Percepção tátil e visual no aumento de radix com cartilagem fragmentada livre na rinoplastia / Tactile and visual perception in radix augmentation with free fragmented cartilage in rhinoplasty

Introdução: A correção da relação radix dorso nasal é realizada há vários anos utilizando as mais variadas técnicas como enxerto de cartilagem auricular, septal ou costal, preenchimento com ácido hialurônico, uso de fáscia e enxertos e uso de cartilagem picada em cubo, silicone e ácido hialurônico. O uso de cartilagem fragmentada é descrito na literatura e tem ganhado adeptos nos últimos anos, pela facilidade em ser realizado. O objetivo neste estudo é descrever nossa experiência com a utilização do enxerto de cartilagem fragmentado no aumento do radix comparando a percepção visual e tátil do paciente e sua satisfação. Método: Estudo observacional em pacientes submetidos a rinoplastia no período de janeiro 2018 a junho de 2022, em cirurgias nas quais ocorreu o aumento de radix com o uso de enxerto de cartilagem picada. Resultados: Dos 47 pacientes, a maioria era do sexo feminino (35, 74,4%), com média de idade de 34,6 anos (18-44). Quanto ao tipo de pele, Fitzpatrick tipo 3 (n=28, 59,5%) foi o principal, sendo encontrado frequentemente pacientes com pele de média espessura (n=23, 48,9%). Complicações presentes foram infecção (1 caso), migração de cartilagem picada (3 casos), e reabsorção parcial (1 caso). Na avaliação da percepção tátil 42 pacientes (89,3%) percebiam, à palpação, as proeminências cartilaginosas e na visual apenas 2 (4%). A satisfação foi elevada em 45 (96%) pacientes. Conclusão: A cartilagem picada livre pode ser utilizada na região do radix com resultados satisfatórios.

Introduction: Correction of the nasal radix dorsum relationship has been carried out for several years using the most varied techniques such as auricular, septal, or costal cartilage grafts, filling with hyaluronic acid, use of fascia and grafts and the use of diced cartilage, silicone, and hyaluronic acid. The use of fragmented cartilage is described in the literature and has gained popularity in recent years, due to its ease of use. The objective of this study is to describe our experience with the use of fragmented cartilage graft in radix augmentation, comparing the patient's visual and tactile perception and satisfaction. Method: Observational study in patients undergoing rhinoplasty from January 2018 to June 2022, in surgeries in which the radix was increased with the use of minced cartilage graft. Results: Of the 47 patients, the majority were female (35, 74.4%), with a mean age of 34.6 years (18-44). As for skin type, Fitzpatrick type 3 (n=28, 59.5%) was the main one, with patients with medium-thickness skin being frequently found (n=23, 48.9%). Complications present were infection (1 case), migration of chopped cartilage (3 cases), and partial resorption (1 case). In the assessment of tactile perception, 42 patients (89.3%) perceived cartilaginous prominences on palpation and only 2 (4%) visually. Satisfaction was high in 45 (96%) patients. Conclusion: Free minced cartilage can be used in the radix region with satisfactory results.

Reconstrução de terço distal do nariz: série de casos e revisão de literatura / Reconstruction of the distal third of the nose: case series and literature review

Introdução: O nariz apresenta grande importância estética e funcional, com alta incidência de lesões malignas. Existem várias técnicas de reconstrução do terço distal do nariz, não havendo uma indicação universal; irá depender das características da lesão. As opções cirúrgicas variam entre enxerto de pele, retalhos locais, regionais e microcirúrgicos. O objetivo é apresentar uma série de casos de reconstrução de terço distal do nariz com diferentes técnicas cirúrgicas, discutindo as peculiaridades e os resultados obtidos. Método: Trata-se de estudo retrospectivo realizado no Hospital do Servidor Público Estadual de São Paulo (HSPE), avaliando uma série de oito pacientes com diagnóstico de câncer de pele não melanoma localizados em terço distal de nariz e que foram submetidos a reconstrução pela equipe de Cirurgia Plástica. Resultados: Foram obtidos resultados satisfatórios para todos os pacientes submetidos a reconstrução distal do nariz, tendo sido utilizadas técnicas de enxerto de pele total (n=1) e retalhos locais (n=7), tais como o retalho bilobado, nasogeniano, dorsal do nariz, frontal paramediano, e transposição nasolabial. Conclusão: A reconstrução de defeitos do terço distal do nariz é desafiadora e com grande variabilidade técnica. Deve-se realizar avaliação criteriosa do paciente e da lesão, avaliar riscos e benefícios e compartilhar a decisão com o paciente.

