What is extensively drug resistant tuberculosis?
Extensively drug-resistant TB (XDR TB) is a rare type of multidrug-resistant tuberculosis (MDR TB) that is resistant to isoniazid and rifampin, plus any fluoroquinolone and at least one of three injectable second-line drugs (i.e., amikacin, kanamycin, or capreomycin).
What is the meaning of extensively drug resistant?
Definition: Non-susceptibility to at least one agent in all but one or two antimicrobial categories (i.e. bacterial isolates remain susceptible to drugs from at most two classes of antibiotic).
WHO TB drug resistant classification?
Types of drug-resistant TB Rifampicin resistance (RR): resistance to rifampicin detected using phenotypic or genotypic methods, with or without resistance to other anti-TB drugs. It includes any resistance to rifampicin, in the form of mono-resistance, poly-resistance, MDR or XDR.
What is MDR TB PDF?
Abstract and Figures. Multidrug-resistant tuberculosis (MDR-TB) is an increasing global problem, with most cases arising from a mixture of physician error and patient non-compliance during treatment of susceptible TB. The extent and burden of MDR-TB varies significantly from country to country and region to region.
What is difference between MDR and XDR?
Multidrug resistant tuberculosis (MDR-TB) is a strain of TB that cannot be treated with the two most powerful first-line treatment anti-TB drugs. Extensively drug resistant tuberculosis (XDR-TB) is a form of TB caused by bacteria that are resistant to several of the most effective anti-TB drugs.
How is extensively drug resistant tuberculosis treated?
MDR regimens should include at least pyrazinamide, a fluoroquinolone, an injectable anti-TB drug, ethionamide (or prothionamide) and either cycloserine or PAS (para-aminosalycylic acid) if cycloserine cannot be used (conditional recommendation, very low quality evidence)(1).
How do you treat XDR bacteria?
Some combinations of drugs have been discovered that can be used to treat XDR bacteria. One of these is neuroleptic thioridazine. This drug, in combination with antibiotic agents, has shown success in curing XDR tuberculosis when administered by an experienced physician.
How is drug resistant TB diagnosed?
It has been reported in 117 countries worldwide. Drug resistance can be detected using special laboratory tests which test the bacteria for sensitivity to the drugs or detect resistance patterns. These tests can be molecular in type (such as Xpert MTB/RIF) or else culture-based.
How do you know if you have MDR TB?
4) What Are the Symptoms (Signs) of Persons with MDR TB? The symptoms are the same as for “ordinary” TB, which include: Bad Cough for longer than three weeks either dry, yellow or green mucus and in some cases bloody mucus. Weight Loss.
