[Usefulness of a simple expiratory gas monitor during sedation under spinal anesthesia].
Yamasaki K, Nakata K, Hazama A, Kita T, Mammoto T, Kanbara N, Sakai T, Kishi Y. [Usefulness of a simple expiratory gas monitor during sedation under spinal anesthesia]. Masui. 2001 Apr; 50(4):433-6.