ULTRASOUND ASSESSMENT OF SUBGLOTTIC LARYNGEAL DIAMETER FOR ESTIMATION OF APPROPRIATE ENDOTRACHEAL TUBE SIZE IN PAEDIATIRIC PATIENTS – A PROSPECTIVE RANDOMIZED STUDY

Background and Aim: The appropriate size of endotracheal tube for children are traditionally selected based on their age, height and or weight by using formulas. The ultrasound guided measurement of subglottic laryngeal diameter can be used to appropriate selection of endotracheal tube. The endotracheal tube is selected based on the nearest external diameter corresponding to the measured subglottic region. The aim of the study is to compare the appropriateness of uncuffed endotracheal tube selection based on age based formula with that of ultrasound assessment of subglottic diameter in children. A prospective randomised parallel group study involving 60 children Materials and Methods: of age 2-6years undergoing elective surgeries under general anaesthesia were selected for study. They are divided into two groups as Group A – Endotracheal tube selection based on ultrasound assessment of diameter of subglottic region and Group B – Endotracheal tube selection based on age based formula which is (Age /3)+ 3.5mm ID. The noted parameters were internal diameter (ID) and external diameter (OD) of the predicted ETT by the two methods, ID and OD of the appropriate size ETT used and the ultrasound assessed subglottic diameter. The incidence of ETT size predicted by ultrasound assessment of Results: subglottic diameter was 83.33% while with age based formula it is 53.34%. The linear regression equation model in Group A showed R²= 0.694, P = 0.001 which was statistically signicant. While in Group B it was R²=0.258., p=0.001. There Conclusion: was a strong correlation between the outer diameter of clinically used uncuffed ETT and the subglottic diameter assessed with ultrasound examination in paediatric patients. Hence USG assessment of the subglottic diameter is a better tool in predicting the appropriate uncuffed ETT in paediatric patients undergoing elective surgeries under general anaesthesia than the age- based formula

Quiste subglótico adquirido como causa inhabitual de estridor en pediatría. Revisión de la literatura a propósito de un caso / Subglottic cyst as an unusual cause of stridor in pediatric patients. Literature review and case report

El estridor corresponde a un signo altamente frecuente, sin embargo, es heterogéneo e inespecífico. Existen múltiples causas conocidas y manejadas por el otorrinolaringólogo. Los quistes subglóticos constituyen una entidad infrecuente de estridor en pediatría, siendo la población más frecuentemente afectada, niños con antecedentes de prematurez e intubación por períodos prolongados. Su manifestación clínica es variada, desde cuadros asintomáticos a pacientes con riesgo inminente de pérdida de la vía aérea. El diagnóstico suele ser tras largos períodos desde el antecedente de intubación. Su resolución suele ser quirúrgica, teniendo como principal complicación asociada la estenosis subglótica y las recurrencias. Se presenta el caso de una preescolar con un episodio de estridor y distrés respiratorio rápidamente progresivos, cuyo diagnóstico intraoperatorio resultó en quistes subglóticos submucosos bilaterales, que requirieron resolución quirúrgica.

Stridor corresponds to a highly frequent sign; however, it is heterogeneous and nonspecific. There are multiple causes that are widely known and managed by the otorhinolaryngolo-gist. Subglottic cysts are an infrequent entity of stridor in pediatric patients, where the most frequently affected population are childrens with history of prematurity and intubation for long periods. It's clinical manifestations are wide, from asymptomatic cases to patients with imminent risk of airway loss. Their manifestation its often after long periods after the moment of intubation. The management often involves surgery, and the main associated complication is subglottic stenosis and recurrences. We present the case of a preschool girl with an episode of rapidly progressive stridor and respiratory distress; whose intraoperative diagnosis was bilateral subglottic submucosal cysts that required surgical resolution.

Subglottic cysts in infants: a report of 3 cases and literature review / 临床耳鼻咽喉头颈外科杂志

Subglottic cyst is a rare cause of laryngeal tinnitus in infants and young children, and only a few cases have been reported at home and abroad. In this paper, we report the clinical characteristics and treatment experience of three cases of subglottic cysts in Children's Hospital of Nanjing Medical University. All the 3 childrem were prematurechildren, with a history of tracheal intubation, and the main symptoms were coughing and wheezing.Electronic nasopharyngolaryngoscopy revealed spherical neoplasm under the glottis. Neck computed tomography （CT） showed a slightly hypodense shadow with poorly defined borders, and no significant enhancement was observed after enhancement. Under the self-retaining laryngoscope, the new organisms were clamped and nibbled, and the cyst wall was cauterized by low temperature plasma. There was no recurrence in postoperative follow-up.

