XDR means extensive drug resistance to: (A) H+R, (B) 1 Fluoroquinolone, (C) Minimum of 1 injectable drug, (D) All of the above
Answer is D. Ans. (d) All of the aboveRef.: K. Park 23rd ed. /199-200Definition of Extensive Drug Resistance* Resistance to both isoniazid (H) and rifampicin, and* Resistance to 1 fluoroquinolones and* Resistance to one 2nd line injectables out of 3 (kanamycin, amikacin, capreomycin).Older Definition of XDR* Resistance of isoniazid (H) and rifampicin both +* Resistance to any 3rd line drugs.Also Know*Multiple drug resistance (MDR) means resistance to resistance to isoniazid (H) and rifampicin (R).