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Recruiting NCT06824506

Ultrasound for Postop Lung Issues in Low-Flow Anesthesia

— Observational Atelectasis, Postoperative Cholecystitis; Gallstone Pulmonary Atelectasis

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: No-intervention.
Who it may be relevant to
Registry conditions: Atelectasis, Postoperative, Cholecystitis; Gallstone, Pulmonary Atelectasis. Basic parameters: from 18 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Turkey (Türkiye)
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Evaluation of Early Postoperative Pulmonary Complications That Can be Detected by Ultrasonography in Patients Undergoing Laparoscopic Cholecystectomy With Low-flow Anesthesia

Overview

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.

Detailed description

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.

Interventions

  • Other No-intervention
    No interventions will be performed by the research team.

Primary outcome measures

  • incidence of postoperative atelectasis [Time frame: 1 hour peroperatively]
Secondary outcome measures (1)
  • incidence of other postoperative pulmonary complications [Time frame: 1 hour peroperatively]

Eligibility criteria

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

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model
Other

Study locations

Turkey (Türkiye) · 1 center
  • Ankara Ataturk Sanatorium Research and Training Hospital — Ankara

Identifiers

NCT: NCT06824506 · SanatoryumEAH-AK-01

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