Introduction: The nose has great aesthetic and functional importance, with a high incidence of malignant lesions. There are several techniques for reconstructing the distal third of the nose, but there is no universal indication; will depend on the characteristics of the injury. Surgical options vary between skin grafts and local, regional, and microsurgical flaps. The objective is to present a series of cases of reconstruction of the distal third of the nose using different surgical techniques, discussing the peculiarities and the results obtained. Method: This is a retrospective study carried out at the Hospital do Servidor Público Estadual de São Paulo (HSPE), evaluating a series of eight patients diagnosed with non-melanoma skin cancer located in the distal third of the nose and who underwent reconstruction by the team of Plastic Surgery. Results: Satisfactory results were obtained for all patients undergoing distal nose reconstruction, using total skin graft techniques (n=1) and local flaps (n=7), such as the bilobed, nasolabial, and dorsal nose flap. nose, paramedian frontal, and nasolabial transposition. Conclusion: Reconstruction of defects in the distal third of the nose is challenging and involves great technical variability. A careful assessment of the patient and the injury must be carried out, risks and benefits assessed and the decision shared with the patient.

Avaliação do modo respiratório por meio da termografia: um estudo piloto / Breathing mode assessment with thermography: a pilot study

RESUMO Objetivo Apresentar um método de análise do modo respiratório por meio da termografia infravermelha. Método Estudo transversal exploratório de 38 imagens térmicas que representavam o momento da inspiração e da expiração durante a respiração nasal e durante a simulação da respiração oral de quatro voluntárias respiradoras nasais sem queixas respiratórias. Para a extração da temperatura das regiões de interesse (nariz e boca) foram utilizadas três formas de seleção distintas de dados (linha, retângulo e elipse) e três medidas de temperatura (mínima, média e máxima) por meio do software FLIR Tools®. Resultados Dentre as três formas de seleção houve maior variabilidade nas medidas obtidas pela linha, revelando limitações nessa medida. Não houve diferenças entre as medidas do retângulo e elipse, mostrando que ambas as formas de seleção apresentam resultados semelhantes para a extração das temperaturas. Na comparação entre as temperaturas do nariz e da boca na inspiração e expiração, os resultados indicaram que houve diferença com relevância estatística em todas as medidas realizadas, exceto para as medidas de temperatura média da inspiração, usando o retângulo e a elipse. Percebe-se diferenciação do modo respiratório tanto na inspiração quanto na expiração quando utilizada a temperatura média da boca com o retângulo e a elipse. Conclusão Sugere-se para avaliação do modo respiratório a avaliação da boca, por meio da elipse, com análise da temperatura média durante a inspiração.

ABSTRACT Purpose To present a method for analyzing breathing modes with infrared thermography. Methods This exploratory cross-sectional study used 38 thermal images of inspiration and expiration with nasal breathing and simulated mouth breathing in four nasal breathers without respiratory complaints. Three different data selection forms (line, rectangle, and ellipse) were used to extract the minimum, mean, and maximum temperatures of the regions of interest (nose and mouth) using the FLIR Tools® software. Results Among the three selection forms, there was greater temperature variability obtained with the line, revealing limitations in this measurement. There were no differences between the rectangle and ellipse values, showing that both selection forms present similar temperature extraction results. The comparison results between nose and mouth temperatures during inspiration and expiration indicated a statistically significant difference between all measurements, except for mean inspiration temperatures with the rectangle and ellipse. The breathing mode can be distinguished in both inspiration and expiration when using mean mouth temperatures with the rectangle and ellipse. Conclusion Breathing modes should be assessed based on mean mouth temperatures during inspiration, using the ellipse.

Methods for Identifying Seeds of Chinese Medicinal Materials： A Review / 中国实验方剂学杂志

Seeds are the source for the production of Chinese medicinal materials. The seed authenticity and quality of directly affect the effectiveness and safety of Chinese medicinal materials. The seed quality is faced with the problems such as mixed sources， existence of adulterants and seeds stocked for years， low maturity， and low purity. To ensure the high-quality and sustainable development of the Chinese medicinal material industry， it is urgent to standardize the seed market and identify and evaluate the quality of the seeds circulating in the market. Seed identification methods include visual inspection， microscopic observation， micro-character identification， chemical fingerprinting， molecular identification， electronic nose， X-ray diffraction， electrochemical fingerprinting， spectral imaging， and artificial intelligence. These methods have different application scopes and unique advantages and disadvantages. According to the different species of Chinese herbal medicines and different requirements of testing sites， suitable methods can be selected to achieve rapid and accurate identification with low costs. In the future， the seed identification methods should be developed based on emerging technologies with interdisciplinary knowledge， and intelligent， nondestructive， and single-grain detection methods are needed for the modern Chinese medicinal material industry. This paper introduces the seed identification technologies currently applied in research and production， compares the principles， applicability， advantages， and disadvantages of different technologies， and provides an outlook on the future development of seed identification technologies， aiming to provide a reference for the identification and quality evaluation of seeds of Chinese medicinal material.

