Transient radiation-induced severe obstructive sleep apnea.

Unlabelled: Radiotherapy for head and neck cancer can trigger or worsen obstructive sleep apnea (OSA) due to factors such as neurological impairment, muscle atrophy, edema, and xerostomia. We present a case in which a patient developed severe OSA 3 months after undergoing radiochemotherapy and neck dissection for squamous cell carcinoma of the right lingual tonsil with regional metastasis. Polysomnography confirmed severe OSA.

Productive characteristics, chemical composition, in vitro digestibility, and degradation kinetics of two Brachiaria grasses at different regrowth ages.

The study aimed at the effect of different regrowth ages on chemical, productive, and morphological characteristics, in addition to the kinetics of gas production and in vitro digestibility of grasses of the genus Brachiaria. The treatments consisted of two regrowth ages (21 and 35 days) and two grass species (Brachiaria brizantha and B. ruziziensis), in plat with a dimension of 10 × 10 with four replications, totaling 16 plats in a completely randomized design.

Characteristics and prevalence of orofacial pain as an initial symptom of oral and oropharyngeal cancer and its impact on the patient's functionality and quality of life.

Objective: To evaluate the prevalence and characteristics of orofacial pain in oral and oropharyngeal cancer (OOC), at diagnosis.

Material And Methods: a) Study group (SG; n = 74) patients with cancer were divided into 2 subgroups: oral cancer (OC) and oropharyngeal cancer (OPC); b) control group (CG; n = 74) patients within dental care.

Study Design: An Orofacial Pain Assessment, verbal descriptive scale, Helkimo dysfunction index, Quality of Life questionnaire, and Karnofsky performance status (KPS) was used for evaluation.

The extracellular matrix of the lateral pharyngeal wall in obstructive sleep apnea.

Study Objectives: To compare the components of the extracellular matrix in the lateral pharyngeal muscular wall in patients with and without obstructive sleep apnea (OSA). This may help to explain the origin of the increased collapsibility of the pharynx in patients with OSA.

Design: Specimens from the superior pharyngeal constrictor muscle, obtained during pharyngeal surgeries, were evaluated using histochemical and immunohistochemical analyses to determine the fractional area of collagen types I and III, elastic fibers, versican, fibronectin, and matrix metalloproteinases 1 and 2 in the endomysium.

Tonsil volume, tonsil grade and obstructive sleep apnea: is there any meaningful correlation?

Objectives: The aims of this study were to evaluate the correlation between oropharyngeal examination and objective palatine tonsil volume in snoring adults and verify the influence of the oropharyngeal anatomy, body mass index, age, and severity of obstructive sleep apnea on actual tonsil volume. In addition, we aimed to assess the influence of tonsil size on obstructive sleep apnea in adults.

Introduction: Pharyngeal wall geometry is often altered in adults who have obstructive sleep apnea, and this might influence the findings of the oropharyngeal examination that, in turn, are the key factors when considering surgical management for this condition.