Cognitive and behaviour assessment following Kawasaki disease--a study from North India

Association of Kawasaki disease with intellectual disability, attention deficit hyperactivity disorder, and autism spectrum disorder: a systematic review and meta-analysis

BACKGROUND

The relationship between Kawasaki disease (KD) and neurodevelopmental disorders (NDDs) remains unclear. This study aims to explore the association between them.

METHOD

A systematic review was conducted using PubMed and Embase databases from inception to May 1, 2024 (INPLASY202450017). We included case-control or cohort studies comparing KD patients to healthy controls in assessing attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), and intellectual disability (ID). The meta-analysis employed a random-effects model to calculate effect sizes using hazard ratios (HRs) with 95% confidence intervals (CIs) for the disease occurrence. Moreover, mean differences (MDs) were used to calculate intelligence quotient (IQ).

RESULTS

Four eligible studies, including 1,454,499 participants, were analyzed for ADHD, ASD, and ID. The risk of ADHD in KD patients was higher than in healthy controls (HR[95%CI] = 1.76[1.21-2.57]). However, the risks of ASD (HR[95%CI] = 1.68[0.47-5.94]) and ID (HR[95%CI] = 1.39[0.52-2.63]) were not significantly different between KD and controls. Additionally, three studies with 365 participants were analyzed for IQ. IQ comparisons showed no significant differences in full IQ (MD[95%CI]=-0.01[-2.44-2.42]), verbal IQ (MD[95%CI]=-1.05[-4.42-2.33]), and performance IQ (MD[95%CI]=-0.08[-2.75-2.59]).

CONCLUSION

This study indicates that individuals with KD have a higher risk for ADHD but not for ASD or ID.

TRIAL REGISTRATION

INPLASY, INPLASY202450017. Registered 05 May 2024, https://inplasy.com/inplasy-2024-5-0017/ .

Long-Term Impact of Hospitalization for Kawasaki Disease on Health-Related Quality of Life

OBJECTIVE

To prospectively evaluate the long-term impact of Kawasaki disease (KD) hospitalization on health-related quality of life (HRQoL).

METHODS

We merged the Outcomes Assessment Program and KD databases and queried for KD admissions between 1 month and 18 years of age. Patients with a diagnosis of community-acquired pneumonia were included as a comparison group. HRQoL was evaluated with the parent proxy Pediatric Quality of Life Inventory (PedsQL). Long-term follow-up PedsQL surveys were performed at least 1 year after initial diagnosis and hospitalization. Results for the entire cohort adjusted for significant differences were calculated. Propensity score-matched cohorts were constructed from the unmatched cohorts of patients with long-term survey responses. Subgroup analysis for the KD group was performed.

RESULTS

Patients with KD (n = 61) versus pneumonia (n = 80) had a lower PedsQL total score on admission and experienced a significantly greater HRQoL decline from baseline to admission. At long-term follow-up, no difference occurred in HRQoL between patients with KD and pneumonia, and 89% of patients with KD reached their baseline PedsQL scores. KD diagnostic subtype, coronary artery dilatation, and need for longer follow-up were not associated with HRQoL outcomes at any time point. Intravenous immunoglobulin nonresponders demonstrated lower HRQoL at admission, which did not persist at follow-up.

CONCLUSIONS

Children with KD experience acute and significant HRQoL impairment exceeding that of children with newly diagnosed pneumonia, but the scores return to baseline at long-term follow-up. The recoveries at short- and long-term intervals are similar to patients with pneumonia.

Long-term hearing and neurodevelopmental outcomes following Kawasaki disease: A population-based cohort study

BACKGROUND

Kawasaki disease (KD) incidence is increasing in Ontario. Cardiovascular sequelae following KD are well-described. However, there are limited data on non-cardiovascular outcomes.

OBJECTIVES

To determine the risk of hearing loss, anxiety, developmental disorders, intellectual disabilities and attention-deficit/hyperactivity disorder (ADHD) among KD survivors vs. non-exposed children.

METHODS

We included all Ontario children (≤18 yr) surviving hospitalization with a KD diagnosis between 1995 and 2018, using population-based health administrative databases. We excluded children with prior KD diagnoses and non-residents. KD cases were matched with 100 non-exposed children by age, sex and year. Follow-up continued until death or March 2019. We calculated the prevalence, incidence and adjusted hazard ratios (aHR [95%CI]) of outcomes between 0-1 yr, 1-5 yr, 5-10 yr and >10 yr follow-up.

