TY - JOUR
T1 - Halothane-induced hepatitis
T2 - A forgotten issue in developing countries
AU - Habibollahi, Peiman
AU - Mahboobi, Nastaran
AU - Esmaeili, Sara
AU - Safari, Saeid
AU - Dabbagh, Ali
AU - Alavian, Seyed Moayed
PY - 2011/1
Y1 - 2011/1
N2 - Halothane was introduced as an anesthetic in the 1950s and was considered a revolutionary agent in the field of anesthesia. Soon after, halothane-induced hepatitis became a concern, leading to the development of less toxic gases that induced a lower incidence of side effects. Two types of halothane- related hepatotoxicity have been described: type 1, or mild hepatitis, is associated with elevated transaminase levels and self-limiting symptoms, and type 2, or severe hepatotoxicity, is associated with acute fatal liver failure and is fatal in most cases. Hepatotoxicity is most likely to be immunerelated, based on much evidence. Free radicals that are produced by the metabolism of halothane in the liver can modify cellular proteins and introduce neo-antigens to the immune system. Sensitization to these neo-antigens induces a more severe response after multiple exposures; most cases of type 2 hepatitis occur after repeated contact. New halogenated anesthetics such as enflurane, sevoflurane, and desflurane, are not metabolized in the liver, causing few cases of sensitization. Compared with halothane, these anesthetics are expensive. As a result, replacement of halothane with new halogenated anesthetics requires a precise cost-benefit analysis, especially in developing countries that have low health care budgets.
AB - Halothane was introduced as an anesthetic in the 1950s and was considered a revolutionary agent in the field of anesthesia. Soon after, halothane-induced hepatitis became a concern, leading to the development of less toxic gases that induced a lower incidence of side effects. Two types of halothane- related hepatotoxicity have been described: type 1, or mild hepatitis, is associated with elevated transaminase levels and self-limiting symptoms, and type 2, or severe hepatotoxicity, is associated with acute fatal liver failure and is fatal in most cases. Hepatotoxicity is most likely to be immunerelated, based on much evidence. Free radicals that are produced by the metabolism of halothane in the liver can modify cellular proteins and introduce neo-antigens to the immune system. Sensitization to these neo-antigens induces a more severe response after multiple exposures; most cases of type 2 hepatitis occur after repeated contact. New halogenated anesthetics such as enflurane, sevoflurane, and desflurane, are not metabolized in the liver, causing few cases of sensitization. Compared with halothane, these anesthetics are expensive. As a result, replacement of halothane with new halogenated anesthetics requires a precise cost-benefit analysis, especially in developing countries that have low health care budgets.
KW - Anesthetics
KW - Halogenated
KW - Halothane
KW - Hepatitis
UR - http://www.scopus.com/inward/record.url?scp=79956227544&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79956227544&partnerID=8YFLogxK
M3 - Article
C2 - 22087107
AN - SCOPUS:79956227544
SN - 1735-143X
VL - 11
SP - 3
EP - 6
JO - Hepatitis Monthly
JF - Hepatitis Monthly
IS - 1
ER -