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The authors propose a novel flap for rhinoplasty: the supratip cross flap (SCF). It is a simple and effective method for avoiding and correcting alar contour deformities and external nasal valve (ENV) issues in rhinoplasty without grafts. In addition to its benefit for supratip break, the flap also allows a smooth and natural transition between the nasal dorsum and the nasal tip complex.

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Nasal dilators were created to expand the nasal valve area. The aim of this systematic review was to verify physiological parameters associated to running performance with the use of nasal dilators. This study was registered in PROSPERO (CRD42021225795). According to the PICOS framework studies were included: Population: healthy subjects; Intervention: nasal dilators; Comparison: control group, placebo, minimal intervention, health education or other intervention; Outcomes: cardiorespiratory parameters and subjective perceptions; Study: randomized controlled trials, repeated measures or within-subjects design. The databases searched were MEDLINE, EMBASE, CENTRAL The Cochrane Library, CINAHL, SPORTDiscus, Web of Science, PEDro and Scopus. The descriptors "Running", "Nasal Dilator", "Randomized Controlled Trial", and synonyms were used. The risk of bias was assessed using the PEDro scale. Random effects Der Simonian and Laird model were used. The assessment of the certainty of the evidence was carried out using the GRADE approach. Eleven articles were included. There was a difference in favour of the nasal dilator when compared to placebo for maximal oxygen uptake and rating of perceived exertion. The certainty of the evidence was very low. Future studies will probably have an impact on estimation of the effect.

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BACKGROUND: Numerous studies have shown that the external nasal dilator (END) increases the cross sectional area of the nasal valve, thereby reducing nasal resistance, transnasal inspiratory pressure, stabilizing the lateral nasal vestibule, and preventing its collapse during final inhalation. OBJECTIVES: Our objective was to carry out a systematic review of the literature and meta-analysis on the effects of the END during physical exercise. METHODS: After selecting articles in the PubMed, Cochrane Library and EMBASE databases, 624 studies were identified. However, after applying the inclusion and exclusion criteria, 19 articles were considered eligible for review. RESULTS: Those studies included in the meta-analysis, the maximal oxygen uptake (VO2max.) outcome was assessed in 168 participants in which no statistically significant difference was found, MD (95% CI) = 0.86 [- 0.43, 2.15], p = 0.19, and I2 = 0%. The heart rate (HR) outcome was assessed in 138 participants in which no statistically significant difference was found, MD (95% CI) = 0.02 [- 3.19, 3.22], p = 0.99, and I2 = 0%. The rating of perceived exertion (RPE) outcome was assessed in 92 participants in which no statistically significant difference was found, MD (95% CI) = - 0.12 [- 0.52, 0.28], p = 0.56, and I2 = 27%. CONCLUSIONS: The external nasal dilator strip showed no improvement in VO2max., HR and RPE outcomes in healthy individuals during exercise.

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Resumen La obstrucción nasal es una de las causas más frecuentes de consulta otorrinolaringológica general. Diversas estructuras juegan un rol en la mantención de una adecuada función respiratoria nasal, incluyendo el tabique, los cornetes, las paredes laterales y las alas nasales. La cirugía del tabique y de los cornetes inferiores son los procedimientos más comúnmente realizados y aunque son efectivos en un gran porcentaje de los casos, en ocasiones se deben intervenir otras estructuras nasales para corregir adecuadamente la obstrucción. La cirugía con fines primariamente funcionales de las válvulas nasales externa e interna, de la punta y/o de la pirámide ósea se ha denominado "rinoplastía funcional". Dada la importancia de estas estructuras para la recuperación de una adecuada permeabilidad nasal estática y dinámica, el diagnóstico y manejo quirúrgico de estas condiciones debe ser de dominio del otorrinolaringólogo.

