High morbidity during treatment and residual pulmonary disability in pulmonary tuberculosis: under-recognised phenomena.

Author(s)
Ralph AP
Kenangalem E
Waramori G
Pontororing GJ
Sandjaja N
Tjitra E
Maguire GP
Kelly PM
Anstey NM
Publication Date
2013
Abstract
In pulmonary tuberculosis (PTB), morbidity during treatment and residual pulmonary disability can be under-estimated. Among adults with smear-positive PTB at an outpatient clinic in Papua, Indonesia, we assessed morbidity at baseline and during treatment, and 6-month residual disability, by measuring functional capacity (six-minute walk test [6MWT] and pulmonary function), quality of life (St George's Respiratory Questionnaire [SGRQ]) and Adverse Events ([AE]: new symptoms not present at outset). Results were compared with findings in locally-recruited volunteers. 200 PTB patients and 40 volunteers were enrolled. 6WMT was 497m (interquartile range 460-529) in controls versus 408m (IQR 346-450) in PTB patients at baseline (p<0.0001) and 470m (IQR 418-515) in PTB patients after 6 months (p=0.02 versus controls). SGRQ total score was 0 units (IQR 0-2.9) in controls, versus 36.9 (27.4-52.8) in PTB patients at baseline (p<0.0001) and 4.3 (1.7-8.8) by 6 months (p<0.0001). Mean percentage of predicted FEV1 was 92% (standard deviation 19.9) in controls, versus 63% (19.4) in PTB patients at baseline (p<0.0001) and 71% (17.5) by 6 months (p<0.0001). After 6 months, 27% of TB patients still had at least moderate-severe pulmonary function impairment, and 57% still had respiratory symptoms, despite most achieving 'successful' treatment outcomes, and reporting good quality of life. More-advanced disease at baseline (longer illness duration, worse baseline X-ray) and HIV positivity predicted residual disability. AE at any time during treatment were common: itch 59%, arthralgia 58%, headache 40%, nausea 33%, vomiting 16%. We found high 6-month residual pulmonary disability and high AE rates. Although PTB treatment is highly successful, the extent of morbidity during treatment and residual impairment could be overlooked if not specifically sought. Calculations of PTB-related burden of disease should acknowledge that TB-related morbidity does not stop at 6 months. Early case detection and treatment are key in minimising residual impairment.
Citation
PloS one 2013; 8(11): e80302
Pubmed ID
https://pubmed.ncbi.nlm.nih.gov/24312209/?otool=iaurydwlib
Link
MESH subject
Adult
Antitubercular Agents
Case-Control Studies
Disabled Persons
Female
Follow-Up Studies
Humans
Indonesia
Male
Morbidity
Quality of Life
Respiratory Function Tests
Treatment Outcome
Tuberculosis, Pulmonary
Young Adult
Title
High morbidity during treatment and residual pulmonary disability in pulmonary tuberculosis: under-recognised phenomena.
Type of document
Journal Article
Entity Type
Publication

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