The Association Between Functional Status and Health-Related Quality of Life Following Discharge from the Pediatric Intensive Care Unit

Humanisation in paediatric intensive care units: A narrative review

OBJECTIVE

To identify findings in the scientific literature relevant to the strategic lines proposed by the Humanising Intensive Care Project in the context of paediatric intensive care units.

DESIGN

Narrative review.

METHODS

A literature search was conducted in the databases PubMed, Scopus, CINHAL, and Cochrane Library. Specific indexing terms and search strategies adapted to each database were designed. The inclusion of publications was based on two criteria: 1) related to the paediatric intensive care unit and 2) addresses at least one of the topics related to the strategic lines of the Humanising Intensive Care Project. Study selection was carried out following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and the quality of the included studies was assessed using the Mixed Method Appraisal tool.

RESULTS

A total of 100 articles from 19 different countries were included, covering the period between 2019 and 2021. Nineteen different design types were identified. Thirty-two studies were cross-sectional observational studies, while 15 had an experimental approach. The articles were distributed among the seven strategic lines of the Humanising Intensive Care Project.

CONCLUSIONS

Synthesising the knowledge related to humanisation in paediatric intensive care units will allow progress to be made in improving quality in these units. However, there is disparity in the amount of experimental research overall.

IMPLICATIONS FOR CLINICAL PRACTICE

There is a disparity in the available research related to the different strategic lines, and it is necessary to carry out more exhaustive research on topics such as the presence and participation of the family in care or the management of post-paediatric intensive care syndrome.

Exposure to Sedation and Analgesia Medications: Short-term Cognitive Outcomes in Pediatric Critical Care Survivors With Acquired Brain Injury

Background/Objective: Pediatric intensive care unit (PICU) survivors risk significant cognitive morbidity, particularly those with acquired brain injury (ABI) diagnoses. Studies show sedative and analgesic medication may potentiate neurologic injury, but few studies evaluate impact on survivor outcomes. This study aimed to evaluate whether exposures to analgesic and sedative medications are associated with worse neurocognitive outcome. Methods: A retrospective cohort study was conducted of 91 patients aged 8 to 18 years, undergoing clinical neurocognitive evaluation approximately 1 to 3 months after PICU discharge. Electronic health data was queried for sedative and analgesic medication exposures, including opioids, benzodiazepines, propofol, ketamine, and dexmedetomidine. Doses were converted to class equivalents, evaluated by any exposure and cumulative dose exposure per patient weight. Cognitive outcome was derived from 8 objective cognitive assessments with an emphasis on executive function skills using Principal Components Analysis. Then, linear regression was used to control for baseline cognitive function estimates to calculate a standardized residualized neurocognitive index (rNCI) z-score. Multivariable linear regression evaluated the association between rNCI and medication exposure controlling for covariates. Significance was defined as P < .05. Results: Most (n = 80; 88%) patients received 1 or more study medications. Any exposure and higher cumulative doses of benzodiazepine and ketamine were significantly associated with worse rNCI in bivariate analyses. When controlling for Medicaid, preadmission comorbid conditions, length of stay, delirium, and receipt of other medication classes, receipt of benzodiazepine was associated with significantly worse rNCI (β-coefficient = -0.48, 95% confidence interval = -0.88, -0.08). Conclusions: Exposure to benzodiazepines was independently associated with worse acute phase cognitive outcome using objective assessments focused on executive function skills when controlling for demographic and illness characteristics. Clinician decisions regarding medication regimens in the PICU may serve as a modifiable factor to improve outcomes. Additional inquiry into associations with long-term cognitive outcome and optimal medication regimens is needed.

Post-PICU sleep efficiency and quality of life in infants and toddlers with acquired brain injury

STUDY OBJECTIVES

We aimed to investigate the use of sleep efficiency (SE) as a measure of sleep disturbance in infants and toddlers with acquired brain injury (ABI) and evaluate associations between SE and child health-related quality of life and family outcomes.

METHODS

Retrospective cohort study of 101 children ages 3-36 months who survived critical care for ABI. SE was quantified from the Brief Infant Sleep Questionnaire as a ratio of nighttime sleep to total time in bed; poor SE was defined as < 80%. Outcome measures included the Pediatric Quality of Life Inventory Core Total Score (health-related quality of life) and Family Impact Module Total Score. Spearman's correlation quantified associations between SE and outcomes. Multivariable linear regression tested association between poor SE and health-related quality of life controlling for significant covariates (age, diagnosis, comorbidities, worsening Functional Status Scale).

