Study on the Measurement Method of the Left Diaphragm (LD)
2026年4月23日 更新者：Shanghai Zhongshan Hospital
To Study the Consistency of Multiple Measurement Methods of Left Diaphragm Mobility in Critically Ill Patients
This study intends to use ultrasound to measure the bilateral diaphragmatic ultrasound indicators in critically ill patients, focusing on the left diaphragm, and to explore the consistency and reliability among various ultrasound indicators to evaluate the diaphragmatic mobility
研究概览
地位
尚未招聘
条件
研究类型
观察性的
注册 (估计的)
35
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
Critically ill patients
描述
Inclusion Criteria:
①Adult patients (≥18 years old) of both sexes;
In invasive group, intubation or tracheotomy was changed to 5L/min T-tube or tracheotomy mask oxygen inhalation;
Patients in non-invasive group were treated with mask oxygen 5L/min;
- agree to participate in the trial and sign the informed consent;
Exclusion Criteria:
①The diaphragm ultrasound operation site was too large to obtain images.
Diaphragmatic ultrasound images could not be obtained in any section;
The ultrasound image quality of any section was poor;
- the presence of phrenic nerve injury/paralysis ⑤ pregnant women; ⑥ Neuromuscular diseases such as ALS and myasthenia gravis affect the evaluation of spontaneous breathing ⑦ Patients deemed by the investigator to be ineligible.
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 |
|---|
|
Invasive respiratory support group
The subjects of ultrasound measurement were patients with invasive mechanical ventilation
|
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Noninvasive respiratory support group
The subjects of ultrasound measurement were patients with non-invasive respiratory support
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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 |
|---|---|---|
|
Consistency of diaphragmatic mobility measurements between the standard and modified positions on the left side.
大体时间：Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
The main purpose is to verify the consistency of the two methods, Measurements were performed after switching patients in the invasive group (intubated patients to T-piece oxygen at 5 L/min and tracheostomized patients to face mask oxygen at 5 L/min following weaning), and patients in the non-invasive group (those receiving non-invasive ventilation or high-flow oxygen therapy) to conventional face mask oxygen at 5 L/min.
|
Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Consistency of diaphragmatic excursion measurements between the standard position and the other four positions on the left side.
大体时间：Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
Consistency of measurement methods，Measurements were performed after switching patients in the invasive group (intubated patients to T-piece oxygen at 5 L/min and tracheostomized patients to face mask oxygen at 5 L/min following weaning), and patients in the non-invasive group (those receiving non-invasive ventilation or high-flow oxygen therapy) to conventional face mask oxygen at 5 L/min.
|
Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
|
Consistency of diaphragmatic excursion measurements between the standard position and the other five positions on the right side.
大体时间：Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
Consistency of measurement methods，Measurements were performed after switching patients in the invasive group (intubated patients to T-piece oxygen at 5 L/min and tracheostomized patients to face mask oxygen at 5 L/min following weaning), and patients in the non-invasive group (those receiving non-invasive ventilation or high-flow oxygen therapy) to conventional face mask oxygen at 5 L/min.
|
Measurements were performed 5 minutes after all patients were switched to conventional oxygen therapy at 5 L/min for the first time, once breathing had stabilized.
|
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。
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 (估计的)
2026年5月5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4月12日
首先提交符合 QC 标准的
2026年4月23日
首次发布 (实际的)
2026年4月30日
研究记录更新
最后更新发布 (实际的)
2026年4月30日
上次提交的符合 QC 标准的更新
2026年4月23日
最后验证
2026年4月1日
更多信息
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