Abstract Nasal obstruction is one of the most frequent complaints in general otorhinolaryngology practice. Different structures have a role in maintaining an adequate nasal breathing function, including the septum, turbinates, lateral sidewalls and nasal alae. Surgery of the nasal septum and inferior turbinates are the most commonly performed procedures and, although effective in most cases, occasionally other nasal structures must be intervened to correctly address the sites of obstruction. The term "functional rhinoplasty" has been coined for surgery of the external and internal nasal valves, nasal tip and/or bony pyramid, with primarily functional objectives. Given the importance of these structures for restoring an adequate static and dynamic nasal patency, diagnosis and management of these conditions must be dominion of the otorhinolaryngologist.

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La rinoplastia es una de las cirugías estéticas más realizadas en el mundo y entre las complicaciones más frecuentes está el colapso valvular por la excesiva resección del cartílago alar. La parálisis facial, así como el envejecimiento pueden colapsar la pared lateral en inspiración por disfunción del músculo nasal, al provocar debilitamiento del tejido fibroalveolar de la pared lateral nasal, existiendo también causas genéticas que producen colapso valvular. Actualmente se practican diversas técnicas para mejorar el colapso valvular y ninguna es cien por ciento efectiva, la mayor parte se centran en corregir la propia válvula nasal o el cartílago triangular, lo que indica que se fijan en un solo factor y no en la etiología multifactorial que la produce. Este estudio revisa la evidencia clínica que guía a un diagnóstico correcto y al manejo efectivo de la disfunción de la válvula nasal externa, mediante el uso de diversas técnicas que se emplean actualmente para perfeccionar el colapso valvular nasal.

Rhinoplasty is one of the most frequent cosmetic surgeries in the world and among the most common complications is valve collapse due to excessive resection of the alar cartilage. Facial paralysis, as well as aging, can collapse the lateral wall in inspiration due to dysfunction of the nasal muscle, causing weakening of the fibroalveolar tissue of the nasal lateral wall, and there are also genetic causes that produce valve collapse. Currently, various techniques are practiced to improve valve collapse and none are one hundred percent effective, most of them focus on correcting the nasal valve itself or the triangular cartilage, which indicates that they are fixed on a single factor and not on multifactorial etiology that produces it. This study reviews the clinical evidence that guides a correct diagnosis and effective management of external nasal valve dysfunction, using various techniques that are currently used to improve nasal valve collapse.

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BACKGROUND: Our aim in this study was to determine the angle of the internal nasal valve in Mexican patients with the "mestizo nose" feature and without nasal obstructive symptoms. The work was prospective, comparative, and observational in nature and included patients >14 years of age who were seen in the Otolaryngology Department at the Los Angeles Lomas Hospital between April and May 2016. METHODS: The angle of the internal nasal valve was measured in 30 patients without obstructive symptoms. Endoscopic examination was performed with a 0° endoscope framed with tape at a 13-mm distance from the endoscope's tip, and digital photographs of the internal nasal valve were taken. The measurement of the angle of the internal nasal valve was made in sexagesimal degrees using Golden Ratio v3.1 (2012) software. Statistical analysis was performed using Excel v15.13.3. RESULTS: The angles of the internal nasal valve of the patients were (mean ± standard deviation) 24.07 ± 4.8° for the right nasal cavity and 25.07 ± 5.0° for the left nasal cavity, wider than the angle reported in the normal Caucasian nose established in the literature. CONCLUSIONS: According to our results, the Mexican-Hispanic mestizo nose has a wider angle in the internal nasal valve than that considered normal in the literature (10°-15°). We believe it is necessary to undertake a second study and add an airflow resistance measurement with a rhinomanometry procedure so we can compare the results with those in the Caucasian population.

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RESUMEN La obstrucción dependiente de la vía aérea nasal representa un gran impacto en la calidad de vida de los pacientes. Las causas de ésta son múltiples, donde aquellas de tipo estructural son las que requieren frecuentemente cirugía. La obstrucción nasal debido a la disfunción de la válvula nasal puede ser olvidada como única causa de una obstrucción nasal. La decisión sobre qué técnica quirúrgica utilizar para solucionar una insuficiencia valvular es compleja y muchas veces la bibliografía utiliza conceptos anatómicos muy variados que no ayudan a seleccionar una técnica en particular. Se realizó una revisión bibliográfica del tema destacando anatomía, diagnóstico y tratamiento; las técnicas quirúrgicas más frecuentemente utilizadas son descritas.