Advances in the treatment of infantile hemangiomas of the larynx / 临床耳鼻咽喉头颈外科杂志

Infantile hemangiomas are relatively common soft tissue tumors in infants and young children, with a prevalence of about 4.5% in full-term newborns. Subglottic Hemangioma （SGH） is a relatively rare type of hemangioma, and its special location often causes respiratory distress and potentially life-threatening conditions in infants. Therefore, it is necessary for clinicians to make an accurate diagnosis and formulate a detailed treatment plan based on the clinical manifestations, the auxiliary examinations, the medical history and the vital signs evaluation of patients.This review describes the pathophysiological mechanism of infantile hemangioma and provides a detailed discussion on commonly used treatment methods in detail.

Analysis of cases of laryngeal airway diseases in infants / 临床耳鼻咽喉头颈外科杂志

Objective:To analyze the clinical data of laryngeal airway diseases in infants and provide reference for the standardized diagnosis and treatment of the disease. Methods:From June 2022 to August 2023, analyze the clinical data of 4 cases of children with laryngeal airway diseases recently admitted to Department of Otolaryngology, Fuzhou Children's Hospital of Fujian Province, and summarize the experience and lessons of diagnosis and treatment by consulting relevant literature. Results:Three cases had symptoms such as laryngeal wheezing, dyspnea, backward growth and development, etc. After electronic laryngoscopy, the first case was diagnosed with laryngeal softening （severe, type Ⅱ）, and the angular incision was performed. While cases 2, 3 diagnosed with case 2 and 3 were diagnosed with laryngeal cyst and underwent laryngeal cyst resection. All three cases underwent low-temperature plasma surgery under visual laryngoscope, and the symptoms were relieved after operation. Case 4 was laryngeal wheezing and dyspnea after extubation under general anesthesia. The electronic laryngoscopy showeded early stage of globetic stenosis, and endoscopic pseudomembrane clamping was performed, and the postoperative symptoms were relieved. Conclusion:Infants and young children with laryngeal airway diseases should pay attention to the early symptoms and be diagnosed by electronic laryngoscopy as soon as possible. With good curative effect and few complications, low-temperature plasma surgery under visual laryngoscope is recommended. The formation of pseudomembrane under the gluteal caused by tracheal intubation causes rapid onset and rapid development. The pseudomembrane extraction by clamping is convenient and fast, with good curative effect.

Consensus recommendations on the evaluation and treatment of laryngotracheal anomalies in infants and young children / 临床耳鼻咽喉头颈外科杂志

Infants with laryngotracheal anomalies are clinically manifested as stridor or noisy breathing, choking, hoarseness, feeding difficulties, and cyanotic spells, followed by developmental and growth retardation and other health issues; in severe cases, patients may present with severe dyspnea, which is associated with high mortality. A timely diagnosis as well as appropriate strategy for laryngotracheal anomalies is still challenging for pediatric otolaryngologists. This consensus statement, evolved from expert opinion by the members of the Pediatric Otorhinolaryngology Professional Committee of the Pediatrician Branch of the Chinese Medical Doctor Association, provides comprehensive recommendations and standardized guidance for otolaryngologists who manage infants and young children with laryngotracheal anomalies in evaluation and treatment based on symptomatology, physical and laboratory examinations.

Survival analysis of patients with subglottic squamous cell carcinoma based on the SEER database

Abstract Objective: This study aimed to investigate the demographic and clinicopathological characteristics, and survival outcomes of subglottic Squamous Cell Carcinoma (SCC) based on the Surveillance, Epidemiology, and End Results (SEER) database. Methods: Demographic and clinicopathological information, including age, sex, race, tumor size, histologic grade, clinical/TNM stage, tumor invasion extent, Lymph Node Metastasis (LNM) extent, size of metastatic lymph nodes, LNM ratio and treatment data, of 842 subglottic SCC patients diagnosed between 1996 and 2016 were acquired. Kaplan-Meier survival analyses were performed to assess the effects of clinicopathological characteristics, treatment modalities, surgical procedures, and adjuvant therapies on overall survival and cancer-specific survival. Results: Subglottic SCC was more frequent among males aged 60-70 years, with low-grade but locally advanced lesions without local or distant metastases. Age and several primary tumor/LNM related variables were independent risk factors for overall survival and cancer specific survival. Advanced-stage and high-grade disease led to unfavorable prognosis. The most common treatment modality and surgical procedure were surgery plus radiotherapy and total laryngectomy, respectively. Surgery plus radiotherapy provided favorable 5-year survival outcomes, while total laryngectomy had the worst. Surgery plus adjuvant therapy showed better survival outcomes than surgery alone. Conclusion: This study confirmed the rarity of subglottic SCC. Patients with subglottic SCCs suffered poor prognosis especially for those with advanced-stage or high-grade lesions. The prognosis of subglottic SCC remained poor over the years, despite recent progress in cancer therapies. Surgery plus adjuvant therapy improved the survival outcome. Although larynx preservation surgery was beneficial for early-stage disease, total laryngectomy was favored for patients with advanced tumors. Level of evidence: Level 4.