RESULTS

Following ABI, median SE was 91.7 (interquartile range = 83.3, 95.5). Nineteen (19%) children had poor SE (< 80%). SE correlated significantly with quality of life (Spearman's correlation = .307) and Family Impact Module (Spearman's correlation = .309; both P < .01). When controlling for covariates, poor SE significantly increased risk for lower health-related quality of life (β-coefficient = -7.0; 95% confidence interval= -13.4, -0.6).

CONCLUSIONS

One in five infants and young children with ABI have poor SE that is associated with poorer child and family health outcomes. Our study underscores the potential importance of sleep following ABI to optimize recovery and the need for additional investigation of SE in infants and young children.

CITATION

Klapp JM, Hall TA, Riley AR, Janzen D, Williams CN. Post-PICU sleep efficiency and quality of life in infants and toddlers with acquired brain injury. J Clin Sleep Med. 2024;20(1):75-83.

Early-Onset Ventilator-Associated Pneumonia in Pediatric Severe Traumatic Brain Injury

BACKGROUND

Early-onset ventilator-associated pneumonia (VAP) is associated with poor outcomes in patients with severe traumatic brain injury (TBI). The primary aim of this study was to describe VAP, including the microbiology of VAP and differences in frequency of VAP when various definitions are applied. The secondary aim was to determine the clinical variables associated with the development of VAP in children with severe TBI.

METHODS

This is a retrospective cohort study at a quaternary referral children's hospital with a level I trauma center designation. Inclusion criteria were patients aged 0-18 years admitted to the pediatric intensive care unit between 2015 and 2020 with severe TBI requiring at least 2 days of invasive ventilation. VAP was defined by using Center of Disease Control (CDC) definition or clinical VAP, based on physician diagnosis. We compared general demographics, reviewed trauma and injury data, and outcomes to assess any differences between patients with VAP and non-VAP patients. Associations were tested with regression models.

RESULTS

After applying all inclusion and exclusion criteria, 90 patients were included in the analysis. Patients with VAP were older (8.5 vs. 5.6 years, P = 0.03). Patients with VAP were less likely to have suffered from abusive head trauma (P = 0.01). Patients who received continuous neuromuscular blockade or targeted temperature management did not have different frequencies of VAP. CDC-defined VAP was diagnosed in 27% of patients. Number of patients with VAP increased to 41% for physician-diagnosed or clinical VAP. Methicillin-sensitive Staphylococcus aureus was the most common isolate grown, followed by Hemophilus influenza, with most VAP occurring on days 2-5 of intubation. VAP was not associated with mortality but was associated with worse functional status scale in patients who survived to discharge (8 vs. 7.5, P = 0.048). Over a cumulative period of days, nebulized 3% and albuterol were associated with decreased incidence of VAP.

CONCLUSIONS

Ventilator-associated pneumonia occurs commonly in children with severe TBI, with rates of 27-41%, depending on CDC-defined VAP or clinical VAP. The discrepancy between clinical VAP and CDC-defined VAP further illustrates the need for a standardized definition for VAP. Although most interventions were not associated with VAP, nebulized 3% saline and albuterol were associated with reduced incidence of VAP; future investigation is needed to determine whether mucolytic agents can decrease the rate of VAP in children with severe TBI.

The Impact of Sleep Disturbances on Health-Related Quality of Life in Children With Acquired Brain Injury After Critical Care

BACKGROUND

Over 60,000 children with acquired brain injury (ABI) in the United States require admission to pediatric intensive care units annually. Over 50% suffer sleep-wake disturbances (SWDs) months after discharge. Given the importance of sleep to brain repair, we hypothesized that SWD would be associated with poorer health-related quality of life (HRQOL).

METHODS

Cross-sectional analysis of prospectively collected data in children with ABI aged 3 to 18 years evaluated 1 to 3 months after critical care hospitalization (N = 151). SWD measured by Sleep Disturbances Scale for Children and defined as T-score ≥60 signifying moderate-severe risk of sleep disorders. HRQOL measured by Pediatric Quality of Life Inventory, which defines minimal clinically important difference as 4.5 points in total score. Secondary outcomes included scores for Physical, Emotional, Social, and School Function domains. SWD groups were compared with Mann-Whitney tests. Multiple linear regression evaluated association between SWD and HRQOL controlling for patient and ABI characteristics. Significance was defined as P < 0.05.

RESULTS

SWDs were present in 66% (n = 100). HRQOL total score was significantly lower in children with SWD (median = 70; interquartile range [IQR] = 54, 80) versus without (median = 85; IQR = 67, 94; P < 0.001). Median scores in emotional, social, and school domains were significantly lower in SWD group (all P < 0.01). When controlling for age, sex, critical care interventions, preadmission comorbidities, and decline from preadmission Functional Status Scale, presence of SWD significantly reduced HRQOL total score nearly three times minimal clinically important difference (β-coefficient = -12.1; 95% confidence Interval = -17.9, -6.2).

