Impact of sleep disturbances on outcomes in intensive care units.

BACKGROUND: Sleep deprivation is common in intensive care units (ICUs) and may alter respiratory performance. Few studies have assessed the role of sleep disturbances on outcomes in critically ill patients. OBJECTIVES: We hypothesized that sleep disturbances may be associated with poor outcomes in ICUs. METHODS: Post-hoc analysis pooling three observational studies assessing sleep by complete polysomnography in 131 conscious and non-sedated patients included at different times of their ICU stay. Sleep was assessed early in a group of patients admitted for acute respiratory failure while breathing spontaneously (n = 34), or under mechanical ventilation in patients with weaning difficulties (n = 45), or immediately after extubation (n = 52). Patients admitted for acute respiratory failure who required intubation, those under mechanical ventilation who had prolonged weaning, and those who required reintubation after extubation were considered as having poor clinical outcomes. Durations of deep sleep, rapid eye movement (REM) sleep, and atypical sleep were compared according to the timing of polysomnography and the clinical outcomes. RESULTS: Whereas deep sleep remained preserved in patients admitted for acute respiratory failure, it was markedly reduced under mechanical ventilation and after extubation (p < 0.01). Atypical sleep was significantly more frequent in patients under mechanical ventilation than in those breathing spontaneously (p < 0.01). REM sleep was uncommon at any time of their ICU stay. Patients with complete disappearance of REM sleep (50% of patients) were more likely to have poor clinical outcomes than those with persistent REM sleep (24% vs. 9%, p = 0.03). CONCLUSION: Complete disappearance of REM sleep was significantly associated with poor clinical outcomes in critically ill patients.

Factors Associated With Post-Extubation Stridor in Infants Intubated in the Pediatric ICU.

BACKGROUND: Post-extubation stridor (PES) is a common problem in the pediatric intensive care unit (PICU) and is associated with extubation failure, longer length of stay, and increased mortality. Infants represent a large proportion of PICU admissions and are at higher risk for PES, making identification and mitigation of factors associated with PES important in this age group. RESEARCH QUESTION: What factors are associated with PES in infants (age less than 1 year) intubated in the PICU? STUDY DESIGN & METHODS: The primary outcome was PES as defined by the need for racemic epinephrine within 6 h of extubation. Secondary outcomes were heliox administration and reintubation. Statistical analyses were performed with Fisher's exact test for univariate analyses and multivariate logistic regression. RESULTS: 518 patient charts were retrospectively reviewed. 24.1% of patients developed PES. Duration of mechanical ventilation greater than 48 h was associated with increased risk of PES (odds ratio [OR] = 1.75, 95% confidence interval [CI] 1.13-2.71, P = .01), as was nonelective intubation (OR = 2.92, 95% CI 1.91-4.46, P < .01). The presence of a cuff, gastroesophageal reflux disease, prematurity, and known upper airway abnormality had no association with PES. 4.0 endotracheal tubes (ETTs) had an increased association with PES compared to 3.5 ETTs (OR = 1.96, 95% CI 1.18-3.27, P < .01). There was no difference in risk of PES between 3.5 and 3.0 ETTs. INTERPRETATION: In infants intubated in the PICU, mechanical ventilation greater than 48 h and nonelective intubation were associated with PES. 4.0 ETTs were associated with higher risk of PES compared to 3.5 ETTs. These findings may help providers in ETT selection and to identify infants that may be at increased risk of PES.

Executive Summary: International Clinical Practice Guidelines for Pediatric Ventilator Liberation, A Pediatric Acute Lung Injury and Sepsis Investigators (PALISI) Network Document.

Rationale: Pediatric-specific ventilator liberation guidelines are lacking despite the many studies exploring elements of extubation readiness testing. The lack of clinical practice guidelines has led to significant and unnecessary variation in methods used to assess pediatric patients' readiness for extubation. Methods: Twenty-six international experts comprised a multiprofessional panel to establish pediatrics-specific ventilator liberation clinical practice guidelines, focusing on acutely hospitalized children receiving invasive mechanical ventilation for more than 24 hours. Eleven key questions were identified and first prioritized using the Modified Convergence of Opinion on Recommendations and Evidence. A systematic review was conducted for questions that did not meet an a priori threshold of ⩾80% agreement, with Grading of Recommendations, Assessment, Development, and Evaluation methodologies applied to develop the guidelines. The panel evaluated the evidence and drafted and voted on the recommendations. Measurements and Main Results: Three questions related to systematic screening using an extubation readiness testing bundle and a spontaneous breathing trial as part of the bundle met Modified Convergence of Opinion on Recommendations criteria of ⩾80% agreement. For the remaining eight questions, five systematic reviews yielded 12 recommendations related to the methods and duration of spontaneous breathing trials, measures of respiratory muscle strength, assessment of risk of postextubation upper airway obstruction and its prevention, use of postextubation noninvasive respiratory support, and sedation. Most recommendations were conditional and based on low to very low certainty of evidence. Conclusions: This clinical practice guideline provides a conceptual framework with evidence-based recommendations for best practices related to pediatric ventilator liberation.

