Fig. 1. The positioning of a 4-French Fogarty balloon in a selected lobar bronchus via a double-access-port endotracheal tube (DAPT) during fiberoptic vision. Ventilation is accomplished via a Y connector on the main port of the DAPT. A flexible bronchofiberscope is passed through the side port. To ensure airtightness, 8-French catheter sheaths with slitted rubber caps are placed on both access ports.