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Patients with severe traumatic brain injury (TBI) are at high risk for airway obstruction and hypoxia at the accident scene, and routine prehospital endotracheal intubation has been widely advocated. However, the effects on outcome are unclear. We therefore aim to determine effects of prehospital intubation on mortality and hypothesize that such effects may depend on the emergency medical service providers' skill and experience in performing this intervention. PubMed, Embase and Web of Science were searched without restrictions up to July 2015. Studies comparing effects of prehospital intubation versus non-invasive airway management on mortality in non-paediatric patients with severe TBI were selected for the systematic review. Results were pooled across a subset of studies that met predefined quality criteria. Random effects meta-analysis, stratified by experience, was used to obtain pooled estimates of the effect of prehospital intubation on mortality. Meta-regression was used to formally assess differences between experience groups. Mortality was the main outcome measure, and odds ratios refer to the odds of mortality in patients undergoing prehospital intubation versus odds of mortality in patients who are not intubated in the field. The study was registered at the International Prospective Register of Systematic Reviews (PROSPERO) with number CRD42014015506. The search provided 733 studies, of which 6 studies including data from 4772 patients met inclusion and quality criteria for the meta-analysis. Prehospital intubation by providers with limited experience was associated with an approximately twofold increase in the odds of mortality (OR 2.33, 95% CI 1.61 to 3.38, p<0.001). In contrast, there was no evidence for higher mortality in patients who were intubated by providers with extended level of training (OR 0.75, 95% CI 0.52 to 1.08, p = 0.126). Meta-regression confirmed that experience is a significant predictor of mortality (p = 0.009). Effects of prehospital endotracheal intubation depend on the experience of prehospital healthcare providers. Intubation by paramedics who are not well skilled to do so markedly increases mortality, suggesting that routine prehospital intubation of TBI patients should be abandoned in emergency medical services in which providers do not have ample training, skill and experience in performing this intervention.

Endotracheal intubation is a crucial intervention for mechanically ventilated patients in the intensive care unit (ICU). However, the presence of the tube and bite block in the mouth significantly raises the risk of mucosal pressure injuries (MMPI) and other oral complications. These complications not only compromise oral health but also prolong hospitalisation and increase medical costs. Despite advances in airway management, effective solutions to mitigate these risks remain limited. Few studies have explored reducing mucosal pressure and improving oral health by optimising the design and reducing the volume of oral devices. Therefore, this study aimed to design and evaluate a novel nested tracheal tube device to reduce oral MMPI and improve oral health outcomes in intubated patients. A prospective, non‐blinded, randomised, parallel‐controlled intervention study was conducted, involving 151 patients who were intubated for more than 48 h. Participants were randomly assigned into two groups: the intervention group (n = 75), which received the novel nested tracheal tube device, and the control group (n = 76), which received the standard endotracheal tube with bite block. The primary outcome measure was the incidence of MMPI. Secondary outcomes included the Beck Oral Health Score, plaque index, ventilator‐associated pneumonia (VAP) and costs. Compared to the standard group, the nested tracheal tube group showed a significant reduction in MMPI (χ2 = 8.796, p < 0.05). In addition, the nested tracheal tube group demonstrated significantly better outcomes in Beck Oral Health Scores (Z = −2.948, p < 0.05) and plaque index (Z = −2.010, p < 0.05), indicating improvements in oral function and hygiene. However, there were no significant differences between the two groups in VAP incidence and average daily ICU costs (p > 0.05). The nested tracheal tube effectively reduces localised pressure on oral tissues and improves oral function, offering a practical solution to mitigate MMPI in mechanically ventilated patients and enhance their oral health outcomes.

