Incidence and Factors Associated with Delirium in Children in a Single Pediatric Intensive Care Unit in Brazil

Impact of Prolonged Continuous Ketamine Infusions in Critically Ill Children: A Prospective Cohort Study

BACKGROUND

Ketamine has been considered as an adjunct for children who do not reach their predefined target sedation depth. However, there is limited evidence regarding the use of ketamine as a prolonged infusion (i.e., >24 hours) in the pediatric intensive care unit (PICU).

OBJECTIVE

We sought to evaluate the safety and effectiveness of continuous ketamine infusion for >24 hours in mechanically ventilated children.

METHODS

We conducted a prospective cohort study in a tertiary PICU from January 2020 to December 2022. The primary outcome was the incidence of adverse events (AEs) after ketamine initiation. The secondary outcome included assessing the median proportion of time the patient spent on the Richmond Agitation-Sedation Scale (RASS) goal after ketamine infusion. Patients were also divided into two groups based on the sedative regimen, ketamine-based or non-ketamine-based, to assess the incidence of delirium.

RESULTS

A total of 269 patients were enrolled: 73 in the ketamine group and 196 in the non-ketamine group. The median infusion rate of ketamine was 1.4 mg/kg/h. Delirium occurred in 16 (22%) patients with ketamine and 15 (7.6%) patients without ketamine (p = 0.006). After adjusting for covariates, logistic regression showed that delirium was associated with comorbidities (odds ratio [OR] 4.2), neurodevelopmental delay (OR 0.23), fentanyl use (OR 7.35), and ketamine use (OR 4.17). Thirty-one (42%) of the patients experienced at least one AE following ketamine infusion. Other AEs likely related to ketamine were hypertension (n = 4), hypersecretion (n = 14), tachycardia (n = 6), and nystagmus (n = 2). There were no significant changes in hemodynamic variables 24 h after the initiation of ketamine. Regarding the secondary outcomes, patients were at their goal RASS level for a median of 76% (range 68-80.5%) of the time in the 24 hours before ketamine initiation, compared with 84% (range 74.5-90%) of the time during the 24 h after ketamine initiation (p < 0.001). The infusion rate of ketamine did not significantly affect concomitant analgesic and sedative infusions. The ketamine group experienced a longer duration of mechanical ventilation and a longer length of stay in the PICU and hospital than the non-ketamine group.

CONCLUSION

The use of ketamine infusion in PICU patients may be associated with an increased rate of adverse events, especially delirium. High-quality studies are needed before ketamine can be broadly recommended or adopted earlier in the sedation protocol.

Recognition and Management of Delirium in the Neonatal Intensive Care Unit: Case Series From a Single-Center Level IV Intensive Care Unit

Delirium often goes unrecognized in neonates and children because of lack of experience in evaluating behavior and cognition, insufficient awareness of the prevalence, and nondistinctive symptoms in this population. Although there are increasing reports of the presence of delirium in neonates, there are little data to guide the pharmacologic treatment in this population. In this retrospective single-center case series, we present our experience using quetiapine to treat delirium in 9 medically complex neonates. Based on an extensive literature review, expert opinion, and institutional experience, we propose an approach for monitoring and treating delirium in neonates and infants.

Prospective validation of Sophia observation withdrawal symptoms: A paediatric delirium scale in critically ill children in Denmark

BACKGROUND

Paediatric delirium (PD) is increasingly recognised as a common disorder in critically ill children with a reported prevalence ranging from 9% to 66%. We validated the PD component of the Sophia Observation withdrawal Symptoms-Paediatric Delirium (SOS-PD) scale in a Danish setting to provide increased awareness and reliable identification of this critical condition, thereby paving the way for improved pathways to targeted delirium care.

OBJECTIVE

The objectives of this study were to criterion validate the PD component of the SOS-PD screening tool by comparing blinded psychiatric and nurse assessments and to estimate the prevalence of delirium in critically ill children in a Danish context.

METHODS

A prospective observational study was performed on critically ill children aged between 3 m and 18 y, admitted to an intensive care unit, with a hospital stay of 48 h or more. Assessments took place on a fixed weekday over an 18-month period. To test accuracy and criterion validity, bedside nurses' SOS-PD assessments were compared to the reference standard, a diagnostic assessment performed by a child psychiatrist according to the Diagnostic and Statistical Manual-V criteria by use of the Vanderbilt Assessment of Delirium in Infants and Children.

RESULTS

We included 141 children in the study, 30 (21%) of whom were diagnosed with delirium by the child psychiatrist. The accuracy of the delirium diagnosis was 93.6% (95% confidence interval [CI]: 88.3-97.1) among the nurses' SOS-PD assessments compared to the reference standard. The SOS-PD demonstrated a high sensitivity of 83.3% (95% CI: 65.3-94.4) and a high specificity of 96.4% (95% CI: 91.0-99.0) with five false-negative and four false-positive cases.

