Table 2 Resistance to first and second-line anti-tuberculous medication among MDR-TB patients at Jinnah Postgraduate Medical Center, Karachi, Pakistan (2009–2012)
| Â | Number of cases with resistance | |
|---|---|---|
n | (%) | |
Any resistance (first line drugs) | ||
 Isoniazid (H) | 130 | (97.7) |
 Rifampicin (R) | 129 | (96.9) |
 Pyrazinamide (Z) | 115 | (86.4) |
 Ethambutol (E) | 92 | (69.2) |
 Streptomycin (S) | 86 | (64.6) |
Any resistance (second line drugs) | ||
 Kanamycin (Km) | 1 | (0.8) |
 Amikacin (Am) | 2 | (1.5) |
 Capreomycin (Cm) | 2 | (1.5) |
 Ofloxacin (Ofx) | 49 | (34.6) |
 Ethionamide (Eto) | 3 | (2.3) |
 Cycloserine (Cs) | 1 | (0.8) |
Combined resistance of H with other drugs | ||
 H + Z | 114 | (85.7) |
 H + E | 91 | (68.4) |
 H + S | 86 | (64.7) |
 H + Z + E | 90 | (67.7) |
 H + Z + E + S | 67 | (50.4) |
 H + Ofx | 45 | (33.9) |