Heart Ventricles
Conditions
Brief summary
Observational study of patients undergoing open heart surgery. During the procedure video clips of right heart are stored and compared to trans-oesophageal ultrasound recordings and ECG recordings.
Detailed description
Observational study of patients undergoing open heart surgery. During the procedure video clips of right heart are stored and compared to trans-oesophageal ultrasound recordings and ECG recordings. Right heart volume status and function is controlled and induced with theophylline and ventilator regulated positive end-expiratory pressure recordings.
Interventions
iv injection
Positive end-expiratory pressure variation
Myocardial movement videorecording
Sponsors
Study design
Masking description
video analysts do not get information of the clinical data or procedure phase
Intervention model description
Patients undergo medication intervention (w/intravenous theophylline) and ventilator volume adjustements, and serial ventricular function parameters are compared (pre-and post-intervention measurements).
Eligibility
Inclusion criteria
* open heart surgery, patient acceptance and informed consent, age 75 or more
Exclusion criteria
* patient refusal, psychiatric disorder or intoxication, irrepairable coronary artery disease, epilepsy or active neurological condition, active tbc or other contagious infection.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Heart ventricle function | Within the operation | Changes in heart ventricle contraction status |
Other
| Measure | Time frame | Description |
|---|---|---|
| ECG | Within the operation | Simultaneous ECG recording and analysis during outcome 4 measurements |
| Transesophageal ultrasound | Within the operation | Myocardial contraction range during video-clip |
| Cardiac output | Within the operation | Measurement of cardiac output |
Countries
Finland