The Air Test: A New Simple, Non-invasive Method to Diagnose Anesthesia-induced Atelectasis

Completed

• Conditions: Patients With ASA Status I-III Scheduled for Elective Surgery

• Registration Number: NCT02650037
• Lead Sponsor: Fundación para la Investigación del Hospital Clínico de Valencia

Brief Summary

Anesthesia-induced atelectasis persist in the postoperative period but are not usually diagnosed because imaging techniques are required. The aim of the study is to determine whether the value of SpO2≤96 while breathing room air (0.21 FiO2) for 5 min, maneuver that we defined as the Air Test, was able to diagnose atelectasis in the postoperative period after a general anesthesia.

Detailed Description

Not available

Study Timeline

• Study Start: 2014-11
• Primary Completion: 2015-02
• Study Completion: 2015-11
• Study First Submitted: 2015-12-28
• Status Verified: 2016-01
• Study First Submitted QC: 2016-01-07
• Last Update Submitted: 2016-01-07
• Study First Posted: 2016-01-08
• Last Update Posted: 2016-01-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 181

Inclusion Criteria

• ASA I-III
• Scheduled for elective surgery

Exclusion Criteria

• age of <18 years
• pregnant women
• previous lung resection
• local-regional anesthesia
• cardio-thoracic anesthesia
• preoperative room air SpO2 less than 97%

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Presence of postoperative atelectasis meassured by SpO2 levels and confirmed by computed tomography.	35 minutes post-surgery	After arrival to the post-surgery unit, patients received supplemental oxygen through a venturi mask with flow adjusted to approximate a FiO2 of 0.5 during the first 30 minutes. The SpO2 measure was made removing the oxygen mask and leaving the patients to breath room air for at least for 5 minutes.

Trial Locations

Locations (1)

Department of Anesthesia and Critical Care; Hospital Clinico Universitario; 🇪🇸 Valencia, Spain