Low-Flow Anesthesia, Perfusion Index, Postoperative Recovery
Conditions
Brief summary
This study aims to evaluate changes in perfusion index (PI) in pediatric patients undergoing elective surgery under low-flow anesthesia. PI will be monitored at multiple intraoperative and postoperative time points to assess its relationship with hemodynamic stability and depth of anesthesia. The study will also investigate whether low-flow anesthesia affects the incidence of emergence agitation (EA). Patients will be assigned to either low-flow or normal-flow anesthesia groups based on routine clinical practice. No intervention will be applied beyond standard care. The findings are expected to provide insight into the predictive value of PI in postoperative recovery and support safer anesthesia practices in pediatric populations.
Interventions
PROCEDURELow-Flow Anesthesia (LFA)
General anesthesia with a fresh gas flow rate of 1 L/min (50% oxygen + 50% air).
Sponsors
Istinye University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
DOUBLE (Subject, Investigator)
Masking description
Group allocation is determined by the anesthesia provider during routine care. Both the participant and the outcome assessor are blinded to group assignment. Data analysis is performed without group identifiers.
Intervention model description
ediatric patients undergoing elective surgery will be followed in two naturally assigned groups based on anesthesia flow rate: low-flow (LFA) and normal-flow (HFA). No intervention will be applied outside routine clinical care, and all data will be collected through perioperative monitoring.
Eligibility
Sex/Gender
ALL
Age
2 Years to 12 Years
Healthy volunteers
No
Inclusion criteria
* ASA I-II pediatric patients * Age 2 to 12 years * Undergoing elective surgery lasting between 1-6 hours * Informed consent obtained from parents/guardians
Exclusion criteria
* Cardiovascular, respiratory, neurological, metabolic, or endocrine disorders * Premature birth with corrected age \< 2 years * Obesity or severe malnutrition (BMI \<5th or \>95th percentile) * Psychiatric or neurodevelopmental disorders (e.g., autism) * Malignant hyperthermia or hypersensitivity to anesthetics * Emergency surgeries * Lack of IV access requiring inhalational induction * Contraindications to low-flow anesthesia including: * Severe pulmonary disease * Congenital heart disease with shunt physiology * Anticipated high oxygen demand * Airway obstruction risk * Surgeries requiring high gas flow or \>6 hours duration
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Perfusion Index (PI) | From induction to 30 minutes after extubation | Perfusion Index (PI) will be measured at 11 predefined perioperative time points to assess its intraoperative variation and its potential correlation with anesthesia depth and emergence profile in pediatric patients undergoing low-flow vs normal-flow anesthesia. |
Countries
Turkey (Türkiye)
Contacts
Primary Contactilke dolgun
Outcome results
None listed