Table 4.

Treatment and Clinical Course of Patients With Pulmonary Nontuberculous Mycobacteria Negative for Human Immunodeficiency Virus

All (N = 297)MAC (n = 247)M. kansasii (n = 23)M. abscessus (n = 12)Other (n = 7)Multiple (n = 8)
Treated245 (83.1)203 (82.9)21 (91.3)9 (75)6 (85.7)6 (75)
No. of antibiotics administered as initial therapy
 110a (4.1)8 (3.9)2 (22.2)
 226 (10.6)22 (10.8)1 (4.8)2 (22.2)1 (16.7)
 ≥3210 (85.4)174 (85.3)20 (95.2)5 (55.6)5 (83.3)6 (100)
Mode of initial antibiotics administration
 Oral only229 (93.1)192 (94.1)21 (100)4 (44.4)6 (100)6 (100)
 Oral and parenteral17 (6.9)12 (5.9)5 (55.6)
Duration of treatment, mean ± SD, m13.7 ± 9.713.7 ± 10.013.6 ± 8.013.4 ± 12.217.2 ± 3.310.9 ± 7.3
Adherence to ATS/IDSA treatment guidelines99 (33)88 (35.6)4 (17.4)2 (16.7)1 (14.3)3 (37.5)
Change in treatment97 (32.7)80 (32.4)5 (21.7)7 (58.3)2 (28.6)3 (37.5)
Reason for discontinued treatment
 Persistent positive culture12 (7.5)12 (9.3)
 Culture-confirmed drug resistance9 (5.7)9 (7)
 Adverse drug effects90 (56.6)75 (58.1)3 (23.1)6 (85.7)1 (25)5 (83.3)
 Drug interaction3 (1.9)2 (1.6)1 (16.7)
NTM culture result available at follow-up
 12–24 m141 (47.5)114 (46.2)11 (47.8)9 (75)3 (42.9)4 (50)
 24–30 m66 (22.2)56 (22.7)1 (4.3)5 (41.7)2 (28.6)2 (25)
 >30 m41 (13.8)35 (14.2)3 (13)2 (16.7)1 (12.5)
NTM culture negative at follow-up
 12–24 m88 (62.4)70 (61.4)11 (100)3 (33.3)2 (66.7)2 (50)
 24–30 m36 (54.5)30 (53.6)1 (100)3 (60)1 (50)1 (50)
 >30 m22 (53.7)18 (51.4)2 (66.7)2 (100)
Symptoms improvement
 3 m104 (44.6)85 (43.4)11 (68.8)4 (50)2 (33.3)2 (28.6)
 6 m76 (41.3)66 (41.3)5 (50)3 (42.9)2 (66.7)
 9 m69 (41.1)65 (44.8)2 (20)1 (14.3)1 (25)
 12 m55 (34.6)49 (34.5)4 (50)1 (25)1 (25)
 18 m75 (36.2)66 (38.2)6 (37.5)2 (40)1 (20)
 30 m50 (29.6)42 (28.8)3 (37.5)3 (42.9)2 (40)
Hospitalization83 (29.2)62 (26.3)9 (40.9)6 (50)3 (50)3 (37.5)
Died44 (15.7)34 (14.7)4 (18.2)4 (33.3)2 (25)
Total person-years follow-up50642832211213
Months of follow-up, median (IQR)24.2(14.5, 29.7)24.8(15.0, 29.7)17.5(13.8, 24.0)26.1(14.4, 29.8)24.4(20.7, 29.9)23.4(9.0, 29.5)
All (N = 297)MAC (n = 247)M. kansasii (n = 23)M. abscessus (n = 12)Other (n = 7)Multiple (n = 8)
Treated245 (83.1)203 (82.9)21 (91.3)9 (75)6 (85.7)6 (75)
No. of antibiotics administered as initial therapy
 110a (4.1)8 (3.9)2 (22.2)
 226 (10.6)22 (10.8)1 (4.8)2 (22.2)1 (16.7)
 ≥3210 (85.4)174 (85.3)20 (95.2)5 (55.6)5 (83.3)6 (100)
Mode of initial antibiotics administration
 Oral only229 (93.1)192 (94.1)21 (100)4 (44.4)6 (100)6 (100)
 Oral and parenteral17 (6.9)12 (5.9)5 (55.6)
Duration of treatment, mean ± SD, m13.7 ± 9.713.7 ± 10.013.6 ± 8.013.4 ± 12.217.2 ± 3.310.9 ± 7.3
Adherence to ATS/IDSA treatment guidelines99 (33)88 (35.6)4 (17.4)2 (16.7)1 (14.3)3 (37.5)
Change in treatment97 (32.7)80 (32.4)5 (21.7)7 (58.3)2 (28.6)3 (37.5)
Reason for discontinued treatment
 Persistent positive culture12 (7.5)12 (9.3)
 Culture-confirmed drug resistance9 (5.7)9 (7)
 Adverse drug effects90 (56.6)75 (58.1)3 (23.1)6 (85.7)1 (25)5 (83.3)
 Drug interaction3 (1.9)2 (1.6)1 (16.7)
NTM culture result available at follow-up
 12–24 m141 (47.5)114 (46.2)11 (47.8)9 (75)3 (42.9)4 (50)
 24–30 m66 (22.2)56 (22.7)1 (4.3)5 (41.7)2 (28.6)2 (25)
 >30 m41 (13.8)35 (14.2)3 (13)2 (16.7)1 (12.5)
NTM culture negative at follow-up
 12–24 m88 (62.4)70 (61.4)11 (100)3 (33.3)2 (66.7)2 (50)
 24–30 m36 (54.5)30 (53.6)1 (100)3 (60)1 (50)1 (50)
 >30 m22 (53.7)18 (51.4)2 (66.7)2 (100)
Symptoms improvement
 3 m104 (44.6)85 (43.4)11 (68.8)4 (50)2 (33.3)2 (28.6)
 6 m76 (41.3)66 (41.3)5 (50)3 (42.9)2 (66.7)
 9 m69 (41.1)65 (44.8)2 (20)1 (14.3)1 (25)
 12 m55 (34.6)49 (34.5)4 (50)1 (25)1 (25)
 18 m75 (36.2)66 (38.2)6 (37.5)2 (40)1 (20)
 30 m50 (29.6)42 (28.8)3 (37.5)3 (42.9)2 (40)
Hospitalization83 (29.2)62 (26.3)9 (40.9)6 (50)3 (50)3 (37.5)
Died44 (15.7)34 (14.7)4 (18.2)4 (33.3)2 (25)
Total person-years follow-up50642832211213
Months of follow-up, median (IQR)24.2(14.5, 29.7)24.8(15.0, 29.7)17.5(13.8, 24.0)26.1(14.4, 29.8)24.4(20.7, 29.9)23.4(9.0, 29.5)

