Impacto del síndrome de apneas obstructivas del sueño en accidentes de tránsito en Chile

Resumen Introducción: Existe abundante evidencia para considerar al síndrome de apnea obstructiva del sueño (SAOS) como un factor de riesgo significativo en la ocurrencia de accidentes de tránsito. En el año 2018, los accidentes de tránsito en Chile provocaron 1.507 muertes, 60 mil lesionados, y generaron un costo país de US $5.985 millones al año (2,1% PIB). Sin embargo, se desconoce la prevalencia de SAOS en conductores, ni su impacto en la accidentabilidad a nivel nacional. Objetivo: Estimar la prevalencia de SAOS en conductores nacionales, y su importancia relativa en el número de accidentes, lesionados, muertes y costos asociados. Material y Método: Revisión de la literatura, análisis descriptivo con bases de datos secundarias. Estimación de prevalencia de riesgo de SAOS en conductores nacionales, profesionales, y cálculo de costos asociados a accidentabilidad. Resultados: Se estima prevalencia de SAOS moderado a severo en un 28,6% para conductores nacionales y 30,2% para conductores profesionales. Utilizando un odds ratio de 2,52 (IC 1,84-3,35) como estimador de riesgo, se obtiene un riesgo atribuible porcentual poblacional de 30,28%, que se traduce en que SAOS sería responsable de 27.046 accidentes, 17.545 lesionados, 456 muertes, y un costo país de US $1.812,4 millones al año atribuibles a SAOS para las cifras de accidentabilidad 2018. Conclusión: El presente trabajo es la primera aproximación al tema a nivel chileno. Se requieren estudios de prevalencia de SAOS en conductores para realizar estimaciones más precisas. Impresiona necesario colocar este tema en la agenda pública, por la posible reducción de riesgos.

Abstract Introduction: There is abundant evidence to consider obstructive sleep apnea syndrome (OSAS) as a significant risk factor in the occurrence of traffic accidents. In 2018, traffic accidents in Chile caused 1,507 deaths, 60 thousand injured, and generated a country cost of US $ 5,985 million per year (2.1% GDP). However, the prevalence of OSAS in national drivers, nor its impact on accident rate level is unknown. Aim: To estimate the prevalence of OSAS in Chilean drivers, and their relative importance in the number of accidents, injuries, deaths and associated costs. Material and Method: Literature review, descriptive analysis with secondary databases. Estimation of risk prevalence of OSAS in Chilean drivers, professional drivers, and calculation of costs associated with accident rates. Results: The prevalence of moderate to severe OSAS is estimated at 28,6% for national drivers, 30,2% for professional drivers. Using an OR of 2.52 (CI 1.84-3.35) as a risk estimator), a population attributable risk percentage of 30,28% is obtained, which translates to 27,046 accidents, 17,545 injured, 456 deaths, and a country cost of US $ 1,812.4 million per year attributable to OSAS for accidents in 2018. Conclusion: This paper is the first approach to the subject at the Chilean level. OSAS prevalence studies in drivers are required to make more accurate estimates. It is necessary to place this topic on the public agenda, due to the possible risk reduction.

Síndrome de Tapia posterior a cirugía nasal

Resumen El síndrome de Tapia es una complicación poco frecuente secundaria a la manipulación de la vía aérea. Se caracteriza por haber una lesión concomitante de los pareas craneales X (nervio vago) y XII (nervio hipogloso), usualmente por compresión o sobredistensión de estos. Inicialmente puede hacernos sospechar una lesión central, al haber compromiso de dos nervios craneales bajos en forma simultánea, pero la gran mayoría de los casos descritos son lesiones periféricas. De los procedimientos asociados a esta complicación, los que lideran en frecuencia son los de cabeza y cuello, por lo que es de gran importancia tenerlo en conocimiento en el desarrollo de nuestra práctica clínica. Nuestro paciente presentó esta complicación tras una septoplastía con turbinectomía sin complicaciones en el sitio operatorio, ni anestésicas. Se manejó con fonoaudiología y corticoides orales, con recuperación completa a los cuatro meses de posoperatorio.

Abstract Tapia's Syndrome is a rare complication secondary to airway manipulation. It is characterized by a concurrent lesion of cranial nerve pairs X (vagus nerve) and XII (hypoglossal nerve), usually attributed to compression or stretching of these nerves. Initially, it may lead us to suspect a central lesion, as there is simultaneous involvement of two low cranial nerves, but the vast majority of cases described are peripheral lesions. The procedures most frequently associated with this complication are head and neck surgery, which is why it is very important to bear this in mind in the development of our clinical practice. Our patient showed Tapia's syndrome following septoplasty with turbinectomy without complications in the operative site nor under anesthesia. He was treated with phoniatric and oral corticoids, recovering completely four months after surgery.