It is generally accepted that using a video laryngoscope is associated with an improved visualization of the glottis. However, correctly placing the endotracheal tube might be challenging. Channeled video laryngoscopic blades have an endotracheal tube already pre-loaded, allowing to advance the tube once the glottis is visualized. We hypothesized that use of a channel blade with pre-loaded endotracheal tube results in a faster intubation, compared to a curved Macintosh blade video laryngoscope. After ethical approval and informed consent, patients were randomized to receive endotracheal Intubation with either the King Vision® video laryngoscope with curved blade (control) or channeled blade (channeled). Success rate, evaluation of the glottis view (percentage of glottic opening (POGO), Cormack&Lehane (C&L)) and intubating time were evaluated. Over a two-month period, a total of 46 patients (control n = 23; channeled n = 23) were examined. The first attempt success rates were comparable between groups (control 100% (23/23) vs. channeled 96% (22/23); p = 0.31). Overall intubation time was significantly shorter with control (median 40 sec; IQR [24-58]), compared to channeled (59 sec [40-74]; p = 0.03). There were no differences in glottis visualization between groups. Compared with the King Vision channeled blade, time for tracheal intubation was shorter with the control group using a non-channeled blade. First attempt success and visualization of the glottis were comparable. These data do not support the hypothesis that a channeled blade is superior to a curved video laryngoscopic blade without tube guidance. ClinicalTrials.gov NCT02344030.

Background For both normal and difficult airway management, VL is thought to be more effective. However, VL seems far from being offered as a standard option in both healthcare delivery and educational activities in low-income countries, considering its high costs. Therefore, three-dimensional(3D)printed VLs may be considered an alternative to conventional VLs in low-income countries and other places with limited resources. Our objective was to compare the efficacy of AirAngel 3D-printed VL (3D-PVL) with those of commercially available Storz® VL (SVL) and conventional Macintosh® laryngoscope (MCL) in normal and difficult airway scenarios in the hands of inexperienced users. Methods This is a prospective randomized crossover manikin study that included 126 senior medical students with no experience in intubation. The effectiveness of all three laryngoscopy devices in the hands of inexperienced users was evaluated in terms of intubation time, glottic visualization, ease of use, endotracheal tube placement, and intubation success rate. Between 2020 and 2022, 126 last year medical students participated in the study. Results MCL resulted in significantly longer intubation times than 3D-PVL and SVL in the difficult airway scenario, with no significant difference between 3DPVL and SVL (Wilcoxon test, p  < 0.016; Bonferroni correction MCL: 28.54 s; SVL: 26.68 s; 3DPVL: 26.64 s). Both SVL and 3D-PVL resulted in significantly better Cormack − Lehane grades in both normal and difficult airway scenarios, and thus provided better glottic viewing than MCL, with no significant difference between 3D-PVL and SVL (Wilcoxon test, p  < 0.016; Bonferroni correction, MCL: 1.73; SVL: 1.29; 3DPVL: 1.25). The SVL was the easiest device to use for normal airway scenarios (1: very easy, 5: very difficult), while the MCL was the most difficult (MCL: 2.64; 3DPVL: 1.98; SVL: 1.49). Conversely, no significant difference was found between 3DPVL and other devices in terms of ease of use in difficult airway scenarios and in terms of accurate placement of the endotracheal tube and successful intubation attempts. Conclusion 3D-PVL is a good educational and possible clinical alternative to conventional VL, particularly in places with limited resources, due to its low cost.

IntroductionThe optimal method for removing the endotracheal tube (ETT) during extubation in the intensive care unit (ICU) remains uncertain. Two methods are described for removing the ETT in ICU, namely the ‘Traditional technique’ with continuous aspiration during cuff deflation and ETT removal; and the ‘PEEP’ method, which consists in applying positive end-expiratory pressure (PEEP) before and during cuff deflation and ETT removal. Our hypothesis is that applying PEEP during extubation in the ICU would improve clinical outcome.Methods and analysisThis is a prospective, multicentre, randomised, open-label, controlled, superiority trial, analysed by intention-to-treat, comparing ETT removal with concomitant suction vs application of PEEP before and during ETT removal. In total, 424 patients will be recruited and randomly assigned in a 1:1 ratio to one of two groups, according to the strategy of ETT removal. The primary outcome is the number of days free from any mechanical ventilation within 28 days following extubation. Secondary outcomes include the reintubation rate up to 7 days after ETT removal, the cumulative duration of non-invasive ventilation up to 7 days following extubation, the rate of acute respiratory failure, the rate of acquired pneumonia during the first 7 days following ETT removal, the length of stay in ICU and in hospital and all-cause mortality at 28 days following ETT removal.Ethics and disseminationThe study was approved by the Ethics Committee ‘CPP Ile de France II’. Patients will be included after providing written informed consent. The results will be submitted for publication in peer-reviewed journals, and in national and international congresses.Trial registration numberNCT05147636.