ABSTRACT Nasal airway obstruction represents a major impact on patients' quality of life. The causes are multiple, where those of a structural type, frequently require surgery. Nasal obstruction due to nasal valve dysfunction may be overlooked as a cause of nasal obstruction. The decision about which surgical technique to use in order to solve a valvular insufficiency is complex and often the literature uses diverse anatomical concepts that do not help to select a particular technique. A literature review of the subject was carried out, highlighting anatomy, diagnosis and treatment; The most frequently used surgical techniques are described.

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We used a computational fluid dynamics (CFD) model to study the inspiratory airflow profiles of patients with anterior nasal cavity stenosis who underwent curative surgery, by comparing pre- and postoperative airflow characteristics. Twenty patients with severe anterior nasal cavity stenosis, including one case of bilateral stenosis, underwent computed tomography (CT) scans for CFD modelling. The pre- and postoperative airflow characteristics of the nasal cavity were simulated and analyzed. The narrowest area of the nasal cavity in all 20 patients was located within the nasal valve area, and the mean cross-sectional area increased from 0.39 cm2 preoperative to 0.78 cm2 postoperative (P<0.01). Meanwhile, the mean airflow velocity in the nasal valve area decreased from 6.19 m/s to 2.88 m/s (P<0.01). Surgical restoration of the nasal symmetry in the bilateral nasal cavity reduced nasal resistance in the narrow sides from 0.24 Pa.s/mL to 0.11 Pa.s/mL (P<0.01). Numerical simulation of the nasal cavity in patients with anterior nasal cavity stenosis revealed structural changes and the resultant patterns of nasal airflow. Surgery achieved balanced bilateral nasal ventilation and decreased nasal resistance in the narrow region of the nasal cavity. The correction of nasal valve stenosis is not only indispensable for reducing nasal resistance, but also the key to obtain satisfactory curative effect.

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Introducción: La dificultad en el adecuado manejo del dorso nasal radica en su pérdida de soporte, razón por la cual el injerto espaciador (spreader graft) ocupa un lugar destacado en rinoplastía, proveyendo amplitud al techo dorsal, a la vez que incrementa el ángulo de la válvula nasal interna, generando una optimización en los resultados estéticos y funcionales de la cirugía nasal. El autoespaciador mantiene estos mismos principios, utilizando el propio cartílago lateral superior. Objetivo: Describir la técnica del autoespaciador, beneficios y la experiencia de los autores en 80 casos de pacientes sometidos a rinoplastía por abordaje abierto y cerrado. Material y método: Trabajo retrospectivo descriptivo, de los pacientes intervenidos quirúrgicamente por autor principal utilizando la técnica señalada. Resultados: Casuística de 80 pacientes, de los cuales 70% sexo femenino, siendo el promedio de edad 30 años. Abordaje abierto en el 50%. No se reportaron complicaciones intraoperatorias, no existieron obstrucciones anatómicas ni funcionales a nivel de la válvula nasal interna, así como tampoco deformaciones estéticas en "V" invertida tras un seguimiento reportando entre 6 y 24 meses. Conclusión: El autoespaciador al igual que el injerto espaciador clásico, previene problemas funcionales manteniendo el ancho del dorso nasal y optimizando el adecuado funcionamiento de la válvula interna, al tiempo que incrementa el éxito estético de la cirugía, pareciendo a los autores, más simple y fisiológico respecto a su predecesor, el injerto espaciador clásico.

