Intraoperative Air-Test

Incidence of Intraoperative Positive Air-Test

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03469648

Enrollment

180

Registered

2018-03-19

Start date

2018-03-10

Completion date

2018-04-20

Last updated

2018-10-02

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

Conditions

Patients With ASA Status I-III Scheduled for Surgery

Brief summary

Although imaging techniques are the reference standard to diagnose alveolar collapse, in the postoperative period and using the peripheral hemoglobin oxygen saturation (SpO2), a non-invasive simple and accurate test (Air-Test) was recently validated to diagnose alveolar collapse. The aim of this study is to non-invasively describe the incidence of intraoperative atelectasis with the Air-Test in an unselected surgical population. In addition, we attempt to describe the association between positive Air-Test and the patient´s preoperative or intraoperative variables.

Interventions

PROCEDUREAir-Test

The Air Test simply consisted in breathing room air for 5 min during anesthesia while measuring peripheral oxygen saturation by Pulse oximetry

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* American Society of Anesthesiologist (ASA) I-IV * General Anesthesia * Mechanical ventilation

Exclusion criteria

* age \< 18 years old * pregnancy * patients undergoing cardiothoracic surgery * ASA physical status V

Design outcomes

Primary

Measure	Time frame	Description
Patients with positive Air-Test	During surgery	Positive Air-Test defined as SpO2 \< 97% while breathing room air

Countries

Spain

Outcome results

None listed

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