Quiste nasolabial: reporte de dos casos / Nasolabial cysts: report of two cases

Los quistes nasolabiales son lesiones quísticas poco frecuentes, que se presentan como ocupación de la fosa canina, el ala nasal o el vestíbulo nasal. Usualmente son asintomáticas, pero pueden infectarse. El diagnóstico se realiza con el examen físico y exámenes imagenológicos, como la tomografía computarizada y/o resonancia magnética. El tratamiento consiste en la extirpación quirúrgica completa por abordaje sublabial, o por marsupialización endoscópica transnasal. Se describen dos casos, uno de ellos es una paciente de sexo femenino que presenta deformidad nasal producto del crecimiento progresivo de un quiste nasolabial unilateral, y otro de un paciente de sexo masculino que presenta una celulitis facial severa, con una tomografía computarizada que muestra quistes nasolabiales bilaterales. Los quistes nasolabiales deben ser considerados como parte del diagnóstico diferencial en otorrinolaringología en cuadros de deformidad nasal y aumento de volumen facial.

Nasolabial cysts are a rare developmental cyst, presenting as a fullness of canine fossa, nasal ala or vestibule of the nose. They are usually asymptomatic but may become infected. The diagnostic approach includes physical examination and imaging studies such as computed tomography and/or magnetic resonance imaging. Treatment is complete surgical excision by sublabial approach, or transnasal endoscopic marsupialization. Here we describe two cases, one female presenting as nasal deformity due to progressive growth of unilateral nasolabial cyst, and a healthy young male presenting severe facial cellulitis, with a computed tomography showing bilateral nasolabial cysts. Nasolabial cyst should be incorporated in the differential diagnosis of nose deformities and facial swelling in otorhinolaryngology.

Lipoma intraóseo en la región esfenoclival: reporte de un caso y revisión de la literatura / Intraosseous lipoma in the sphenoclival region: case report and review of the literature

RESUMEN El lipoma intraóseo es un tumor mesenquimatoso poco frecuente que se presenta principalmente en el esqueleto apendicular. La localización dentro del cráneo, es aún más rara, y hasta la fecha solo se han descrito 6 casos en la literatura de lipomas intraóseos que comprometen la región esfenoclival. Por lo general, no presenta ningún síntoma y es un hallazgo incidental en el estudio de imágenes. Presentamos el caso de un paciente de 22 años de edad que consulta por obstrucción nasal y rinorrea mucosa de tres semanas de evolución. La tomografía computarizada y resonancia nuclear magnética evidenciaron una lesión en la región esfenoclival con características sugerentes de lipoma intraóseo. No se realiza estudio histopatológico. Con respecto al manejo, se decide hacer seguimiento radiológico. Se realizó una segunda resonancia magnética 4 meses después, sin cambios significativos.

ABSTRACT Intraosseous lipoma are a rare mesenchymal tumor that occurs primarily in the appendicular skeleton. Skull presentation is a rare finding, and only 6 cases have been described in literature so far of lipomas that compromise the sphenoclival region. In general, they are asymptomatic and occur as incidental findings in imaging studies. We present the case of a 22-year-old patient who consulted for nasal obstruction and mucous rhinorrhea of three weeks of evolution. Computed tomography and magnetic resonance imaging showed a lesion in the sphenoclival region suggestive of intraosseous lipoma. Histopathological study was not performed. Regarding management, radiological follow-up was decided. A second MRI was taken 4 months later, with no significant changes.

Enfermedad de Rosai-Dorfman con compromiso laríngeo: a propósito de un caso / Rosai-Dorfman disease with laryngeal involvement: about a case

RESUMEN La enfermedad de Rosai-Dorfman (ERD) o histiocitosis sinusal con linfadenopatía masiva es una enfermedad infrecuente, de etiología desconocida caracterizada por linfadenopatías cervicales masivas bilaterales. El compromiso extraganglionar puede ocurrir en diferentes sitios, incluida la vía aérea, en la cual la localización nasosinusal es la más frecuente, pero puede comprometer también otros sitios de la vía aérea superior. Dentro de éstos, el compromiso laríngeo es muy poco frecuente. Se presenta el caso de una paciente de 82 años con antecedentes de ERD localizada en los ganglios linfáticos cervicales en remisión espontánea, que desarrolló posteriormente una obstrucción subaguda de las vías respiratorias. La tomografía computarizada y la nasofaringolaringoscopía mostraron lesiones subglóticas que obstruían severamente las vías respiratorias. Se realizó una traqueostomía de emergencia y biopsia de las lesiones, confirmando el diagnóstico de ERD extranodal.

