Physical activity as a clinical tool in the assessment of malnutrition

Objective

To measure physical activity in children with wasting and to look for association between poor physical activity and wasting.

Methods

Physical activity was measured in 56 children with wasting, using Children’s Activity Rating Scale, and compared with age- and sex-matched controls.

Results

A significant association was found between poor physical activity and malnutrition as determined by weight-for-height Z Score <-2 (P=0.001) and midupper-arm circumference (P=0.002).

Conclusion

Physical activity can be used as clinical parameter to assess malnutrition.     

ALCAPA: the role of myocardial viability studies in determining prognosis

Background  

ALCAPA is optimally treated by coronary artery reimplantation early in neonatal life. Delayed diagnosis, however, is not infrequent, because symptoms often do not manifest until about 3 months of age, coinciding with the physiological nadir in pulmonary vascular resistance. With delayed diagnosis, there is potential for coronary steal and irreversible myocardial injury, which worsens outcome.     

Juvenile Churg-Strauss Syndrome as an Etiology of Myocarditis and Ischemic Stroke in Adolescents; a Case Report

Background

Churg-Strauss syndrome (CSS), a systemic vasculitis accompanied by asthma and eosinophilia, almost invariably affects the lung and is frequently associated with cutaneous involvement. It rarely has cardiac involvement. We report an unusual case of CSS with myocardial involvement and stroke.

Case Presentation

A 16-year old female suffered of allergic asthma for 4 years. She was under treatment with oral prednisolone and seretide inhalation. After CSS diagnosis, she developed paroxysmal atrial tachycardia. Serum levels of Troponin I and Troponin T were increased indicating massive myocardial damage probably due to myocarditis. After 5 months she developed acute hemiparesis without any evidence of ischemic or hemorrhagic event. She was treated with IVIg, intravenous pulses of methylprednisone and cyclophosphamide for each complication.

Conclusion

Myocarditis and stroke may also complicate CSS which should be taken in consideration for better management.     

Cardiac Troponin-T as a Marker of Myocardial Dysfunction in Term Neonates with Perinatal Asphyxia

Objectives

To describe the diagnostic test properties of Cardiac Troponin-T (cTnT) in predicting myocardial dysfunction in asphyxiated term neonates by taking echocardiography as the gold standard and to establish the optimum cut-off values of cTnT for myocardial dysfunction, shock, severe hypoxic ischemic encephalopathy (HIE) and mortality by receiver operator characteristic (ROC) curve analysis.

Methods

This was a prospective study based on diagnostic test evaluation. The study included 120 term asphyxiated neonates in a tertiary care neonatal intensive care unit (NICU) in Southern India from June 2011 through June 2015. All the neonates were clinically evaluated. Venous blood was taken at 4 h of life for cTnT estimation. Echocardiography was done within 24 h of birth.

Results

The mean cTnT level of asphyxiated term neonates was 0.207±0.289 ng/ml (mean ± SD). Asphyxiated neonates with myocardial dysfunction had higher cTnT levels (0.277±0.231) as compared to those without myocardial dysfunction (0.061±0.036, p?=?0.0001). Using ROC curve, the cut-off cTnT values for myocardial dysfunction was 0.1145 ng/ml with sensitivity 92.4% and specificity 94.1%. Cardiac Troponin-T levels were significantly higher among asphyxiated neonates with shock (0.378±0.348, p?=?0.0001) and the levels also correlated positively with increasing grades of HIE. The cut-off cTnT value for mortality was 0.2505 ng/ml with sensitivity 83.9% and specificity 96.6%.

Conclusions

In asphyxiated term neonates, early cTnT elevation is a marker for predicting myocardial dysfunction and elevated cTnT levels had high sensitivity and specificity. There was significant relation with increasing cTnT values and increasing grades of HIE.

     

A national survey on the use of screening tools to detect physical child abuse

Purpose

Recognition of physical child abuse is imperative for ensuring children’s safety. Screening tools (ST) may increase identification of physical abuse; however, the extent of their use is unknown. This study assessed use of STs for physical abuse in children’s hospitals and determined attitudes regarding STs.

Methods

A web-based survey was sent to child abuse program contacts at 103 children’s hospitals. The survey assessed institutional use of a ST for physical abuse and characteristics of the ST used. Respondents were asked to identify benefits and liabilities of STs used or barriers to ST use.

Results

Seventy-two respondents (70 %) completed the survey; most (64 %) were child abuse pediatricians. Nine (13 %) respondents reported using a ST for physical abuse; STs varied in length, population, administration, and outcomes of a positive screen. Most respondents (86 %) using a ST felt that it increased detection of abuse. Barriers noted included lack of time for development and provider completion of a ST.

