None
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Age >= 18 years old; 2.No obvious abnormal lung diseases were found through lung CT, chest X-ray, or lung ultrasound examination; 3. Informed consent is given to all research methods, and a voluntary informed consent form is signed.
Exclusion criteria
Exclusion criteria: 1. Patients in the acute phase of a cardiopulmonary disease (including acute myocardial infarction, heart failure, respiratory failure, pleural effusion, or those requiring life support equipment to maintain cardiopulmonary function); 2. Severe chronic cardiopulmonary diseases, such as heart disease, cardiomyopathy, congenital heart disease, pulmonary fibrosis, chronic obstructive pulmonary disease (COPD), etc.; 3. Diseases related to the respiratory center, neuromuscular transmission disorders, diaphragmatic disorders, motor neuron diseases, etc.; 4. History of pulmonary, mediastinal, or abdominal surgery or tumors; 5. History of invasive mechanical ventilation within the past 3 months; 6. Pregnant women; 7. Poor patient compliance, inability to cooperate with the study, inability to obtain clear ultrasound images, or other factors rendering the subject unsuitable for inclusion; 8. Current participation in other interventional studies.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Muscle thickness;Shear wave velocity and elastic modulus value;Shear wave viscosity dispersion slope and viscosity modulus value; | — |
Countries
China
Contacts
Hebei General Hospital