Assessing the reproducibility and predictive value of objective cough measurement for successful withdrawal of invasive ventilatory support in adult patients.

BACKGROUND: Utilizing clinical tests, such as objective cough measurement, can assist in predicting the success of the weaning process in critically ill patients. METHODS: A multicenter observational analytical study was conducted within a prospective cohort of patients recruited to participate in COBRE-US. We assessed the capability of objective cough measurement to predict the success of the spontaneous breathing trial (SBT) and extubation. Intra- and inter-observer reproducibility of the cough test and was evaluated using the intraclass correlation coefficient (ICC) and Cohen's weighted kappa. We used receiver operating characteristic curves (ROC-curve) to evaluate the predictive ability of objective cough measurement. RESULTS: We recruited 367 subjects who were receiving invasive mechanical ventilation. A total of 451 objective cough measurements and 456 SBTs were conducted. A significant association was found between objective cough measurement and successful SBT (OR: 1.68; 95% CI 1.48-1.90; p = 0.001). The predictive capability of the objective cough test for SBT success had a ROC-curve of 0.58 (95% CI: 0.56-0.61). Objective cough measurement to predict successful extubation had a ROC-curve of 0.61 (95% CI: 0.56-0.66). The intraobserver reproducibility exhibited an ICC of 0.94 (95% CI: 0.89-0.96; p < 0.001), while the interobserver reproducibility demonstrated an ICC of 0.72 (95% CI: 0.51-0.85; p < 0.001). The intraobserver agreement, assessed using Cohen's weighted kappa was 0.94 (95% CI: 0.93-0.99; p < 0.001), whereas the interobserver agreement was 0.84 (95% CI: 0.67 - 0.10; p < 0.001). CONCLUSIONS: The objective measurement of cough using the method employed in our study demonstrates nearly perfect intra-observer reproducibility and agreement. However, its ability to predict success or failure in the weaning process is limited.

Factors associated with the readiness for oral intake in post-extubated critically ill adult patients: A prospective observational study.

BACKGROUND: Post-extubation dysphagia (PED) is a common post-extubation complication that may lead to serious problems, such as malnutrition and longer hospital and intensive care unit (ICU) stays. AIM: To explore factors associated with the readiness for oral intake in post-extubated critically ill adult patients. STUDY DESIGN: This prospective observational study involved 125 extubated patients. Readiness for oral intake was assessed using the Gugging Swallowing Screen (GUSS), and regression analysis was used to determine its predictors. RESULTS: The median age of the participants was 40.0 years, and 51.2% were female. The median GUSS score was 12.0 (possible range, 0-20), and 35.2% of the studied patients had severe dysphagia (scored 0-9). Bivariate regression analysis showed that older age, male, higher APACHE II score, body mass index (BMI) ≥30, smoking history, longer ICU stay, muscle relaxants use, large-bore endotracheal and orogastric tubes and frequent intubation attempts were associated with lower GUSS score (p-value <.05). Multivariate regression analysis showed that age, BMI and smoking history predicted 37.2% of the variability in the GUSS score (F = 23.865, p-value <.001). Adding the ICU length of stay, muscle relaxants use, size of the endotracheal tube, size of the orogastric tube and frequency of intubation attempts to the regression model raised the predictability to 86.0% (F = 88.809, p-value <.001). CONCLUSIONS: More than one-third of extubated patients have severe PED with a high risk of aspiration. Several modifiable factors, such as muscle relaxant use and endotracheal and orogastric tube size, predict post-extubation readiness for oral intake. RELEVANCE TO CLINICAL PRACTICE: Using endotracheal and orogastric tubes of appropriate sizes, careful assessment of patients with a high risk for difficult intubation, and minimal use of muscle relaxants may help increase patients' readiness for post-extubation oral intake.

