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Inspiratory Flow Rate Capability in Pulmonary Fibrosis Patients

2026年9月10日 更新者：Jiuwu Bai、Shanghai Pulmonary Hospital, Shanghai, China

A Clinical Study on Inspiratory Flow Rate Capability in Pulmonary Fibrosis Patients

The goal of this observational study is to learn about the inspiratory flow rate capability in patients with pulmonary fibrosis (IPF or PPF) when using inhaler devices with different resistances. The main questions it aims to answer are:

What is the peak inspiratory flow rate (PIFR) that patients with pulmonary fibrosis can achieve through a medium-resistance inhaler device?

What is the peak inspiratory flow rate (PIFR) that patients with pulmonary fibrosis can achieve through a high-resistance inhaler device?

What is the inspiratory time (EIT) for each resistance level?

Participants will use a portable device called In-Check™ DIAL G16, which simulates the resistance of different dry powder inhalers. Each participant will perform two breathing tests at a medium-resistance setting and two breathing tests at a high-resistance setting, with a 2-minute rest between settings. The device measures how fast air is breathed in and how long each breath lasts.

This study will enroll 60 patients diagnosed with IPF or PPF at Shanghai Pulmonary Hospital. Participants will be involved for approximately 30 to 60 minutes, including training on how to use the device and the breathing tests. The study involves no drugs or invasive procedures.

研究概览

地位

招聘中

条件

研究类型

观察性的

注册 (估计的)

60

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

  • 姓名：Jiuwu Bai
  • 电话号码：+86 13651602925
  • 邮箱：yv59@163.com

学习地点

  • 中国
    • Shanghai Municipality
      • Shanghai、Shanghai Municipality、中国、200433
        • 招聘中
        • Shanghai Pulmonary Hospital
        • 接触：
          • Jiuwu Bai
          • 电话号码：+86 13651602925
          • 邮箱：yv59@163.com

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 成人
  • 年长者

接受健康志愿者

不

取样方法

非概率样本

研究人群

A total of 60 patients with pulmonary fibrosis (IPF or PPF) diagnosed according to the ATS/ERS/JRS/ALAT 2022 guidelines will be enrolled at Shanghai Pulmonary Hospital. Eligible participants are aged 18-80 years, either sex, with FVC ≥ 45% of predicted and DLCO > 25% of predicted within 2 months before screening. All participants will perform inspiratory flow tests at medium and high device resistances.

描述

Inclusion Criteria:

  1. Age 18-80 years (inclusive), either sex.
  2. Diagnosis of pulmonary fibrosis (IPF or PPF) according to the ATS/ERS/JRS/ALAT 2022 guidelines (with traceable diagnostic evidence such as medical records, confirmed by a radiologist).
  3. Forced vital capacity (FVC) ≥ 45% of predicted normal value within 2 months before screening.
  4. Diffusing capacity for carbon monoxide (DLCO) > 25% of predicted normal value within 2 months before screening.
  5. Voluntary participation with written informed consent.

Exclusion Criteria:

  1. Patients with impaired consciousness, dementia, or various psychiatric disorders.
  2. Patients unable to operate the inspiratory flow measurement device as instructed by the investigator.
  3. Patients with major diseases or conditions other than the IPF under study that, in the investigator's judgment, may put the patient at risk by participating in the trial.
  4. Any participant deemed unsuitable for enrollment by the investigator.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

队列和干预

团体/队列
Pulmonary Fibrosis Patients
Patients aged 18-80 years with a diagnosis of idiopathic pulmonary fibrosis (IPF) or progressive pulmonary fibrosis (PPF) according to the ATS/ERS/JRS/ALAT 2022 guidelines. Participants will perform inspiratory flow tests using the In-Check™ DIAL G16 device at both medium-resistance and high-resistance settings. No investigational drug or intervention is administered.

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Peak Inspiratory Flow Rate (PIFR) at Medium Device Resistance
大体时间：Single visit (approximately 30-60 minutes)
Peak inspiratory flow rate (PIFR, L/min) will be measured using the In-Check™ DIAL G16 device at the medium-resistance setting. Each participant will perform two breathing tests at this setting. The mean PIFR of the two valid measurements will be recorded.
Single visit (approximately 30-60 minutes)
Peak Inspiratory Flow Rate (PIFR) at High Device Resistance
大体时间：Single visit (approximately 30-60 minutes)
Peak inspiratory flow rate (PIFR, L/min) will be measured using the In-Check™ DIAL G16 device at the high-resistance setting. Each participant will perform two breathing tests at this setting. The mean PIFR of the two valid measurements will be recorded.
Single visit (approximately 30-60 minutes)

次要结果测量

结果测量
措施说明
大体时间
Inspiratory Time (EIT) at Medium and High Device Resistances
大体时间：Single visit (approximately 30-60 minutes)
Inspiratory time (EIT, seconds) will be measured using the In-Check™ DIAL G16 device at two resistance settings: medium resistance and high resistance. Each participant will perform two breathing tests at each resistance setting. The mean EIT of the two valid measurements at each resistance level will be recorded and compared between the two settings.
Single visit (approximately 30-60 minutes)

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Shanghai Pulmonary Hospital, Shanghai, China

合作者

Shanghai Xin Huanghe Pharmaceutical Co., Ltd.

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年1月10日

初级完成 (估计的)

2026年12月31日

研究完成 (估计的)

2026年12月31日

研究注册日期

首次提交

2026年9月10日

首先提交符合 QC 标准的

2026年9月10日

首次发布 (实际的)

2026年9月15日

研究记录更新

最后更新发布 (实际的)

2026年9月15日

上次提交的符合 QC 标准的更新

2026年9月10日

最后验证

2026年9月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • SHXHH-PF-DY-01

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

未定

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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