CONCLUSIONS

SWD following ABI significantly decreased HRQOL overall and across multiple health domains. Sleep is potentially modifiable. Our data support future studies targeting sleep to improve outcomes after ABI.

Sleep disturbances in infants and young children following an acquired brain injury

STUDY OBJECTIVES

Sleep disturbances impact over half of older children and teens with acquired brain injury (ABI) following critical care hospitalization but are underevaluated in infants and young children. Given the importance of sleep in brain development and healing after injury, we hypothesized sleep disturbances would be associated with worse neurodevelopmental outcomes in infants with ABI.

METHODS

We performed a retrospective cohort study of 68 children aged 2-32 months following critical care hospitalization for ABI. The Brief Infant Sleep Questionnaire assessed sleep disturbances. Bayley Scales of Infant and Toddler Development, third edition and Adaptive Behavior Assessment System, third edition assessed developmental and adaptive functioning outcomes, respectively. t tests compared sleep characteristics in infants with ABI to historical healthy controls. Spearman's correlation evaluated relationships among sleep and outcomes. Multiple linear regression investigated relationships controlling for demographic and ABI characteristics.

RESULTS

Compared to healthy controls, children with ABI had shorter nighttime sleep duration (P = .01), longer daytime sleep duration (P < .001), and longer duration of nighttime awakenings (P < .001). Duration of night awakenings negatively correlated with Bayley Cognitive scores (Spearman's correlation = -.40). Night awakenings negatively correlated with worse Adaptive Behavior Assessment System, third edition General Adaptive Composite scores (Spearman's correlation = -.42). When controlling for demographic and ABI characteristics, ≥ 3 awakenings was significantly associated with worse Adaptive Behavior Assessment System, third edition General Adaptive Composite (β = -11.3; 95% confidence interval = -19.2, -3.5).

CONCLUSIONS

Sleep disturbances are associated with poorer outcomes in infants and toddlers after ABI. Sleep is vital to recovery and a potentially modifiable target to improve outcomes.

CITATION

Klapp JM, Hall TA, Riley AR, Williams CN. Sleep disturbances in infants and young children following an acquired brain injury. J Clin Sleep Med. 2022;18(10):2387-2395.

Functional outcomes at PICU discharge in hemato-oncology children at a tertiary oncology center in Hong Kong

BACKGROUND

Advancements in cancer treatment have resulted in longer survival but often at the expense of new therapy-associated morbidities. The aim of this study is to evaluate functional outcomes of hemato-oncology patients at PICU discharge, and to identify associated risk factors.

METHODS

A single-center retrospective observational study. All children (< 19 years) with a hemato-oncology diagnosis admitted to the Hong Kong Children's Hospital PICU over a 2-year period were included. Functional status upon admission and discharge were compared. Univariable and multi-variable analyses were employed to identify risk factors associated with new morbidities.

RESULTS

Out of 288 PICU admissions, there were 277 live discharges (mortality 4%), of which 52 (18.8%) developed new morbidities. Emergency admission, severity of illness at admission, organ dysfunction and support were associated with new morbidities (OR 1.08-11.96; p < 0.05). Adjusting for confounding factors, higher Pediatric Logistic Organ Dysfunction 2 score at admission was significantly associated with development of new morbidities (OR 1.34; 95% CI 1.18-1.54; p < 0.001).

CONCLUSION

Critically ill children with hemato-oncological diseases had a higher rate of developing new morbidities (18.8%) compared with the general PICU population (4-8%). This was associated with severity of illness at admission. Further work is warranted to understand the lasting effects of these new morbidities and mitigating interventions.

Exploring Trends in Neuromonitoring Use in a General Pediatric ICU: The Need for Standardized Guidance

Neuromonitoring has become more standardized in adult neurocritical care, but the utility of different neuromonitoring modalities in children remains debated. We aimed to describe the use of neuromonitoring in critically ill children with and without primary neurological diseases. We conducted a retrospective review of patients admitted to a 32-bed, non-cardiac PICU during a 12-month period. Neuro-imaging, electroencephalogram (EEG), cerebral oximetry (NIRS), automated pupillometry, transcranial doppler (TCD), intracranial pressure (ICP) monitoring, brain tissue oxygenation (PbtO2), primary diagnosis, and outcome were extracted. Neuromonitoring use by primary diagnosis and associations with outcome were observed. Of 1946 patients, 420 received neuro-imaging or neuromonitoring. Primary non-neurological diagnoses most frequently receiving neuromonitoring were respiratory, hematologic/oncologic, gastrointestinal/liver, and infectious/inflammatory. The most frequently used technologies among non-neurological diagnoses were neuro-imaging, EEG, pupillometry, and NIRS. In the multivariate analysis, pupillometry use was associated with mortality, and EEG, NIRS, and neuro-imaging use were associated with disability. Frequencies of TCD and PbtO2 use were too small for analysis. Neuromonitoring is prevalent among various diagnoses in the PICU, without clear benefit on outcomes when used in an ad hoc fashion. We need standard guidance around who, when, and how neuromonitoring should be applied to improve the care of critically ill children.

