Dimensional analysis of the upper airway in obstructive sleep apnoea syndrome patients treated with mandibular advancement device: A bi- and three-dimensional evaluation.

BACKGROUND: The efficiency of the mandibular advancement device (MAD) in patients with obstructive sleep apnoea syndrome (OSAS) has been demonstrated. Nevertheless, the behaviour of the upper airway once MAD is placed and titrated, and its correlation with the apnoea-hypopnoea index (AHI) is still under discussion. OBJECTIVES: To analyse the morphological changes of the upper airway through a bi- and three-dimensional study and correlate it with the polysomnographic variable, AHI. METHODS: Patients were recruited from two different hospitals for the treatment of OSAS with a custom-made MAD. A cone-beam computer tomography and a polysomnography were performed at baseline and once the MAD was titrated. RESULTS: A total of 41 patients completed the study. Treatment with MAD reduced the AHI from 22.5 ± 16.8 to 9.2 ± 11.6 (p ≤ .05). There was a significant increase of the total airway volume with MAD from 21.83 ± 7.05 cm3 to 24.19 ± 8.19 cm3 , at the expense of the oropharynx. Moreover, the correlation between the improvement of the AHI and the augmentation of the volume of the upper airway was not statistically significant. CONCLUSIONS: The oral device used in this prospective study increased the mean upper pharyngeal airway volume and significantly reduced the AHI. Future studies that measure the muscular tone are needed to completely understand the association between the AHI and the physiological and anatomical response of the upper airway.

Effectiveness of a mandibular advancement device in obstructive sleep apnea patients: a prospective clinical trial.

PURPOSE: This study aimed to determine the effectiveness of a mandibular advancement device in a sample of obstructive sleep apnea syndrome patients by the evaluation of respiratory and neurophysiologic parameters and clinical symptoms. Second, the influence of certain predictor factors related with the patient and the intraoral device, were considered in the final response with this treatment option. METHODS: Forty-one patients constituted the final sample. Outcomes were measured using polysomnography, Epworth sleepiness scale and an analogue visual snoring scale, before treatment and once the device was properly titrated. RESULTS: Mean apnea-hypopnea index decreased from 22.5 ± 16.8 to 9.1 ± 11.6 (p ≤ 0.05), influencing only gender and Fujita index as predictor factors. The oxygen saturation, arousal index, percentages of sleep stages and sleep efficiency significantly improved with the mandibular advancement device (MAD) placement. The snoring index improved in absolute terms in 6.1 units and the excessive daytime sleepiness was reduced from 12.2 ± 4.7 to 8.5 ± 3.8 (p ≤ 0.00). CONCLUSIONS: The successful treatment rate with the MAD was 65.8%. The placement and posterior regulation of the intraoral appliance efficiently reduced the apnea-hypopnea index, improved the sleep quality and the clinical symptomatology associated. Obstructive sleep apnea syndrome is a highly prevalent disease. and dentists should be aware of the benefits enhanced by this prosthetic device, considered the first treatment option by certain physicians.

Impact of an oral appliance on obstructive sleep apnea severity, quality of life, and biomarkers.

OBJECTIVE/HYPOTHESIS: To investigate outcomes including efficacy, quality of life, and levels of inflammatory markers of a mandibular advancement device (MAD) for moderate-to-severe obstructive sleep apnea (OSA). STUDY DESIGN: Case-control study. METHODS: Patients with apnea-hypopnea index (AHI) ≥ 15/hr who only accepted MAD therapy (study group) or who refused any treatment (control group) were recruited. At baseline and at 6 months, polysomnography, Epworth Sleepiness Scale (ESS), Functional Outcomes of Sleep Questionnaire (FOSQ), C-reactive protein (CRP), interleukin 1ß, interleukin 6, and tumor necrosis factor α (TNF-α) were assessed in both groups. RESULTS: At baseline, the study group (n = 30) showed a higher percentage of rapid eye movement sleep and higher CRP levels (P < .05) than the control group (n = 10). At 6 months, the MAD significantly improved AHI and lowest oxygen saturation (P < .01), non-rapid eye movement (N)1 and N3 sleep stages (P < .05), ESS score (P < .05), FOSQ total score (P < .01), interleukin 1ß (P < .05), and TNF-α (P < .01) compared with the untreated group. In the overall, moderate, and severe OSA groups, 63.3%, 75%, and 50%, respectively, achieved at least good response. CONCLUSIONS: Use of a MAD significantly improved polysomnographic parameters, quality of life, and some inflammatory markers (CRP, IL-ß, and TNF-α) in a significant proportion of patients with moderate OSA and in some patients with severe OSA. Hence, a MAD may be a viable alternative therapy in patients with moderate-to-severe OSA who refuse continuous positive airway pressure. LEVEL OF EVIDENCE: 3b. Laryngoscope, 128:1720-1726, 2018.

