To assess peripheral perfusion blood flow. Peripheral perfusion index Tissue hypoperfusion
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. age between 18 and 80 years 2. American Society of Anesthesiologists (ASA) physical status II-III 3. undergoing elective coronary artery bypass surgery (CABG) under cardiopulmonary bypass assistance 4. Informed consent
Exclusion criteria
Exclusion criteria: 1. Peripheral vascular disease 2. Autonomic nervous system dysfunction such as diabetic mellitus with autonomic neuropathy or previous sympathectomy etc 3. Co-existing significant (severe) valvular heart disease 4. Abnormal hemoglobinemia such as methemoglobinemia or carboxyhemoglobinemia 5. Severe anemia or baseline hemoglobin <8 g/dL 6. Abnormal skin pigmentation of finger) 7. Persistent cardiac arrhythmia such as atrial fibrillation etc
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| direction and magnitude of PPI and systemic hemodynamic parameters start general anesthesia until 12 hours after operation pulse oximetry | — |
Secondary
| Measure | Time frame |
|---|---|
| determine relationship of PPI and tissue hypoperfusion start general anesthesia until 12 hours after operation lactate,To determine relationship and magnitude of PPI and body temperature gradient at different sites start general anesthesia until 12 hours after operation tempeture at different sites | — |
Contacts
Facuty of Medicine, Chiang Mai University