Conclusions

While few respondents endorsed use of a ST for physical abuse, most believed that it increased detection of abuse. Future research should focus on development of a brief, uniform ST for physical abuse which may increase detection in at-risk children.

     

Correlation between QRS Duration,Pulmonary Insufficiency and Right Ventricle Performance in Totally Corrected Tetralogy of Fallot

Objective

Despite progresses in surgical correction of Tetralogy of Fallot, pulmonary insufficiency and progressive dysfunction of the right ventricle impress its long-term prognosis. In this study we examined the correlations between QRS duration, pulmonary insufficiency and right ventricular performance index.

Methods

We enrolled 57 repaired Tetralogy of Fallot patients. QRS duration on electrocardiogram, pulmonary regurgitation index (regurgitation time to diastolic time ratio), and right ventricular myocardial performance index were measured.

Findings

There was a strong inverse correlation between QRS duration and pulmonary regurgitation index. However, significant correlation did not exist between QRS duration and right ventricular myocardial performance index. QRS duration ≥160 ms predicted severe pulmonary regurgitation with 100% sensitivity and 87% specificity.

Conclusion

Increased QRS duration can predict severity of pulmonary regurgitation.     

Evaluation of cardiac iron load by cardiac magnetic resonance in thalassemia

Objective  

To quantify myocardial iron stores by Cardiac Magnetic Resonance (CMR).     

Effect of socioeconomic status on objectively measured physical activity

Background

A socioeconomic gradient in childhood obesity is known to be present by the age of school entry in the UK. The origin of this gradient is unclear at present, but must lie in socioeconomic differences in habitual physical activity, sedentary behaviour, or dietary intake.

Aims

To test the hypothesis that habitual physical activity and/or sedentary behaviour are associated with socioeconomic status (SES) in young Scottish children.

Methods

Observational study of 339 children (mean age 4.2 years, SD 0.3) in which habitual physical activity and sedentary behaviour were measured by accelerometry over six days (study 1). In a second study, 39 pairs of children of distinctly different SES (mean age 5.6 years, SD 0.3) were tested for differences in habitual physical activity and sedentary behaviour by accelerometry over seven days.

Results

In study 1, SES was not a significant factor in explaining the amount of time spent in physical activity or sedentary behaviour once gender and month of measurement were taken into account. In study 2, there were no significant differences in time spent in physical activity or sedentary behaviour between affluent and deprived groups.

Conclusion

Results do not support the hypothesis that low SES in young Scottish children is associated with lower habitual physical activity or higher engagement in sedentary behaviour.     

Practical physical activity measurement in youth: a review of contemporary approaches

Background

The accurate evaluation of physical activity levels amongst youth is critical for quantifying physical activity behaviors and evaluating the effect of physical activity interventions. The purpose of this review is to evaluate contemporary approaches to physical activity evaluation amongst youth.

Data sources

The literature from a range of sources was reviewed and synthesized to provide an overview of contemporary approaches for measuring youth physical activity.

Results

Five broad categories are described: selfreport, instrumental movement detection, biological approaches, direct observation, and combined methods. Emerging technologies and priorities for future research are also identified.

Conclusions

There will always be a trade-off between accuracy and available resources when choosing the best approach for measuring physical activity amongst youth. Unfortunately, cost and logistical challenges may prohibit the use of ??gold standard?? physical activity measurement approaches such as doubly labelled water. Other objective methods such as heart rate monitoring, accelerometry, pedometry, indirect calorimetry, or a combination of measures have the potential to better capture the duration and intensity of physical activity, while self-reported measures are useful for capturing the type and context of activity.     

A Novel Method for Quantification of Left Ventricular Noncompaction Using Two-Dimensional Echocardiography in Children

Objective

Although there are several echocardiographic criteria, there is not yet a general consensus about the diagnosis of left ventricular noncompaction. The current criteria are mostly based on the areas with maximal noncompaction in the heart. The echocardiographer may miss this maximal point leading to a misdiagnosis. Accordingly, we suggested a new method to measure the percentage of myocardial noncompaction using two-dimensional echocardiography.

Methods

In this study, the new method was examined on 4 noncompaction and 26 dilated cardiomyopathies, and 25 normal subjects. The percentage of noncompaction was measured at 3 levels (apical, papillary muscle and mitral valve) and averaged.

Findings

The mean percentages of myocardial noncompaction were 3.59±2.27, 8.86±5.52 and 34.7±26.1 in the control, dilated cardiomyopathy and noncompaction groups, respectively. A value of 17% or greater could distinguish left ventricular noncompaction from dilated cardiomyopathy with 92% specificity and 100% sensitivity and from normal subjects with 100% specificity and sensitivity. This percentage had a statistically significant association with noncompacted to compacted myocardial thickness ratio (P<0.001).

