The Role of the Nose
There are 2 common reasons patients with OSA may be unaware of their nasal congestion that often leads to mouth breathing.
2. The lack of self-awareness of nasal breathing. It is common for nasal obstruction to be a factor since early childhood, thus leading to having no frame of reference for what normal breathing should be.
1. Often times, nasal obstruction is positional and only occurs once you are lying down for sleep. It can take anywhere between 30 to 90 minutes for nasal congestion to develop when first lying down; and by then you may have fallen asleep and be unaware of the problem.
If you tried CPAP and were unable to tolerate the treatment, nasal congestion and the need to mouth breath could have been a factor.
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