Construction of an extubation protocol for adult tracheal intubation patients in the intensive care unit: A Delphi study.

OBJECTIVE: The objective of this study was to develop an extubation practice protocol for adult intensive care unit (ICU) patients who underwent endotracheal intubation, providing theoretical guidance for clinical extubation procedures in the ICU. METHODS: A research team was established consisting of medical, nursing, anaesthesia, and respiratory therapy professionals; the multidisciplinary team systematically searched domestic and foreign literature, summarised the best evidence, and combined it with clinical practice experience to preliminarily develop an extubation protocol for adult ICU patients who underwent endotracheal intubation. Seventeen experts in critical care medicine, intensive care nursing, clinical anaesthesia, and respiratory therapy were invited to participate in a Delphi expert consultation to screen and modify the draft protocol. RESULTS: The response rates of the two Delphi expert enquiries were 100% and 94.1%, with expert authority coefficients of 0.94 and 0.93, respectively, and Kendall's concordance coefficients were 0.152 and 0.198, respectively, indicating statistically significant differences (p < 0.001). The final protocol included three level I indicators, 14 level II indicators, and 34 level III indicators, covering extubation evaluation, implementation, and postextubation management. CONCLUSION: The extubation protocol for adult tracheal intubation patients in the ICU constructed in this study is scientific, practical, and reliable. This study can provide theoretical guidance for extubation in ICU patients who have undergone endotracheal intubation.

Post-extubation Assessment of Laryngeal Symptoms and Severity (PALSS) in the Intensive Care Unit: Protocol of a Prospective Cohort Study.

Aims: The Post-extubation Assessment of Laryngeal Symptoms and Severity (PALSS) study systematically evaluates patient symptoms related to endotracheal intubation with mechanical ventilation, assesses laryngeal injury and voice function after extubation, and develops a screening tool to identify patients with clinically important, post-extubation laryngeal injury. Design: Single-center, prospective observational cohort study conducted in 6 intensive care units (ICU). Methods: Patients ≥18 years old who are orally intubated and mechanically ventilated in an ICU and meet eligibility criteria will undergo flexible laryngoscopy, with a sample size goal of 300 completed laryngoscopies. Primary outcome measures include signs and symptoms of laryngeal injury, including voice symptoms and alterations in swallowing, measured using the Laryngeal Hypersensitivity Questionnaire-Acute and Voice Symptom Scale questionnaires respectively. Data will be collected within 72 hours post-extubation and at 7-day follow-up or hospital discharge (whichever occurs first). Data will be analyzed using descriptive statistics, regression models, and predictive modeling using machine learning. Discussion: The findings of this study will describe the clinical signs and symptoms of laryngeal injury post-extubation. Conclusion: The PALSS study will provide insights for future studies that explore laryngeal injuries using flexible laryngoscopy after endotracheal intubation. Implications for patient care: Identifying signs and symptoms of laryngeal injury after endotracheal intubation will facilitate the development of a screening tool that will assist in early identification of post-extubation laryngeal injury, and aid in decreasing short- and long-term complications of endotracheal intubation. Reporting Method: SPIRIT. Patient or Public Contribution: Patients were study participants; and family members provided informed consent when the patient lacked decision-making capacity.

Parasternal Intercostal Muscle Thickness Fraction (PICTF%): Ultrasound a New Tool for Weaning Prediction?

How to cite this article: Bhattacharya D, Esquinas AM, Mandal M. Parasternal Intercostal Muscle Thickness Fraction (PICTF%): Ultrasound a New Tool for Weaning Prediction? Indian J Crit Care Med 2024;28(4):404.

Independent predictors and clinical predictive score of postanesthetic reintubation after general anesthesia: A time-matched, case control study.

