ABSTRACT
Background: "Difficult airway" is the clinical situation in which a conventionally trained anesthesiologist experiences difficulty with mask ventilation, laryngoscopy, and difficulty with tracheal intubation, or both. Associated factors and predictive value difficult airways, maxillofacial surgery study setup is under studied. Objective: To determine the magnitude and associated factors of difficult airways and predictive value of airway examinations among adult patients who underwent maxillofacial surgery at public hospitals in Southern Ethiopia 2022. Methods and materials: An institutional-based multicenter cross-sectional study was conducted among 250 maxillofacial patients from March to 30 June 2022 at selected hospitals. The data were entered into Epi_Data software version 4.3 and analyzed by STATA software version 14. All variables that were statistically significant in bivariate analysis, at the P less than 0.25, were included in the multivariate logistic regression analysis. The predictive value or the effectiveness of airway examinations in predicting difficult airways was analyzed by receiver operating curve. Results: In the current study, the magnitude of difficult airways was 21.2% (95% CI = 16.3-26.1%) and the magnitude of difficult intubation, difficult laryngoscopy, and difficult mask ventilation was 6.4% (95% CI 3.3-9.4%), 9.6% (95% CI 6.1-13%), and 13.6% (95% CI (9.1-16.8%), respectively. History of head and neck surgery adjusted odds ratio (AOR)=6.3, 95% CI (2.85-14.34), cervical collar AOR=4.9, 95% CI (1.96-12.49), and cervical spine injury AOR=2.4, 95% CI (1.07-5.38) were independently and significantly associated with difficulty of airway. Modified Mallampati class and sternomental distance were identified as good preoperative tests to predict difficult laryngoscopy, intubation, and mask ventilation. Conclusion and recommendation: The magnitude of difficult airways was maxillofacial surgery. Among various airway assessment tests, no single test was perfectly accurate. Anaesthesia professionals are recommended to use a combination of preoperative airway assessments.
ABSTRACT
BACKGROUND: Spinal anaesthesia complicates maternal hemodynamic and may expose the parturient to dangerous cardiovascular problems. Up to 7% to 89.2% of pregnant women can suffer from spinal anaesthesia-related hypotension. The aim of this study to compare the hemodynamic changes between preeclamptic and normotensive parturients who underwent caesarean section under spinal anaesthesia at North Showa Zone Public Hospitals, Oromia Region, from February 15 to May 15, 2022. METHODS: A prospective cohort study was conducted on a total of 140 parturients (70 in each group) who underwent cesarean delivery under spinal anesthesia. The study participants were chosen using a consecutive sampling technique. Data were collected from patient charts and intraoperative observations and entered into the Epi Data software version 4.6 and exported to the Statistical Package for the Social Sciences version 25 software. Hemodynamic change = (baseline value-current value/baseline value) * 100. The independent t-test, Mann-Whitney U test, two ways mixed ANOVA, chi-square, and Fisher's exact test was used to analyze the data as appropriate. A P < 0.05 was statistically significant. RESULTS: The mean percentage change in SBP, DBP, and MAP after spinal anaesthesia was a statistically significant difference between the normotensive and preeclamptic groups, except MAP at 15 min was comparable between the two groups with p = 0.638. The proportion of preeclamptic parturients who develop hypotension was 47%, compared to 74% of normotensive parturients, and the RR of developing hypotension, if participants were preeclamptic, was 0.63, with a 95% confidence interval of 0.412 to 0.978 and a p = 0.039. The mean change in heart rate during the first 15 min was comparable between the groups. CONCLUSION: In contrast to normotensive parturients undergoing caesarean section under spinal anaesthesia, our study found that the hemodynamic change was lower in preeclamptic parturients. The proportion of preeclamptic women who develop hypotension was 47%, compared to 74% of normotensive parturients.