Surgical planning after sleep versus awake techniques in patients with obstructive sleep apnea.

OBJECTIVE/HYPOTHESIS: This study examined correlations between surgical recommendations based on either drug-induced sleep endoscopy (DISE) or common awake examination methods in patients with obstructive sleep apnea syndrome (OSAS). STUDY DESIGN: Prospective, blinded, clinical trial at a university hospital. METHODS: An otorhinolaryngologist designed surgical plans for patients with OSAS after clinical examination, lateral cephalometry, the Müller maneuver, and Friedman staging. A second otorhinolaryngologist blinded to the previous plans made surgical recommendations after DISE. A third person tested agreement between the two sets of plans using Cohen's kappa statistic and the chi-squared test. RESULTS: One hundred and sixty-two patients (15 females, 147 males) completed the protocol. Good correlation was observed between DISE and Friedman staging regarding recommendations for isolated oropharyngeal or multilevel surgery (kappa = 0.61). Correlations between DISE and clinical examination, lateral cephalometry, and the Müller maneuver regarding surgical procedures on specific structures contributing to upper airway obstruction ranged from fair for velum/tonsil surgery (k = 0.41-0.60) to poor (k = 0.01-0.20) for tongue-base, lateral pharyngeal wall, and epiglottal surgery. The most informative value was DISE versus clinical evaluation, lateral cephalometry, and the Müller maneuver, which changed surgical recommendations concerning the structures contributing to hypopharyngeal or laryngeal obstruction in > 40% of patients. CONCLUSIONS: Our results indicate that DISE provides more information about the anatomical locations and pattern of obstruction, particularly regarding the specific structures contributing to hypopharyngeal and laryngeal obstruction. DISE changes surgical decision making compared to awake evaluation methods.

Manejo de las otolicuorreas / Management of cerebrospinal fluid otorrhea

Introducción: Las fístulas de líquido cefalorraquídeo en el oído derivan de una comunicación anormal entre el espacio subaracnoideo y el timpanomastoideo, la mayoría de etiología traumática. Tienen gran interés desde el punto de vista clínico por el potencial riesgo de meningitis, directamente relacionado con la etiología. Nuestro objetivo es mostrar nuestra experiencia en el manejo de dicho proceso. Métodos: Presentamos un total de 17 pacientes diagnosticados y tratados de fístulas de líquido cefalorraquídeo en el oído desde el año 2003 hasta el 2011. Resultados: En nuestro estudio el mayor porcentaje de casos correspondían a otolicuorreas de tipo espontáneo, con una presentación clínica variada. El diagnóstico se basó en la determinación de la beta-2-transferrina y en estudios de imagen, especialmente importantes por su valor localizador del defecto. El tratamiento quirúrgico fue el de elección. Conclusiones: Las fístulas de líquido cefalorraquídeo en el oído constituyen una entidad rara en la patología otorrinolaringológica. Su diagnóstico se sospecha por signos característicos como la otolicuorrea, pérdida auditiva y sensación de plenitud ótica, mientras que la tomografía computarizada y la resonancia magnética nos ayudan a su localización. La cirugía es la técnica de elección, y su éxito se basa en la técnica multicapas con 2 o más materiales de soporte (AU)

Introduction: Cerebrospinal fluid otorrhea results from an abnormal communication between the subarachnoid space and tympanomastoid compartment; most of them are of traumatic aetiology. They have clinical interest due to the potential risk of meningitis, directly related to the aetiology. Our aim was to show our experience in the management of this process. Methods: A total of 17 patients diagnosed and treated for cerebrospinal fluid otorrhea from 2003 to 2011. Results: In our study, the highest percentage of cases was spontaneous cerebrospinal fluid otorrhea, with a wide clinical presentation. The diagnosis was based on the determination of beta-2-transferrin and radiological studies, especially important for its locator value. The treatment of choice was surgery. Conclusions: Cerebrospinal fluid otorrhea is a rare entity in otorhinolaryngological pathology. Its diagnosis is suspected through otorrhea, hearing loss and aural fullness, while computed tomography and magnetic resonance help us to locate the defect. Surgery is the preferred technique, and its success is based on multilayer technology with 2 or more support materials (AU)

Management of cerebrospinal fluid otorrhea.

