None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) Surgical patients with invasive arterial pressure monitoring according to their condition; 2) Aged 18-70 years; 3) ASA grade I-III; 4) Patients who volunteer and sign informed consent.
Exclusion criteria
Exclusion criteria: 1) Patients using cardiopulmonary machine and defibrillator; 2) Patients with severe peripheral vascular disease; 3) Patients with severe arrhythmia that affect peripheral perfusion; 4) Patients with vasospasm diseases; 5) Severe malformations or external dyes in monitoring areas; 6) Preoperative or intraoperative use of contrast media or intravascular dye; 7) Patients with elevated bilirubin level; 8) Patients with hypoxemia; 9) Patients with methemoglobinemia; 10) Patients with hematological diseases related to red blood cells or hemoglobin; 11) Surgery requiring hypothermia; 12) Other diseases considered unsuitable for participation in this clinical trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Hemoglobin;ACC; | — |
Countries
China
Contacts
Chongqing Xinqiao Hospital