To evaluate postoperative reintubation incidence and identify risk markers to expedite the identification of high-risk patients after ICU admission. We performed this retrospective multicentre study that included postoperative adult patients admitted to Japanese ICUs between April 2015 and March 2022 using the Japanese Intensive care PAtient Database (JIPAD). Data regarding the patients treated in included ICUs were accumulated by the JIPAD, which we received for research use. Logistic regression analysis with generalised estimating equations was used to estimate odds ratios (ORs) of 1-standard deviation increments and 95 % confidence intervals (CIs) for the association of each variable available within 24 h after ICU admissions with reintubation. Among 13,219 admissions during the study period, 828 patients were postoperatively reintubated (incidence = 6.26 %, 95 % CI: 5.86–6.69). Maximum partial pressure of carbon dioxide (PaCO2), bilirubin, and blood urea nitrogen (adjusted OR = 1.138, 95 % CI: 1.055–1.228; adjusted OR = 1.101, 95 % CI: 1.018–1.191; and adjusted OR = 1.105, 95 % CI: 1.016–1.203, respectively) and body mass index (BMI) and minimum white blood cells counts (adjusted OR = 0.867, 95 % CI: 0.797–0.944; and adjusted OR = 0.878, 95 % CI: 0.815–0.946, respectively) were significantly associated with postoperative reintubation. Postoperative reintubation incidence in Japanese ICUs was estimated to be 6.26%. BMI, maximum PaCO2, clinical laboratory data reflecting surgical invasiveness, and immunosuppression may be risk markers for postoperative reintubation. Our study will help identify high-risk patients for postoperative reintubation early post-ICU admission, enabling early and focused nursing care to prevent reintubation, such as early mobilisation and ambulation.

Background Rapid sequence intubation (RSI) have been shown to be effective in preventing reflux aspiration in patients with a full stomach during anaesthesia induction and endotracheal intubation. However, there is currently no standardized operation protocol or anaesthesia induction drug standard for RSI. Furthermore, there is a lack of evidence regarding the use of RSI in patients older than 65. In this study, we aimed to investigate the cardiovascular effects of different doses of alfentanil combined with propofol and etomidate during RSI in elderly patients aged 65–80 years. Methods A total of 96 patients aged 65–80 years who underwent general anaesthesia with tracheal intubation were selected for this study. The patients were randomly assigned to one of four groups using a random number table. Group A patients received an induction dose of 10 µg/kg alfentanil, group B patients received 15 µg/kg alfentanil, group C patients received 20 µg/kg alfentanil, and group D patients received 25 µg/kg alfentanil. Heart rate (HR), mean arterial pressure (MAP), cardiac index (CI), and ejection fraction (EF) were measured at three time points: 5 min before anaesthesia induction (T0), 1 min after endotracheal intubation (T1), and 5 min after endotracheal intubation (T2). Concurrently, 4 ml of arterial blood was collected from patients at three time points, and the concentrations of norepinephrine (NE) and cortisol (Cor) in plasma were detected. Occurrences of hypertension, hypotension, bradycardia and tachycardia during anesthesia induction to 5 min after tracheal intubation were noted. Results Compared with T0, the HR, MAP, NE and Cor concentrations in group A and group B were increased at the T1 and T2 time points, CI and EF values were decreased ( P <  0.05). HR and MAP in groups C and D were increased at the T1 time point, while they were decreased at the T2 time point in group D ( P  < 0.05). The changes in CI and EF values, concentrations of NE and Cor, were not significant at T1 and T2 time points in group C ( P  > 0.05). Additionally, they were not significant in group D at the T1 time point ( P  > 0.05), but decreased at the T2 time point ( P  < 0.05). Compared with group A, the HR, MAP, NE and Cor concentrations in groups C and D were decreased at T1 and T2 time points ( P  < 0.05). The CI and EF values of groups C and D were increased at T1 time point but decreased at T2 time point in group D ( P  < 0.05). The incidence of hypertension and tachycardia in group A was significantly higher than that in group C and group D ( P  < 0.05), and the incidence of hypotension and bradycardia in group D was significantly higher than that in group A and group B ( P <  0.05). Conclusion Alfentanil 20 µg/kg for RSI in elderly patients, can effectively inhibit the violent cardiovascular reaction caused by intubation, and avoid the inhibition of cardiovascular system caused by large dose, hemodynamics more stable. Trial registration ChiCTR2200062034 ( www.chictr.org.cn ).