Background and Aims: Postanesthetic reintubation is associated with increased morbidities and mortality; however, it can be reduced with defined predictors and using a score as a tool. This study aimed to identify independent predictors and develop a reliable predictive score. Material and Methods: A retrospective, time-matched, case control study was conducted on patients who underwent general anesthesia between October 2017 and September 2021. Using stepwise multivariable logistic regression analysis, predictors were determined and the predictive score was developed and validated. Results: Among 230 patients, 46 were in the reintubated group. Significant independent predictors included age >65 years (odds ratio [OR] 2.96 [95% confidence interval {CI} 1.23, 7.10]), the American Society of Anesthesiologists physical status III-IV (OR 6.60 [95%CI 2.50 17.41]), body mass index (BMI) ≥30 kg/m2 (OR 4.91 [95% CI 1.55, 15.51]), and head and neck surgery (OR 4.35 [95% CI 1.46, 12.87]). The predictive model was then developed with an area under the receiver operating characteristic curve (AUC) of 0.84 (95% CI 0.78, 0.90). This score ranged from 0 to 29 and was classified into three subcategories for clinical practicability, in which the positive predictive values were 6.01 (95% CI 2.63, 11.50) for low risk, 18.64 (95% CI 9.69, 30.91) for moderate risk, and 71.05 (95% CI 54.09, 84.58) for high risk. Conclusion: The independent predictors for postanesthetic reintubation according to this simplified risk-based scoring system designed to aid anesthesiologists before extubation were found to be advanced age, higher American Society of Anesthesiologists physical status, obesity, and head and neck surgery.

Utilization of spontaneous breathing trial, objective cough test, and diaphragmatic ultrasound results to predict extubation success: COBRE-US trial.

BACKGROUND: The results of clinical and weaning readiness tests and the spontaneous breathing trial (SBT) are used to predict the success of the weaning process and extubation. METHODS: We evaluated the capacity of the cuff leak test, rate of rapid and shallow breathing, cough intensity, and diaphragmatic contraction velocity (DCV) to predict the success of the SBT and extubation in a prospective, multicenter observational study with consecutive adult patients admitted to four intensive care units. We used receiver operating characteristic (ROC) curves to assess the tests' predictive capacity and built predictive models using logistic regression. RESULTS: We recruited 367 subjects who were receiving invasive mechanical ventilation and on whom 456 SBTs were performed, with a success rate of 76.5%. To predict the success of the SBT, we derived the following equation: (0.56 × Cough) - (0.13 × DCV) + 0.25. When the cutoff point was ≥ 0.83, the sensitivity was 91.5%, the specificity was 22.1%, and the overall accuracy was 76.2%. The area under the ROC curve (AUC-ROC) was 0.63. To predict extubation success, we derived the following equation: (5.7 × SBT) + (0.75 × Cough) - (0.25 × DCV) - 4.5. When the cutoff point was ≥ 1.25, the sensitivity was 96.8%, the specificity was 78.4%, and the overall accuracy was 91.5%. The AUC-ROC of this model was 0.91. CONCLUSION: Objective measurement of cough and diaphragmatic contraction velocity could be used to predict SBT success. The equation for predicting successful extubation, which includes SBT, cough, and diaphragmatic contraction velocity values, showed excellent discriminative capacity.

Effectiveness of diaphragmatic ultrasound as a predictor of successful weaning from mechanical ventilation: a systematic review and meta-analysis.

BACKGROUND: Several measurements have been used to predict the success of weaning from mechanical ventilation; however, their efficacy varies in different studies. In recent years, diaphragmatic ultrasound has been used for this purpose. We conducted a systematic review and meta-analysis to evaluate the effectiveness of diaphragmatic ultrasound in predicting the success of weaning from mechanical ventilation. METHODS: Two investigators independently searched PUBMED, TRIP, EMBASE, COCHRANE, SCIENCE DIRECT, and LILACS for articles published between January 2016 and July 2022. The methodological quality of the studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies-2 tool; additionally, the certainty of the evidence is evaluated using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) methodology. Sensitivity and specificity analysis was performed for diaphragmatic excursion and diaphragmatic thickening fraction; positive and negative likelihood ratios and diagnostic odds ratios (DOR) with their confidence intervals (95% CI) were calculated by random effects analysis, summary receiver operating characteristic curve was estimated. Sources of heterogeneity were explored by subgroup analysis and bivariate meta-regression. RESULTS: Twenty-six studies were included, of which 19 were included in the meta-analysis (1204 patients). For diaphragmatic excursion, sensitivity was 0.80 (95% CI 0.77-0.83), specificity 0.80 (95% CI 0.75-0.84), area under the summary receiver operating characteristic curve 0.87 and DOR 17.1 (95% CI 10.2-28.6). For the thickening fraction, sensitivity was 0.85 (95% CI 0.82-0.87), specificity 0.75 (95% CI 0.69-0.80), area under the summary receiver operating characteristic curve 0.87 and DOR 17.2 (95% CI 9.16-32.3). There was heterogeneity among the included studies. When performing a subgroup analysis and excluding studies with atypical cutoff values, sensitivity and specificity increased for diaphragmatic thickening fraction; sensitivity increased and specificity decreased for diaphragmatic excursion; when comparing studies using pressure support (PS) versus T-tube, there was no significant difference in sensitivity and specificity; bivariate meta-regression analysis shows that patient position at the time of testing was a factor of heterogeneity in the included studies. CONCLUSIONS: Measurement of diaphragmatic excursion and diaphragmatic thickening fraction predict the probability of successful weaning from mechanical ventilation with satisfactory diagnostic accuracy; however, significant heterogeneity was evident in the different included studies. Studies of high methodological quality in specific subgroups of patients in intensive care units are needed to evaluate the role of diaphragmatic ultrasound as a predictor of weaning from mechanical ventilation.

