WANG Mingli,MAO Ling,ZI Suna,et al.Effects of Heat-clearing Chinese Medicinals on Clinical Symptoms and Quality of Life in Stable Bronchiectasis:N-of-1 Trials of 50 Cases[J].Journal of Traditional Chinese Medicine,2023,64(06):600-608.
WANG Mingli,MAO Ling,ZI Suna,et al.Effects of Heat-clearing Chinese Medicinals on Clinical Symptoms and Quality of Life in Stable Bronchiectasis:N-of-1 Trials of 50 Cases[J].Journal of Traditional Chinese Medicine,2023,64(06):600-608.DOI: 10.13288/j.11-2166/r.2023.06.011.
Effects of Heat-clearing Chinese Medicinals on Clinical Symptoms and Quality of Life in Stable Bronchiectasis:N-of-1 Trials of 50 Cases
To compare the differences in the efficacy and safety of the individualized decoctions and the individualized decoctions that removed of heat-clearing medicinals, and to evaluate the value of heat-clearing Chinese medicinals in the stable stage of bronchiectasis.
Methods
2
Fifty patients in the stable stage of bronchiectasis were enrolled in a double-blind, randomized, N-of-1 trials. The trial was consisted of three rounds, each round having testing period and control period, 4 weeks respectively. Patients took individualized decoction based on syndrome differentiation during the testing period, and took individualized decoction that removed heat-clearing medicinals during the control period. The medication time during each period was three weeks, and the primary outcome measures including overall symptom score (Likert scale), secondary outcome including chronic obstructive pulmonary disease assessment test (CAT) score and 24-hour sputum volume were evaluated one week after stopping medication. Paired
t
-test and meta-analysis were used to evaluate the efficacy differences of different prescriptions at the individual and group level.
Results
2
At the individual level, there were statistically significant differences in favor of individualized decoction than that removing heat-clearing medicinals in the Likert scale score (6 cases) and 24-hour sputum volume (1 case) of certain patients (
P
<0.05). At the group level, the results of meta-analyses showed that individualized decoction was better than that removing the heat-clearing medicinals in overall symptom score (
MD
= -0.10, 95%
CI
-0.13, -0.06,
P
<0.001), CAT score (
MD
= -0.48, 95%
CI
-0.86, -0.11,
P
= 0.01) and 24-hour sputum volue (
MD
= -0.48, 95%
CI
-1.29, 0.04,
P
= 0.07). There were no serious adverse reactions of the two TCM prescriptions.
Conclusion
2
Heat-clearing Chinese medicinals can relieve symptoms and improve quality of life in patients with stable bronchiectasis with good safety, but the degree of improvement is limited.
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