Aplicaciones diagnósticas y terapéuticas del videolaringoscopio C-MAC® en cirugía de vía aérea pediátrica / Diagnostic and therapeutic applications of the C-MAC® videolaryngoscope in pediatric airway surgery

Resumen La patología quirúrgica de la vía aérea pediátrica suele ser desafiante. Una visualización adecuada de las estructuras faríngeas y laríngeas es absolutamente necesaria para su correcto diagnóstico y tratamiento. Distintos instrumentos, como laringoscopios de intubación, laringoscopios de suspensión y broncoscopios flexibles o rígidos, permiten acceder a la vía aérea. Muchas veces se requiere el uso de una combinación de ellos para abordar con éxito estos problemas. En esta revisión, discutimos el uso de videolaringoscopios en el manejo de condiciones como estenosis subglótica, lesiones de vía aérea y cuerpos extraños. Aunque los anestesiólogos los utilizan frecuentemente para intubaciones difíciles debido a su cámara incorporada que facilita la visión de las estructuras laríngeas, existen escasos informes sobre su uso por cirujanos de vía aérea. Las ventajas sobre la laringoscopía convencional incluyen una mejor visualización, la capacidad de supervisar el procedimiento a través de una pantalla, una mejor ergonomía, que es portátil y que permite una rápida inserción de diferentes instrumentos. Consideramos que es particularmente útil en la dilatación de estenosis subglóticas. Presentamos un método fácil, barato y reproducible para realizarla.

Abstract Surgical pediatric airway diseases are often challenging, and an adequate visualization of pharyngeal and laryngeal structures is absolutely necessary for their correct diagnosis and treatment. Different instruments such as intubation laryngoscopes, suspension laryngoscopes and flexible and rigid bronchoscopes allow for access to the airway, and using a combination of them, is usually required to successfully address these problems. In this review, we discuss the use of videolaryngoscopes in the management of conditions such as subglottic stenosis, airway lesions and foreign bodies. Although commonly used by anesthesiologists for difficult intubations because of their built-in cameras that facilitate the view of laryngeal structures, there are scarce reports on its use by airway surgeons. Advantages over standard laryngoscopy include improved visualization and the ability to supervise the procedure through a screen. We also consider that it allows for improved ergonomics, portability and fast insertion of different instruments. We have found it to be particularly useful in subglottic stenosis dilation and an easy, cheap and reproducible method is also presented.

Compromiso tumoral de vía aérea en pediatría / Pediatric airway compromise by tumors

Los tumores traqueo bronquiales son extremadamente infrecuentes en la edad pediátrica e incluyen lesiones benignas y malignas. Por la baja frecuencia en niños y sintomatología respiratoria inespecífica, la sospecha diagnostica es habitualmente tardía. El tratamiento de elección en la mayoría de ellos es la resección quirúrgica abierta, sin embargo, la remoción endoscopia podría estar indicada es casos muy seleccionados con histología benigna y de localización accesible.

Tracheobronchial tumors are extremely rare in children and include benign and malignant lesions. Due to the low frequency in children and nonspecific respiratory symptoms, diagnostic suspicion is usually late. The treatment of choice in most of them is open surgical resection, however, endoscopy removal could be indicated in highly selected cases with benign histology and accessible location.

Slide laryngotracheoplasty for treating congenital subglottic stenosis: a case report and follow-up / 中华实用儿科临床杂志

The data of a case of congenital subglottic stenosis (C-SGS) who underwent slide laryngotracheoplasty in the Center for Respiratory Intervention, Children′s Hospital Affiliated to Shandong University in December 2021 was analyzed retrospectively.The patient was a girl aged 2 months and 15 days.She visited the hospital 23 days after tracheotomy due to dyspnea for more than 2 months.The bronchoscopy and annular cartilage B ultrasound results suggested subglottic stenosis and no scar hyperplasia.Based on the medical history, the child was diagnosed with C-SGS.Slide laryngotracheoplasty was performed 2 weeks after admission, and the tracheotomy tube was removed after surgery.The child was followed up 2 months after surgery, and she recovered well with no dyspnea.The study results suggest that early and safe slide laryngotracheoplasty after definite diagnosis can provide immediate and sufficient airway space for C-SGS patients, and protect their voice and swallowing function.