Evaluation of sinonasal-related quality of life of 49 patients undergoing endoscopic skull base surgery

Abstract Objective This study aimed to evaluate the sinonasal-related Quality of Life (QoL) in patients undergoing endoscopic skull base surgery. Methods A retrospective study was performed, including patients with benign and malignant tumors at a single institution. Each patient completed the 22-Item Sino-Nasal Outcome Test (SNOT-22) and the Empty Nose Syndrome 6 Item Questionnaires (ENS6Q) to assess their perceived QoL at least 2-months after treatment. Results Forty-nine patients were enrolled in this study. The average score was 25.1 (Stander Deviation [SD] 14.99) for SNOT-22 and 6.51 (SD = 5.58) for ENS6Q. Analysis of the overall results for the SNOT-22 showed that olfactory damage was the most serious syndrome. The most frequently reported high-severity sub-domains in SNOT-22 were nasal symptoms and sleep symptoms. Nasal crusting was the most severe item in ENS6Q according to the report. Nine patients (18.4%) had a score higher than 10.5 which indicates the high risk of Empty Nose Syndrome (ENS). SNOT-22 score was related to the history of radiotherapy (p < 0.05), while the ENS6Q score was not. Conclusions The possibility of patients suffering from ENS after nasal endoscopic skull base surgery is at a low level, although the nasal cavity structure is damaged to varying degrees. Meanwhile, patients undergoing endoscopic skull base surgery were likely to suffer nasal problems and sleep disorders. Patients who had received radiotherapy have a worse QoL than those without a history of radiotherapy. Level of evidence Level 3.

Reconstrução da ponta nasal: relatos de casos e revisão histórica / Nasal tip reconstruction: case reports and historical review

As amputações traumáticas da ponta nasal são lesões desfigurantes, que determinam importante rejeição social, impondo ao paciente um sofrimento adicional, além daqueles já causados pela ferida e suas limitações funcionais decorrentes do traumatismo. Tais defeitos representam um desafio para os cirurgiões plásticos, e existem diversas técnicas que poderão ser adotadas para tratar este mesmo tipo de defeito. Neste trabalho são mostrados inicialmente três casos de amputação traumática exclusivamente da ponta nasal com seus respectivos tratamentos, para em seguida apresentar uma revisão histórica e discussão das diversas técnicas utilizadas para reconstrução da ponta nasal, avaliando comparativamente e enfatizando a evolução técnica no armamentário da cirurgia plástica.

Traumatic amputations of the nasal tip are disfiguring injuries, which determine important social rejection, imposing additional suffering on the patient and those already caused by the wound and its functional limitations resulting from the trauma. Such defects represent a challenge for plastic surgeons, and several techniques can be adopted to treat this type of defect. This work shows three cases of traumatic amputation exclusively of the nasal tip with their respective treatments. They present a historical review and discussion of the different techniques used for nasal tip reconstruction, comparatively evaluating and emphasizing the technical evolution in plastic surgery armament.

Reconstrução nasal com uso de costela em paciente com síndrome de Binder: Um relato de caso e revisão de literatura / Nasal reconstruction using ribs in a patient with Binder syndrome: A case report and literature review

Introdução: A síndrome de Binder também pode ser conhecida como displasia maxilonasal e é uma malformação congênita caracterizada por hipoplasia nasomaxilar devido a um subdesenvolvimento do esqueleto facial médio. A atual incidência ou prevalência ainda é desconhecida, mas afeta aproximadamente um recém-nascido vivo em cada 10.000 nascimentos. O diagnóstico pode ser clínico ou associado a ultrassonografia pré-natal, caracterizada por nariz achatado e convexidade anormal da maxila. O tratamento é cirúrgico para correção das anormalidades estéticas e funcionais. Relato de Caso: Paciente que recebeu diagnóstico de síndrome de Binder aos 14 anos, sem outras malformações associadas, com queixa estética e funcional nasal. A correção cirúrgica foi iniciada pela extração de um bloco da sexta cartilagem costal à esquerda, com abertura nasal na margem columelar, no padrão de uma rinoplastia aberta, e dissecados os tecidos no plano subSMAS. Após preparo da área receptora nasal, foram esculpidos bloco de cartilagem para reconstrução do dorso nasal, enxertos alares e enxerto de cartilagem septal. Houve melhora de projeção da ponta nasal e alongamento nasal. Conclusão: A rinoplastia pode ser uma cirurgia desafiadora nesses pacientes, sendo a reconstrução autóloga com o uso de cartilagem costal indicada pela literatura como a melhor opção. É necessário individualizar cada caso para programação de enxertos e reestruturação nasal, sendo fundamental também a melhora funcional desses casos.

