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Assessing Lung Dynamics and Respiratory Functions in Minimal Flow Anesthesia: A Prospective Study

EVALUATION OF LUNG DYNAMICS AND RESPIRATORY FUNCTIONS IN PATIENTS APPLIED WITH MINIMAL FLOW ANESTHESIA: A PROSPECTIVE, RANDOMIZED STUDY

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06055335
Enrollment
60
Registered
2023-09-26
Start date
2021-06-02
Completion date
2022-04-27
Last updated
2023-09-26

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

Conditions

Compliance, Patient, Medium Flow Anesthesia, Minimal Flow Anesthesia, Peak Inspiratuar Pressure, Pulmonary Function Test

Brief summary

The patients were randomized into two groups medium flow anesthesia (MeFA) and minimal flow anesthesia (MiFA). While MeFA received medium flow anesthesia with 2 lt/min, MiFA received minimal flow anesthesia with 0.5 lt/min fresh gas flow. In both groups dynamic compliance values, peak inspiratory pressure (PIP) values, total inhalation anesthetic drug consumption, total remifentanil drug consumption, duration of anesthesia, and duration of surgery were recorded. The FVC, FEV1, and FEV1/FVC values of the patients in both groups were evaluated and noted 24 hours before the operation, after the operation 2nd, 8th, and 24th hours.

Interventions

OTHERMedium flow anesthesia

Group MeFA; after reaching the MAC 1 value with 4lt/min 50% O2 - 50% air and 8% desflurane with remifentanil infusion, medium flow anesthesia was started with 2 lt/min 50% O2 - 50% air with MAC 1 concentration desflurane. The vaporizer was closed at the end of the last suture, and the flow was increased to 80% oxygen at 6 lt/min.

Group MiFA; after reaching the MAC 1 value with 4 lt/min 50% O2 - 50% air and 8% desflurane with remifentanil infusion, minimal flow anesthesia was started with 0.50 lt/min 50% O2 - 50% air with MAC 1 concentration of desflurane. The vaporizer was closed at the end of the last suture, and the flow was increased to 80% oxygen at 6 lt/min.

Sponsors

Ataturk University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
SINGLE (Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* ASA I-II * 18-65 years of age, who will undergo elective laparoscopic cholecystectomy surgery

Exclusion criteria

* ASA III-IV * Smokers * Body mass index (BMI) \> 40 kg / m2, * Patients with cardiovascular system disease * Chronic respiratory diseases, * Patients whose pulmonary function tests cannot be applied and who have problems with pulmonary function tests during the examination of the chest disease consultant

Design outcomes

Primary

MeasureTime frameDescription
Peak inspiratory pressure assessment5th minutes after endotracheal intubationPeak inspiratory pressure will be assessed 5th minutes after endotracheal intubation
Dynamic Compliance assessment5th minutes after endotracheal intubationDynamic Compliance will be assessed 5th minutes after endotracheal intubation

Secondary

MeasureTime frameDescription
FEV1 measures assessment24 hours before the operationFEV1 measures assessment will be assessed 24 hours before the operation
FEV1 measures assessmentt8th hour after the operationFEV1 measures assessment will be assessed 8th hours after the operation
FVC measures assessment24 hours before the operationFVC measures assessment will be assessed 24 hours before the operation
FEV1/FVC measures assessment24 hours before the operationFEV1/FVC measures assessment will be assessed 24 hours before the operation

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026