Juei-Ling Chang

Precautions in Use of a New Endotracheal Tube for Laser Surgery

OLV of the lower lung was continued. The effect of CPAP on the arterial tension was evaluated after 20 min. As shown in Table 1, the mean arterial PO, during TLV with 50% N,O:O, was 207 L 84 mm Hg. After OLV, the Pao, was lowered to 89 ? 35 mm Hg (P < 0.01). The application of CPAP to the nonventilated lung significantly increased the Pao, to 122 2 47 mm Hg (P < 0.01). The results of the present report confirm the predictions of Capan et al. that the high Paoz achieved with the CPAP technique may permit the use of nitrous oxide during onelung ventilation (1).

Nonflammable endotracheal device for co2 laser ablation of benign laryngeal and proximal tracheal tumors

A Holinger aspirating tube may be utilized as a nonflammable endotracheal device during CO2 laser ablation of benign laryngeal and proximal tracheal tumors. Adequate jet ventilation may be performed through this small diameter (3.0 mm), metallic device while providing an unobstructed view of the surgical lesion. This technique was well‐accepted by surgeons during the clinical trials. Because the 3.0 mm outside diameter was significantly smaller than the smallest flexible, uncuffed metal endotracheal tube currently available (6.9 mm), the rigid structure facilitated atraumatic insertion past the surgical lesion. Both the use of this device and the required anesthetic technique are described in three CO2 laser ablative procedures. The authors consider that this device increases safety during this potentially hazardous procedure by eliminating the flammable polyvinyl chloride endotracheal tube and cottonoid packings most frequently used during this procedure.