Evaluation of bendopnea in severe obstructive sleep apnea syndrome

Background: Bendopnea is a symptom described in heart failure (HF) that is related to short-term prognosis; however, its frequency and characteristics in respiratory diseases such as OSAS is still unknown. This study was carried out to evaluate the prevalence of bendopnea in patients with severe obstructive sleep apnea syndrome (OSAS)MethodsWe conducted a study of 95 patients attending a sleep disorders unit with severe OSAS. Bendopnea was considered when shortness of breath occurred within 30s of bending forward.ResultsBendopnea was present in 33/95 of the patients included (34.7%). The median age was 62 years (52–71), 65 were men (68.4%), with a median weight of 92 (81–107) and BMI of 34kg/m2 (±7.1). The median duration of shortness of breath was 5s (2–10). The presence of bendopnea was related to age (p<.0001), obesity (p .004), respiratory diseases (p .01) and HF (p .03). Admission rate was higher in those with bendopnea without reaching statistical significance.ConclusionOne-third of patients with severe OSAS present bendopnea. This symptom is related to a higher prevalence of comorbidities (HF, obesity and other respiratory diseases). It is also related to a higher CT90. (AU)

Antecedentes: La bendopnea es un síntoma descrito en la insuficiencia cardiaca (IC), relacionado con un pronóstico a corto plazo; sin embargo, se desconocen su frecuencia y características en enfermedades respiratorias como el síndrome de apnea obstructiva del sueño (SAOS). Este estudio fue realizado para evaluar la prevalencia de bendopnea en pacientes con síndrome de apnea obstructiva del sueño severo.MétodosRealizamos un estudio de 95 pacientes que acudieron a la unidad de trastornos del sueño con SAOS severo. Se consideró bendopnea cuando se producía dificultad respiratoria dentro de un plazo de 30s desde que el paciente se inclinaba hacia adelante.ResultadosSe presentó bendopnea en 33 de los 95 pacientes incluidos (34,7%). La edad media fue de 62 años (52-71), de los cuales 65 eran varones (68,4%) con un peso medio de 92 (81-107) e IMC de 34kg/m2 (±7,1). La duración media de la dificultad respiratoria fue de 5s (2-10). La presencia de bendopnea guardó relación con la edad (p<0,0001), obesidad (p 0,004), enfermedades respiratorias (p 0,01) e IC (p 0,03). La tasa de ingreso fue superior en aquellos pacientes con bendopnea, sin alcanzar significación estadística.ConclusiónUn tercio de los pacientes con SAOS severo presentan bendopnea. Este síntoma guarda relación con una mayor prevalencia de comorbilidades (IC, obesidad y otras enfermedades respiratorias). También se correlaciona con mayor CT90. (AU)

Evaluation of bendopnea in severe obstructive sleep apnea syndrome.

BACKGROUND: Bendopnea is a symptom described in heart failure (HF) that is related to short-term prognosis; however, its frequency and characteristics in respiratory diseases such as OSAS is still unknown. This study was carried out to evaluate the prevalence of bendopnea in patients with severe obstructive sleep apnea syndrome (OSAS) METHODS: We conducted a study of 95 patients attending a sleep disorders unit with severe OSAS. Bendopnea was considered when shortness of breath occurred within 30s of bending forward. RESULTS: Bendopnea was present in 33/95 of the patients included (34.7%). The median age was 62 years (52-71), 65 were men (68.4%), with a median weight of 92 (81-107) and BMI of 34kg/m2 (±7.1). The median duration of shortness of breath was 5s (2-10). The presence of bendopnea was related to age (p<.0001), obesity (p .004), respiratory diseases (p .01) and HF (p .03). Admission rate was higher in those with bendopnea without reaching statistical significance. CONCLUSION: One-third of patients with severe OSAS present bendopnea. This symptom is related to a higher prevalence of comorbidities (HF, obesity and other respiratory diseases). It is also related to a higher CT90.