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Adjustment of inhaled oxygen concentration during general anesthesia using Enhanced Oxygen Reserve Index (eORi), a new oxygenation reserve parameter

Adjustment of inhaled oxygen concentration during general anesthesia using Enhanced Oxygen Reserve Index (eORi), a new oxygenation reserve parameter

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1022220035
Enrollment
20
Registered
2022-12-23
Start date
2022-12-23
Completion date
Unknown
Last updated
2025-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

patients undergoing general anesthesia anesthesia

Interventions

A catheter that can measure blood pressure is inserted into the artery, and approximately 1 ml of blood is collected four times for arterial blood gas analysis.

Sponsors

Satoki Inoue
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) Patients aged 20 years or older who have explained the contents of the study and obtained written consent (informed consent) to participate in the study. (2) Patients with scheduled surgery for ASA (American Society of Anesthesiology Preoperative Status Classification) 1 or 2 performed under general anesthesia (3) Patients who insert a catheter that can measure blood pressure into an artery after induction of general anesthesia in the operating room. This catheter is inserted when it is judged necessary for surgery, and is not inserted only for this research purpose.

Exclusion criteria

Exclusion criteria: (1) difficult tracheal intubation is expected before surgery (2) an inability to wear the sensor due to deformity of fngers or an inadequate signal due to hypoperfusion of the fngers (3) cardiac or pulmonary disease (e.g. chronic obstructive pulmonary disease, interstitial pneumonia) (4) preoperative anemia due to hemoglobinopathies (e.g. sickle cell disease, thalassemia).

Design outcomes

Primary

MeasureTime frame
Relationship between inhaled oxygen concentration and eORi

Contacts

Public ContactIshido Hidemi

Fukushima Medical University

ishido@fmu.ac.jp+81-24-547-1342

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Feb 4, 2026