Does apnea-hypopnea index alone reflect obstructive sleep apnea severity?

Results: Our study results suggest that MS and DTU-90, as well as the AHI, are correlated with the parameters reflecting hypoxemia and the other events secondary to hypoxia. Conclusion: MS and DTU-90 may reflect the severity of disease and may be used in the first evaluation of a patient with suspicion of obstructive sleep apnea before full polysomnography monitorization. Because they were not much better correlated with the parameters than the AHI, it is difficult to make a claim for their use as the only tool, or their replacement of the AHI, in the evaluation of patients with suspected obstructive sleep apnea.