Agitation is a Common Barrier to Recovery of ICU Patients.

Importance: Agitation is common in mechanically ventilated ICU patients, but little is known about physician attitudes regarding agitation in this setting. Objectives: To characterize physician attitudes regarding agitation in mechanically ventilated ICU patients. Design, Setting, and Participants: We surveyed critical care physicians within a multicenter health system in Western Pennsylvania, assessing attitudes regarding agitation during mechanical ventilation and use of and confidence in agitation management options. We used quantitative clinical vignettes to determine whether agitation influences confidence regarding readiness for extubation. We sent our survey to 332 critical care physicians, of whom 80 (24%) responded and 69 were eligible (had cared for a mechanically ventilated patient in the preceding three months). Main Outcomes and Measures: Respondent confidence in patient readiness for extubation (0-100%, continuous) and frequency of use and confidence in management options (1-5, Likert). Results: Of 69 eligible responders, 61 (88%) agreed agitation is common and 49 (71%) agreed agitation is a barrier to extubation, but only 27 (39%) agreed their approach to agitation is evidence-based. Attitudes regarding agitation did not differ much by practice setting or physician demographics, though respondents working in medical ICUs were more likely (P = .04) and respondents trained in surgery or emergency medicine were less likely (P = .03) than others to indicate that agitation is an extubation barrier. Fifty-three (77%) respondents reported they frequently use non-pharmacologic measures to treat agitation, and 42 (70%) of those who reported they used non-pharmacologic measures during the prior 3 months indicated confidence in their effectiveness. In responses to clinical vignettes, confidence in patient's readiness for extubation was significantly lower if the patient was agitated (P < .001) or tachypneic (P < .001), but the presence of both agitation and tachypnea did not reduce confidence compared with tachypnea alone (P = .24). Conclusions and Relevance: Most critical care physicians consider agitation during mechanical ventilation a common problem and agreed that agitation is a barrier to extubation. Treatment practice varies widely.

Early extubation in extracorporeal life support patients: A propensity score-matched study.

BACKGROUND: Extubation strategy in extracorporeal life support patients remains unclear, and literature only reports studies with significant biases. OBJECTIVES: To explore the prognostic impact of an early ventilator-weaning strategy in assisted patients after controlling for confounding factors. METHODS: A 10-year retrospective study included 241 patients receiving extracorporeal life support for at least 48 h, corresponding to a total of 977 days spent on assistance. The a priori probability of extubation for each day of assistance was calculated according to daily biological examinations, drug doses, clinical observations, and admission data to pair each day containing an extubation with one on which the patient was not extubated. The primary outcome was survival at day 28. The secondary outcomes were survival at day 7, respiratory infections, and safety criteria. RESULTS: Two similar cohorts of 61 patients were generated. Survival at day 28 was better in patients extubated under assistance in univariate and multivariate (HR = 0.37 [0.2-0.68], p-value = 0.002) analyses. Patients who underwent failed early extubation did not have a different prognosis from those without early extubation. Successful early extubation was associated with a better outcome than a failed or no attempt at early extubation. Survival at day 7 and the rate of respiratory infections were better in early-extubated patients. Safety data did not differ between the two groups. CONCLUSIONS: Early extubation during assistance was associated with a superior outcome in our propensity-matched cohort study. The safety data were reassuring. However, due to the lack of prospective randomized studies, the causality remains uncertain.

Liberation from Invasive Mechanical Ventilation with Continued Receipt of Vasopressor Infusions.