Quistes subglóticos adquiridos: Reporte de tres casos y revisión de la literatura / Acquired subglottic cysts: Report of three cases and review of the literature

Los quistes subglóticos adquiridos son una causa rara de estridor en la infancia, cuyo reporte ha ido en aumento en las últimas décadas. Su aparición se relaciona con la prematurez y la intubación en el periodo neonatal. Histológicamente, se observa una obstrucción de las glándulas mucosas de la subglotis debido una metaplasia escamosa del epitelio respiratorio. Esta es una condición que usualmente requiere de un alto índice de sospecha para llegar al diagnóstico, ya que pueden confundirse con otras patologías como laringitis aguda (croup), laringomalacia o asma. La nasofibroscopía permite sospechar su presencia, pero el gold standard diagnóstico lo constituye la laringo-tra-queo-broncoscopía directa en pabellón. Existen diversas técnicas para su manejo, siendo las más frecuentemente utilizadas la marsupialización con instrumental frío y láser. La recurrencia es frecuente, por lo que algunos autores han utilizado mitomicina C y la terapia antirreflujo para intentar disminuirla. Sin embargo, hasta la fecha falta evidencia de calidad que permita llegar a un consenso respecto al manejo ideal de esta patología. En este trabajo, presentamos tres casos clínico de pacientes con antecedentes de prematurez que fueron diagnosticados con quistes subglóticos adquiridos y manejados en un hospital pediátrico de alta complejidad.

Acquired subglottic cysts are an infrequent cause of stridor in infants, which has been increasingly reported in the last decades. Its appearance is related to prematurity and intubation in the neonatal period. Histologically, findings are characterized by an obstruction of the mucosal glands, due to squamous metaplasia of the respiratory epithelium. This condition usually requires a high index of suspicion to be diagnosed, as it can be misdiagnosed as croup, laryngomalacia or asthma. Flexible nasendoscopy allows an initial exploration of the larynx, but direct laryngo-tracheo-bronchoscopy in the operating room is the diagnostic gold standard. There are several techniques for its management, but the most frequently used are cold-steel marsupialization and laser. Recurrence is common, and some authors have used mitomycin C and antireflux therapy to try to decrease it. However, up to date, there is a lack of high-quality evidence, regarding the ideal management of this pathology, which prevents reaching a consensus. In this article, we present three clinical cases of premature patients who were diagnosed with subglottic cysts, treated in a tertiary pediatric hospital.

Disfonía por tensión muscular: concepto y criterios diagnósticos / Muscle tension dysphonia: concept and diagnostic criteria

Introducción. La disfonía por tensión muscular fue definida, desde 1983, como un desorden que ocasiona un desbalance en las fuerzas de tensión muscular laríngea sin evidencia de patología estructural o neurológica. Denominado también disfonía por tensión muscular, tipo 1, este desorden aún no tiene estandarizadas las características que en la práctica han sido consideradas parte de su diagnóstico.Objetivo. Revisar la información actual, no mayor a cinco años, sobre disfonía por tensión muscular para unificar criterios y diagnósticos actuales.Metodología. Se realizó una búsqueda sistemática a través de las bases de datos PubMed, Google Scholar y Cochrane. Los términos MESH utilizados fueron: dis-fonía por tensión muscular, disfonía funcional, disfonía hipercinética y fatiga vocal. Criterios de inclusión: artículos publicados en revistas arbitradas, sin importancia del diseño y antigüedad no mayor a cinco años. Criterios de exclusión: artículos cuyo enfoque principal no fuera disfonía por tensión muscular y con idioma diferente al inglés o español.Resultados. Dos estudios refieren mayor patología en mujeres que hombres; cuatro investigaciones reportan presión subglótica aumentada (>90 mmHg); tres trabajos reportaron medidas fonatorias; un trabajo propone video de alta resolución como demostración de hiperfunción vocal; una investigación evaluó onda mucosa por elec-troglotografía; una investigación estudió el uso de resonancia magnética funcional; otro trabajo propuso un estudio piloto de evaluación de flujo sanguíneo de músculos infrahioideos. Otro trabajo hace una revisión del uso de métodos diagnósticos.Conclusiones. Los parámetros de mayor peso fueron pico cepstral y presión sub-glótica. Aún es necesario ampliar el conocimiento con nuevas investigaciones que permitan criterios universales