CONCLUSION

The PD component of the SOS-PD tool has good accuracy and validity for assessments performed by nurses compared to a child psychiatrist's diagnosis in critically ill children in a Danish setting. We recommend the use of the SOS-PD instrument in clinical practice.

Predictors of postoperative delirium in paediatric patients undergoing surgery under general anaesthesia at Amhara Regional State Tertiary Hospitals: a multicenter prospective study

Introduction

Postoperative delirium in paediatric patients is a recognised issue. Nevertheless, in low- and middle-income nations, researchers have had luck in determining its extent and predictors. Identifying predictors of postoperative delirium in paediatric patients having general anaesthesia at Tertiary Hospitals in Ethiopia was the aim of this study.

Methods

A multicenter, prospective follow up study was conducted from April 15 to June 15, 2023 at the study settings. During the study period a total of 424 paediatric surgical patients treated under general anaesthesia in all study locations, ranging in age from birth to sixteen were candidates for this study. Charts and direct observation of patient's with assessment tool [Cornell Assessment of Pediatric Delirium (CAPD)] were used from each available patient. Binary logistic regression analysis was performed to determine predictors of postoperative delirium in paediatric patients undergoing surgery under general anaesthesia.

Results

Postoperative delirium occurred in 160 of the 404 paediatric patients who underwent surgery under general anaesthesia. Ophthalmic surgery, corticosteroid use, anticholinergic use, severe postoperative pain, and preoperative anxiety were found to be predictors of postoperative delirium; whereas, sedative medication premedication and paracetamol used for analgesia were found to be protective against postoperative delirium.

Inference and recommendation

The postoperative delirium in paediatric patients undergoing surgery under general anaesthesia was higher compared to developed countries. Ophthalmic surgery, corticosteroids, anticholinergic medications, postoperative pain, and preoperative anxiety were found to be predictors. The impact of postoperative delirium might be lessened by concentrating on its screening and factor control.

Effect of an educational program on pediatric nurses' knowledge, practice, and self-confidence about level of consciousness scales

BACKGROUND

Nurses of pediatric acute critical care units routinely assess the Level of Consciousness (LOC). The precise, exact, and restriction-free evaluation tool aids pediatric nurses in LOC assessment and clinical decision-making. This study aimed to examine the effect of an educational program on pediatric nurses' knowledge, practice, and self-confidence about level of consciousness scales.

METHODS

This pretest-post, single-group, quasi-experimental, double-site study included 49 pediatric nurses. The Glasgow Coma Scale (GCS)/Pediatric Glasgow Coma Scale (PGCS) and Pediatric Full Outline of UnResponsiveness Score Scale (PFSS) knowledge questionnaire and pediatric nurse practice checklist were developed and adopted. Self-reflection confidence statements were rated 1-5 (not confident-confident).

RESULTS

The results of the study indicate that there were significant increases in knowledge, practice, and self-confidence after the intervention. The paired samples tests revealed that knowledge scores significantly increased from the pretest to the posttest for both GCS/PGCS (pretest mean:7.91, posttest mean:9.95) and PFSS (pretest mean:2.1, posttest mean:6.79). Practice scores also showed significant improvement for both GCS/PGCS (pretest mean: 4.12, post-test mean: 6.22) and PFSS (pretest mean: 2.46, post-test mean: 5.79). Furthermore, self-confidence significantly improved for GCS/PGCS (pretest mean:16.08, posttest mean:18.79) and PFSS (pretest mean:10.32, posttest mean:17.81). The statistical analyses supported the significance of these improvements (p < 0.001 for all except self-confidence in GCS/PGCS with p < 0.005).

CONCLUSION

The educational program improved pediatric nurses' GCS/PGCS and PFSS knowledge, practice, and self-confidence.

IMPLICATIONS TO PRACTICE

Effective teaching of pediatric nurses is required to address gaps in care practices and improve the use of the Consciousness Level Assessment Scales.

Non-pharmacological interventions to prevent and manage delirium in critically ill children in neonatal and paediatric intensive care units (NICU/PICU): a scoping review protocol

INTRODUCTION

Delirium is one of the most common forms of acute cerebral dysfunction in critically ill children leading to increased morbidity and mortality. Prevention, identification and management of delirium is an important part of paediatric and neonatological intensive care. This scoping review aims to identify and map evidence on non-pharmacological interventions for paediatric delirium prevention and management in paediatric and neonatal intensive care settings.