Data are presented as n (%) unless otherwise indicated.

Abbreviations: ATS/IDSA, American Thoracic Society/Infectious Diseases Society of America; IQR, interquartile range; MAC, Mycobacterium avium-intracellulare complex; NTM, nontuberculous mycobacteria.

aSix received macrolide alone and four received doxycycline, levofloxacin, tobramycin or vancomycin.

Table 4.

Treatment and Clinical Course of Patients With Pulmonary Nontuberculous Mycobacteria Negative for Human Immunodeficiency Virus

All (N = 297)MAC (n = 247)M. kansasii (n = 23)M. abscessus (n = 12)Other (n = 7)Multiple (n = 8)
Treated245 (83.1)203 (82.9)21 (91.3)9 (75)6 (85.7)6 (75)
No. of antibiotics administered as initial therapy
 110a (4.1)8 (3.9)2 (22.2)
 226 (10.6)22 (10.8)1 (4.8)2 (22.2)1 (16.7)
 ≥3210 (85.4)174 (85.3)20 (95.2)5 (55.6)5 (83.3)6 (100)
Mode of initial antibiotics administration
 Oral only229 (93.1)192 (94.1)21 (100)4 (44.4)6 (100)6 (100)
 Oral and parenteral17 (6.9)12 (5.9)5 (55.6)
Duration of treatment, mean ± SD, m13.7 ± 9.713.7 ± 10.013.6 ± 8.013.4 ± 12.217.2 ± 3.310.9 ± 7.3
Adherence to ATS/IDSA treatment guidelines99 (33)88 (35.6)4 (17.4)2 (16.7)1 (14.3)3 (37.5)
Change in treatment97 (32.7)80 (32.4)5 (21.7)7 (58.3)2 (28.6)3 (37.5)
Reason for discontinued treatment
 Persistent positive culture12 (7.5)12 (9.3)
 Culture-confirmed drug resistance9 (5.7)9 (7)
 Adverse drug effects90 (56.6)75 (58.1)3 (23.1)6 (85.7)1 (25)5 (83.3)
 Drug interaction3 (1.9)2 (1.6)1 (16.7)
NTM culture result available at follow-up
 12–24 m141 (47.5)114 (46.2)11 (47.8)9 (75)3 (42.9)4 (50)
 24–30 m66 (22.2)56 (22.7)1 (4.3)5 (41.7)2 (28.6)2 (25)
 >30 m41 (13.8)35 (14.2)3 (13)2 (16.7)1 (12.5)
NTM culture negative at follow-up
 12–24 m88 (62.4)70 (61.4)11 (100)3 (33.3)2 (66.7)2 (50)
 24–30 m36 (54.5)30 (53.6)1 (100)3 (60)1 (50)1 (50)
 >30 m22 (53.7)18 (51.4)2 (66.7)2 (100)
Symptoms improvement
 3 m104 (44.6)85 (43.4)11 (68.8)4 (50)2 (33.3)2 (28.6)
 6 m76 (41.3)66 (41.3)5 (50)3 (42.9)2 (66.7)
 9 m69 (41.1)65 (44.8)2 (20)1 (14.3)1 (25)
 12 m55 (34.6)49 (34.5)4 (50)1 (25)1 (25)
 18 m75 (36.2)66 (38.2)6 (37.5)2 (40)1 (20)
 30 m50 (29.6)42 (28.8)3 (37.5)3 (42.9)2 (40)
Hospitalization83 (29.2)62 (26.3)9 (40.9)6 (50)3 (50)3 (37.5)
Died44 (15.7)34 (14.7)4 (18.2)4 (33.3)2 (25)
Total person-years follow-up50642832211213
Months of follow-up, median (IQR)24.2(14.5, 29.7)24.8(15.0, 29.7)17.5(13.8, 24.0)26.1(14.4, 29.8)24.4(20.7, 29.9)23.4(9.0, 29.5)