ABSTRACT Rosai-Dorfman disease or sinus histiocytosis with massive lymphadenopathy is a rare disease of unknown etiology characterized by bilateral massive cervical lymphadenopathy. Extranodal involvement can occur in different sites including airway where nasosinusal involvement is common but this disease may occur in other sites of the upper airway. Laryngeal involvement is rare. We present the case of an 82-year-old female patient with a history of Rosai-Dorfman disease located in cervical lymph nodes in spontaneous remission that subsequently develops airway obstruction. Computed tomographic scan and nasopharyngolaryngoscopy showed subglottic lessons that severely obstructed the airway. Emergency tracheotomy and biopsy were performed, confirming the diagnosis of extranodal RDD. Patient was observed and tracheostomy was maintained with good tolerance.

Influencia de la estimulación cerebral profunda en la carga de cuidadores de pacientes con enfermedad de Parkinson / Deep brain stimulation for patients with Parkinson's disease: Effect on caregiver burden

INTRODUCCIÓN: Nuestro objetivo es determinar el grado de carga de cuidadores de pacientes con enfermedad de Parkinson en tratamiento con estimulación cerebral profunda (ECP) con respecto a aquellos en estadios avanzados con otros tratamientos y las variables asociadas a la presencia de sobrecarga. MATERIAL Y MÉTODOS: Se incluyeron de forma consecutiva pacientes con enfermedad de Parkinson en tratamiento con ECP, utilizando como grupo control a otros con enfermedad de Parkinson en estadio avanzado sin ECP. Los pacientes fueron sometidos a una valoración mediante las escalas UPDRS-II, UPDRS-III, UPDRS-IV, Hoehn y Yahr, Schawb & England, Barthel, PDQ-39, MoCA, Apathy Scale, HADS y la QUIP abreviada. A los cuidadores se les estudió mediante el inventario de sobrecarga de Zarit y de valoración afectiva HADS. RESULTADOS: Se incluyeron 11 pacientes en tratamiento con ECP y 11 con otros tratamientos. En aquellos con ECP se observó una mejor calidad de vida según la escala PDQ-39 (p = 0,028), y una menor puntuación en la subescala HADS para la ansiedad (p = 0,010). Se observó sobrecarga en un 54,5% de los cuidadores de pacientes de ambos grupos (p = 1,000), con una puntuación similar en la escala Zarit (p = 0,835). La presencia de sobrecarga se asoció a una mayor puntuación en la escala de apatía (p = 0,048) y en la subescala HADS de ansiedad en el cuidador (p = 0,006). CONCLUSIÓN: Según los resultados de nuestro estudio el tratamiento con ECP no se relaciona con una menor carga del cuidador, siendo la apatía del paciente y la ansiedad del cuidador factores asociados a su desarrollo

INTRODUCTION: Our aim is to assess the burden on caregivers of patients with Parkinson's disease treated with deep brain stimulation (DBS) compared to those caring for patients at advanced stages and undergoing other treatments. We have also assessed the variables associated with presence of caregiver overload. MATERIAL AND METHODS: We included consecutive patients with Parkinson's disease treated with DBS. Our control group included patients in advanced stages of Parkinson's disease undergoing other treatments. Patients were assessed with the following scales: UPDRS-II, UPDRS-III, UPDRS-IV, Hoehn and Yahr, Schwab & England, Barthel, PDQ-39, MoCA, Apathy Evaluation Scale, HADS, and the abbreviated QUIP. Caregiver burden was evaluated with the Zarit caregiver burden interview and their moods were assessed with the HADS scale. RESULTS: We included 11 patients treated with DBS and 11 with other treatments. For patients treated with DBS, we observed a better quality of life according to the PDQ-39 questionnaire (P = .028), and a lower score on the HADS anxiety subscale (P = .010). Caregiver overload was observed in 54.5% of the caregivers of patients in both groups (P = 1.000); Zarit scores were similar (P = .835). Caregiver overload was associated with higher scores on the caregiver's Apathy Evaluation Scale (P = .048) and on the HADS anxiety subscale (P = .006). CONCLUSION: According to our results, treatment with DBS is not associated with lower caregiver burden. Apathy in patients and anxiety in caregivers are factors associated with the appearance of overload

Deep brain stimulation for patients with Parkinson's disease: Effect on caregiver burden. / Influencia de la estimulación cerebral profunda en la carga de cuidadores de pacientes con enfermedad de Parkinson.

INTRODUCTION: Our aim is to assess the burden on caregivers of patients with Parkinson's disease treated with deep brain stimulation (DBS) compared to those caring for patients at advanced stages and undergoing other treatments. We have also assessed the variables associated with presence of caregiver overload. MATERIAL AND METHODS: We included consecutive patients with Parkinson's disease treated with DBS. Our control group included patients in advanced stages of Parkinson's disease undergoing other treatments. Patients were assessed with the following scales: UPDRS-II, UPDRS-III, UPDRS-IV, Hoehn and Yahr, Schwab & England, Barthel, PDQ-39, MoCA, Apathy Evaluation Scale, HADS, and the abbreviated QUIP. Caregiver burden was evaluated with the Zarit caregiver burden interview and their moods were assessed with the HADS scale. RESULTS: We included 11 patients treated with DBS and 11 with other treatments. For patients treated with DBS, we observed a better quality of life according to the PDQ-39 questionnaire (P=.028), and a lower score on the HADS anxiety subscale (P=.010). Caregiver overload was observed in 54.5% of the caregivers of patients in both groups (P=1.000); Zarit scores were similar (P=.835). Caregiver overload was associated with higher scores on the caregiver's Apathy Evaluation Scale (P=.048) and on the HADS anxiety subscale (P=.006). CONCLUSION: According to our results, treatment with DBS is not associated with lower caregiver burden. Apathy in patients and anxiety in caregivers are factors associated with the appearance of overload.

