A streamlined anaesthetic system

Abstract

A streamlined modification of the combined Mapleson D & E systems has been described. The main advantages of this circuit are that it is light in weight, adaptable to both adult and paediatric anaesthesia, allows complete airway control at all times, and permits the institution of positive pressure ventilation, The circuit is easily adaptable for pollution control. A clinical study of the circuit was carried out with fresh gas inflows of 5.5 L/min and 7 L/min. PaCO2 was within an acceptable range with either spontaneous or controlled ventilation, indicating adequate carbon dioxide elimination at these inflow rates. The circuit has been evaluated in over 500 cases and was found satisfactory for all types of surgery. It was especially advantageous in surgery of the head and neck. © 1972 Canadian Anesthesiologists.