Introduction: Binder's syndrome can also be known as maxillonasal dysplasia and it is a congenital malformation characterized by nasomaxillary hypoplasia resulting from an underdevelopment of the middle facial skeleton. The current incidence or prevalence is still unknown, but it affects approximately one child in every 10,000 births. The diagnosis can be clinical or associated with prenatal ultrasonography, characterized by a flattened nose and abnormal maxillary convexity. The treatment is surgical to correct aesthetic and functional abnormalities. Case Report: Patient diagnosed with Binder's syndrome at the age of 14, without other associated malformations, with aesthetic and functional nasal complaints. Surgical correction began with the extraction of a block of the sixth costal cartilage on the left, with a nasal opening on the columellar margin, in the pattern of an open rhinoplasty, and tissue dissection in the sub-SMAS plane. After preparing the nasal receptor area, a block of cartilage was sculpted for reconstruction of the nasal dorsum, alar grafts and septal cartilage grafts. There was an improvement in the projection of the nasal tip and nasal dorsum. Conclusion: Rhinoplasty can be a challenging surgery in these patients, and the literature indicates that the best option is autologous reconstruction with costal cartilage. It is necessary to individualize each case to schedule nasal grafts and restructuring, and functional improvement in these cases is also essential

An Incidental Finding Of Button Battery In The Nose Without Any Complication- A Case Report Of A Rare Presentation

Aim And Background-A foreign body in nose presents with unilateral purulent nasal discharge, nasal obstruction and nasal bleed.We present a case in which a button battery remained uncomplicated in the nasal cavity for a year. However, if it is found, it should be removed as early as possible. A 6-year-old female child presented with aCase Description – one-year history of foul-smelling, left-sided nasal discharge. During anterior rhinoscopy, a black, rigid mass was observed. A circular foreign object was found in the floor of the left nasal cavity during a CT (computed tomography) scan of the Nose and PNS (paranasal sinuses). General anesthesia was used during the diagnostic nasal endoscopy on the child. A foreign body was visualized and removed using a curved curette. The nasal mucosa was normal on follow-up, and there was no septal perforation. A detailed history, assessment and radiological examination plays aConclusion- key role in management of foreign bodies.We report that a button battery was left in the nose for a long time without causing any problems. There were no complications from an unnoticed button battery in theClinical Significance: nose for a year. However, if it is found, it should be removed.

Unusual presentation of intranasal myxoma – A case report

Myxomas are benign and locally invasive neoplasms of primitive mesenchymal origin. They are most commonly found in the atria of the heart. They have also been reported in bones, muscles, and other connective tissues. Myxomas are rarely found in the nose and paranasal sinuses. Myxomas are notorious for their recurrence after excision and local invasion. We report a case of intranasal myxoma in a 30-year-old male who presented with blocked ear sensation and progressive nasal block. With this report, we intend to increase awareness about the clinical presentation, histologic characteristics, and management options of myxoma

Use of complementary and alternative medicines in ENT outpatient department of tertiary care hospital in Southern Rajasthan

Background: Complementary and alternative medicine (CAM) use is highly gaining popularity along with main treatment streams these days. Physicians cannot ignore this fact and should question and counsel patients about pros and cons of CAM for cure of different ailments. Aim and Objectives: The objective of the study was to know about use of CAM among patients visiting Ear, Nose, and Throat (ENT) outpatient department (OPD) in tertiary care hospital of Southern Rajasthan. Materials and Methods: An observational cross-sectional study was conducted in ENT OPD for 2 months. Two hundred and fifty patients were considered for the study. Semi-structured questionnaire was prepared and made to be filled by the patients during their visit to ENT OPD after taking informed consent. Various questions were asked like extent of use of alternative therapies, type of CAM used by the patients, patient’s knowledge about ADRs and drug interactions, reasons for which alternative medicine might have been used. Results: Among 250 patients, CAMs were used by 36 patients. The most common CAMs were either Ayurveda or Homoeopathy medicines or both. The majority of patients obtained their information from family and friends. Maximum patients used these alternative medicines for relief of cough and hoarseness of voice. Conclusion: The study throws light on use of alternative drug therapy and streams of medicine along with routine hospital treatment among patients visiting ENT OPD. This knowledge helps to understand about patients’ alternative approach to diseases, about self-medication, patient’s belief about different types of therapies and also ignorance of possible health hazards, side effects, and complications due to use of concomitant main and alternative medicines for treatment purposes.