INTRODUCTION: Cerebrospinal fluid otorrhea results from an abnormal communication between the subarachnoid space and tympanomastoid compartment; most of them are of traumatic aetiology. They have clinical interest due to the potential risk of meningitis, directly related to the aetiology. Our aim was to show our experience in the management of this process. METHODS: A total of 17 patients diagnosed and treated for cerebrospinal fluid otorrhea from 2003 to 2011. RESULTS: In our study, the highest percentage of cases was spontaneous cerebrospinal fluid otorrhea, with a wide clinical presentation. The diagnosis was based on the determination of beta-2-transferrin and radiological studies, especially important for its locator value. The treatment of choice was surgery. CONCLUSIONS: Cerebrospinal fluid otorrhea is a rare entity in otorhinolaryngological pathology. Its diagnosis is suspected through otorrhea, hearing loss and aural fullness, while computed tomography and magnetic resonance help us to locate the defect. Surgery is the preferred technique, and its success is based on multilayer technology with 2 or more support materials.

Documento de consenso del síndrome de apneas-hipopneas durante el sueño en niños (versión completa) / Consensus document on sleep apnea-hypopnea syndrome in children (full version)

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Doble anomalía de la segunda hendidura branquial / Double second branchial cleft anomaly

Las anomalías de la segunda hendidura branquial son las más comunes. Hay 4 tipos (clasificación de Bailey/Proctor) según su localización. El tipo II, que es el más común, está en contacto con los grandes vasos. Su forma de presentación es diversa, aunque la más frecuente es la quística. El tratamiento es quirúrgico con extirpación completa por cervicotomía para evitar recidivas. Presentamos el caso clínico extremadamente raro de un varón de 32 años con debut brusco de tumoración laterocervical derecha, con estudio de imagen que demuestra la presencia de doble quiste branquial. Revisamos en la literatura casos de simultaneidad de quistes branquiales(AU)

Second branchial cleft anomalies are the most common of this type of neck masses. They can be classified in four types (Bailey/Proctor classification) according to their location. Type II is the most common, and related to vital neck structures such as the carotid artery and jugular vein. Cysts are the most frequent among them. Management consists of surgical excision of the cyst and tract by cervicotomy to avoid recurrence. We present an extremely rare case of a 32-year-old male who presented a sudden appearance of a right lateral neck mass that was identified by an image study as a double branchial cleft cyst. A review of simultaneous branchial cleft cyst in the literature is also made(AU)

[Double second branchial cleft anomaly]. / Doble anomalía de la segunda hendidura branquial.

Second branchial cleft anomalies are the most common of this type of neck masses. They can be classified in four types (Bailey/Proctor classification) according to their location. Type II is the most common, and related to vital neck structures such as the carotid artery and jugular vein. Cysts are the most frequent among them. Management consists of surgical excision of the cyst and tract by cervicotomy to avoid recurrence. We present an extremely rare case of a 32-year-old male who presented a sudden appearance of a right lateral neck mass that was identified by an image study as a double branchial cleft cyst. A review of simultaneous branchial cleft cyst in the literature is also made.

Tratamiento quirúrgico en los trastornos respiratorios del sueño en los niños / Surgical treatment of sleep-related breathing disorders in children

El tratamiento quirúrgico de los trastornos respiratorios del sueño en el niño depende de la causa que provoque la obstrucción de la vía aérea superior (VAS), que puede localizarse en las fosas nasales, faringe (lo más frecuente hipertrofia amigdaloadenoidea), laringe, como la laringomalacia, o puede ser multinivel, como sucede en las enfermedades sindrómicas. La amigdaloadenoidectomía (AA) es la técnica quirúrgica más frecuentemente realizada, con una eficacia del 70–80%. Su objetivo es conseguir la normalización del cuadro respiratorio nocturno y de la clínica diurna, así como la reversión, o al menos el freno, de las complicaciones cardiovasculares, alteraciones neurocognitivas, retraso del crecimiento y enuresis, que pueden presentarse en los casos no tratados o tratados tardíamente. Ahora bien, aunque la AA ha mostrado una gran eficacia, no debemos olvidar que conlleva una incidencia de complicaciones en el postoperatorio inmediato mayor que en el caso de los niños intervenidos por otras causas. Por otro lado, un 20–30% de los niños con síndrome de apnea-hipopnea del sueño (SAHS), sometidos a AA presentará un SAHS residual, y hasta un 70% en casos de SAHS severo, anomalías craneofaciales, alteraciones neuromusculares y obesidad mórbida. Por consiguiente, se recomienda un seguimiento, tanto clínico como polisomnográfico, tras la AA, sobre todo en este último grupo de riesgo. Finalmente, aunque menos frecuentemente por su menor incidencia, habrá que tratar otras patologías obstructivas de la VAS, como estenosis o atresia de coanas, laringomalacia, hipoplasia mediofacial o mandibular, etc., y a veces habrá que recurrir a la traqueotomía(AU)

