[Differential lung ventilatory management during bronchoplasty].

We compared two methods of respiratory managements during bronchoplasty surgery. In one lung ventilation group (OLV-G), 10 patients were ventilated with Broncho-cath tube or Univent tube. On another 10 patients, ventilation was performed with Univent tube following insertion of bronchial blocker into main bronchus of dependent lung. Dependent lung was then ventilated using high frequency jet ventilation (HFJV) through bronchial blocker superimposed with low tidal volume IPPV (selective HFJV, S-HFJV-G). Oxygenation index (O.I.) of S-HFJV-G was significantly higher than that of OLV-G when bronchus was open. These phenomena might have occurred through prevention of pulmonary blood flow shift to the non-dependent lung when S-HFJV was used.