Abstract Introduction Obstructive sleep apnea (OSA) is a breathing disorder related to sleep that has a negative effect on the behavior and health of people around the globe. Chronic hypoxemia and variations in the concentration of oxygen in the blood noticed in OSA individuals may have adverse effects on the process of auditory transduction and transmission. Objective To assess the effect of OSA on hearing and to find out the parameters that have more influence on hearing recorded during polysomnography of patients with OSA. Methods The present is a hospital-based, observational, analytical, cross-sectional study conducted over a period of one year. After application of the exclusion criteria, the patients were then submitted to the application of the Berlin questionnaire, as well as polysomnography, impedance, and pure tone audiometry (PTA). Results A total of 58 individuals were studied. Age, gender, and height were comparable among cases and controls, while weight, body mass index (BMI), and neck circumference were significantly higher in cases in comparison to controls. The mean PTA was significantly higher at 10 kHz or higher frequencies in cases in comparison to controls. Conclusion We observed that there is evidence that the auditory mechanism is affected in OSA patients. We recommend early auditory screening of OSA patients for timely diagnosis and to raise awareness about its prevention.

RESUMO JUSTIFICATIVA: A succinilcolina é comumente usada para atingir um bloqueio neuromuscular profundo, de início rápido e de curta duração. OBJETIVO: Comparar a eficácia de pregabalina na prevenção de mialgia e fasciculação induzidas por succinilcolina. DESENHO: Estudo prospectivo, randômico, duplo-cego e controlado por placebo. MATERIAIS E MÉTODOS: Pacientes de ambos os sexos submetidos a cirurgia eletiva de coluna foram aleatoriamente divididos em dois grupos. Os pacientes do Grupo P (pregabalina) receberam 150 mg de pregabalina oral uma hora antes da indução da anestesia e os pacientes do Grupo C (controle) receberam placebo. A anestesia foi induzida com fentanil (1,5 mcg/kg) e propofol (1,5-2,0 mg/kg), seguidos de succinilcolina 1,5 mg/kg. A intensidade da fasciculação foi avaliada por um observador, cego para a alocação dos grupos, com uma escala de 4 pontos. Um observador cego registrou o grau pós-operatório de mialgia após 24 horas de cirurgia. Para o alívio da dor no pós-operatório, fentanil foi usado em sistema de analgesia controlada pelo paciente. RESULTADOS: Os dados demográficos de ambos os grupos eram comparáveis (p > 0,05). A incidência de fasciculação muscular não foi significativa entre os dois grupos (p = 0,707), enquanto mais pacientes do Grupo C apresentaram fasciculação de moderada a grave em relação ao Grupo P (p = 0,028). A incidência e a gravidade da mialgia foram significativamente menores no grupo P (p < 0,05). CONCLUSÃO: Pregabalina (150 mg) previne mialgia e fasciculação induzidas por succinilcolina, além de diminur o consumo de fentanil em cirurgia eletiva de coluna.

ABSTRACT BACKGROUND: Succinylcholine is commonly used to achieve profound neuromuscular blockade of rapid onset and short duration. OBJECTIVE: The present study compared the efficacy of pregabalin for prevention of succinylcholine-induced fasciculation and myalgia. DESIGN: Prospective, randomized, placebo controlled, double blinded study. MATERIALS AND METHODS: Patients of both genders undergoing elective spine surgery were randomly assigned to two groups. Patients in Group P (pregabalin group) received 150 mg of pregabalin orally 1 h prior to induction of anesthesia with sips of water and patients in Group C (control group) received placebo. Anesthesia was induced with fentanyl 1.5 mcg/kg, propofol 1.5-2.0 mg/kg followed by succinylcholine 1.5 mg/kg. The intensity of fasciculations was assessed by an observer blinded to the group allotment of the patient on a 4-point scale. A blinded observer recorded postoperative myalgia grade after 24 h of surgery. Patients were provided patient-controlled analgesia with fentanyl for postoperative pain relief. RESULTS: Demographic data of both groups were comparable (p > 0.05). The incidence of muscle fasciculation's was not significant between two groups (p = 0.707), while more patients in group C had moderate to severe fasciculation's compared to group P (p = 0.028). The incidence and severity of myalgia were significantly lower in group P (p < 0.05). CONCLUSION: Pregabalin 150 mg prevents succinylcholine-induced fasciculations and myalgia and also decreases the fentanyl consumption in elective sine surgery.

In this paper we characterize the boundedness, closed range, in-vertibility of the multiplication operators acting on sequence spaces w p(f) defined by a modulus function. We also make an efforts to study some properties of composition operators on these spaces.

In the present paper we introduce some generalized difference double sequence spaces defined by a sequence of Orlicz-functions. We study some topological properties and some inclusion relations between these spaces. We also make an effort to study these properties over n-normed spaces.

En este artículo introducimos algunos espacios de sucesiones doble-diferencia generalizadas definidas por una sucesión de funciones de Orlicz. Estudiamos algunas propiedades topológicas y algunas relaciones de inclusión entre estos espacios. Además, hacemos un esfuerzo para estudiar estas propiedades en espacios n normados.

In this paper we introduce difference entire sequence spaces and difference analytic sequence spaces defined by a sequence of modulus function F = (/¾) and study some topological properties and some inclusion relations between these spaces. We also make an effort to study some properties and inclusion relation between the spaces Tf(ÁÃ , u, p, q, ||., ···, .||) and Af(A^ , u, p, q, ||., ·· ·, .\\).

In the present paper we study difference sequence spaces defined by a sequence of modulus functions and examine some topological properties of these spaces.