Introduction. Muscle tension dysphonia has been defined since 1983 as a disorder in which there is an imbalance in laryngeal muscle tension forces, without evidence of structural or neurological pathology; it has also been called type I muscle tension dysphonia. The characteristics that in practice have been considered part of the di-agnosis are not standardized.Objective. To review current information, not older than 5 years, on muscle tension dysphonia, unifying current diagnostic criteria.Methodology. A systematic search was carried out through the Pub Med, Google scholar and Cochrane databases. The MESH terms used were: muscle tension dys-phonia, functional dysphonia, hyperkinetic dysphonia, and vocal fatigue. Inclusion criteria: articles published in peer-reviewed journals, regardless of design and pub-lished no more than 5 years before. Exclusion criteria: articles whose main focus was not muscle tension dysphonia and with a language other than English or Spanish.Results. Two studies report more pathology in women than men; four investiga-tions report increased subglottic pressure (> 90 mmHg); three studies reported pho-natory measures; a work proposes high resolution video as a demonstration of vo-cal hyperfunction; an investigation evaluated mucosal wave by electroglottography; an investigation studied the use of functional magnetic resonance imaging; another work proposed a pilot study of infrahyoid muscle blood flow assessment: another work reviews the use of diagnostic methods.Conclusions. The parameters of greater weight were cepstral peak and subglottic pressure. It is still necessary to expand the knowledge with new research that allows universal criteria

El niño con estridor persistente / The child with persistent stridor

El estridor es un ruido respiratorio anormal generado por obstrucción o colapso de la vía aérea laringotraqueal, de manera aguda o de evolución crónica. Existen distintas causas tanto congénitas como adquiridas capaces de producir dificultad respiratoria, que puede llegar a ser grave y con potencial riesgo vital. El diagnóstico clínico del paciente con estridor persistente debe ser complementado con un estudio endoscópico de la vía aérea y en ocasiones con imágenes, para intentar determinar el o los sitios comprometidos y posibles malformaciones asociadas. La indicación de tratamiento debe ser individualizada, considerando el estado general del paciente, las etiologías responsables, el im pacto sobre la respiración y la deglución, el pronóstico y la capacidad técnica del equipo tratante, entre otras. Las alternativas pueden incluir observación, medidas no farmacológicas, medicamentos locales o sistémicos, procedimientos endoscópicos, cirugías abiertas, o bien la instalación de una traqueostomía de manera temporal o como manejo definitivo. El objetivo de esta revisión es entregar un adecuado conocimiento de la fisiopatología y la etiopatogenia del estridor pediátrico persistente, fundamental para el correcto manejo de estos pacientes complejos, que debiera realizarse idealmente en un contexto multidisciplinario.

Stridor is an abnormal respiratory sound caused by obstruction or collapse of the laryngotracheal airway, either acutely or chronically. There are different causes, both congenital and acquired, that can produce shortness of breath which may be severe and potentially life-threatening. The clini cal diagnosis must be complemented with an endoscopic airway assessment and sometimes with imaging, to try to determine the areas involved and possible associated malformations. Treatment should be individualized, considering the patient's overall condition, stridor etiology, its impact on breathing and swallowing, prognosis, and technical capacity of the managing team, among others. Alternatives may include observation, non-pharmacological measures, local or systemic medications, endoscopic and open surgeries, or a temporary or long-term tracheostomy. A thorough understan ding of the pathophysiology and etiopathogenesis of persistent pediatric stridor is essential for the correct management of these complex patients, ideally in a multidisciplinary manner.

Pediatric airway reconstruction: results after implementation of an airway team in Brazil / Reconstrução de vias aéreas pediátricas: resultados após a implantação de uma equipe de vias aéreas no Brasil

Abstract Introduction Since development of pediatric intensive care units, children have increasingly and appropriately been treated for complex surgical conditions such as laryngotracheal stenosis. Building coordinated airway teams to achieve acceptable results is still a challenge. Objective To describe patient demographics and surgical outcomes during the first 8 years of a pediatric airway reconstruction team. Methods Retrospective chart review of children submitted to open airway reconstruction in a tertiary university healthcare facility during the first eight years of an airway team formation. Results In the past 8 years 43 children underwent 52 open airway reconstructions. The median age at surgery was 4.1 years of age. Over half of the children (55.8%) had at least one comorbidity and over 80% presented Grade III and Grade IV subglottic stenosis. Other airway anomalies occurred in 34.8% of the cases. Surgeries performed were: partial and extended cricotracheal resections in 50% and laryngotracheoplasty with anterior and/or posterior grafts in 50%. Postoperative dilatation was needed in 34.15% of the patients. Total decannulation rate in this population during the 8-year period was 86% with 72% being decannulated after the first procedure. Average follow-up was 13.6 months. Initial grade of stenosis was predictive of success for the first surgery (p = 0.0085), 7 children were submitted to salvage surgeries. Children with comorbidities had 2.5 greater odds (95% CI 1.2-4.9, p = 0.0067) of unsuccessful surgery. Age at first surgery and presence of other airway anomalies were not significantly associated with success. Conclusions The overall success rate was 86%. Failures were associated with higher grades of stenosis and presence of comorbidities, but not with patient age or concomitant airway anomalies.