Prevalencia del dolor irruptivo asociado al dolor crónico por lumbalgia en Andalucía (estudio COLUMBUS) / Prevalence of breakthrough pain associated to chronic low back pain in Andalusia (COLUMBUS study)

Introducción: El dolor lumbar crónico tiene una alta prevalencia en los países industrializados, donde es una de las principales causas de incapacidad laboral. Con frecuencia, los pacientes con dolor lumbar crónico en tratamiento con opiáceos sufren episodios de dolor irruptivo, pero los datos de prevalencia y preferencias de tratamiento son escasos. La prevalencia, características y manejo del dolor irruptivo de pacientes con dolor crónico de origen lumbar en Andalucía y Melilla es desconocida. Objetivos: 1. Evaluación de la prevalencia del dolor irruptivo en pacientes con dolor crónico secundario a lumbalgia crónica en Andalucía y Melilla (objetivo primario). 2. Caracterización del dolor irruptivo en pacientes con dolor crónico secundario a lumbalgia crónica basado en la etiología, patología, así como en otras características clínicas. 3. Evaluación de la prevalencia de cada una de las diferentes causas de dolor. 4. Identificar las posibles asociaciones entre los diferentes tipos de dolor irruptivo y aspectos sociodemográficos, clínicos y asistenciales. Material y métodos: En el estudio de prevalencia del dolor irruptivo participaron 1.868 pacientes y en el de caracterización 295 pacientes. En el estudio de prevalencia se recogieron las siguientes variables: presencia de dolor irruptivo, sexo y edad. En el estudio de caracterización se recogieron datos relativos al tipo y localización del dolor, tratamiento, cumplimiento y satisfacción del paciente. Resultados: La prevalencia del dolor irruptivo en pacientes con dolor crónico secundario a lumbalgia crónica es del 37,5 % (IC 95 %: 35,3-39,7 %), y es similar en hombres y mujeres. Un 75 % de los pacientes son mayores de 50 años. La media de dolor irruptivo fue de 84,4 puntos en la escala visual analógica (EVA). El tratamiento del dolor crónico es tratado con una amplia gama de opiáceos. El fármaco preferente de los pacientes que controlan el dolor irruptivo con opiáceos es fentanilo (78,3 %) y la forma de administración más común de este es la nasal (53,2 %). El grado de cumplimiento es alto y un 46,3 % de los pacientes consideran muy satisfactorio el control de su dolor irruptivo. Conclusiones: Los datos epidemiológicos sobre el dolor irruptivo en Andalucía y Melilla generados por este estudio nos ha permitido conocer su prevalencia y características, así como los tratamientos preferidos y el grado de satisfacción de los pacientes (AU)

Introduction: Chronic low back pain is highly prevalent in industrialized countries, where it is one of the main causes of incapacity for work. Patients with chronic low back pain in treatment with opioids often experience episodes of breakthrough pain, but prevalence and treatment preferences data are scarce. The prevalence, characteristics, and management of breakthrough pain of patients with chronic pain of lumbar origin in Andalusia and Melilla are unknown. Objectives: 1. Evaluation of the prevalence of breakthrough pain in patients with chronic pain secondary to chronic low back pain in Andalusia and Melilla (primary endpoint). 2. Characterization of breakthrough pain in patients with chronic pain secondary to chronic low back pain based on etiology, pathology, and other clinical characteristics. 3. Assessment of the prevalence of each of the different causes of pain. 4. Identify the possible associations between different types of breakthrough pain and sociodemographic, clinical and healthcare factors. Materials and methods: 1,868 patients participated in the study of prevalence of breakthrough pain and 295 patients participated in the characterization study. In the prevalence study the following variables were collected: presence of breakthrough pain, sex and age. In the characterization study data were collected regarding the type and location of pain, treatment, compliance, and patient satisfaction. Results: The prevalence of breakthrough pain in patients with chronic pain secondary to chronic low back pain is 37.5 % (95 % CI: 35.3-39.7 %), and is similar in men and women. 75% of the patients are older than 50 years. The mean value of breakthrough pain was 84.4 points in a visual analogue scale (VAS). Chronic lumbar pain is treated with a wide range of opiates. The preferred drug of patients who control breakthrough pain with opioids is fentanyl (78.3 %) and its most common form of administration is nasal (53.2 %). The degree of compliance is high and 46.3 % of patients consider the control of their breakthrough pain very satisfactory. Conclusions: Epidemiological data on the breakthrough pain in Andalusia and Melilla generated by this study has allowed us to know its prevalence and characteristics, as well as the preferred treatments and the degree of satisfaction of the patients (AU)

