Halothane Hepatotoxicity Follow-up
- Author: Ruben Peralta, MD, FACS; Chief Editor: Michael R Pinsky, MD, CM, FCCP, FCCM more...
Further Inpatient Care
Because clinical deterioration may be rapid and because of the high risk of mortality, patients may require monitoring in an intensive care unit.
Transfer
- Hospitalized patients may be discharged when the following criteria are met:
- Significant improvement in symptoms
- Normalization of prothrombin time
- A substantial downward trend in the serum aminotransferase and bilirubin values occurs. Mildly elevated aminotransferase levels should not be considered contraindications to the gradual resumption of normal activity as tolerated.
Deterrence/Prevention
- The most conservative approach is to avoid halothane when reasonable alternatives exist. For example, because of the medicolegal climate in the United States, halothane is infrequently used in adults since several alternatives exist and any postanesthetic liver dysfunction is likely to be ascribed to halothane. In many other countries with different medicolegal climates, halothane is still widely used because of economic reasons.
- The anesthesia profession is becoming more aware of the occupational exposure and adverse environmental impact of inhalational anesthetics, which includes ozone damage and greenhouse gas effect. A call for the modification in anesthetics procedures and the role of total intravenous anesthesia in selected procedures is being advocated by some.[5]
- Carefully consider halothane use in any adult patient with recent exposure in the past 6 weeks. Recent exposure is the most important risk factor for type II fulminant hepatotoxicity.
- In patients with a history of jaundice and fever following previous halothane exposure, all volatile anesthetics (ie, halothane, enflurane, isoflurane, sevoflurane, desflurane) should be used with caution and indications should be documented.
- Patients with unexplained elevations of liver functions should not undergo anesthesia and elective surgery until a diagnosis has been confirmed. Any type of surgery and anesthesia in the setting of acute hepatitis carries the potential for increased mortality and morbidity.
Complications
- Fulminant liver failure is possible.
- In rare cases, cirrhosis may develop following halothane hepatitis. However, in most cases, liver function returns to normal.
- Halothane given with succinylcholine for induction anesthetic is associated with masseter spasm.
Prognosis
- If fulminant liver failure does not occur, patients usually make a full recovery.
- If fulminant liver failure occurs, the mortality rate can be 50%.
- If hepatic encephalopathy is present, the mortality rate can be 80%.
Patient Education
- Full informed consent should always be obtained and should include the indications for use and the possible risk of hepatotoxicity.
- Patients with a history of fever and jaundice following halothane exposure should be sure to communicate this to anesthesiologists and surgeons.
- General anesthesia is not contraindicated for future surgery because it can be provided without the use of volatile agents.
- For excellent patient education resources, visit eMedicine's Hepatitis Center and Liver, Gallbladder, and Pancreas Center. Also, see eMedicine's patient education articles Hepatitis A, Hepatitis B, Hepatitis C, and Cirrhosis.
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