Resumo Introdução: Com o desenvolvimento de unidades de terapia intensiva pediátrica, o tratamento de crianças para situações cirúrgicas complexas, como a estenose laringotraqueal, tem sido cada vez mais adequado. Montar equipes coordenadas de via aérea para alcançar resultados aceitáveis ainda é um desafio. Objetivo: Descrever os dados demográficos e os resultados cirúrgicos dos pacientes durante os primeiros oito anos de uma equipe de reconstrução de via aérea pediátrica. Método: Revisão retrospectiva de prontuários de crianças submetidas à reconstrução aberta de via aérea em uma unidade de saúde universitária de nível terciário durante os primeiros oito anos de desenvolvimento de uma equipe de vias aéreas. Resultados: Nos últimos 8 anos, 43 crianças foram submetidas a 52 reconstruções abertas de vias aéreas. A mediana de idade na cirurgia foi de 4,1 anos. Mais da metade das crianças (55,8%) apresentavam pelo menos uma comorbidade e mais de 80% apresentavam estenose subglótica Grau III e Grau IV. Outras anomalias das vias aéreas ocorreram em 34,8% dos casos. As cirurgias feitas foram: ressecções cricotraqueais parciais e estendidas em 50% e laringotraqueoplastia com enxertos anterior e/ou posterior em 50%. A dilatação pós-operatória foi necessária em 34,15% dos pacientes. A taxa de decanulação total nesta população durante o período de 8 anos foi de 86%, com 72% dos pacientes decanulados após o primeiro procedimento. O seguimento médio foi de 13,6 meses. O grau inicial de estenose foi preditivo de sucesso para a primeira cirurgia (p = 0,0085), 7 crianças foram submetidas a cirurgias de resgate. Crianças com comorbidades apresentaram uma probabilidade 2,5 vezes maior (IC95% 1,2-4,9, p = 0,0067) de cirurgias sem sucesso. A idade na primeira cirurgia e a presença de outras anomalias das vias aéreas não foram significantemente associadas ao sucesso. Conclusões: A taxa global de sucesso foi de 86%. As falhas foram associadas a graus maiores de estenose e a presença de comorbidades, mas não com a idade do paciente ou anomalias concomitantes das vias aéreas.

Accuracy of stridor-based diagnosis of post-intubation subglottic stenosis in pediatric patients / Precisão do diagnóstico de estenose subglótica pós-intubação com base em estridorem pacientes pediátricos

Abstract Objective To assess the accuracy of stridor in comparison to endoscopic examination for diagnosis of pediatric post-intubation subglottic stenosis. Method Children who required endotracheal intubation for >24 h were included in this prospective cohort study. Children were monitored daily and underwent flexible fiberoptic laryngoscopy after extubation. Those with moderate-to-severe abnormalities underwent another examination 7-10 days later. If lesions persisted or symptoms developed, laryngoscopy under general anesthesia was performed. Patients were assessed daily for stridor after extubation. Results A total of 187 children were included. The incidence of post-extubation stridor was 44.38%. Stridor had a sensitivity of 77.78% (95% confidence interval [95% CI]: 51.9-92.6) and specificity of 59.18% (95% CI: 51.3-66.6) in detecting subglottic stenosis. The positive predictive value was 16.87% (95% CI: 9.8-27.1), and the negative predictive value was 96.15% (95% CI: 89.9-98.8). Stridor persisting longer than 72 h or starting more than 72 h post-extubation had a sensitivity of 66.67% (95% CI: 41.2-85.6), specificity of 89.1% (95% CI: 83.1-93.2), positive predictive value of 40.0% (95% CI: 23.2-59.3), and negative predictive value of 96.07% (95% CI: 91.3-98.4). The area under the receiver operating characteristic (ROC) curve was 0.78 (95% CI: 0.65-0.91). Conclusions Absence of stridor was appropriate to rule out post-intubation subglottic stenosis. The specificity of this criterion improved when stridor persisted longer than 72 h or started more than 72 h post-extubation. Thus, endoscopy under general anesthesia can be used to confirm subglottic stenosis only in patients who develop or persist with stridor for more than 72 h following extubation.

