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Research on the Measurement Method of the Left Diaphragm in Critically Ill Patients

Correlation Study of Multiple Measurement Methods for Left diaphragm Mobility in Critical care Patients

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600126476
Enrollment
Unknown
Registered
2026-06-09
Start date
2026-06-15
Completion date
Unknown
Last updated
2026-06-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Critical care unite patients

Interventions

Invasive respiratory support group:None
Non-invasive respiratory support group:None

Sponsors

Zhongshan Hospital, Fudan University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Adult patients (>=18 years old) of both sexes; 2.In invasive group, intubation or tracheotomy was changed to 5L/min T-tube or tracheotomy mask oxygen inhalation; 3.Patients in non-invasive group were treated with mask oxygen 5L/min; 4.agree to participate in the trial and sign the informed consent;

Exclusion criteria

Exclusion criteria: 1.The diaphragm ultrasound operation site was large, which resulted in inability to obtain images; 2.Diaphragmatic ultrasound images could not be obtained in any section; 3.The ultrasound image quality of any section was poor; 4.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;

Design outcomes

Primary

MeasureTime frame
Consistency between the standard measurement of left diaphragm excursion (L-DDrp) and the modified diaphragm excursion method (L-DDap);

Secondary

MeasureTime frame
The consistency of the standard operation for the mobility of the left and right diaphragms of the patient and the other nine methods;

Countries

China

Contacts

Public ContactLiu Kai

Zhongshan Hospital, Fudan University

liu.kai1@zs-hospital.sh.cn+86 13512136346

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jun 21, 2026