Treatment of moderate obstructive sleep apnea syndrome with acupuncture: a randomised, placebo-controlled pilot trial.
OBJECTIVE
To investigate the efficacy of acupuncture in the treatment of moderate obstructive sleep apnea syndrome (OSAS), assessed by polysomnography (PSG) and questionnaires of functional quality of life (SF-36) and excessive daytime sleepiness (Epworth).


METHODS
We performed a randomised, placebo-controlled, single-blinded study, with blinded evaluation on 36 patients presenting an apnea/hypopnea index (AHI) of 15-30/h, assessed by PSG. The study took place at the Public Hospital of the Universidade Federal de São Paulo, Brazil, in the Division of Sleep Disorders of the Department of Psychobiology, between January, 2002 and August, 2004. Patients were randomly assigned to three groups: the acupuncture group (n=12); the sham group, submitted to needle insertion in non-acupoints (n=12); and the control group, receiving no treatment (n=12). Patients received acupuncture or sham acupuncture once a week for 10 weeks.


RESULTS
Twenty-six patients completed the study. The AHI (P=0.005), the apnea index (AI) (P=0.008) and the number of respiratory events (P=0.005) decreased significantly in the acupuncture group but not in the sham group. On the other hand, the control group displayed significant deterioration in some of the polysomnographic parameters, with a significant increase in the number of respiratory events (P=0.025). Acupuncture treatment significantly improved (before vs. after treatment) several dimensions of the SF-36 and Epworth questionnaires. There was no significant association between changes in the body mass index (BMI) and AHI.


CONCLUSIONS
Acupuncture is more effective than sham acupuncture in ameliorating the respiratory events of patients presenting with moderate OSAS.
Freire
Anaflávia O
AO
Sleep Division, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
Sugai
Gisele C M
GC
Chrispin
Fernanda Silveira
FS
Togeiro
Sônia Maria
SM
Yamamura
Ysao
Y
Mello
Luiz Eugênio
LE
Tufik
Sérgio
S
D015670:Acupuncture Therapy / Q000379:methods*; D045422:Continuous Positive Airway Pressure / Q000379:methods*; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D017286:Polysomnography; D012720:Severity of Illness Index; D016037:Single-Blind Method; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy*; D012895:Sleep, REM / Q000502:physiology; D011795:Surveys and Questionnaires