Resumo Objetivo Analisar a precisão do estridor em comparação com o exame endoscópico no diagnóstico de estenose subglótica pós-intubação em crianças. Método Foram incluídas neste estudo de coorte prospectivo crianças que necessitaram de intubação endotraqueal por mais de 24 horas. Elas foram monitoradas diariamente e submetidas à nasofibrolaringoscopia flexível após a extubação. As crianças com anomalias moderadas foram submetidas a outro exame sete a 10 dias depois. Caso as lesões persistissem ou os sintomas evoluíssem, a laringoscopia era realizada com anestesia geral. Os pacientes foram avaliados diariamente quanto ao estridor após a extubação. Resultados Participaram 187 crianças. A incidência de estridor após a intubação foi de 44,38%. O estridor apresentou uma sensibilidade de 77,78% (intervalo de confiança de 95% [IC]: 51,9-92,6) e especificidade de 59,18% (IC: 51,3-66,6) na detecção de SGS. O valor preditivo positivo foi de 16,87% (IC: 9,8-27,1) e o valor preditivo negativo (VPN) foi de 96,15% (IC: 89,9-98,8). O estridor que persistiu por mais de 72 horas ou que começou 72 horas após a extubação teve uma sensibilidade de 66,67% (IC: 41,2-85,6), especificidade de 89,1% (IC: 83,1-93,2), valor preditivo positivo de 40,0% (IC: 23,2-59,3) e valor preditivo negativo de 96,07% (IC: 91,3-98,4). A área sob a curva de característica de operação do receptor (ROC) foi de 0,78 (IC: 0,65-0,91). Conclusões A ausência de estridor foi adequada para descartar a estenose subglótica pós-intubação. A especificidade desse critério melhorou quando o estridor perdurou por mais de 72 horas ou começou mais de 72 horas após a extubação. Assim, a endoscopia com anestesia geral pode ser utilizada para confirmar a estenose subglótica somente em pacientes que desenvolveram ou continuaram com estridor por mais de 72 horas após a extubação.

Diagnosis and treatment of 15 cases of idiopathic subglottic stenosis / 临床耳鼻咽喉头颈外科杂志

The aim of this study is to o explore the diagnosis, treatment and prognosis of idiopathic subglottic stenosis （ISS） The clinical data of 15 patients with idiopathic subglottic stenosis treated in our department were analyzed retrospectively. The degree of stenosis was classified by the Cotton Airway grading system of Myer, with 8 cases of gradeⅡ, 4 cases of grade Ⅲ and 3 cases of grade Ⅳ. The time of follow-up of HTSS was 0.5-10 years. All 15 patients were successfully extubated without asphyxia, decannulation and wound nonunion. For patients with idiopathic subglottic stenosis in the non-progressive stage, active surgical treatment strategy should be adopted and treated individually. The prognosis is satisfactory.

Participation of Clinical Pharmacists in Pharmaceutical Care for a Child with Subglottic Talaromyces marneffei Infection / 中国药房

OBJECTIVE：To investigate the role of clinical pharmacists on the individualized treatment of children with subglottic Talaromyces marneffei infection. METHODS ：The clinical pharmacists participated in the medication procedure for a case of subglottic T. marneffei infection child . The clinical pharmacists suggested that Budesonide suspension for inhalation should be stopped，according to the subglottic infection pathogen type （T. marneffei ）；Itraconazole oral solution should be chosen and taken orally 2.5 mg/kg，q12 h，and indicators as liver function ，blood potassium should be monitored regularly. However ，as Itraconazole oral solution needed to be applied for temporary purchase ，Itraconazole capsules 2.5 mg/kg，q12 h，p.o.，was administrated temporarily ；clinical pharmacists suggested that Itraconazole capsules should be taken after meal ，and the doctor changed the feeding mode of milk from q 4 h to continuous pumping. After purchased ，Itraconazole oral solution was used instead 2.5 mg/kg，q12 h in fasting state ，and according the clinical pharmacist ’s suggestion ，the doctor changed the nursing method to q 4 h milk pumping. After purchasing and using oral solution instead ，clinical pharmacists suggested taking it at fasting state ；according to the monitoring results and target range （0.5-1 mg/L），oral dose of Itraconazole oral solution was finally adjusted to 8.3 mg/kg， q12 h. In view of the diarrhea during the treatment ，clinical pharmacists suggested to continue the original treatment after considering the effectiveness and importance of the treatment ；at the same time ，discharge medication education should be carried out. RESULTS ： The doctors adopted the suggestions of the clinical pharmacists. The child got a clinical improvement and was discharged after 48 days. CONCLUSIONS ：Clinical pharmacists participate in the treatment of children with T. marneffei infection，timely assist physicians to adjust and improve the medication regimen ，which improve the efficacy and safety of medication for children.

Diagnosis and treatment of 15 cases of idiopathic subglottic stenosis / 临床耳鼻咽喉头颈外科杂志

Objective@#The aim of this study is to o explore the diagnosis, treatment and prognosis of idiopathic subglottic stenosis （ISS） @*Method@#The clinical data of 15 patients with idiopathic subglottic stenosis treated in our department were analyzed retrospectively. The degree of stenosis was classified by the Cotton Airway grading system of Myer, with 8 cases of gradeⅡ, 4 cases of grade Ⅲ and 3 cases of grade Ⅳ. @*Result@#The time of follow-up of HTSS was 0.5-10 years. All 15 patients were successfully extubated without asphyxia, decannulation and wound nonunion. @*Conclusion@#For patients with idiopathic subglottic stenosis in the non-progressive stage, active surgical treatment strategy should be adopted and treated individually. The prognosis is satisfactory.

