Reduction in exacerbation of COPD in patients of advanced ag

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Reduction in exacerbation of COPD in patients of advanced ag

Postby herbsandhelpers » Wed Jan 09, 2019 7:27 pm

Reduction in exacerbation of COPD in patients of advanced age using the Japanese Kampo medicine Dai-kenchu-to: a retrospective cohort study


Authors Jo T, Michihata N, Yamana H, Sasabuchi Y, Matsui H, Urushiyama H, Mitani A, Yamauchi Y, Fushimi K, Nagase T, Yasunaga H

Received 30 July 2018

Accepted for publication 2 December 2018

Published 27 December 2018 Volume 2019:14 Pages 129—139


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 3

Editor who approved publication: Dr Richard Russell

Article has an altmetric score of 1

Taisuke Jo,1,2 Nobuaki Michihata,1 Hayato Yamana,1 Yusuke Sasabuchi,3 Hiroki Matsui,4 Hirokazu Urushiyama,2 Akihisa Mitani,2 Yasuhiro Yamauchi,2 Kiyohide Fushimi,5 Takahide Nagase,2 Hideo Yasunaga4

1Department of Health Services Research, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; 2Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; 3Data Science Center, Jichi Medical University, Tochigi, Japan; 4Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan; 5Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan

Purpose: Patients with symptomatic COPD are recommended to use inhaled bronchodilators containing long-acting muscarinic receptor antagonists (LAMAs). However, bronchodilators may cause gastrointestinal adverse effects due to anticholinergic reactions, especially in advanced-age patients with COPD. Dai-kenchu-to (TU-100, Da Jian Zhong Tang in Chinese) is the most frequently prescribed Japanese herbal Kampo medicine and is often prescribed to control abdominal bloating and constipation. The purpose of this study was to evaluate the role of Dai-kenchu-to as a supportive therapy in advanced-age patients with COPD.

Patients and methods: We used the Japanese Diagnosis Procedure Combination inpatient database and identified patients aged ≥75 years who were hospitalized for COPD exacerbation. We then compared the risk of re-hospitalization for COPD exacerbation or death between patients with and without Dai-kenchu-to using 1-to-4 propensity score matching. A Cox proportional hazards model was used to compare the two groups. We performed subgroup analyses for patients with and without LAMA therapy.

Results: Patients treated with Dai-kenchu-to had a significantly lower risk of re-hospitalization or death after discharge; the HR was 0.82 (95% CI, 0.67–0.99) in 1-to-4 propensity score matching. Subgroup analysis of LAMA users showed a significant difference in re-hospitalization or death, while subgroup analysis of LAMA non-users showed no significant difference.

Conclusion: Our findings indicate that Dai-kenchu-to may have improved the tolerability of LAMA in advanced-age patients with COPD and, therefore, reduced the risk of re-hospitalization or death from COPD exacerbation. Dai-kenchu-to may be recommended as a useful supportive therapy for advanced-age patients with COPD.

Keywords: TU-100, herbal medicine, muscarinic receptor antagonists, propensity score,
survival analysis

Source: Dove Press
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