RESULTS

Among 4597 KD survivors, 364 (7.9%) were diagnosed with hearing loss, 1213 (26.4%) anxiety disorders, 398 (8.7%) developmental disorders, 51 (1.1%) intellectual disability and 21 (0.5%) ADHD, during median 11 year follow-up. Compared to 459,700 non-exposed children, KD survivors were not at increased risk of hearing loss after adjustment for potential confounders. KD survivors were at increased risk of anxiety disorders between 0-1 yr (aHR 1.75 [1.46-2.10]), 1-5 yr (aHR 1.13 [1.01-1.28]), 5-10 yr (aHR 1.14 [1.03-1.28]) and >10 yr (aHR 1.11 [1.02-1.22]); developmental disorders between 0-1 yr (aHR 1.49 [1.28-1.74]) and 1-5 yr (aHR 1.19 [1.02-1.40]); intellectual disabilities >10 yr (aHR 2.36 [1.36-4.10]); and ADHD >10 yr (aHR 2.01 [1.14-3.57]).

CONCLUSIONS

KD survivors are at increased risk of being diagnosed with anxiety disorders sooner, being diagnosed with developmental disorders between 0 and 5 yr and being diagnosed with intellectual disabilities or ADHD >10 yr after KD diagnosis. This may justify enhanced developmental and audiological surveillance of KD survivors.

Cognitive development of children with Kawasaki disease and the parenting stress of their caregivers in Taiwan: a case-control study

OBJECTIVE

Kawasaki disease (KD) is an acute form of febrile vasculitis that occurs in early childhood. The multisystemic vasculitis common in patients with KD may influence blood perfusion in the brain, and thus caregivers of children with KD may feel stress with regard to caring for them. Intravenous immunoglobulin (IVIG) infusion is the standard treatment for acute KD, and the most serious complication of KD is coronary artery aneurysms (coronary artery lesion (CAL)). This study aimed to investigate the relationships between KD heterogeneity and the risk of patients' cognitive impairment or caregivers' parenting stress.

DESIGN

A case-control study with consecutive sampling.

SETTING

A medical centre (Kaohsiung Chang Gung Memorial Hospital, Taiwan).

PARTICIPANTS

This study consisted of 176 patients with KD (mean age: 5.5 years, 60.8% boys) and 85 healthy children (mean age: 6.4 years, 54.1% boys).

PRIMARY AND SECONDARY OUTCOME MEASURES

Based on the children's age, each patient with KD and control subject was administered an assessment using the Mullen Scales of Early Learning or the Wechsler Intelligence Scale, and parenting function of their caregivers was assessed using the Parenting Stress Index (PSI)-Short Form.

RESULTS

We observed no significant differences in any developmental index, cognitive function or parenting stress between patients with KD and controls. Among the children with KD, IVIG administration nor CAL was associated with children's cognitive scores. However, the caregivers of patients who had CAL suffered from greater PSI total scores than those of patients without CAL. Furthermore, the caregivers who had education levels of a master's degree or above showed less parenting stress than those who had an education level of college or lower.

CONCLUSION

Caregivers' education is associated to parenting stress, and caregivers of patients with KD who developed CAL may feel stress about the unpredictable sequela caused by CAL for their children. Such caregivers may require support to fulfil their parenting roles.

Association Between Kawasaki Disease and Childhood Epilepsy: A Nationwide Cohort Study in Taiwan

Background: Kawasaki disease is a common vasculitis of childhood in East Asia. The complications following Kawasaki disease mostly included cardiovascular sequelae; non-cardiac complications have been reported but less studied. This study investigated potential epilepsy following Kawasaki disease in Taiwanese children.

Objectives: Through National Health Insurance Research Database, we retrospectively analyzed the data of children aged <18 years with clinically diagnosed Kawasaki disease from January 1, 2000 to December 31, 2012 in Taiwan. These patients were followed up to estimate the incidence of epilepsy in the Kawasaki cohort in comparison with that in the non-Kawasaki cohort in Taiwan.

Results: A total of 8,463 and 33,872 patients in the Kawasaki and non-Kawasaki cohorts were included in the study, respectively. Of the total eligible study subjects, 61.1% were boys and 38.9% were girls; most patients with newly diagnosed Kawasaki disease were aged <5 years [88.1%]. Patients with Kawasaki disease showed a higher incidence rate [47.98 vs. 27.45 every 100,000 person years] and significantly higher risk [adjusted hazard ratio = 1.66, 95% confidence interval = 1.13–2.44] of epilepsy than those without the disease. Additionally, female sex [adjusted hazard ratio = 2.30, 95% confidence interval = 1.31–4.04] and age <5 years [adjusted hazard ratio = 1.82, 95% confidence interval = 1.22–2.72] showed a significantly higher risk of epilepsy in the Kawasaki cohort.