Rationale: Weaning protocols for discontinuation of invasive mechanical ventilation often mandate resolution of shock. Whether extubation while receiving vasopressors is associated with harm is uncertain. Objectives: To examine whether extubation while still receiving vasopressors is associated with worse outcomes. Methods: We performed a retrospective cohort study of adults in Calgary ICUs who received vasopressors with invasive mechanical ventilation and an extubation attempt. The primary exposure was continued vasopressor use at extubation. The primary outcome was reintubation within 96 hours. Secondary outcomes included in-hospital mortality and ICU/hospital length of stay (LOS). We assessed associations of vasopressor use at extubation with outcomes using multivariable competing-risk (reintubation/LOS) and Cox proportional-hazards (mortality) models. Measurements and Main Results: Of 6,140 patients who received invasive mechanical ventilation while on vasopressors, 721 (11.7%) were extubated while receiving vasopressors, and 5,419 (88.3%) after discontinuation. Extubation on vasopressors was not, in aggregate, significantly associated with an increased hazard of reintubation (subhazard ratio [SHR], 1.81 [95% confidence interval, 0.91-3.61]; P = 0.09). Both mortality (hazard ratio, 1.22 [1.02-1.47]; P = 0.03) and time to hospital discharge (SHR for remaining hospitalized, 0.78 [0.68-0.91]; P < 0.01) were increased. Extubation on high-dose vasopressors (>0.1 µg/kg/min) was associated with a greater hazard of reintubation (SHR, 2.25 [1.01-4.98]; P = 0.046) compared with extubation after vasopressor discontinuation. Meanwhile, extubation on low-dose vasopressors (⩽0.1 µg/kg/min) was associated with a lower mortality (hazard ratio, 0.69 [0.51-0.91]; P = 0.01) and a shorter ICU LOS (SHR, 1.34 [1.09-1.65]; P = 0.01), but no difference in reintubation or hospital LOS as compared with those weaned off vasopressors. Conclusions: Extubation while receiving high-dose but not low-dose vasopressors was associated with an increased risk of reintubation.

Beneficial Effects of Noninvasive Ventilation after Extubation in Obese or Overweight Patients: A Post Hoc Analysis of a Randomized Clinical Trial.

Rationale: Although noninvasive ventilation (NIV) may prevent reintubation in patients at high risk of extubation failure in ICUs, this oxygenation strategy has not been specifically assessed in obese patients. Objectives: We hypothesized that NIV may decrease the risk of reintubation in obese patients compared with high-flow nasal oxygen. Methods:Post hoc analysis of a multicenter randomized controlled trial (not prespecified) comparing NIV alternating with high-flow nasal oxygen versus high-flow nasal oxygen alone after extubation, with the aim of assessing NIV effects according to patient body mass index (BMI). Measurements and Main Results: Among 623 patients at high risk of extubation failure, 206 (33%) were obese (BMI ⩾ 30 kg/m2), 204 (33%) were overweight (25 kg/m2 ⩽ BMI < 30 kg/m2), and 213 (34%) were normal or underweight (BMI < 25 kg/m2). Significant heterogeneity of NIV effects on the rate of reintubation was found according to BMI (Pinteraction = 0.007). Reintubation rates at Day 7 were significantly lower with NIV alternating with high-flow nasal oxygen than with high-flow nasal oxygen alone in obese or overweight patients: 7% (15/204) versus 20% (41/206) (difference, -13% [95% confidence interval, -19 to -6]; P = 0.0002), whereas it did not significantly differ in normal or underweight patients. In-ICU mortality was significantly lower with NIV than with high-flow nasal oxygen alone in obese or overweight patients (2% vs. 9%; difference, -6% [95% confidence interval, -11 to -2]; P = 0.006). Conclusions: Prophylactic NIV alternating with high-flow nasal oxygen immediately after extubation significantly decreased the risk of reintubation and death compared with high-flow nasal oxygen alone in obese or overweight patients at high risk of extubation failure. By contrast, NIV was not effective in normal or underweight patients. Clinical trial registered with www.clinicaltrials.gov (NCT03121482).

Factors associated with immediate and early extubation in pediatric living-donor liver transplant recipients.

