OBJECTIVE: To evaluate the relation between nasal resistance and tolerance and compliance with continuous positive airway pressure (CPAP) in patients with obstructive sleep apnea/hypopnea syndrome (SAHS). MATERIAL AND METHOD: One hundred twenty-five patients with a mean apnea/hypopnea index (AHI) of 53 21 were assessed for nasal resistance by active anterior rhinometry before starting CPAP treatment. Airflow (cm3/s) at 150 Pa was measured at each nostril. Tolerance for and compliance with CPAP was assessed at 2 weeks, 6 months and one year after start of treatment. RESULTS: The mean CPAP prescribed was 9 2 cmH2O. Rhinometry findings were considered pathological for 70 patients (56%). We observed no correlation between nasal flow and the CPAP established (r = 0.018). The treatment compliance objective in the first year was 5 1.5 hours/day. The most common nasal side effects during this period were runny nose, itching and sneezing (24%), oronasal dryness (21%) and subjective nasal obstruction (6%). There were no significant differences in tolerance of or compliance with CPAP treatment between patients with normal or abnormal rhinometry. CONCLUSIONS: Nasal resistance assessed by anterior rhinometry is unrelated to optimum CPAP and does not affect either tolerance or compliance among patients with SAHS.
OBJECTIVE: To evaluate the relation between nasal resistance and tolerance and compliance with continuous positive airway pressure (CPAP) in patients with obstructive sleep apnea/hypopnea syndrome (SAHS). MATERIAL AND METHOD: One hundred twenty-five patients with a mean apnea/hypopnea index (AHI) of 53 21 were assessed for nasal resistance by active anterior rhinometry before starting CPAP treatment. Airflow (cm3/s) at 150 Pa was measured at each nostril. Tolerance for and compliance with CPAP was assessed at 2 weeks, 6 months and one year after start of treatment. RESULTS: The mean CPAP prescribed was 9 2 cmH2O. Rhinometry findings were considered pathological for 70 patients (56%). We observed no correlation between nasal flow and the CPAP established (r = 0.018). The treatment compliance objective in the first year was 5 1.5 hours/day. The most common nasal side effects during this period were runny nose, itching and sneezing (24%), oronasal dryness (21%) and subjective nasal obstruction (6%). There were no significant differences in tolerance of or compliance with CPAP treatment between patients with normal or abnormal rhinometry. CONCLUSIONS: Nasal resistance assessed by anterior rhinometry is unrelated to optimum CPAP and does not affect either tolerance or compliance among patients with SAHS.
Authors: Daniel de Sousa Michels; Amanda da Mota Silveira Rodrigues; Márcio Nakanishi; André Luiz Lopes Sampaio; Alessandra Ramos Venosa Journal: Int J Otolaryngol Date: 2014-11-20