Ultrasound for Postop Lung Issues in Low-Flow Anesthesia

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

110 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-02-15

Study Completion Date

2026-03-01

Brief Summary

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Detecting possible atelectasis and other respiratory problems that may develop immediately after extubation via lung ultrasonography can reduce pulmonary complications by performing necessary interventions such as oxygen support, respiratory exercises, mobilization, and non-invasive mechanical ventilation applications at an early stage. In addition, although low-flow anesthesia is frequently used in daily anesthesia practice, publications showing the effects of its use in laparoscopic cholecystectomy operations on pulmonary complications are limited. On this occasion, this study can be presented as a contribution to the literature.

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Detailed Description

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Postoperative atelectasis is a common complication that can develop in all patients receiving general anesthesia. The frequency of atelectasis increases due to increased intraabdominal pressure, especially in laparoscopic surgeries performed with pneumoperitoneum. For this reason, in order to prevent postoperative complications related to the lungs, it is extremely important to recognize atelectasis at an early stage, as well as to recognize the mechanisms that will cause atelectasis and avoid them.

Lung ultrasonography (Lung USG) draws attention for the rapid, cheap, safe and reliable detection of postoperative atelectasis. The fact that it can be applied at the bedside and can be easily repeated makes this method valuable. In the literature and in daily practice, it is seen that anesthesiologists commonly apply inhalation anesthesia with different fresh gas flow (FGF) rates during general anesthesia.

As defined by Baker and Simionescu, in low-flow anesthesia, FGF varies between 0.5 and 1 liter per minute. It has been shown that all types of flow are safe with modern anesthesia machines.

This study aims to demonstrate the effect of low-flow anesthesia (LFA) on pulmonary complications and, in particular, atelectasis that may develop after laparoscopic cholecystectomy operations, using a non-invasive, rapidly applicable, and proven method such as Lung USG.

Conditions

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Atelectasis, Postoperative Cholecystitis; Gallstone Pulmonary Atelectasis

Study Design

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Observational Model Type

OTHER

Study Time Perspective

PROSPECTIVE

Study Groups

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Low-Flow Anesthesia Group

As this study is observational in nature, no interventions will be performed by the research team. The study will involve a single group, within which the incidence and prevalence of the outcomes will be assessed.

No-intervention

Intervention Type OTHER

No interventions will be performed by the research team.

Interventions

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No-intervention

No interventions will be performed by the research team.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients with informed consent
* Patients scheduled for laparoscopic cholecystectomy
* Patients with a Body Mass Index between 18-35 kg/m²
* Patients in the American Society of Anesthesiologist (ASA) 1-2-3 category

Exclusion Criteria

* Patients with emergency surgery planned
* Patients with ASA 4 and above
* Patients with lung disease
* Patients who have undergone thoracic surgery
* Pregnancy
* Patients with a preoperative Lung Ultrasound Score of 2 or 3 in any lung region

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No