Peer-reviewed veterinary case report
Predicting low oxygen after anesthesia in dogs using blood oxygen
By Kim, Minha et al.Ā·Published in Veterinary anaesthesia and analgesiaĀ·2025Ā·Department of Veterinary Clinical Sciences, South KoreaĀ·View original on PubMed ā
PetCaseFinder translated the abstract of this peer-reviewed paper into plain English so pet owners can read it. We do not publish original research ā every detail traces back to the citation above. How we work ā
Original publication title: Evaluating the ratio of arterial partial pressure of oxygen to inspired oxygen fraction and dynamic compliance following anesthetic induction for predicting postanesthetic hypoxemia in dogs.
- Species:
- dog
Plain-English summary
A group of 168 dogs undergoing anesthesia were monitored for breathing problems after surgery. Researchers found that dogs with lower levels of oxygen in their blood and lower lung compliance (how easily their lungs expand) were more likely to experience low oxygen levels after waking up. In fact, 22 of the dogs showed signs of hypoxemia (low oxygen), which was linked to these lower measurements. The study suggests that checking these values can help predict which dogs might have breathing issues after anesthesia, allowing veterinarians to take preventive measures.
People also search for: dog breathing problems after anesthesia Ā· post-anesthetic hypoxemia in dogs Ā· how to prevent low oxygen in dogs during surgery
Abstract
OBJECTIVE: To evaluate correlation between postanesthetic induction ratio of arterial partial pressure of oxygen to inspired oxygen fraction (PaO:FIO) and dynamic compliance (C) with postanesthetic hypoxemia [PaO< 80 mmHg (10.7 kPa)] in mechanically ventilated dogs, and to compare PaO:FIOand Cfor predicting postanesthetic hypoxemia. STUDY DESIGN: Retrospective, single-cohort, observational study. ANIMALS: A total of 168 dogs anesthetized with isoflurane under pressure-controlled ventilation. METHODS: Postinduction arterial blood gas (ABG) analysis was performed 5-40 minutes postintubation and following postextubation (room-air). Cvalues were matched to the nearest postinduction ABG measurement (within 15 minutes). PaO:FIOand Cvalues were categorized using thresholds of 300 mmHg (40.0 kPa) and 400 mmHg (53.3 kPa), and 1.0 and 1.5 mL cmHOkg. Linear-by-linear association was used to evaluate PaO:FIOand Cwith the prevalence of postanesthetic hypoxemia. Diagnostic accuracy of these variables was assessed using receiver operating characteristic (ROC) curve analysis. Optimal cut-off values for distinguishing hypoxemia were determined using the empirical quantile bootstrap method (fixed sensitivity of 95%). RESULTS: Postanesthetic hypoxemia was observed in 22/168 dogs. Lower postinduction PaO:FIO(p = 0.033) and C(p = 0.002) values were associated with a significantly higher prevalence of postanesthetic hypoxemia. The area under the ROC curve (AUC) of PaO:FIO{0.696 [95% confidence interval (CI): 0.599-0.807]} and C[0.716 (95% CI 0.602-0.824)] exhibited good (AUC 0.6-0.7) to satisfactory (AUC 0.7-0.8) diagnostic accuracy, with no significant difference between variables (p = 0.432). Optimal cut-off values were 332.80 mmHg (44.4 kPa) (95% CI 274.41-374.52 mmHg, 36.6-49.9 kPa) for PaO:FIOand 1.01 (95% CI 0.86-1.13) mL cmHOkgfor C. CONCLUSIONS AND CLINICAL RELEVANCE: Postanesthetic hypoxemia was more frequently observed in dogs with low postinduction PaO:FIOand C. These variables had good to satisfactory diagnostic accuracy.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases āOriginal publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40754517/