It is difficult to know exactly what the person who has used this phrase means. It probably refers to a mixture of obstructive and central sleep apnea occurring in the same patient. This combination of issues is often more difficult to treat than pure obstructive or pure central sleep apnea, and in some patients the central component can get worse with increasing CPAP pressure. Many automatically titrating CPAP machines do not cope well with this combination. For more information please click on the links below:
Obstructive Sleep Apnoea
Central Sleep Apnoea
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