Usage of Surgical Antibiotic Prophylaxis in Routine Otolaryngologic Surgeries in Turkey

Abstract Introduction: Inappropriate antibiotic use in the world leads to an increase in both health care costs and antibiotic resistance. Surgical antibiotic prophylaxis (SAP) is used by most surgeons, especially in the postoperative period. Objective The aim of the study is to determine the approach of ear, nose, and throat (ENT) specialists to surgical antibiotic prophylaxis in routine surgeries, and to raise awareness regarding inappropriate antibiotic use. Methods ENT specialists from all over Turkey participated in the study by filling out a data collecting form. The form consisted of 6 questions and was sent to specialists via email. Routine ENT operations such as adenoidectomy, tonsillectomy, adenotonsillectomy, ventilation tube application, septoplasty, rhinoplasty, septorhinoplasty (non-complicated), tympanoplasty, and simple mastoidectomy were chosen for the study. Data were analyzed statistically. Results The form results of 110 ENT specialists were evaluated. The rate of participants who used and did not use SAP was 77.3% and 22.7%, respectively. The SAP usage rates of septoplasty, rhinoplasty, and septorhinoplasty operations were 84.7%, 81.2%, and 75.3%, respectively. For tympanoplasty and ventilation tube application operations, the rates were 82.4% and 24.7%, respectively. Finallly, the SAP usage rates of adenoidectomy, tonsillectomy, and adenotonsillectomy were 57.6%, 75.3%, and 72.9%, respectively. Conclusion Otolaryngological surgeries are often classified as clean or clean-contaminated surgeries. In most studies in the literature, it is reported that SAP use is unnecessary in routine otolaryngological surgery. Providing inservice training, regularly updating the prophylaxis guidelines and sharing these guidelines with surgeons may prevent inappropriate SAP use.

Linfoma de células T/natural killer extranodal de tipo nasal enmascarado en una sinusopatia

Introducción: El linfoma de células T citotóxico/natural killer extranodal de tipo nasal es poco frecuente, pero con alta tasa de mortalidad. Las manifestaciones clínicas de la enfermedad pueden simular una infección de senos paranasales. Objetivo: Presentar las manifestaciones clínicas de un paciente de 34 años de edad con diagnóstico de linfoma de células T citotóxico/natural killer extranodal de tipo nasal. Caso clínico: Se presenta un paciente masculino de 34 años de edad con rinorrea verdosa fétida recurrente y obstrucción en fosa nasal derecha. En la evaluación inicial sugiere sinusitis crónica, sin embargo, debido al empeoramiento de las manifestaciones clínicas se realiza una tomografía computarizada que muestra lesiones sugestivas de infiltración neoplásica, una biopsia de la lesión confirma el diagnóstico de linfoma de células T/natural killer extranodal de tipo nasal. Conclusiones: Los linfomas de células T citotóxico/natural killer extranodal de tipo nasal son considerados neoplasias poco frecuentes, caracterizadas por el patrón rápidamente progresivo con afectación ósea; en su etapa inicial presenta manifestaciones clínicas similares a una sinusitis. La tomografía computarizada y la histopatología, son indispensables en el diagnóstico de la enfermedad.

Introduction: Nasal-type extranodal natural killer/cytotoxic T-cell lymphoma is rare but has a high mortality rate. The clinical manifestations of the disease can mimic a paranasal sinus infection. Objective: To present the clinical manifestations of a 34-year-old patient diagnosed with nasal-type extranodal natural killer/cytotoxic T-cell lymphoma. Clinical case: A 34-year-old male patient with recurrent greenish fetid rhinorrhea and obstruction in the right nostril is presented. In the initial evaluation, it suggests chronic sinusitis, however, due to the worsening of the clinical manifestations, a computed tomography is performed that shows lesions suggestive of neoplastic infiltration, a biopsy of the lesion confirms the diagnosis of T-cell lymphoma/extranodal natural killer. Conclusions: Nasal-type extranodal natural killer/cytotoxic T-cell lymphomas are considered rare neoplasms characterized by a rapidly progressive pattern with bone involvement; in its initial stage it presents clinical manifestations similar to sinusitis. Computed tomography and histopathology are essential in the diagnosis of the disease.

