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A one-year weight management programme for difficult-to-treat asthma with obesity: a randomised controlled study.
Chest ( IF 9.5 ) Pub Date : 2024-10-18 , DOI: 10.1016/j.chest.2024.09.042
Varun Sharma,Helen Clare Ricketts,Louise McCombie,Naomi Brosnahan,Luisa Crawford,Lesley Slaughter,Anna Goodfellow,Femke Steffensen,Rekha Chaudhuri,Michael E J Lean,Douglas C Cowan

BACKGROUND Obesity-associated asthma results in increased morbidity and mortality. We report one-year asthma outcomes with the Counterweight-Plus weight management programme (CWP) compared to usual care (UC) in a single-centre, randomised, controlled trial in patients with difficult-to-treat asthma and obesity. RESEARCH QUESTION Can CWP use result in improved asthma control and quality of life compared to UC at one-year in patients with difficult-to-treat asthma and obesity? STUDY DESIGN AND METHODS We randomised (1:1 CWP:UC) adults with difficult-to-treat asthma and body mass index ≥30kg/m2. CWP with dietitian support: 12-week total diet replacement phase (850kcal/day low-energy formula); food reintroduction and maintenance phases up to one-year. Outcomes include Asthma Control Questionnaire (ACQ-6), Asthma Quality of Life Questionnaire (AQLQ) and healthcare usage. Minimal clinically important difference (MCID) is 0.5 for ACQ-6 and AQLQ. RESULTS Of 36 recruited, 29 attended at 52-weeks: 13 CWP, 16 UC. CWP resulted in greater weight change (median -14kg [IQR -15, -9]) compared to UC (2kg [-7, 8]; p=0.015) at 52-weeks. A greater proportion achieved MCID with CWP vs UC in AQLQ (71% vs 6% respectively; p<0.001). No between-group differences were observed in ACQ-6. Median exacerbation frequency reduced over 52-weeks with CWP from 4 (IQR 2, 5) to 0 (0, 2) (p<0.001), though no between-group difference was observed. 70% of the CWP group lost ≥10% body weight and had improvement in ACQ-6 (mean difference -1.1, 95%CI -1.9, -0.3; p=0.018) and AQLQ (1.2, 95%CI 0.4, 2.1; p=0.011) across 52-weeks. INTERPRETATION Use of a dietitian-supported weight management programme results in sustained weight-loss and is a potential treatment for obesity in asthma. CWP resulted in a higher proportion achieving MCID improvement in AQLQ compared to UC. Within group differences in AQLQ and exacerbation frequency suggest potential with CWP. These encouraging signals justify a larger sample study to further assess asthma-related outcomes.

中文翻译:


一项针对难以治疗的肥胖哮喘的为期一年的体重管理计划:一项随机对照研究。



背景 肥胖相关哮喘导致发病率和死亡率增加。在一项针对难治性哮喘和肥胖患者的单中心、随机、对照试验中,我们报告了与常规护理 (UC) 相比,Counterweight-Plus 体重管理计划 (CWP) 的一年哮喘结局。研究问题:与 UC 相比,使用 CWP 能否改善难治性哮喘和肥胖患者一年的哮喘控制和生活质量?研究设计和方法 我们随机分配了 (1:1 CWP:UC) 患有难治性哮喘且体重指数 ≥30kg/m2.营养师支持的 CWP:12 周总饮食替代阶段(850kcal/天的低能量配方);食物再引入和维持阶段长达一年。结果包括哮喘控制问卷 (ACQ-6)、哮喘生活质量问卷 (AQLQ) 和医疗保健使用情况。ACQ-6 和 AQLQ 的最小临床重要差异 (MCID) 为 0.5。结果 在招募的 36 人中,有 29 人在 52 周时参加: 13 名 CWP,16 名 UC。与 UC (2kg [-7, 8];p=0.015) 相比,CWP 导致 52 周时的体重变化更大 (中位数 -14kg [IQR -15, -9])。在 AQLQ 中,CWP 与 UC 实现 MCID 的比例更高 (分别为 71% 和 6%;p<0.001)。在 ACQ-6 中未观察到组间差异。CWP 在 52 周内中位恶化频率从 4 (IQR 2, 5) 降低到 0 (0, 2) (p<0.001),但未观察到组间差异。70% 的 CWP 组体重减轻了 ≥10%,ACQ-6 (平均差 -1.1,95% CI -1.9,-0.3;p=0.018) 和 AQLQ (1.2,95%CI 0.4,2.1;p=0.011) 在 52 周内有所改善。解释 使用营养师支持的体重管理计划可导致持续的体重减轻,是哮喘肥胖的潜在治疗方法。 与 UC 相比,CWP 导致 AQLQ 中实现 MCID 改善的比例更高。在组内,AQLQ 和加重频率的差异表明可能存在 CWP。这些令人鼓舞的信号证明了进行更大规模样本研究以进一步评估哮喘相关结局的合理性。
更新日期:2024-10-18
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