Table 2.
Causes of CPAP titration, primary and secondary failures.
| Causes of CPAP Failure | Titration Failure N = 10 out of 400 |
Primary Failure N = 78 out of 307 |
Secondary Failure N = 64 out of 229 |
|---|---|---|---|
| CPAP titration pressure not effective | 5 (3 M) | NA | NA |
| Predominant central apnoea | 1 M | NA | NA |
| CPAP was not tolerated | 4 (3 M) | 15 (9 M) | 31 (23 M) |
| CPAP was too expensive | NA | 24 (19 M) | NA |
| Preferred other treatment * | NA | 18 (16 M) | 11 (10 M) |
| Afraid of CPAP treatment | - | 4 (2 M) | - |
| Treatment of comorbidities was more important | NA | 3 (1 M) | - |
| Did not feel benefit | - | - | 2 (1 M) |
| Spontaneous improvement | NA | NA | 8 (7 M) |
| Other reasons or declined to answer | NA | 14 (10 M) | 12 M |
| Total N | 10 (7 M) | 78 (57 M) | 64 (53 M) |
* Other treatment: weight reduction (diet, bariatric surgery, palate surgery), positional treatment (i.e., avoiding sleep in supine position). CPAP—continuous positive airway pressure, NA—not applicable, M—males, N—number.