Incidence of nasal pressure injury in preterm infants on nasal mask noninvasive ventilation / Incidência de lesão por pressão nasal em prematuros em ventilação não invasiva com máscara nasal

ABSTRACT Objective The aim of this study was to evaluate the incidence of nasal injury in preterm newborns (NB) using the Neonatal Skin Condition Score within 7 days of noninvasive ventilation (NIV) and to compare the incidence of injury in NB weighing ≥1,000 g and those weighing <1,000 g at the time of initiation of NIV support. Methods This is a prospective, observational study carried out in a neonatal intensive care unit of a public hospital in Rio Grande do Sul from July 2016 to January 2021. Patients were stratified into two groups at the time of NIV initiation: group 1 (weight ≥1,000 g) and group 2 (weight <1,000 g). To assess the condition of nasal injury, a rating scale called the Neonatal Skin Condition Score was applied during the first seven consecutive days on NIV. Kaplan-Meier, log-rank test, and Cox proportional hazards regression were used to estimate the hazard ratio (HR) and 95% confidence interval (CI). Results In total, 184 NB were evaluated. Nasal injury was reported in 55 (30%) NB. The risk of nasal injury was 74% higher in group 2 (19/45) than in group 1 (36/139) (HR: 1.74; 95%CI 0.99-3.03, p=0.048). Conclusion The incidence of nasal injury in infants submitted to NIV by nasal mask was high, and the risk of this injury was greater in preterm infants weighing <1,000 g.

RESUMO Objetivo: Avaliar a incidência de lesão por pressão nasal em recém-nascidos (RN) pré-termos usando a Escala de Condição da Pele do Recém-Nascido durante sete dias de ventilação não invasiva (VNI) e comparar a incidência em RN ≥N.000 g e aqueles <1.000 g ao início da VNI. Métodos: Estudo observacional prospectivo realizado em uma Unidade Neonatal de Terapia Intensiva de um hospital público do Rio Grande do Sul, no período de julho de 2016 a janeiro de 2021. Os RN prematuros foram estratificados em dois grupos no momento do início da VNI: Grupo 1 (1u.000 g) e Grupo 2 (<1.000 g). O Neonatal Skin Condition Score foi aplicado durante os primeiros sete dias consecutivos de VNI. Curvas de Kaplan-Meier e teste Log-Rank e regressão de riscos proporcionais de Cox foram utilizados para estimar a razão de risco (HR) e intervalo de confiança (IC) de 95%. Resultados: Foram avaliados 184 RN. A lesão nasal foi relatada em 55 (30%) deles. O risco de lesão nasal foi 74% maior no Grupo 2 (n=19 em 45) do que no Grupo 1 (n=36 em 139) (HR=1,74; IC95% 0,99-3,03; p=0,048). Conclusão: A incidência de lesão nasal em neonatos submetidos à VNI por máscara nasal foi alta, e o risco dessa lesão foi maior em RN com peso <1.000 g.

Evaluation of the breathing mode by infrared thermography

Abstract Objectives: To analyze breathing modes with infrared thermography. Methods: Cross-sectional observational exploratory study conducted in 20 female participants with a mean age of 26.0-years. The thermograms were made following the principles of the American Academy of Thermology and the Brazilian Thermology Society. The camera FLIR A315 (FLIR Inc., Santa Barbara, CA) was used for the tests. The recordings consisted of the participants breathing normally through the nose for 2 min and simulating oral/oronasal breathing for another 2min. The thermograms were analyzed with the FLIR Tools software. An ellipse was placed between the nostrils and the lip commissures to obtain the mean temperatures. The collection was made by two independent researchers, and the normalized non-dimensional temperature was calculated. Results: The temperature in nasal breathing is higher than in oral/oronasal breathing both for inhaling and exhaling when measured in the region of the mouth. The exhaling temperatures were higher than the inhaling ones in oral/oronasal breathing (through the nose and the mouth) and nasal breathing (only through the nose). The temperature difference between exhaling and inhaling (ΔT) was greater in oral/oronasal breathing when measured in the region of the mouth. Conclusion: The thermographic assessment of breathing modes may be made by comparing the mean temperatures of the mouth, using an ellipse. Level of evidence: Study without consistently applied reference standards.

Rinoplastia en nariz mestiza, un desafío quirúrgico / Rhinoplasty in mestizo nose, a surgical challenge

Las características anatómicas de pacientes con nariz mestiza, generalmente, incluyen una nariz aparentemente grande, un dorso convexo con radix bajo y una base nasal ancha. La longitud de la columela y punta nasal se ve disminuida debido a que los cartílagos alares son cortos, débiles y delgados, proporcionando un soporte estructural insuficiente, mala definición y proyección de la punta nasal. La principal dificultad al manejar este tipo de narices es un marco osteocartilaginoso mal estructurado y débil. En los últimos años se han desarrollado técnicas quirúrgicas para mejorar los resultados estéticos y funcionales de la rinoplastía en estos pacientes. Se realizó una revisión exhaustiva de la literatura describiendo las técnicas quirúrgicas utilizadas en este tipo de nariz.

