[A study of 11 ventilators for anesthesia: laboratory testing].

Eleven anaesthesia ventilators were instrumentally tested under various conditions. They included: Excel and Modulus II Plus (Ohmeda); 710 and Servo anaesthesia circle 985 (Siemens); Jollytronic (Soxil) and Elsa (Engström); SA2 and Cicero (Dräger); ABT 4,300 (Kontron); Monnal A and the prototype Alys (Taema). The test circuit comprised a two compartment model lung, a pneumotachograph, a pressure gauge in the "airway".

[Spinal anesthesia and prevention of thrombosis by heparin].

Non traumatic spinal hematomas are a rare pathology, anticoagulant treatments are one of their most frequent etiology. Therefore, the association of spinal anesthesia and a preventive treatment which has antithrombotic aim by the use of subcutaneous heparin (non fragmented or low molecular weight) is being discussed by many authors. It is lawful to associate spinal anesthesia with a soft dose of non fragmented subcutaneous heparin (Kakkar method) if the protocols are strictly respected.