Introduction: The difficulty in the proper handling of the nasal dorsum is its loss of support, hence the spreader graft plays an important role in rhinoplasty, providing width to the dorsal ceiling, while increasing the angle of internal nasal valve, generating an optimization in the aesthetic and functional results of nasal surgery. The autospreader maintains these same principles, using the upper lateral cartilage itself. Aim: To describe the technique of autospreader, benefits and the experience of the authors in a series of patients undergoing open and closed rhinoplasty approach. Material and method: A retrospective descriptive study of patients operated on by primary author using the indicated technique. Results: Casuistry of 80 patients, of whom 70% female, average age being 30 years. Open approach 50%. No intraoperative complications were reported, there were no anatomical or functional obstruction at the level of internal nasal valve, neither aesthetic deformities like inverted "V" after a follow reporting between 6 and 24 months. Conclusions: The autospreader, like the classic spreader graft prevents functional problems maintaining the width of the nasal dorsum and optimizing the proper functioning of the internal valve, while increasing the aesthetic success of surgery, seeming to authors more simple and physiological over its predecessor, the spreader graft.

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Our goal was to revise the literature about external nasal dilators (ENDs) as to their definition, history, and current uses. We reviewed journals in the PubMed and MEDLINE databases. The current uses hereby presented and discussed are physical exercise, nasal congestion and sleep, snoring, pregnancy, cancer, and healthy individuals. Numerous studies have shown that ENDs increase the cross-sectional area of the nasal valve, reducing nasal resistance and transnasal inspiratory pressure and stabilizing the lateral nasal vestibule, avoiding its collapse during final inspiration. These effects also facilitate breathing and are beneficial to patients with nasal obstruction. Furthermore, END use is simple, noninvasive, painless, affordable, and bears minimum risk to the user. Most studies have limited sample size and are mainly focused on physical exercise. In conclusion, ENDs seem useful, so further studies involving potential effects on the performance of physical tests and improvements in sleep quality are necessary, especially in children and teenagers.

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La estenosis de la válvula nasal aparece como una complicación frecuente de rinoplastfa o traumatismo nasal. Existen diferentes técnicas para corregir el colapso de la válvula nasal; generalmente se utilizan injertos de tejido, que en algunas ocasiones son insuficientes para resolverla alteración y mejorar la función respiratoria. La válvula nasal funciona en base a la resistencia de la ley Starling, que consiste en un tubo semirrígido con un segmento flexible; cuando la presión inspirada excede un nivel crítico, éste se colapsa y provoca la alteración en su fisiología; por tanto, es necesario cierto grado de rigidez en el componente lateral nasal para evitar el colapso durante la inspiración. Cuando se ve afectado su funcionamiento causa frecuentemente obstrucción nasal.

Nasal valve stenosis commonly presents as a postoperative complication of rhinoplasty or facial trauma. Various techniques have been reported to correct nasal valve stenosis through the use of methods that support the nasal valve with cartilage, rib graft, although these tissues are not useful in some cases to improve the nasal breathing. The nasal valve functions as the law Starling resistor, which is a semirigid tube with a flexible segment, when the inspired partial pressure exceeds a critical level, it collapses and causes nasal obstruction, and therefore need some degree of rigidity in nasal lateral component to avoid collapse during inspiration. When the nasal valve is affected frequently causes nasal obstruction.

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A porção anterior das cavidades nasais, da narina à válvula nasal (VN), é a região de maior resistência nasal ao fluxo aerífero, de suma importância para a fisiologia nasal. Na literatura existem terminologias diferentes para se referir às mesmas estruturas anatômicas e, ainda, o mesmo termo se referindo a estruturas anatômicas diferentes. OBJETIVO: Realizamos este trabalho com o objetivo de revisarmos o funcionamento da VN e definirmos com mais clareza estruturas anatômicas da porção anterior das cavidades nasais, principalmente a região da VN. CONCLUSÃO: Existe controvérsia na literatura quanto à nomenclatura das estruturas da VN. Neste trabalho definimos VN como uma estrutura tridimensional compreendida anteriormente pelo ostium internum e posteriormente pelo isthmus nasi.

The anterior portion of the nasal cavities, from the nostril to the nasal valve (NV), is the place of highest nasal resistance to airflow, paramount to nasal physiology. There are different terminologies for the same anatomic structures in the literature. AIM: The aim of this paper was to study the NV function and define clearly the structures of the anterior portion of the nasal cavities, mainly the region of the NV. CONCLUSION: Internum ostium is the anterior segment and isthmus nasi is the posterior segment of the NV region.

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