Post-Intensive Care Syndrome in a Cohort of School-Aged Children and Adolescent ICU Survivors: The Importance of Follow-up in the Acute Recovery Phase

Pediatric intensive care unit (PICU) survivors experience a collection of physical, cognitive, emotional, and social symptoms named post-intensive care syndrome (PICS). We aimed to quantify PICS morbidities from multiple stakeholder perspectives across domains. Using physician, neuropsychologist, and parent/caregiver-completed outcome measures across domains in a cross-sectional analysis of 186 children between the ages of 8 and 19 years with data from a PICU follow-up clinic 1 to 3 months after PICU discharge, we quantified PICS morbidities and used Spearman correlation to evaluate interdependence of PICS domains. Compared with pre-hospitalization functioning, new PICS-related morbidities were observed and significant correlations were identified between the PICS domains. Results highlight the need to identify and support patients and families for multiple morbidities simultaneously across all relevant PICS domains; moreover, an important divergence between caregiver report, physician, and neuropsychologist assessment was also found, showcasing the importance of multiple assessments and perspectives. New PICS morbidities across domains are common after discharge from the PICU, and timely follow-up care is needed that involves collaboration/integration of physicians, neuropsychologists, youth, and families to effectively identify and treat PICS-related issues.

Sleep and Executive Functioning in Pediatric Traumatic Brain Injury Survivors after Critical Care

Over 50,000 children are hospitalized annually for traumatic brain injury (TBI) and face long-term cognitive morbidity. Over 50% develop sleep/wake disturbances (SWDs) that can affect brain development and healing. We hypothesized SWDs would portend worse executive function outcomes in children aged 3−18 years with TBI 1−3 months after hospital discharge. SWDs were defined using the Sleep Disturbances Scale for Children (t-scores ≥ 60). Outcomes included the Global Executive Composite (GEC, t-score) from the Behavior Rating Inventory of Executive Function, Second and Preschool Editions, and multiple objective executive function assessments combined through Principal Components Analysis into a Neurocognitive Index (NCI, z-score). Multiple linear regression evaluated associations between SWDs and executive function outcomes, controlling for covariates. Among 131 children, 68% had clinically significant SWDs, which were associated with significantly worse median scores on the GEC (56 vs. 45) and NCI (−0.02 vs. 0.42; both p < 0.05). When controlling for baseline characteristics and injury severity in multivariable analyses, SWDs were associated with worse GEC (β-coefficient = 7.8; 95% Confidence Interval = 2.5, 13.1), and worse NCI (β-coefficient = −0.4; 95% Confidence Interval = −0.8, −0.04). SWDs in children with TBI are associated with worse executive function outcomes after hospital discharge, and may serve as modifiable targets to improve outcomes.

Risk Factors for Physical Function Impairments in Postintensive Care Syndrome: A Scoping Review

OBJECTIVE

Survivors of critical illness may experience short- and long-term physical function impairments. This review aimed to identify the risk factors for physical function impairments from the current literature.

DATA SOURCES

A systematic search of the PubMed, Embase, Web of Science, and Cochrane Library databases following the Preferred Reporting Items for Systematic Reviews and Meta-analyses extension for Scoping Reviews guideline was performed.

STUDY SELECTION

The risk factors reported in all human studies reporting physical function impairments in children admitted to the pediatric intensive care unit (PICU) were reviewed and categorized. Two investigators independently screened, evaluated, and selected studies for inclusion. Data from eligible studies were extracted by one investigator, and another investigator reviewed and verified the data. A systematic narrative approach was employed to review and summarize the data.

RESULTS

A total of 264 studies were found to be eligible, with 19 studies meeting the inclusion criteria. Children admitted to the PICU experienced physical function impairments during their stay, which can last for years. The studies varied primarily in the measurement timing and tools used. The most frequently reported risk factors for physical function impairments were age, race or ethnicity, a pre-admission chronic condition, sex, disease severity, duration or the presence of mechanical ventilation, and admission diagnosis.

CONCLUSIONS

Physical function impairments may be persistent in PICU survivors. To prevent these impairments in critically ill patients, pediatricians should pay attention to modifiable risk factors, such as the duration of mechanical ventilation. Future studies need to promote a combination of standardized measures for the detection and prevention of physical function impairments.