SUMMAR Y — Sudden changes in respiratory patterns observed during polysomnographic stu­ dies may suggest a positional form of SAH S (sleep apnea-hypopnea syndrome). We report the case of a 37-year-old patient with Steinert's disease with this form of SAHS . Breathing during sleep could be regularized by a simple positional control.

SUMMARY — Sudden changes in respiratory patterns observe stud durin­g polysomnographicdies may suggest a positiona SAHl for (sleeS m of p apnea-hypopnea syndrome). We report the case of a 37-year-old patien Steinert't wit diseash s e wit thi forhs m o SAHSf Breathin. g during sleep could be regularized by a simple positional control. KEY WORI>S slee apnea-hypopne: p (SAHS)a syndrom Steinert', diseasee ,s positional sleep apnea-hypopnea syndrome. Efeito da posicao corporal sobre disturbio respiratori aoo relacionad sono em um paciento e com doenc dae Steinert, RESUMO — A observacao de mudanca padras abrupta respiratorio s do o durante estudo poli­grafico do sono pode sugeri estamor qu diantse e de sindrome de apneia-hipopneia ligada ao sono (SAHS associad) a a postura adotada durante o sono pelo paciente. Relatamos o caso de um paciente de 37 anos com doenc esta form dae Steinera d SAHSe At. e respiracao durante o sono pode ser regularizada por simples controle postural.