[Improved high-frequency flow ventilation-assisted endotracheobronchial surgery for tumors of the trachea and main bronchi].

The report deals with evaluation of the literature and our own data on 65 endotracheobronchial operations for tumor-related obstruction of the main bronchi using high-frequency injection flow ventilation (n = 33; 50.8%) or a combined-frequency one (n = 32; 49.2%). The latter method was significantly more efficient (p < or = 0.05%) due to more effective blood oxygenization (pO2--111.8 +/-13.8 vs. 130.6 +/-26.4 mmHg) and carbon dioxide elimination (pO2--36.1 +/-1.2 vs. 54.3 +/-6.7 mmHg). It also involved lower risk of surgical fire as oxygen concentration in inhaled air mix was monitored. Also, endoscopic examination took less time because it was continuous, while the risk of barotrauma was reduced to minimum owing to adequate selection of ventilation ratings.