Study on the Measurement Method of the Left Diaphragm
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Critical Illness. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
To Study the Consistency of Multiple Measurement Methods of Left Diaphragm Mobility in Critically Ill Patients
Overview
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
Primary outcome measures
- Consistency of diaphragmatic mobility measurements between the standard and modified positions on the left side. [Time frame: 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.]
Secondary outcome measures (2)
- Consistency of diaphragmatic excursion measurements between the standard position and the other four positions on the left side. [Time frame: 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. [Time frame: 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.]
Eligibility criteria
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.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Other
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07559669 · B2026-162