Oftalmoparesia dolorosa episódica asociada a rinosinusitis aguda recurrente: un caso de síndrome de Tolosa Hunt / Painful episodic ophtalmoparesis associated to acute recurrent rhinosinusitis: a case of Tolosa Hunt Syndrome

El síndrome de Tolosa Hunt es un cuadro inflamatorio del seno cavernoso, idiopático y caracterizado por uno o más episodios de dolor orbital unilateral asociado o seguido de paresia oculomotora (afección del III, IV y VI nervio craneal) y en ocasiones con compromiso de la rama maxilar del nervio trigémino. Nosotros presentamos un hombre de 27 años con episodios de oftalmoparesia dolorosa derecha concomitantes a cuadros de rinosinusitis agudas. Su estudio fue negativo y en una de sus recurrencias se encontró en la RM de alta resolución de senos cavernosos, compromiso inflamatorio con captación de gadolinio de los nervios III, IV, V2 y VI derechos. Dado los hallazgos, se planteó el diagnóstico de STH exacerbado por la rinosinusitis e inició tratamiento corticoidal prolongado.

Tolosa Hunt Syndrome is the idiopathic inflammation of cavernous sinus, characterized by one or more episodes of unilateral orbital pain followed by ophtalmoparesis (III, IV o VI nerve palsy) and sometimes the affection of maxillary branch of the trigeminal nerve. We describe the case of a 27 years old man with episodes of painful right ophtalmoparesis associated with acute rhinosinusitis. On high resolution MRI there was inflammation of the III, IV, V2 and VI right nerves with gadolinium enhancement. We propose the THS diagnosis exacerbated by rhinosinusitis and started on chronic steroid therapy.

Tumor mesenquimatoso fosfatúrico de fosa nasal con compromiso intracraneano: reporte de un caso y revisión de la literatura / Nasal fossa phosphaturic mesenchymal tumor with intracraneal compromise: case report and review of the literature

El tumor mesenquimatoso fosfatúrico (TMF) es una enfermedad extremadamente rara. Según evidencia reciente es causado por la sobreexpresión del factor de crecimiento fibroblástico 23 (FGF23), el cual genera hipofosfemia y osteomalacia. A continuación presentamos el caso de un paciente de 42 años con un tumor mesenquimatoso fosfatúrico de fosa nasal izquierda con extenso compromiso intracraneano. Cabe destacar que hasta la fecha hay 142 casos reportados de TMF en la literatura de los cuales solo 11 se ubican en fosa nasaly cavidades sinusales, y sólo dos de ellos ubicados en fosa nasal¹. El paciente tuvo una exitosa resolución quirúrgica con la consecuente normalización de parámetros analíticos (incluido el FGF23), mejoría sintomática y ausenia de recidiva hasta la fecha.

The phosphaturic mesenchymal tumor (PMT) is an extremely rare disease. According to recent evidence is caused by overexpression of fibroblast growth factor 23 (FGF23) which generates hypophosphatemia and osteomalacia. We report the case of a 42 year old patient with a left nasal fossa phosphaturic mesenchymal tumor with intracranial involvement. Should be noted that to date there are 142 reported cases of PMT in the literature of which only 11 are located in nasal fossa and sinus cavities, two of them located in nasal fossa¹. The patient had a successful surgical resolution with consequent normalization of analytical parameters (including FGF23), absence of symptoms and no recurrence to date.

Modification of loco-regional microenvironment in brain tumors by spinal cord stimulation. Implications for radio-chemotherapy.

The effectiveness of radiotherapy and chemotherapy in high grade gliomas (HGG) depends on tumor micro-environment. We summarize our experience of the influence of spinal cord stimulation (SCS) on this micro-environment. Patients with HGG (n = 26) were assessed pre- and post-SCS, using: (1) Doppler in middle cerebral arteries (MCA) and (2) in common carotid arteries (CCA); (3) tumor blood-flow using single photon emission computed tomography (SPECT); (4) tumor-pO(2) (mmHg) using polarographic probes (eight tumor areas from five patients); and (5) tumor glucose metabolism using (18)F-fluoro-2-deoxyglucose ((18)FDG) positron emission tomography ((18)FDG-PET). Pre-SCS: tumor blood-flow was lower (P < 0.001) than peri-tumor areas and healthy contra-lateral areas. Tumor-pO(2) was lower (P < 0.042) than healthy tissue. Tumor glucose metabolism was higher than peri-tumor areas (P = 0.017) and healthy contra-lateral areas (P = 0.048). Post-SCS: there were increases in: MCA blood-flow (P ≤ 0.002), CCA blood-flow (P ≤ 0.013), tumor blood-flow (P = 0.033), tumor glucose metabolism (P = 0.027) and tumor-pO(2) (P = 0.022). The percentage of hypoxic values decreased (P = 0.007). SCS can modify tumor micro-environment. The potential usefulness of SCS in improving the effectiveness of radio-chemotherapy in HGG needs to be evaluated.