Dilatación precoz de estenosis subglótica adquirida posintubación utilizando tubos endotraqueales / Early dilatation of acquired post-intubation subglottic stenosis using endotracheal tubes

RESUMEN Introducción: La estenosis subglótica adquirida es una causa importante de estridor persistente después de una intubación endotraqueal. El diagnóstico y manejo tempranos pueden llevar a procedimientos menos invasivos con altas tasas de éxito. Si las lesiones agudas posintubación evolucionan hacia una estenosis, las dilataciones endoscópicas usando instrumentos romos o balones podrían lograr restablecer un lumen adecuado. Los balones son efectivos, pero caros y obstruyen la vía respiratoria al momento de la dilatación. Objetivo: Presentar nuestra experiencia con la dilatación progresiva de estenosis subglótica adquirida posintubación utilizando tubos endotraqueales. Material y método: Revisión retrospectiva de las dilataciones realizadas como tratamiento primario en estenosis subglótica pediátrica adquirida. Resultados: Se incluyeron 16 pacientes con estenosis de grados I a III, con una edad promedio de 2 años y 4 meses. El tiempo promedio de intubación fue de 6,6 días. El número de procedimientos promedio fue de 2, con un rango de 1 a 6. El éxito clínico se logró en todos los pacientes, con resolución de los síntomas respiratorios y evitando la traqueostomía. No hubo complicaciones ni mortalidad asociadas. Conclusión: En esta cohorte, la dilatación subglótica con tubos endotraqueales fue eficaz y segura. Estos están ampliamente disponibles y permiten ventilar al paciente mientras se realiza el procedimiento.

ABSTRACT Introduction: Acquired post-intubation subglottic stenosis is one of the most important complications causing persistent stridor after endotracheal intubation. Early diagnosis and management can lead to less-invasive procedures with high success rates. If the acute post-intubation injuries progress into a stenosis, endoscopic dilatations can be attempted to reestablish an adequate lumen. These can be performed using blunt instrument or balloons. Balloons are effective but expensive, and obstruct the airway while dilatating. Aim: Present our experience with progressive blunt dilatation of acquired post-intubation subglottic stenosis using endotracheal tubes. Material and method: Retrospective chart review of dilatations performed as the primary treatment in early acquired pediatric subglottic stenosis. Results: 16 patients with grades I to III stenosis were included. Average age was 2 years 4 months, and average intubation time was 6.6 days. The number of procedures ranged between 1 and 6, with a mean of 2. Clinical success was achieved in all patients, with resolution of respiratory symptoms and avoidance of tracheostomy. There were no complications or mortality. Conclusion: In this cohort, subglottic dilatation using endotracheal tubes was effective and safe. Endotracheal tubes are easily available and allow to ventilate the patient while performing the procedure.

Autologous tracheal cartilage composite graft for a subglottic defect after laryngotracheal resection for invasive papillary thyroid carcinoma

@#<p style="text-align: justify;"><strong>OBJECTIVE: </strong>To present a function-preserving surgical technique of post-laryngotracheal resection reconstruction of the subglottic airway using autologous tracheal cartilage composite graft.</p><p style="text-align: justify;"><strong>METHODS:</strong></p><p style="text-align: justify;"><strong>     Design:</strong>            Case Report</p><p style="text-align: justify;"><strong>     Setting:</strong>           Tertiary Government Training Hospital</p><p style="text-align: justify;"><strong>     Participants:</strong>   One</p><p style="text-align: justify;"><strong>RESULT: </strong>A 77-year-old woman diagnosed with papillary thyroid carcinoma with laryngotracheal invasion underwent total thyroidectomy with laryngotracheal resection. The tracheal defect was reconstructed using end-to-end anastomosis of the trachea to the remaining cricoid. The cricoid (subglottic) defect was repaired using the harvested tracheal cartilage with mucosa. Post-operatively, the patient was maintained on nasogastric tube feeding and tracheostomy tube for 2 weeks. Subsequently, the nasogastric tube and tracheostomy tube were removed and the patient tolerated oral feeding without any airway problem. The last follow-up of the patient was 6 months post-operatively without complications.</p><p style="text-align: justify;"><strong>CONCLUSION: </strong>Autologous tracheal cartilage may be a potentially promising composite graft for reconstruction of the cricoid (subglottic) defect in a patient following laryngotracheal resection for invasive papillary thyroid carcinoma of the larynx and trachea.</p><p style="text-align: justify;"> </p>