septal abscess. INTERVENTION: The nasal septa of 6 children with a history of nasal septal abscess and partial or complete destruction of nasal septal cartilage were reconstructed with autologous cartilage grafts of the auricle or rib fixed on polydioxanone plate. MAIN OUTCOME MEASURES: Nasal outgrowth was measured by the length of the nose and by the amount of nasal tip projection and was compared with standardized growth curves. Aesthetic outcome variables included nasolabial angle, columellar retraction, and development of saddle nose deformity and were classified as normal, mild, or severe. RESULTS: The duration of follow-up ranged from 10 to 68 months (mean follow-up, 38 months). Four children had complete loss of the cartilaginous septum. Areas 1 and 2 (caudal parts) had been destroyed in 2 children. Auricular cartilage was used in 5 children; costal cartilage was needed in 1 child. Compared with standardized growth curves, the length of the nose and the amount of nasal tip projection were within 1 SD in all children. None of the children developed saddle nose deformity. One child had mild columellar retraction; 3 children had mild overrotation of the nasal tip. CONCLUSION: Total reconstruction of abscess-induced destruction of nasal septal cartilage with autologous cartilage grafts fixed on polydioxanone plate has, so far, resulted in normal development of the nose during follow-up, without expected aesthetic problems.

Lateral crus pull-up: a method for collapse of the external nasal valve.

Collapse of the nasal vestibule during inspiration is a frequently encountered symptom, often caused by weak or medially displaced lateral crura in the lower lateral cartilages. Numerous techniques are available for lateralizing and strengthening the lateral crura using cartilage grafts or suture techniques. In most cases, they involve an external rhinoplasty approach or additional incisions. An elegant endonasal method for widening and strengthening the lateral component of the nasal valve area is described herein. The basis of the procedure is a permanent submucosal spanning suture between the piriform aperture and the distal part of the lower lateral cartilage. The effect of this technique is 2-fold. First, it provides superolateral rotation of the lateral crura, increasing the cross-sectional area, and second, the spanning suture provides additional support for the lateral wall of the nasal vestibule.

Objective computerized determination of the minimum cross-sectional area of the nasal passage on computed tomography.

OBJECTIVES/HYPOTHESIS: Current methods that measure cross-sectional areas of the nasal passage on computed tomography (CT) do not determine the minimum cross-sectional area that may be an important factor in nasal airway resistance. Objective measurement of the dimensions of the nasal passage may help in the diagnosis, as well as the choice and evaluation of surgical treatment for upper airway insufficiencies. STUDY DESIGN: Retrospective and clinical study. METHODS: Software was developed that automatically calculates the minimum cross-sectional area of the nasal passage on CT. RESULTS: Evaluation shows that the minimization algorithm in the software reliably calculates the position and orientation of the oblique plane on which the minimum cross-section lies. CONCLUSION: The developed method may be used for objective and observer-independent evaluation of surgical treatment options.