The surgical treatment of sleep-related breathing disorders in children depends on the cause of the upper airway obstruction, which can be located in the nasal fossae, pharynx (the most frequent adenotonsillar hyperplasia), or larynx (laryngomalacia, cysts…), or can be multilevel, as in syndromic diseases. Adenotonsillectomy is the most frequently performed and effective (70–80%) procedure. The aim of this technique is to normalize nocturnal respiratory parameters and daytime symptoms, as well as to revert, or at least to halt, cardiovascular complications, neurocognitive disturbances, growth delay and enuresis, which can develop if treatment is not provided or is delayed. However, despite its effectiveness, adenotonsillectomy more frequently leads to complications in children with sleep apnea-hypopnea syndrome (SAHS) than in those undergoing this procedure for other reasons. Moreover, 20–30% of children with SAHS who undergo adenotonsillectomy will show residual SAHS, and this percentage can increase to 70% in patients with severe SAHS, Down syndrome, craniofacial anomalies, neuromuscular disturbances, and morbid obesity.Consequently, both clinical and polysomnographic follow-up are recommended after adenotonsillectomy, especially in the latter risk group. Finally, other obstructive disorders of the upper airway must also be treated, although less frequently due to their lower incidence. These disorders include choanal atresia or stenosis, laryngomalacia, and hypoplasia of the midface or mandible. Tracheotomy will sometimes be required(AU)

[Surgical treatment of sleep-related breathing disorders in children]. / Tratamiento quirúrgico en los trastornos respiratorios del sueño en los niños.

The surgical treatment of sleep-related breathing disorders in children depends on the cause of the upper airway obstruction, which can be located in the nasal fossae, pharynx (the most frequent adenotonsillar hyperplasia), or larynx (laryngomalacia, cysts…), or can be multilevel, as in syndromic diseases. Adenotonsillectomy is the most frequently performed and effective (70-80%) procedure. The aim of this technique is to normalize nocturnal respiratory parameters and daytime symptoms, as well as to revert, or at least to halt, cardiovascular complications, neurocognitive disturbances, growth delay and enuresis, which can develop if treatment is not provided or is delayed. However, despite its effectiveness, adenotonsillectomy more frequently leads to complications in children with sleep apnea-hypopnea syndrome (SAHS) than in those undergoing this procedure for other reasons. Moreover, 20-30% of children with SAHS who undergo adenotonsillectomy will show residual SAHS, and this percentage can increase to 70% in patients with severe SAHS, Down syndrome, craniofacial anomalies, neuromuscular disturbances, and morbid obesity. Consequently, both clinical and polysomnographic follow-up are recommended after adenotonsillectomy, especially in the latter risk group. Finally, other obstructive disorders of the upper airway must also be treated, although less frequently due to their lower incidence. These disorders include choanal atresia or stenosis, laryngomalacia, and hypoplasia of the midface or mandible. Tracheotomy will sometimes be required.

Randomized study comparing two tongue base surgeries for moderate to severe obstructive sleep apnea syndrome.

OBJECTIVE: To compare the effectiveness and morbidity of the tongue base radiofrequency and tongue base suspension techniques combined with uvulopalatopharyngoplasty for moderate to severe obstructive sleep apnea. STUDY DESIGN AND SETTING: Prospective and randomized surgical trial at a university hospital. METHODS: In total, 57 patients received either tongue base radiofrequency reduction (n = 29) or tongue base suspension (n = 28). Apnea-hypopnea index, lowest oxygen saturation (polysomnography), Epworth score, and side effects were assessed. Success was defined as a > or =50 percent reduction and final apneahypopnea index < 15/h, and an Epworth score < 11. RESULTS: The success rates of the two procedures were 57.1 percent and 51.7 percent, respectively (P = 0.79), but only 12.5 percent and 10 percent, respectively (P = 0.87), in obese patients. Body mass index (P = 0.0002) was the main predictor of success in a logistic regression analysis. Tongue base suspension demonstrated higher morbidity (P < 0.05). CONCLUSIONS: The effectiveness of tongue base suspension was similar to that of tongue base radiofrequency reduction, although with significantly higher morbidity, for moderate to severe obstructive sleep apnea. The effectiveness of both techniques was lower in obese patients. SIGNIFICANCE: Neither technique should be used in obese patients who have moderate to severe obstructive sleep apnea.