The anatomical characteristics of patients with mestizo nose usually include an apparently large nose, a convex dorsum with a deep radix, and a wide nasal base. The length of the nasal columella and tip is decreased because the alar cartilages are short, weak and thin, providing insufficient structural support, poor definition and nasal tip projection. The main difficulty in managing this type of noses is a poorly structured and weak osteocartilaginous framework. In recent years, surgical techniques have been developed to improve the aesthetic and functional results of rhinoplasty in these patients. A comprehensive literature review was conducted describing the surgical techniques used in this type of nose.

Study on odor composition change of traditional Chinese medicine sachet during placement based on ultra-fast gasphase electronic nose technology / 中国药房

OBJECTIVE To analyze the odor composition changes of two kinds of traditional Chinese medicine sachet （children type and adults type） with different placement time by using ultra-fast gasphase electronic nose technology. METHODS The change rule of sachet components at different storage times was analyzed by gas chromatography. At the same time， the qualitative results were obtained by combining electronic nose with Arochembase database. Discriminant factor analysis was used to analyze the overall odor composition differences of the two sachet samples. RESULTS A total of 10 odor compositions were identified in children-type sachet， including α-pinene and β-pinene as the functional index compositions； five odor compositions of children-type sachet disappeared after 0.25 days， and most of them disappeared after 7 days； the cumulative contribution rate of discriminant factor analysis was 99.225%. A total of 8 odor compositions were identified in adult-type sachets， including α-pinene and α-phellandrene as the functional index compositions； four odor components disappeared after the adult-type sachet was placed for 0.25 days； after 15 days of placement， the peak 6-8 disappeared， and the intensity of peak 5 decreased by 34.3% compared with 0 day of placement； the cumulative contribution rate of discriminant factor analysis was 91.965%. CONCLUSIONS With the extension of storage time， the smell and composition of the two traditional Chinese medicine sachets are decreasing. It is recommended that the use time of children-type sachet is 7 days， and that of adult-type sachet is 15 days.

Analysis on Feasibility of Electronic Nose Technology for Rapid Identification of Bletillae Rhizoma and Its Approximate Decoction Pieces / 中国实验方剂学杂志

ObjectiveTo investigate the feasibility of applying electronic nose technology to rapidly identify Bletillae Rhizoma and its approximate decoction pieces. MethodA total of 134 batches of Bletillae Rhizoma and its approximate decoction pieces， including 45 batches of Bletillae Rhizoma， 30 batches of Gastrodiae Rhizoma， 30 batches of Polygonati Odorati Rhizoma and 29 batches of Bletillae Ochraceae Rhizoma， were collected as test samples. The olfactory sensory data of the samples were collected by PEN3 electronic nose as the independent variable（X）. Based on the identification results of the 2020 edition of Chinese Pharmacopoeia and local standards， as well as the high performance liquid chromatography（HPLC） fingerprint and original purchase information of 134 batches of the decoction pieces， the benchmark data Y of the identification model were obtained， and four chemometric methods of principal component analysis-discriminant analysis（PCA-DA）， partial least squares-discriminant analysis（PLS-DA）， least square-support vector machine（LS-SVM） and K-nearest neighbor（KNN） were used to establish the binary identification model for 45 batches of Bletillae Rhizoma and 89 batches of non-Bletillae Rhizoma and the quadratic identification model of the four kinds of decoction pieces， that is， Y=F（X）. ResultAfter leave-one-out cross validation， the positive discrimination rates of the above four models were 97.01%， 97.01%， 98.51% and 97.01% in the binary identification， and 97.76%， 89.55%， 98.51% and 97.01% in the quadratic identification， respectively. The highest positive discrimination rate could reach 98.51% for the binary and quadratic identification models， and LS-SVM algorithm is both the optimal one， the most suitable kernel functions were chosen as radial basis function and linear kernel function， respectively. The optimal models discriminated well with no unclassified samples. ConclusionElectronic nose technology can accurately and rapidly identify Bletillae Rhizoma and its approximate decoction pieces， which can provide new ideas and methods for rapid quality evaluation of other decoction pieces.

Application of bilateral facial perforator artery flap in repairing large area defect in middle and lower part of nose / 中国修复重建外科杂志

