Doses - HALOTHANE

Dogs & Cats:

(Note: Concentrations are dependent upon fresh gas flow rate; the lower the flow rate, the higher the concentration required.
a) 3% (induction); 0.5 - 1.5% (maintenance) (Papich 1992)
b) 0.5 - 3.5%, inhaled (Hubbell 1994)
Pocket Pets:
a) Using a non-rebreathing system: Induction: 2 - 4%, maintenance: 0.25 - 2% (Anderson 1994)

Horses:

a) For draft horses: Following induction, the largest ET tube that will comfortably fit (20 - 40 mm) should be placed and cuff inflated. In an oxygen-enriched semi-closed largeanimal circle system 4-5% of halothane is administered initially and is reduced as indicated by physical monitoring of neural reflexes and cardiopulmonary parameters. The goal should be the lowest concentration inhalant anesthetic that provides adequate surgicalanesthesia and restraint. Most draft horses can be maintained on 2.5 - 3% halothane. (Seereference for more information on monitoring and use.) (Geiser 1992)
Monitoring Parameters - 1) Respiratory and ventilatory status; 2) Cardiac rate/rhythm; bloodpressure (particularly with "at risk" patients); 3) Level of anesthesia
Dosage Forms/Preparations/FDA Approval Status/Withholding Times - Veterinary-Approved Products:
Halothane, USP (with thymol 0.01% and ammonia 0.00025%) in 250 ml bottles; (Fort Dodge); (Rx)

Human-Approved Products:

Halothane in 125 & 250 ml bottles; Halothane® (Abbott) (Rx), Fluothane® (Wyeth-Ayerst) (Rx)
HCG - see Chorionic Gonadotropin