Observational studyBMJ open2017
The accuracy of postoperative, non-invasive Air-Test to diagnose atelectasis in healthy patients after surgery: a prospective, diagnostic pilot study.
Observational study in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 20 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Estudio de validación de la pulsioximetría Como método diagnóstico no Invasivo de Atelectasia Pulmonar y de la Efectividad de la Maniobra de Capacidad Vital Para la reversión de la Atelectasia Durante el Postoperatorio
Incidence of Intraoperative Positive Air-Test
Accuracy Of Air Test In Diagnosis Of Postoperative Lung Atelectasis In Elderly Patients Undergoing Major Orthopedic Surgery
Who cites it
20 citing papers in PubMed.
- Effects of 30% vs. 60% inspired oxygen fraction during mechanical ventilation on postoperative atelectasis: a randomised controlled trial.BMC anesthesiology · 2023Trial
- Multimodal non-invasive monitoring to apply an open lung approach strategy in morbidly obese patients during bariatric surgery.Journal of clinical monitoring and computing · 2020Trial
- Lung ultrasound score to determine the effect of fraction inspired oxygen during alveolar recruitment on absorption atelectasis in laparoscopic surgery: a randomized controlled trial.BMC anesthesiology · 2020Trial
- Air-Test for prediction of postoperative pulmonary complications after general anaesthesia: promise, performance and limitations.Journal of thoracic disease · 2026Article
- Novel approach to estimate respiratory quotient from the alveolar gas equation: a proof-of-concept study in pigs.Intensive care medicine experimental · 2026Article
- Article
- Respiratory variation in carotid artery blood flow peak velocity combined with tidal volume challenge in predicting fluid responsiveness of lung-protective ventilation patients: a feasibility study.Journal of clinical monitoring and computing · 2026Article
- Influence of the end inspiratory pause on ventilatory efficiency and respiratory mechanics in patients undergoing robotic surgery under a tailored open lung approach: a prospective-paired study.Anaesthesiology intensive therapy · 2025Article
- Postoperative Pulmonary Complications After Laparoscopic Surgery: Risk Factors and Predictive Scores.Medicina (Kaunas, Lithuania) · 2025Observational
- Capnodynamic assessment of mixed venous oxygen saturation in a porcine experimental endotoxemic model.Scientific reports · 2024Article
- Validation of an alternative technique for RQ estimation in anesthetized pigs.Intensive care medicine experimental · 2024Article
- Article
- Procedural sedation duration and the relation with formation of atelectasis and respiratory complaints.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2023Article
- Driving Pressure-Guided Ventilation in Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy: A Randomized Controlled Trial.Diabetes, metabolic syndrome and obesity : targets and therapy · 2023Article
- Non-invasive capnodynamic mixed venous oxygen saturation during major changes in oxygen delivery.Journal of clinical monitoring and computing · 2022Article
- Positive end-expiratory pressure individualization guided by continuous end-expiratory lung volume monitoring during laparoscopic surgery.Journal of clinical monitoring and computing · 2022Article
- Perioperative Pulmonary Atelectasis: Part II. Clinical Implications.Anesthesiology · 2022Review
- Feasibility of postural lung recruitment maneuver in children: a randomized, controlled study.The ultrasound journal · 2020Article
- Diagnosis and treatment of obstructive atelectasis after general anesthesia in a patient with abscess in the maxillofacial area: A case report.Journal of dental anesthesia and pain medicine · 2018Article
- WHO Needs High FIOTurkish journal of anaesthesiology and reanimation · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
18 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo assess the diagnostic accuracy of peripheral capillary oxygen saturation (SpO
designProspective cohort study. Diagnostic accuracy was assessed by measuring the agreement between the index test and the reference standard CT scan images.
settingPostanaesthetic care unit in a tertiary hospital in Spain.
participantsThree hundred and fifty patients from 12 January to 7 February 2015; 170 patients scheduled for surgery under general anaesthesia who were admitted into the postsurgical unit were included.
interventionThe Air-Test was performed in conscious extubated patients after a 30 min stabilisation period during which they received supplemental oxygen therapy via a venturi mask. The Air-Test was defined as positive when SpO
main outcome measuresThe primary study outcome was assessment of the accuracy of the Air-Test for detecting postoperative atelectasis compared with the reference standard. The secondary outcome was the incidence of positive Air-Test results.
resultsThe Air-Test diagnosed postoperative atelectasis with an area under the receiver operating characteristic curve of 0.90 (95% CI 0.82 to 0.98) with a sensitivity of 82.6% and a specificity of 87.8%. The presence of atelectasis was confirmed by CT scans in all patients (30/30) with positive and in 5 patients (17%) with negative Air-Test results. Based on the Air-Test, postoperative atelectasis was present in 36% of the patients (62 out of 170).
conclusionThe Air-Test may represent an accurate, simple, inexpensive and non-invasive method for diagnosing postoperative atelectasis.
trial registrationNCT02650037.
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Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.