title: Anesthetic experimental device for small animal.
abstract: OBJECTIVE
  The difficulty to anesthetize small laboratory animals with vaporizer prompted us to go in search of new materials, and create new techniques. The improved equipment of anesthesia we looked for should be low cost, practical, versatile, and its management serve ethical, teaching, and research purposes.
  
  
  METHODS
  The new components of the equipment were: the vaporizer, the unidirectional valve, the glass cylinder filled with water, the flow guidance y-shape tube, the flow regulators, the mask modifications, and another free airway for emergency occurrence. A test was done with 30 Wistar rats, Rattus norvegicus albinus, divided into three groups with 10 rats for each one. Groups 1, 2 and 3 were anesthetized with Ether, Halothane and Sevoflurane respectively, using the new gadget. The anesthetic induction time, the breathing rhythm alteration during an anesthesia pre-established time (10 minutes), and the recovery time were observed.
  
  
  RESULTS
  The equipment enabled an easy handling, and fulfilled a larger safeness and stability during the induction and anesthetic management. The test showed it was possible to make use of several anesthetic agents.
  
  
  CONCLUSIONS
  The device is effective, and turns the anesthesia procedure into a very easy practice with low-cost. It should be recommended for experimental surgery, teaching and research.
authors.affiliation: Department of Surgery, FM, UFRJ, Brazil. anestvivas@yahoo.com.br
authors.forename: Luiz Alfredo de Magalhães
authors.initials: LA
authors.lastname: Vivas
authors.forename: Nelson
authors.initials: N
authors.lastname: Jamel
authors.forename: Ricardo Antonio
authors.initials: RA
authors.lastname: Refinetti
authors.forename: Luis Felipe da
authors.initials: LF
authors.lastname: Silva
authors.forename: Lígia Villela
authors.initials: LV
authors.lastname: Rodrigues
authors.forename: Paulo Cesar
authors.initials: PC
authors.lastname: Silva
authors.forename: Alberto
authors.initials: A
authors.lastname: Schanaider
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation / Q000592:standards / Q000662:veterinary*; D018685:Anesthetics, Inhalation / Q000008:administration & dosage*; D000818:Animals; D000830:Animals, Laboratory / Q000601:surgery; D004867:Equipment Design; D051381:Rats; D017208:Rats, Wistar
chemical_list: D018685:Anesthetics, Inhalation