Minimizing atelectasis formation during general anaesthesia-oxygen washout is a non-essential supplement to PEEP.

What Was Tested

This randomized controlled trial looks at Copper (Supplement).

Following preoxygenation and induction of anaesthesia, most patients develop atelectasis.

Who Took Part

According to the abstract, 24 patients were involved.

By PubMed's age tags, the people studied were adults, middle-aged adults and older adults, both men and women.

The researchers randomly assigned 24 patients to either a control group (n = 12) or an intervention group (n = 12) receiving an oxygen washout procedure directly after intubation.

How the Study Was Run

In design terms this was a randomized study.

The patients were allocated by chance, so the Copper (Supplement) group and the comparison group should start out alike.

Both groups were, depending on body mass index, ventilated with a positive end-expiratory pressure (PEEP) of 6-8 cmH2O during surgery.

Oxygenation levels were evaluated by measuring blood gases and calculating estimated venous admixture (EVA).

What Was Measured

PubMed files the paper under topics including Anesthesia, Anesthesia, General, Blood Gas Analysis, Body Mass Index, Lung, Oxygen and Positive-Pressure Respiration.

The authors tagged it with the keywords Atelectasis, PEEP, computed tomography, general anaesthesia, oxygenation and protective ventilation.

What This Means in Plain Language

The paper is a randomized study of Copper (Supplement) in 24 patients.

With fewer than 40 people, it is a small study, so it is better read as an early signal for further research than as a settled answer.

The abstract goes on to report its results in about 6 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2017 (Upsala journal of medical sciences), a journal based in Sweden.

More context: the Copper (Supplement) compound page, all human trials.