OBJECTIVE@#To investigate the feasibility and effectiveness of bilateral facial perforator artery flap in repairing large area defect in middle and lower part of nose.@*METHODS@#The clinical data of 18 patients with large area defect in middle and lower part of nose repaired by bilateral facial perforator artery flap between January 2019 and December 2022 were retrospectively analyzed. Among them, there were 13 males and 5 females, the age ranged from 43 to 81 years, with an average of 63 years. There were 3 cases of nasal trauma, 4 cases of basal cell carcinoma, 8 cases of squamous cell carcinoma, 1 case of lymphoma, and 2 cases of large area solar keratosis. The size of the defect ranged from 3.0 cm×3.0 cm to 4.5 cm×4.0 cm; the size of unilateral flap ranged from 3.0 cm×1.3 cm to 3.5 cm×2.0 cm, and the size of bilateral flaps ranged from 3.3 cm×2.6 cm to 4.5 cm×4.0 cm.@*RESULTS@#One patient developed skin flap necrosis after operation, and a frontal skin flap was used to repair the wound; 1 case gradually improved after removing some sutures due to venous congestion in the skin flap, and the wound healing was delayed after dressing change; the remaining 16 cases of bilateral facial perforator artery flaps survived well and all wounds healed by first intention, without any "cat ear" malformation. All 18 patients had first intention healing in the donor area, leaving linear scars without obvious scar hyperplasia, and no facial organ displacement. All patients were followed up 3-12 months, with an average of 6 months. Due to the appropriate thickness of the flap, none of the 18 patients underwent secondary flap thinning surgery. All flaps had good blood circulation, similar texture and color to surrounding tissues, symmetrical bilateral nasolabial sulcus, and high patient satisfaction.@*CONCLUSION@#The bilateral facial perforator artery flaps for repairing large area defect in middle and lower part of nose can achieve good appearance and function, and the operation is relatively simple, with high patient satisfaction.

Discrimination of different processing degrees and quantitative study of processing end point of vinegar-processing Cyperi Rhizoma pieces based on electronic sensory technology / 中国中药杂志

In this study, CM-5 spectrophotometer and Heracles NEO ultra-fast gas-phase electronic nose were used to analyze the changes in color and odor of vinegar-processed Cyperi Rhizoma(VPCR) pieces. Various analysis methods such as DFA and partial least squares discriminant analysis(PLS-DA) were combined to identify different processing degrees and quantify the end point of processing. The results showed that with the increase in vinegar processing, the brightness parameter L~* of VPCR pieces decreased gradua-lly, while the red-green value a~* and yellow-blue value b~* initially increased and reached their maximum at 8 min of processing, followed by a gradual decrease. A discriminant model based on the color parameters L~*, a~*, and b~* was established(with a discrimination accuracy of 98.5%), which effectively differentiated different degrees of VPCR pieces. Using the electronic nose, 26 odor components were identified from VPCR samples at different degrees of vinegar processing. DFA and PLS-DA models were established for different degrees of VPCR pieces. The results showed that the 8-min processed samples were significantly distinct from other samples. Based on variable importance in projection(VIP) value greater than 1, 10 odor components, including 3-methylfuran, 2-methylbuty-raldehyde, 2-methylpropionic acid, furfural, and α-pinene, were selected as odor markers for differentiating the degrees of vinegar processing in VPCR. By combining the changes in color and the characteristic odor components, the optimal processing time for VPCR was determined to be 8 min. This study provided a scientific basis for the standardization of vinegar processing techniques for VPCR and the improvement of its quality standards and also offered new methods and ideas for the rapid identification and quality control of the end point of processing for other traditional Chinese medicine.

Establishment of a fast discriminant model with electronic nose for Polygonati Rhizoma mildew based on odor variation / 中国中药杂志

The odor fingerprint of Pollygonati Rhizoma samples with different mildewing degrees was analyzed and the relationship between the odor variation and the mildewing degree was explored. A fast discriminant model was established according to the response intensity of electronic nose. The α-FOX3000 electronic nose was applied to analyze the odor fingerprint of Pollygonati Rhizoma samples with different mildewing degrees and the radar map was used to analyze the main contributors among the volatile organic compounds. The feature data were processed and analyzed by partial least squares discriminant analysis(PLS-DA), K-nearest neighbor(KNN), sequential minimal optimization(SMO), random forest(RF) and naive Bayes(NB), respectively. According to the radar map of the electronic nose, the response values of three sensors, namely T70/2, T30/1, and P10/2, increased with the mildewing, indicating that the Pollygonati Rhizoma produced alkanes and aromatic compounds after the mildewing. According to PLS-DA model, Pollygonati Rhizoma samples of three mildewing degrees could be well distinguished in three areas. Afterwards, the variable importance analysis of the sensors was carried out and then five sensors that contributed a lot to the classification were screened out: T70/2, T30/1, PA/2, P10/1 and P40/1. The classification accuracy of all the four models(KNN, SMO, RF, and NB) was above 90%, and KNN was most accurate(accuracy: 97.2%). Different volatile organic compounds were produced after the mildewing of Pollygonati Rhizoma, and they could be detected by electronic nose, which laid a foundation for the establishment of a rapid discrimination model for mildewed Pollygonati Rhizoma. This paper shed lights on further research on change pattern and quick detection of volatile organic compounds in moldy Chinese herbal medicines.