Evaluation of the Impact of Body Position on Primary Central Sleep Apnea Syndrome.

OBJECTIVE: To evaluate the impact of the body position on primary central sleep apnea syndrome. METHODS: Fifty-five subjects diagnosed with central sleep apnea (CSA) through polysomnographic examinations were prospectively enrolled in the study. All patients underwent cardiologic and neurologic examinations. Primary positional central sleep apnea (PCSA) was determined when the supine Apnea-Hypopnea Index (AHI) was greater than two times the non-supine AHI. The primary PCSA and non-PCSA groups were compared in terms of demographic characteristics, sleep parameters, and treatment approaches. RESULTS: Overall, 39 subjects diagnosed with primary CSA were included in the study; 61.5% of the subjects had primary PCSA. There were no differences between the primary PCSA and non-PCSA groups regarding age, sex, body mass index (BMI), co-morbidities, and history of septoplasty. In terms of polysomnography parameters, AHI (P=.001), oxygen desaturation index (P=.002), the time spent under 88% saturation during sleep (P=.003), number of obstructive apnea (P=.011), mixed apnea (P=.009), and central apnea (P=.007) was lower in the primary PCSA group than in the non-PCSA group. Twenty-nine percent of the patients in the primary PCSA group were recommended position treatment and 71% were recommended positive airway pressure (PAP) therapy; all patients in the non-PCSA group were recommended PAP therapy. CONCLUSIONS: Our results demonstrated that the rate of primary PCSA was high (61.5%) and primary PCSA was associated with milder disease severity compared with non-PCSA. The classification of patients with primary CSA regarding positional dependency may be helpful in terms of developing clinical approaches and treatment recommendations.

Evaluation of the Impact of Body Position on Primary Central Sleep Apnea Syndrome / Evaluación del impacto de la posición corporal en el síndrome de apnea central del sueño primaria

Objective: To evaluate the impact of the body position on primary central sleep apnea syndrome.Methods: Fifty-five subjects diagnosed with central sleep apnea (CSA) through polysomnographic examinations were prospectively enrolled in the study. All patients underwent cardiologic and neurologic examinations. Primary positional central sleep apnea (PCSA) was determined when the supine Apnea–Hypopnea Index (AHI) was greater than two times the non-supine AHI. The primary PCSA and non-PCSA groups were compared in terms of demographic characteristics, sleep parameters, and treatment approaches.Results: Overall, 39 subjects diagnosed with primary CSA were included in the study; 61.5% of the subjects had primary PCSA. There were no differences between the primary PCSA and non-PCSA groups regarding age, sex, body mass index (BMI), co-morbidities, and history of septoplasty. In terms of polysomnography parameters, AHI (P=.001), oxygen desaturation index (P=.002), the time spent under 88% saturation during sleep (P=.003), number of obstructive apnea (P=.011), mixed apnea (P=.009), and central apnea (P=.007) was lower in the primary PCSA group than in the non-PCSA group. Twenty-nine percent of the patients in the primary PCSA group were recommended position treatment and 71% were recommended positive airway pressure (PAP) therapy; all patients in the non-PCSA group were recommended PAP therapy. (AU)

Objetivo: Evaluar el impacto de la posición del cuerpo en el síndrome de apnea central del sueño primaria.Métodos: En el estudio se incluyeron prospectivamente 55 sujetos con diagnóstico de apnea central del sueño (ACS) a través de sus estudios polisomnográficos. Todos los pacientes fueron sometidos a exámenes cardiológicos y neurológicos. La apnea central del sueño posicional (ACSP) se estableció cuando el índice de apnea-hipopnea (IAH) en posición supina fue más de dos veces mayor que el IAH en posición no supina. Se compararon los grupos de pacientes con ACSP primaria y sin ACSP en función de las características demográficas, los parámetros del sueño y los enfoques de tratamiento.Resultados: En total, se incluyeron en el estudio 39 sujetos con diagnóstico de ACS primaria. El 61,5% de los sujetos presentaban ACSP primaria. No hubo diferencias entre los grupos de ACSP primaria y sin ACSP con respecto a la edad, el sexo, el índice de masa corporal (IMC), las comorbilidades y los antecedentes de septoplastia. En cuanto a los parámetros de polisomnografía, el IAH (p=0,001), el índice de desaturación de oxígeno (p=0,002), el tiempo transcurrido con una saturación por debajo del 88% durante el sueño (p=0,003) y el número de apneas obstructivas (p=0,011), de apneas mixtas (p=0,009) y de apneas centrales (p=0,007) fueron menores en el grupo con ACSP primaria que en el grupo sin ACSP. Al 29% de los pacientes en el grupo de ACSP primaria se les recomendó tratamiento posicional y al 71% se les recomendó tratamiento de presión positiva de la vía aérea (PAP); a todos los pacientes del grupo sin ACSP se les aconsejó tratamiento PAP. (AU)