Treatment
The principles of treatment for MDR-TB and for XDR-TB are the same. Treatment requires extensive chemotherapy for up to two years. Second-line drugs are more toxic than the standard anti-TB regimen and can cause a range of serious side-effects including hepatitis, depression and hallucinations. Patients are often hospitalized for long periods, in isolation. In addition, second-line drugs are extremely expensive compared with the cost of drugs for standard TB treatment.
XDR-TB is associated with a much higher mortality rate than MDR-TB, because of a reduced number of effective treatment options. Despite early fears that this strain of TB was untreatable, recent studies have shown that XDR-TB can be treated through the use of aggressive regimens. A study in the Tomsk oblast of Russia, reported that 14 out of 29 (48.3%) patients with XDR-TB successfully completed treatment.
Successful outcomes depend on a number of factors including the extent of the drug resistance, the severity of the disease and whether the patient’s immune system is compromised. It also depends on access to laboratories that can provide early and accurate diagnosis so that effective treatment is provided as soon as possible. Effective treatment requires that all six classes of second-line drugs be available to clinicians who have special expertise in treating such cases.
Read more about this topic: Extensively Drug-resistant Tuberculosis
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