BACKGROUND: The practice of prompt extubation after adult liver transplantation has increasingly been applied in the pediatric population. Therefore, the factors contributing to this intervention should be identified in order to minimize failures. AIMS: We sought to determine the factors associated with immediate and early extubation in pediatric living-donor liver transplant recipients. METHODS: The medical records of pediatric liver transplant recipients at our center from January 2013 to December 2021, a 9-year period, were retrospectively collected and divided into early or delayed extubation groups. Factors associated with early extubation were determined using univariate and multivariate analyses, as the primary outcome. Comparisons of the postoperative management and outcomes between groups were evaluated as secondary outcomes. RESULTS: Seventy-nine patients were included in the analysis, of whom 19 (24%) were immediately extubated in the operating room while 12 patients (15%) were extubated early, within 24 h postoperatively. These 31 patients (39%) were assigned to the early extubation group, whereas the others were assigned to the delayed extubation group. Shorter anhepatic time was the only factor associated with early extubation (adjusted odds ratio = 0.52; 95% confidence interval: 0.30, 0.89 per 30-min increment; p-value = .018) in patients with the same characteristics, including diagnosis, total operative time, and intraoperative volume of albumin and packed red blood cells. The length of intensive care unit stay was shorter in the early extubation group than in the delayed extubation group (p = .001). The rates of total and early medical complications and total reintubation in 30 days were significantly higher in the delayed extubation group than in the early extubation group (p-value = .002, .044, and .006 respectively). There were no significant differences in the length of hospital stay between the groups. CONCLUSION: Our findings indicated that 39% of the pediatric living donor-liver transplantation patients tolerated early extubation and that the only associated factor was anhepatic time. Early extubation significantly reduces the number of days of intensive care unit stay but may not change the length of hospital stay.

Risk factors and outcomes associated with unplanned intraoperative extubation of the pediatric surgical patient: An analysis of the NSQIP-P database.

BACKGROUND: Unplanned intraoperative extubation is a rare but potentially catastrophic safety event. Inadvertent extubation in the neonatal and pediatric critical care setting is a recognized quality improvement metric whereas literature for intraoperative extubation is scarce. The aim of this study was to identify risk factors and outcomes associated with unplanned intraoperative extubation. METHODS: We queried the National Surgical Quality Improvement Program-Pediatric database from 2019 to 2020 for patients <18 years of age. A total of 253 673 patients were included in the analysis. Associations between demographics, clinical variables, and unplanned intraoperative extubation were evaluated with univariable and multivariable logistic regression models. The primary outcome was unplanned intraoperative extubation. Secondary outcomes were postoperative pulmonary complication, unplanned reintubation within 24 h, cardiac arrest on day of surgery, and surgical site infection. RESULTS: Unplanned intraoperative extubation occurred in 163 (0.06%) patients. Specific procedures experienced unplanned intraoperative extubation at a higher rate such as bilateral cleft lip repair (1.31% of procedure type) and thoracic repair of tracheoesophageal fistula (1.11% of procedure type). Age, operative time (z-score), American Society of Anesthesiologists Classification 3 and 4, neurosurgery, plastic surgery, thoracic surgery, otolaryngology, and structural pulmonary/airway abnormalities were independent risk factors. Unplanned intraoperative extubation was associated with an increased unadjusted risk for postoperative pulmonary complication (p < .005; OR, 6.05; 95% confidence interval [CI]: 1.93-14.44), unplanned reintubation within 24 h (p < .005; OR, 8.41; 95% CI: 2.08-34.03), cardiac arrest on day of surgery (p < .05; OR, 22.67; 95% CI: 0.56-132.35), and surgical site infection (p < .0005; OR, 3.27; 95% CI 1.74-5.67). CONCLUSIONS: Unplanned intraoperative extubation occurs at a higher frequency in a subset of procedures and patient types. Identifying and targeting at-risk patients with preventative measures may decrease the incidence of unplanned intraoperative extubation and its associated outcomes.

Clinical Scoring and Ultrasound-Based Diaphragm Assessment in Predicting Extubation Failure in Neurointensive Care Unit: A Single-Center Observational Study.

