Patients scheduled for surgery under general anesthesia
Conditions
Interventions
Before induction of anesthesia in the operating room, ultrasound is used to identify the location of the left and right kidneys, and NIRS sensors are then applied to the corresponding areas on the bac
standard anesthetic management will be maintained, and NIRS values will be continuously monitored. The fraction of inspired oxygen (FiO2) will be maintained at 60% throughout the surgery.
Sponsors
Jichi medical university
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Patients aged 65 years or older Patients diagnosed with hypertension and receiving antihypertensive medication Patients scheduled for elective surgery requiring both arterial catheter insertion and cardiac output monitoring Patients scheduled for surgery in the supine position Patients in whom preoperative CT imaging shows a distance of less than 30 mm from the skin surface of the back to the surface of either kidney In the absence of preoperative trunk CT, patients with a body mass index (BMI) of less than 18
Exclusion criteria
Exclusion criteria: Patients with an ejection fraction <40% Patients with atrial fibrillation Patients with severe chronic obstructive pulmonary disease (COPD) Patients with right heart failure Patients undergoing surgery requiring one-lung ventilation Patients with chronic kidney disease (eGFR <60 mL/min/1.73 m2) Patients requiring cardiopulmonary bypass Patients undergoing aortic surgery Patients undergoing surgery involving the kidneys or adrenal glands Patients with documented carotid artery stenosis Patients in whom preoperative ultrasound on the day of surgery shows a distance of >30 mm from the skin surface to the kidney surface
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Renal tissue oxygenation measured by NIRS during surgery | — |
Secondary
| Measure | Time frame |
|---|---|
| cerebral tissue oxygenation measured by NIRS | — |
Countries
Japan
Contacts
Public ContactYUSUKE IIZUKA
Jichi medical university, saitama medical center Department of anesthesiology and critical care medicine
Outcome results
None listed