Colleras obstruidas: ¿Qué hacer?: un modelo experimental ex vivo / Clearing blocked tympanostomy tubes: an ex-vivo model

Introducción: La obstrucción del lumen de las colleras es un evento infrecuente, pero que anula la efectividad del dispositivo en la ventilación del oído medio. Existen múltiples opciones de tratamiento tópico para esta situación clínica, sin embargo, los reportes en la literatura al respecto presentan resultados contradictorios. Objetivos: Analizar la efectividad de distintos tratamientos tópicos para destapar una collera ocluida con coágulo de sangre. Material y método: Modelo experimental ex vivo, 184 tubos de ventilación obstruidos con coágulo de sangre. Tratamiento tópico, 8 grupos experimentales (agua oxigenada 3 por ciento, ácido acético 5 por ciento, ciprofloxacino 0,3 por ciento, vinagre de mesa, heparina, mezcla de H2O2/acetato 1:1, suero fisiológico 0.9 por ciento) y 2 grupos control (sin tratamiento). Revisión de permeabilidad de lumen de colleras a los 3, 7 y 10 días. Resultados: El agua oxigenada (H2O2) resulta ser el tratamiento más efectivo (88 por ciento y 92 por ciento de efectividad a los 7 y 10 días). Ciprofloxacino, vinagre de mesa, suero fisiológico y heparina son inefectivos, sin diferencias significativas con grupo control. Ciprofloxacino y suero fisiológico sedimentan más, e incluso tapan colleras previamente permeables. Conclusiones: H2O2 es un tratamiento seguro, efectivo y económico para destapar colleras obstruidas con coágulos de sangre.

Introduction: Blocked tympanostomy tubes (TT) are an uncommon event, but avoids the effectiveness of this device in middle ear ventilation. Many topical treatment options are available for this clinical situation, however, reports in literature show conflicting results. Aim: Analyze the effectiveness of various topical treatments to open blood clot blocked TT. Material and Method: Ex vivo experimental model. 184 blood clot blocked TT. Topical treatment, 8 experimental groups (3 percent hydrogen peroxide, 5 percent acetic acid, 0,3 percent ciprofloxacin, vinegar, heparin, mixture 1:1 H2O2/acetate, 0.9 percent saline) and 2 control group (no treatment). Review of tube permeability at 3, 7 and 10 days of treatment. Results: H2O2 is the most effective treatment (88 percent & 92 percent effectiveness at 7 & 10 days). Ciprofloxacin, vinegar, saline and heparin are ineffective, with no statistical differences with control group. Ciprofloxacin and saline even blocked previously opened TT. Conclusions: H2O2 is a safe, effective and economic treatment to clear blood clot blocked TT.

Evaluación de la deglución con nasofibroscopia en pacientes hospitalizados: factores predictivos y seguimiento intrahospitalario: Experiencia en un hospital clínico universitario / Functional endoscopic evaluation of swallowing among hospitalized patients

Background: Swallowing disorders are common in hospitalized patients. Functional endoscopic evaluation of swallowing (FEES) is a simple, safe and effective test for the diagnosis and monitoring of these disorders. Aim: To report the results of functional endoscopic swallowing evaluation. Material and Methods: Retrospective review of all records of functional swallowing evaluation procedures performed in a 6 months period. Results: A total of 327 evaluations were analyzed. Sixty seven percent were performed for the first time in a patient and 32.4 percent were follow-up evaluations. Mean age of patients was 73 ± 17 (SD) years and 56 percent were male. Twenty nine percent had prolonged orotracheal intubation (> 48 hours). Swallowing was evaluated as normal, mildly, moderately and severely altered in 8.2, 27, 27 and 38 percent of cases, respectively. Age (> 50 years) and orotracheal intubation were the most important predictors of severity (p = 0,01). Oral feeding was achieved during hospital stay in 78 and 55 percent of patients with moderate or severe swallowing disorders, respectively, after a delay of 8.7 and 14.3 days, respectively. Having a severe swallowing disorder during the first evaluation, increased fourfold the risk of gastrostomy. Conclusions: Most hospitalized patients with swallowing disorders achieve oral feeding before leaving hospital. Safe oral feeding is delayed as swallowing disorder is of greater severity.