Conclusion: Results revealed a higher incidence rate and significant risk of epilepsy in Taiwanese children with Kawasaki disease than in those without the disease. Therefore, children diagnosed with Kawasaki disease are recommended follow-up as they have a high risk of epilepsy and seizure disorders.

Kawasaki Disease Substantially Impacts Health-Related Quality of Life

OBJECTIVE

To prospectively evaluate the acute impact of Kawasaki disease (KD) on health-related quality of life (HRQoL) and to assess deterioration in the HRQoL experienced by children with KD compared with other childhood diseases.

STUDY DESIGN

We merged the Outcomes Assessment Program database obtained prospectively with the existing KD database and queried for KD admissions between 1 month and 13 years of age. HRQoL was evaluated with the parent-proxy Pediatric Quality of Life Inventory (PedsQL) 4.0 Generic Core and Infant Scales. We compared the KD HRQoL results with those obtained from newly diagnosed patients with cancer and pneumonia, matched for age, sex and race. PedsQL total scores over time were assessed with ANCOVA models, adjusted for matching variables and PedsQL score prior to admission.

RESULTS

We identified 89 patients with KD and compared 65 subjects with an equal number with pneumonia and with 67 subjects with newly diagnosed cancer. Patients with demonstrated lower PedsQL total score on admission and suffered a significantly greater HRQoL decline from baseline to admission than the other groups. KD diagnostic subtype (complete or incomplete) and coronary artery dilatation were not associated with HRQoL outcomes. However, non-intravenous immunoglobulin responders showed greater HRQoL decline than responders (P = .03).

CONCLUSIONS

Children with KD suffer acute and significant HRQoL impairment exceeding that of children newly diagnosed with cancer. Lack of immediate treatment response may exert an additional HRQoL burden, whereas KD subtype and coronary artery dilatation do not.

Cognitive Development After Kawasaki Disease - Clinical Study and Validation Using a Nationwide Population-Based Cohort

BACKGROUND

This purpose of this study was to investigate whether Kawasaki disease (KD) increases the risk of cognitive impairment. In this clinical study, cognitive profiles were compared between KD patients, control subjects, and a nationwide population-based cohort to determine the potential correlation between KD and a subsequent diagnosis of an intellectual disability.

METHODS AND RESULTS

The clinical study consisted of 168 KD patients (mean age 5.6 years, 62.5% male) and 81 healthy controls (mean age 6.4 years, 54.3% male). The nationwide cohort consisted of 4,286 KD patients and 50,038 controls retrieved from the Taiwan National Health Insurance Research Database between 1996 and 2000. The clinical study sample revealed no significant difference in any developmental index or cognitive function between KD patients and controls across various age groups (P>0.05). In the nationwide cohort, Cox regression analysis showed that a diagnosis of KD did not significantly affect the likelihood of developing an intellectual disability (adjusted hazard ratio 0.87, 95% confidence interval 0.68-1.11).

CONCLUSIONS

Both the clinical data and the population-based cohort consistently demonstrated that KD does not increase a child's risk of future cognitive impairment. Although the outcome of the present study is negative, caregivers and patients with KD can be reassured that KD will have no effect on developmental milestones or cognitive function later in life.

Diagnosis, Treatment, and Long-Term Management of Kawasaki Disease: A Scientific Statement for Health Professionals From the American Heart Association

BACKGROUND

Kawasaki disease is an acute vasculitis of childhood that leads to coronary artery aneurysms in ≈25% of untreated cases. It has been reported worldwide and is the leading cause of acquired heart disease in children in developed countries.

METHODS AND RESULTS

To revise the previous American Heart Association guidelines, a multidisciplinary writing group of experts was convened to review and appraise available evidence and practice-based opinion, as well as to provide updated recommendations for diagnosis, treatment of the acute illness, and long-term management. Although the cause remains unknown, discussion sections highlight new insights into the epidemiology, genetics, pathogenesis, pathology, natural history, and long-term outcomes. Prompt diagnosis is essential, and an updated algorithm defines supplemental information to be used to assist the diagnosis when classic clinical criteria are incomplete. Although intravenous immune globulin is the mainstay of initial treatment, the role for additional primary therapy in selected patients is discussed. Approximately 10% to 20% of patients do not respond to initial intravenous immune globulin, and recommendations for additional therapies are provided. Careful initial management of evolving coronary artery abnormalities is essential, necessitating an increased frequency of assessments and escalation of thromboprophylaxis. Risk stratification for long-term management is based primarily on maximal coronary artery luminal dimensions, normalized as Z scores, and is calibrated to both past and current involvement. Patients with aneurysms require life-long and uninterrupted cardiology follow-up.

