[Endoscopic study on the effects of controlled pressure on the mucosa of the nasal cavity and paranasal sinuses].

Endoscopy with fiber endoscope Olimpus FNL-10 was performed to study the effects of controlled pressure on nasal mucosa. In 15 patients with aggravated chronic purulent sinusitis maxillary mucosa alterations were assessed using sinus-catheter and maxillary microsinusotomy. 12 patients with the same diagnosis underwent nasal mucosa examination with sinus catheter . The experiments with controlled pressure in the nasal cavity and paranasal sinuses demonstrate that the above pressure causes no damage to the mucosa, though it enhances hyperemia and diminishes edema in the area of osteomeatal complex as a result of changing the pressure (+) and (-).