[Functional endoscopic evaluation of swallowing among hospitalized patients]. / Evaluación de la deglución con nasofibroscopia en pacientes hospitalizados: factores predictivos y seguimiento intrahospitalario. Experiencia en un hospital clínico universitario.

BACKGROUND: Swallowing disorders are common in hospitalized patients. Functional endoscopic evaluation of swallowing (FEES) is a simple, safe and effective test for the diagnosis and monitoring of these disorders. AIM: To report the results of functional endoscopic swallowing evaluation. MATERIAL AND METHODS: Retrospective review of all records of functional swallowing evaluation procedures performed in a 6 months period. RESULTS: A total of 327 evaluations were analyzed. Sixty seven percent were performed for the first time in a patient and 32.4% were follow-up evaluations. Mean age of patients was 73 ± 17 (SD) years and 56% were male. Twenty nine percent had prolonged orotracheal intubation (> 48 hours). Swallowing was evaluated as normal, mildly, moderately and severely altered in 8.2, 27, 27 and 38% of cases, respectively. Age (> 50 years) and orotracheal intubation were the most important predictors of severity (p = 0,01). Oral feeding was achieved during hospital stay in 78 and 55 % of patients with moderate or severe swallowing disorders, respectively, after a delay of 8.7 and 14.3 days, respectively. Having a severe swallowing disorder during the first evaluation, increased fourfold the risk of gastrostomy. CONCLUSIONS: Most hospitalized patients with swallowing disorders achieve oral feeding before leaving hospital. Safe oral feeding is delayed as swallowing disorder is of greater severity.

Variantes anatómicas relevantes en tomografía computarizada de cavidades perinasales / Remarkable anatomic variations on paranasal CT scans

Introducción: La anatomía ósea de las cavidades perinasales (CPN) es altamente variable, pudiendo ser causa o factor predisponente de patología rinosinusal, o servir de reparo anatómico para la cirugía endoscópica nasal (CEN). Objetivos: Conocer la frecuencia de variaciones anatómicas en pacientes que consultan en nuestra Red de Salud. Material y método: Revisión retrospectiva de todas las tomog rafias computarizadas (TC) de CPN, realizadas en el Servicio de Radiología de la Red de Salud UC entre abril y junio de 2009. Resultados: Se encontraron las distintas variantes anatómicas en frecuencias similares a las descritas en la literatura internacional. Se estudió también la trayectoria de la arteria etmoidal anterior (AEA), y la configuración del techo etmoidal, utilizando la clasificación de Keros. Conclusiones: La frecuencia de variaciones anatómicas encontrada en nuestra revisión es similar a la descrita en la literatura internacional. La mayoría de nuestros pacientes presenta configuración de techo etmoidal tipo Keros I, hallazgo diferente al reportado en otras series. El estudio metódico de las variantes anatómicas en TC de CPN nos permitiría evitar complicaciones quirúrgicas.

Introduction: Paranasal sinus anatomy is quite variable. Some variations are involved in rinosinusal pathology, others are landmarks ofFESS (functional endoscopic sinus surgery). Aim: To determine the frecuency of paranasal anatomic variations in our consulting population. Material and method: Retrospective revision of all paranasal CT scans achieved in our Radiology Service during a two month period during 2009. Results: We found most of ethmoid anatomic variations, with similar frecuencies as described in literature. We also studied anterior ethmoidal artery anatomy, and ethmoid roof configuration, using Keros classification Conclusions: We found, in general, similar frecuencies as described in foreign series. More than half of our patients had Keros I ethmoid roof configuration type, a differing result from most of other series. Every ENT surgeon should be trained in routine search of these variations, helping to avoid possible surgical complications.

Parotiditis aguda en recién nacido / Neonatal acute parotitis

La parotiditis aguda supurativa es una enfermedad extremadamente infrecuente en el recién nacido, sin casos publicados hasta ahora en la literatura nacional y con pocos casos descritos en la literatura médica mundial. La infección ocurre habitualmente por vía ascendente desde la cavidad oral al conducto de Stenon, o asociado a sialectasia, aunque también se ha descrito a la deshidratación y la septicemia con extensión hacia la glándula parótida como probables mecanismos patogénicos. Se presenta el caso de un neonato de 13 días, sin antecedentes perinatales de relevancia, del Hospital Roberto del Río, que presenta cuadro de 12 horas de evolución caracterizado por irritabilidad, fiebre, aumento de volumen parotídeo derecho, doloroso, eritematoso y salida de pus por el conducto de Stenon. Se realiza diagnóstico clínico, microbiológico e imagenológico, con aislamiento de Staphylococcus aureus multisensible de la secreción parotídea. Se inicia tratamiento con cefotaximo y cloxacilina, con respuesta favorable. A partir del presente caso realizamos una revisión bibliográfica, para discutir el enfoque diagnóstico, terapéutico y pronóstico de esta patología.

