Heart Failure
Conditions
Interventions
Gold Standard:Ultrasonographic Assessment
Index test:Electrical Impedance Tomography (EIT)
Sponsors
Fuwai Hospital, Chinese Academy of Medical Sciences
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Age 18-80 years. 2. Killip class II-IV. 3. Ability to breathe spontaneously and calmly, and to cooperate in following breathing training instructions. 4. Borg score for dyspnea >= 3. 5. Diaphragmatic excursion < 2 cm, as measured by diaphragmatic ultrasonography. 6. Intact chest wall skin. 7. Participants who can understand the study purpose, voluntarily participate and sign the informed consent form, and agree to comply with the protocol requirements to complete the examinations.
Exclusion criteria
Exclusion criteria: 1. Patients clinically assessed and planned for emergency surgery (e.g., infective endocarditis, acute coronary syndrome, cardiac tamponade, etc.). 2. Patients already supported with Intra-aortic Balloon Pump (IABP), Extracorporeal Membrane Oxygenation (ECMO), Continuous Renal Replacement Therapy (CRRT), or Left Ventricular Assist Device (LVAD) at the time of admission. 3. Presence of acute pulmonary edema (e.g., manifesting as orthopnea, coughing up pink, frothy sputum) or cardiogenic shock. 4. Implantation of a cardiac pacemaker or Implantable Cardioverter-Defibrillator (ICD). 5. Presence of severe cardiac arrhythmias (e.g., atrial fibrillation). 6. Chest wall deformity (e.g., severe scoliosis). 7. Poor diaphragmatic acoustic window, preventing adequate diaphragmatic assessment. 8. Co-existing other pulmonary diseases (e.g., COPD, pneumothorax) or diaphragmatic paralysis. 9. Pregnancy or lactation. 10. Severe obesity (Body Mass Index [BMI] >= 35). 11. Participants deemed by the investigator to have poor compliance and unlikely to complete the study as required
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Agreement between EIT-derived diaphragmatic excursion and ultrasonographically measured diaphragmatic excursion;Agreement between EIT-derived diaphragmatic excursion and ultrasonographically measured diaphragmatic excursion; | — |
Countries
China
Contacts
Public ContactYiyao Shi
Fuwai Hospital, Chinese Academy of Medical Sciences
Outcome results
None listed