BACKGROUND: Patients in the neurointensive care unit (NICU) fail extubation despite successful weaning from mechanical ventilation. Parameters currently used in the general intensive care unit do not accurately predict extubation success in the NICU. In this study, peak cough expiratory flow rate, ultrasound-based diaphragm function assessment, and comprehensive clinical scoring systems were measured to determine whether these new variables, in isolation or combination, could predict extubation failure successfully in the NICU. METHODS: All adult patients extubated after 48 h of mechanical ventilation in the NICU of a single tertiary care center were recruited into the prospective cohort. The patient's cough peak expiratory flow rate (C-PEFR), diaphragm function, and clinical scores were measured before extubation. C-PEFR was measured using a hand-held spirometer, diaphragm function (excursion, thickness fraction, and diaphragm contraction velocity on coughing) was assessed using ultrasound, and the clinical scores included the visual pursuit, swallowing, age, Glasgow Coma Scale for extubation (VISAGE) and respiratory insufficiency scale-intubated (RIS-i) scores. The patients requiring reintubation within 48 h were considered as extubation failure. Univariate and multivariate logistic regression analyses were done to identify predictors of extubation failure. RESULTS: Of the 193 patients screened, 43 were recruited, and 15 had extubation failure (20.9%). Patients with extubation failure had higher RIS-i scores (p < 0.001) and lower VISAGE scores (p = 0.043). The C-PEFR and diaphragm function (excursions and contraction velocity on coughing) were lower in patients with extubation failure but not statistically significant. The variables with p < 0.2 in univariate analysis (RIS-i, VISAGE, and diaphragm cough velocity) were subjected to multivariate regression analysis. RIS-I score remained an independent predictor (odds ratio 3.691, 95% confidence interval 1.5-8.67, p = 0.004). In a receiver operating characteristic analysis, the area under the curve for RIS-i was 0.963. An RIS-i score of 2 or more had 94% specificity and 89% sensitivity for predicting extubation failure. CONCLUSIONS: The RIS-i score predicts extubation failure in NICU patients. The addition of ultrasound-based diaphragm measurements to the RIS-i score to improve prediction accuracy needs further study. Clinical trial registration Clinical Trials Registry of India identifier CTRI/2021/03/031923.

Quantification of respiratory sounds by a continuous monitoring system can be used to predict complications after extubation: a pilot study.

To show that quantification of abnormal respiratory sounds by our developed device is useful for predicting respiratory failure and airway problems after extubation. A respiratory sound monitoring system was used to collect respiratory sounds in patients undergoing extubation. The recorded respiratory sounds were subsequently analyzed. We defined the composite poor outcome as requiring any of following medical interventions within 48 h as defined below. This composite outcome includes reintubation, surgical airway management, insertion of airway devices, unscheduled use of noninvasive ventilation or high-flow nasal cannula, unscheduled use of inhaled medications, suctioning of sputum by bronchoscopy and unscheduled imaging studies. The quantitative values (QV) for each abnormal respiratory sound and inspiratory sound volume were compared between composite outcome groups and non-outcome groups. Fifty-seven patients were included in this study. The composite outcome occurred in 18 patients. For neck sounds, the QVs of stridor and rhonchi were significantly higher in the outcome group vs the non-outcome group. For anterior thoracic sounds, the QVs of wheezes, rhonchi, and coarse crackles were significantly higher in the outcome group vs the non-outcome group. For bilateral lateral thoracic sounds, the QV of fine crackles was significantly higher in the outcome group vs the non-outcome group. Cervical inspiratory sounds volume (average of five breaths) immediately after extubation was significantly louder in the outcome group vs non-outcome group (63.3 dB vs 54.3 dB, respectively; p < 0.001). Quantification of abnormal respiratory sounds and respiratory volume may predict respiratory failure and airway problems after extubation.

Predictors of extubation failure in neurocritical patients: A systematic review.

OBJECTIVE: The objective of this study was to identify predictors of extubation failure in neurocritical patients. METHODS: This was systematic review performed through a bibliographic search of the databases PubMed/Medline, Lilacs, SciELO, and Web of Science, from February 2020 to October 2021. Cohort studies that investigated the predictors of extubation failure were included, defined as the need for reintubation within 48 h after extubation, in adult neurocritical patients. The risk-of-bias assessment was performed using the Newcastle-Ottawa Scale, for cohort studies. RESULTS: Eight studies, totaling 18 487 participants, were included. A total of 15 predictors for extubation failure in neurocritical patients have been identified. Of these, four were the most frequent: low score on the Glasgow Coma Scale (motor score ≤5, 8T-10T), female gender, time on mechanical ventilation (≥7 days, ≥ 10 days), and moderate or large secretion volume. CONCLUSIONS: In addition to the conventional parameters of weaning and extubation, other factors, such as a low score on the Glasgow Coma Scale, female gender, mechanical ventilation time, and moderate or large secretion volume, must be taken into account to prevent extubation failure in neurocritical patients in clinical practice.