Document Detail


Therapeutic drug monitoring in the treatment of tuberculosis: a retrospective analysis.
MedLine Citation:
PMID:  23317957     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
SETTING: Tuberculosis (TB) in-patient treatment unit in Vancouver, Canada.
OBJECTIVE: To examine the results of therapeutic drug monitoring (TDM) in anti-tuberculosis treatment.
DESIGN: We performed a retrospective analysis of TDM data from 2000 to 2010. All in-patients treated for TB with TDM performed during their treatment course were included.
RESULTS: TDM was performed on 52 patients in 76 treatment episodes from 2000 to 2010. Overall, 103/213 (48.4%) drug levels measured were low, and 5/213 (2.3%) were high. At least one drug level was low in 47/52 (90.3%) patients. Initial serum levels were low in respectively 76.6% and 68.4% of isoniazid (INH) and rifampicin (RMP) levels. In contrast, only 2.9% of initial pyrazinamide levels were low. Five patients with a susceptible strain on initial presentation later developed drug-resistant disease, with all five patients demonstrating at least one low drug level and two demonstrating multiple low levels. Dose adjustments were made in response to 26 INH and RMP levels, with variable serum responses.
CONCLUSION: In this population with high rates of treatment failure and acquired resistance, we demonstrate that most patients had low drug levels. Prospective studies are required to examine the relationship between drug levels and clinical outcomes.
Authors:
L Van Tongeren; S Nolan; V J Cook; J M Fitzgerald; J C Johnston
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease     Volume:  17     ISSN:  1815-7920     ISO Abbreviation:  Int. J. Tuberc. Lung Dis.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706389     Medline TA:  Int J Tuberc Lung Dis     Country:  France    
Other Details:
Languages:  eng     Pagination:  221-4     Citation Subset:  IM    
Affiliation:
Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
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