METHODS AND ANALYSIS

This scoping review will be conducted according to the Joanna Briggs Institute methodology for scoping reviews and reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. Searches will be performed in the databases Medline (via PubMed), CINAHL, Cochrane Library, Ovid (Journals), EMBASE and Web of Science (01/2000-current). Two reviewers will independently review retrieved studies, and relevant information will be extracted using data extraction forms. The results will be presented in tabular format and accompanied by a narrative summary.

INCLUSION CRITERIA

The review will include references that describe or evaluate non-pharmacological interventions to prevent or manage paediatric delirium. Conference abstracts, editorials, opinion papers and grey literature will be excluded.

ETHICS AND DISSEMINATION

Due to the nature of research involving humans or unpublished secondary data, approval of an ethics committee are not required. The dissemination of findings is planned via professional networks and publication in an open-access scientific journal.

Factors Associated With Delirium in Children: A Systematic Review and Meta-Analysis

OBJECTIVES

Pediatric delirium (PD) is a neuropsychiatric syndrome caused by a complex interplay between predisposing factors (e.g., age, cognitive impairment), acute illness, and environmental triggers. PD is associated with substantial morbidity and mortality. The objective of this study is to systematically review and evaluate factors associated with PD in hospitalized pediatric patients.

DATA SOURCES

A systematic search of PubMed, Embase, Ovid Medline, Web- of-Science, Cochrane, CIHNAL, and Google Scholar databases was conducted for relevant studies (1990-2022).

STUDY SELECTION

We included studies that compared pediatric patients with and without delirium. Reviews, editorials, congress abstracts, or studies that did not report factors for PD were excluded. No restrictions were imposed on language.

DATA EXTRACTION

Title and abstract were independently screened by two reviewers. Individual characteristics, study design, and outcomes were independently extracted.

DATA SYNTHESIS

Categorical dichotomous data were summarized across groups using Mantel-Haenszel odds ratios (ORs) with 95% 95% CIs. Either fixed-effect or random effects models were used as indicated by the results of a heterogeneity test. Of 1,846 abstracts, 24 studies were included. We identified 54 factors studied in univariate analyses, and 27 of these were associated with PD in multivariable analyses. In pooled analyses, greater odds of PD were associated with developmental delay (OR 3.98; 95% CI 1.54-10.26), need for mechanical ventilation (OR 6.02; 95% CI 4.43-8.19), use of physical restraints (OR 4.67; 95% CI 1.82-11.96), and receipt of either benzodiazepines (OR 4.10; 95% CI 2.48-6.80), opiates (OR 2.88; 95% CI 1.89-4.37), steroids (OR 2.02; 95% CI 1.47-2.77), or vasoactive medication (OR 3.68; 95% CI 1.17-11.60).

CONCLUSIONS

In this meta-analysis, we identified seven factors associated with greater odds of developing delirium during pediatric critical illness.

Implementation of a Delirium Bundle for Pediatric Intensive Care Patients

BACKGROUND AND OBJECTIVE

Delirium represents the most common form of acute cerebral dysfunction in critical illness. The prevention, recognition, and treatment of delirium must become the focus of modern pediatric intensive care, as delirium can lead to increased morbidity and mortality. The aim of this study is to evaluate the impact of a delirium bundle consisting of mainly non-pharmacological measures.

MATERIAL AND METHODS

This is a pre-/post-implementation study in an interdisciplinary pediatric intensive care unit of a tertiary care university hospital. In the pre-implementation period, pediatric intensive care delirium was monitored using the Sophia Observation withdrawal Symptoms and Pediatric Delirium scale. After introduction of a delirium bundle consisting of non-pharmacological prevention and treatment measures a period of 4 months was interposed to train the PICU staff and ensure that the delirium bundle was implemented consistently before evaluating the effects in the post-implementation period. Data collection included prevalence of delirium and withdrawal, length of PICU stay, duration of mechanical ventilation, and cumulative dose of sedatives and analgesics.

RESULTS

A total of 792 critically ill children aged 0-18 years were included in this study. An overall delirium prevalence of 30% was recorded in the pre-implementation group and 26% in the post-implementation group (p = 0.13). A significant reduction in the prevalence of pediatric delirium from was achieved in the subgroup of patients under 5 years of age (27.9 vs. 35.8%, p = 0.04) and in patients after surgery for congenital heart disease (28.2 vs. 39.5%, p = 0.04). Young age, length of PICU stay, and iatrogenic withdrawal syndrome were found to be risk factors for developing delirium.

CONCLUSIONS

Based on a validated delirium monitoring, our study gives new information regarding the prevalence of pediatric delirium and the characteristics of intensive care patients at risk for this significant complication. Especially young patients and patients after surgery for congenital heart disease seem to benefit from the implementation of non-pharmacological delirium bundles. Based on our findings, it is important to promote change in pediatric intensive care-toward a comprehensive approach to prevent delirium in critically ill children as best as possible.