CONCLUSIONS

These recommendations provide updated and best evidence-based guidance to healthcare providers who diagnose and manage Kawasaki disease, but clinical decision making should be individualized to specific patient circumstances.

Dissecting Kawasaki disease: a state-of-the-art review

Kawasaki disease (KD) is a pediatric vasculitis with coronary artery aneurysms (CAA) as its main complication. The diagnosis is based on the presence of persistent fever and clinical features including exanthema, lymphadenopathy, conjunctival injection, and changes to the mucosae and extremities. Although the etiology remains unknown, the current consensus is that it is likely caused by an (infectious) trigger initiating an abnormal immune response in genetically predisposed children. Treatment consists of high dose intravenous immunoglobulin (IVIG) and is directed at preventing the development of CAA. Unfortunately, 10-20% of all patients fail to respond to IVIG and these children need additional anti-inflammatory treatment. Coronary artery lesions are diagnosed by echocardiography in the acute and subacute phases. Both absolute arterial diameters and z-scores, adjusted for height and weight, are used as criteria for CAA. Close monitoring of CAA is important as ischemic symptoms or myocardial infarction due to thrombosis or stenosis can occur. These complications are most likely to arise in the largest, so-called giant CAA. Apart from the presence of CAA, it is unclear whether KD causes an increased cardiovascular risk due to the vasculitis itself.

CONCLUSION

Many aspects of KD remain unknown, although there is growing knowledge on the etiology, treatment, and development and classification of CAA. Since children with previous KD are entering adulthood, long-term follow-up is increasingly important. What is known: • Kawasaki disease (KD) is a pediatric vasculitis with coronary artery damage as its main complication. • Although KD approaches its 50th birthday since its first description, many aspects of the disease remain poorly understood. What is new: • In recent years, multiple genetic candidate pathways involved in KD have been identified, with recently promising information about the ITPKC pathway. • As increasing numbers of KD patients are reaching adulthood, increasing information is available about the long-term consequences of coronary artery damage and broader cardiovascular risk.

Health related quality of life and perceptions of child vulnerability among parents of children with a history of Kawasaki disease

AIM

Kawasaki disease (KD) is an acute paediatric vasculitis. The psychosocial consequences of this sudden illness for parents are unknown. This study aimed to evaluate health related quality of life (HRQOL) and parental perceptions of child vulnerability (PPCV) in parents of children with KD, and to identify variables associated with PPCV.

METHODS

This cross-sectional study included 288 parents (83% mothers) of KD patients (mean age 8.7 years). HRQOL was assessed using the TNO-AZL Questionnaire for Adult's HRQOL (TAAQOL) and PPCV using the Child Vulnerability Scale (CVS). Scores of KD parents were compared with reference groups of Dutch parents. Logistic regression analyses were performed to examine associated variables.

RESULTS

The HRQOL of KD parents was comparable to the HRQOL of parents of healthy children. However, KD parents showed significantly higher PPCV, regarding both the median CVS total score and the percentage in the clinical range. No differences were found in CVS outcomes between KD parents and parents of a chronically ill child. None of the studied parental, child and disease characteristics were significantly associated with PPCV.

CONCLUSION

Parents perceived their KD child more vulnerable to illness than healthy children, while in reality the majority had fully recovered from KD.

Quality of life and behavioral functioning in Dutch children with a history of Kawasaki disease

OBJECTIVE

The authors evaluated health-related quality of life (HRQOL) and behavioral functioning in patients with a history of Kawasaki disease (KD).

STUDY DESIGN

A cross-sectional study was conducted at a tertiary referral center for KD follow-up in 280 patients (mean age 8.6 years, 60.0% male). Patients were eligible when they were aged 0-18 years and had a history of KD. HRQOL was assessed using the TNO-AZL Preschool Children Quality of Life questionnaire for children 0-5 years old and the Pediatric Inventory of Quality of Life Core Scales 4.0 for those 6-18 years old. Behavioral functioning was evaluated using the Strength and Difficulties Questionnaire (8-16 years proxy report and 11-16 years self-report). KD results were compared with Dutch norm data, and patients with and without coronary artery aneurysms were compared.

RESULTS

HRQOL was significantly worse for male patients aged 0-5 years on 4 of the 12 TNO-AZL Preschool Children Quality of Life questionnaire scales and for female patients on the motor functioning scale. At an older age, the HRQOL of patients was comparable with the norm population. Coronary artery status did not influence HRQOL. Parents reported more behavioral problems on the hyperactivity and emotional subscale in patients compared with the norm population.

CONCLUSIONS

Although at an older age the HRQOL of patients with KD is comparable with the Dutch norm, HRQOL seems to be particularly impaired at younger age. Parents reported more hyperactivity and emotional problems in patients with KD.