heart failure
Conditions
Interventions
Respiration-Synchronized Stimulation Group:A diaphragmatic electrical stimulation protocol that delivers stimulation during the inspiratory phase, synchronized with the patients spontaneous breathing
Fixed-Frequency Stimulation Group:A method of diaphragmatic electrical stimulation that paces the phrenic nerve at a preset frequency.
Sponsors
Fuwai Hospital, Chinese Academy of Medical Sciences
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Hospitalized due to heart failure; 2. Dyspnea with a Borg scale score = 3 points; 3. Diaphragmatic excursion < 2 cm as measured by ultrasonography; 4. New York Heart Association (NYHA) functional class II-IV; 5. Age between 18 and 80 years; 6. Provided informed consent to participate in the study.
Exclusion criteria
Exclusion criteria: 1. Patients scheduled for emergency surgery based on clinical evaluation (e.g., infective endocarditis, acute coronary syndrome, cardiac tamponade, etc.); 2. Use of intra-aortic balloon pump (IABP), extracorporeal membrane oxygenation (ECMO), continuous renal replacement therapy (CRRT), or left ventricular assist device (LVAD) at admission; 3. Pregnant patients; 4. Body Mass Index (BMI) > 30; 5. Use of a cardiac pacemaker or implantable cardioverter-defibrillator (ICD); 6. Presence of open wounds in the thoracic area or thoracic deformities; 7. Poor diaphragmatic acoustic window, precluding adequate diaphragmatic assessment; 8. Patients receiving invasive mechanical ventilation; 9. Current use of sedative or analgesic medications (e.g., Sufentanil); 10. Patient declined to participate in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| thickness of diaphragm; | — |
Secondary
| Measure | Time frame |
|---|---|
| diaphragm movement; | — |
Countries
China
Contacts
Public ContactYiyao Shi
Fuwai Hospital, Chinese Academy of Medical Sciences
Outcome results
None listed