Immediate effect of acupuncture on the sleep pattern of patients with obstructive sleep apnoea

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2010-09-01
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Freire, Anaflavia de Oliveira [UNIFESP]
Sugai, Gisele C. M. [UNIFESP]
Togeiro, Sonia Maria
Mello, Luiz Eugenio [UNIFESP]
Tufik, Sergio [UNIFESP]
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Background Most patients with obstructive sleep apnoea (OSA) do not tolerate treatment with nasal continuous positive airway pressure, the 'gold standard' treatment for this condition. It was shown in a pilot study that acupuncture was more effective than placebo treatment (sham acupuncture) in producing significant changes in the respiratory events assessed by polysomnography (PSG).Objectives To investigate the immediate effect of manual acupuncture (MA) and electroacupuncture (EA) on the sleep pattern of patients presenting with moderate OSA.Methods 40 patients with an Apnoea-Hypopnoea Index (AHI) of 15-30/h were randomly allocated to MA treatment (n=10), EA 10 Hz treatment (n=10), EA 2 Hz treatment (n=10) and a no-treatment control group (n=10). the patients received MA or EA (2 or 10 Hz) just before the PSG study at 20:00.Results the AHI (p=0.005; p=0.005), the Apnoea Index (p=0.038; p=0.009) and the respiratory events (p=0.039; p=0.014) decreased significantly in the MA and EA 10 Hz groups, respectively (AHI (21.9, 11.2), Apnoea Index (5.15, 0.7), respiratory events (120.5, 61.0) in the MA group before and after. AHI (20.6, 9.9), Apnoea Index (8.2, 0.3), respiratory events (117.0, 56.0) in the EA 10 Hz group before and after). the micro-arousals decreased only in the MA group (146.0 vs 88.5, p=0.0002). There were no significant changes in the EA 2 Hz group or in the control group.Conclusion A single session of either MA or EA 10 Hz had an acute effect in reducing the AHI as well as the number of nocturnal respiratory events of patients presenting with moderate OSA.
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Acupuncture in Medicine. London: B M J Publishing Group, v. 28, n. 3, p. 115-119, 2010.
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