All (N = 297)MAC (n = 247)M. kansasii (n = 23)M. abscessus (n = 12)Other (n = 7)Multiple (n = 8)
Treated245 (83.1)203 (82.9)21 (91.3)9 (75)6 (85.7)6 (75)
No. of antibiotics administered as initial therapy
 110a (4.1)8 (3.9)2 (22.2)
 226 (10.6)22 (10.8)1 (4.8)2 (22.2)1 (16.7)
 ≥3210 (85.4)174 (85.3)20 (95.2)5 (55.6)5 (83.3)6 (100)
Mode of initial antibiotics administration
 Oral only229 (93.1)192 (94.1)21 (100)4 (44.4)6 (100)6 (100)
 Oral and parenteral17 (6.9)12 (5.9)5 (55.6)
Duration of treatment, mean ± SD, m13.7 ± 9.713.7 ± 10.013.6 ± 8.013.4 ± 12.217.2 ± 3.310.9 ± 7.3
Adherence to ATS/IDSA treatment guidelines99 (33)88 (35.6)4 (17.4)2 (16.7)1 (14.3)3 (37.5)
Change in treatment97 (32.7)80 (32.4)5 (21.7)7 (58.3)2 (28.6)3 (37.5)
Reason for discontinued treatment
 Persistent positive culture12 (7.5)12 (9.3)
 Culture-confirmed drug resistance9 (5.7)9 (7)
 Adverse drug effects90 (56.6)75 (58.1)3 (23.1)6 (85.7)1 (25)5 (83.3)
 Drug interaction3 (1.9)2 (1.6)1 (16.7)
NTM culture result available at follow-up
 12–24 m141 (47.5)114 (46.2)11 (47.8)9 (75)3 (42.9)4 (50)
 24–30 m66 (22.2)56 (22.7)1 (4.3)5 (41.7)2 (28.6)2 (25)
 >30 m41 (13.8)35 (14.2)3 (13)2 (16.7)1 (12.5)
NTM culture negative at follow-up
 12–24 m88 (62.4)70 (61.4)11 (100)3 (33.3)2 (66.7)2 (50)
 24–30 m36 (54.5)30 (53.6)1 (100)3 (60)1 (50)1 (50)
 >30 m22 (53.7)18 (51.4)2 (66.7)2 (100)
Symptoms improvement
 3 m104 (44.6)85 (43.4)11 (68.8)4 (50)2 (33.3)2 (28.6)
 6 m76 (41.3)66 (41.3)5 (50)3 (42.9)2 (66.7)
 9 m69 (41.1)65 (44.8)2 (20)1 (14.3)1 (25)
 12 m55 (34.6)49 (34.5)4 (50)1 (25)1 (25)
 18 m75 (36.2)66 (38.2)6 (37.5)2 (40)1 (20)
 30 m50 (29.6)42 (28.8)3 (37.5)3 (42.9)2 (40)
Hospitalization83 (29.2)62 (26.3)9 (40.9)6 (50)3 (50)3 (37.5)
Died44 (15.7)34 (14.7)4 (18.2)4 (33.3)2 (25)
Total person-years follow-up50642832211213
Months of follow-up, median (IQR)24.2(14.5, 29.7)24.8(15.0, 29.7)17.5(13.8, 24.0)26.1(14.4, 29.8)24.4(20.7, 29.9)23.4(9.0, 29.5)

Data are presented as n (%) unless otherwise indicated.

Abbreviations: ATS/IDSA, American Thoracic Society/Infectious Diseases Society of America; IQR, interquartile range; MAC, Mycobacterium avium-intracellulare complex; NTM, nontuberculous mycobacteria.

aSix received macrolide alone and four received doxycycline, levofloxacin, tobramycin or vancomycin.

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