Neonatal acute suppurative parotitis is an extremely uncommon disease in newborns, without any published cases in national literature. Thought ascending infection from oral cavity to Stenon's duct and sialectasia are most common pathological mechanisms, dehydration and septicemia with parotid extension has been proposed as other potential pathways. We present a 13 days neonate, without perinatal history, from Roberto del Río Pediatric Hospital, presenting 12 hours of fever, pain, irritability, right parotid swelling and purulent secretion from right Stenon's duct. Clinical, microbiological and radiological diagnosis was made, isolating multisensible Staphylococcus aurous from secretion cultures. Antibiotic treatment (cefotaxime plus cloxaciline) was initiated, with a successful course. From this case, we reviewed literature for further discussion of diagnostic, therapeutic and prognosis of this disease.

Auto-antibodies, HLA and PTPN22: susceptibility markers for rheumatoid arthritis.

OBJECTIVE: To analyse the relationship between the presence of auto-antibodies [rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP)], HLA-DRB1 alleles and PTPN22 1858 C/T polymorphism and test the value of their combination as susceptibility markers for rheumatoid arthritis (RA). METHODS: Patients with early arthritis were included. At entry in the cohort or during follow-up, 191 patients fulfilled the criteria for RA and 184 individuals suffered from other arthropathies. RF was measured by nephelometry and anti-CCP antibody by enzyme-linked immunosorbent assay. HLA class II alleles were determined by polymerase chain reaction. Samples were genotyped for PTPN22 1858C/T variants using a TaqMan 5'-allele discrimination assay. RESULTS: The presence of shared epitope (SE) alleles was strongly associated with anti-CCP and RF-positive RA [P = 7.05 x 10(-10), odds ratio (OR) 4.57, 95% confidence interval (CI) 2.76-7.57 and P = 1.68 x 10(-6), OR 2.99, 95% CI 1.89-4.74, respectively). The combination of the PTPN22 1858T variant and anti-CCP antibodies gave a high specificity for the disease, and was significantly associated with RA (P = 8.86 x 10(-5), OR 10.05, 95% CI 1.88-53.73). CONCLUSION: The combination of the T variant of the 1858 polymorphism of the PTPN22 gene in combination with the presence of anti-CCP antibodies, preferentially in a SE-positive individual, is associated with the development of RA.

Neurological evaluation of patients with Gaucher disease diagnosed as type 1.

Type 1 Gaucher disease (GD1) is characterised by lack of central nervous system involvement; however, there are several reports of associated neurological manifestations. The aim of this study was to systematically evaluate neurological manifestations in 31 patients with GD1 (12 males and 19 females; mean age 39.4 (range 5-77) years). Participants underwent a complete neurological examination and cognitive tests. Investigation of symptoms and medication intake, and motor and sensory electroneurograms were obtained. 30.7% of adult patients had neurological deficits, including psychomotor delay, parkinsonism, dementia, impaired saccadic ocular movements and peripheral nerve dysfunction. Three patients were redefined as type 3 GD. Electrodiagnosis was performed on 15 patients; 26.7% had reduced amplitude and/or abnormal waveforms in at least three nerves, 33.3% had a mild reduction in amplitude of two nerves and 40% had amplitude reduction in one nerve. Patients with three or more affected nerves had additional neurological symptoms. Our results demonstrate that neurological alterations occur in patients diagnosed with GD1, and subclinical peripheral neuropathy is a frequent finding.

Cerebral blood flow increase in cancer patients by applying cervical spinal cord stimulation.

INTRODUCTION: Generally, high-grade gliomas and head and neck tumors have decreased loco-regional blood flow resulting in reduced delivery of chemotherapy and oxygen, as well as an increases in radiation resistance to radiotherapy. The aim of this study was to analyze the effect of cervical spinal cord electrical stimulation (cSCS) on cerebral blood flow in patients with those tumors. PATIENTS AND METHODS: We have evaluated 27 cancer patients with 12 with high grade gliomas and 15 with advanced head and neck tumors, who had cSCS devices placed after tumor diagnoses and before the commencement initiating of radio-chemotherapy. They were 12 high grade gliomas and 15 advanced head and neck tumors. Before and after cSCS, cerebral blood flow was assessed bilaterally by transcranial Doppler. RESULTS: During cSCS there was a significant (p<0.001) increase in systolic (mean > 22%) and diastolic (> 29%) blood-flow velocities in both, healthy and tumor middle cerebral arteries. The analyses by subgroup of tumors showed similarly significant outcomes findings. CONCLUSIONS: The results suggest that neuro-stimulation spinal cord electrical stimulation can increase cerebral blood flow in cancer patients. The implication is that this technique could be useful in modifying locoregional ischemia in brain tumors thus improving the outcomes of after radio-chemotherapy. Further research is in progress to confirm the advantages of the technique.