Conclusion

This method showed good correlations with the existing echocardiographic and magnetic resonance criteria. However, it is not dependent on finding the area of maximal involvement. Being comparable to magnetic resonance imaging in accuracy, it is easier to perform and more available.     

Physical activity levels in children and adolescents are reduced after the Fontan procedure, independent of exercise capacity, and are associated with lower perceived general health

Objectives

To determine physical activity levels in paediatric patients who underwent the Fontan procedure, and their relationship to functional status and exercise capacity.

Study Design

We studied 147 patients (ages 7–18 years) at a median of 8.1 years after Fontan, as part of the Pediatric Heart Network cross‐sectional study of Fontan survivors. Assessment included medical history, self‐reported physical activity, parent‐completed Child Health Questionnaire (CHQ), cardiopulmonary exercise testing and physical activity level measured by accelerometry (MTI Actigraph).

Results

Measured time spent in moderate and vigorous activity was markedly below normal at all ages, particularly in females, and was not significantly related to self‐reported activity levels, or to maximum Vo₂, Vo₂ at anaerobic threshold or maximum work rate on exercise testing. Lower measured activity levels were significantly related to lower perceived general health but not to self‐esteem, physical functioning, social impact of physical limitations or overall physical or psychosocial health summary scores. Reduced exercise capacity was more strongly related than measured activity levels to lower scores in general health, self‐esteem and physical functioning.

Conclusions

Physical activity levels are reduced after Fontan, independent of exercise capacity, and are associated with lower perceived general health but not other aspects of functional status.     

Serial changes in myocardial function in preterm infants over a four week period: the effect of gestational age at birth

Background

Myocardial performance is impaired in the first days of life in preterm infants but improves by day 5. Tissue Doppler imaging (TDI) is a novel and reliable means of assessing myocardial performance.

Objective

To investigate myocardial performance using TDI and shortening fraction (SF) in preterm infants of different gestational age groups and serial changes in these parameters in first four weeks of life.Study designInfants less than 36 weeks of gestation were divided into group 1 (24–27 weeks, n = 8), group 2 (28–31 weeks, n = 12) and group 3 (32–35 weeks, n = 13). Infants with severe congenital malformations, a hypoxic insult at birth, and those on inotropic support were excluded. Echocardiograms were performed at 36–48 hours, 2 weeks and 4 weeks of life. Left ventricular (LV) SF, systolic (S′), early diastolic (E′) and late diastolic (A′) TDI velocities were assessed. We analyzed the data using a repeated-measures ANOVA.

Results

Thirty three infants underwent serial TDI and SF measurements. There was an increase in LV S′ (p = .02) and E′ (.01) velocities in group 2 , and in group 3 (p = .03 for S′ and p = .04 for E′), but no significant increase in group 1 (p = .48 for S′ and .32 for E′). At each study point, there was significant difference in myocardial performance between group 1 and 3 for each of the parameters (p < .05). There was no significant increase in SF over time in any of the groups.

Conclusion

We describe a serial increase in myocardial performance in infants of 28 weeks gestation and above. While there was no change in myocardial performance among the most extremely preterm infants, this may have been the result of small sample size of the group.     

Cardiac Function After the Immediate Transitional Period in Very Preterm Infants Using Speckle Tracking Analysis

Background

The postnatal period in preterm infants involves multiple physiologic changes starting directly after birth and continuing for days or weeks. To recognize and treat compromise, it is important to measure cardiovascular function. We used a novel technique (speckle tracking echocardiography, STE) to measure cardiac function in this period.

Methods

We obtained cardiac ultrasound images at day 3, 7, 14, 21 and 28 in preterm infants <30-week gestation. Conventional measures included cardiac size, left ventricular stroke volume, atrial volume and the patent ductus arteriosus (PDA). Four chamber images were analyzed with STE, which provided parameters of left ventricular volume, longitudinal deformation and myocardial velocities.

Results

Images of 54 infants (gestational age 23–29 weeks) were analyzed. STE-derived stroke volume correlated well with conventional echocardiography-derived stroke volume, but agreement was suboptimal. Most STE parameters showed good reliability. All volume parameters and systolic and atrial velocities increased over time. Cardiac deformation and early diastolic velocity did not change. A PDA was associated with 33 % increased stroke volume at day 3 up to 98 % at day 28 with a spherically enlarged heart and increased filling pressure.

Conclusion

Speckle tracking echocardiography analysis is a feasible and reliable technique that can simultaneously obtain systolic and diastolic volumes, longitudinal deformation and myocardial velocities from one ultrasound window. Preterm hearts maintain cardiac function well during the first weeks of life, even with increased preload as a consequence of a PDA.

     

An examination of the beliefs, attitudes and counselling practices of paediatric oncologists toward physical activity: A provincial survey

BACKGROUND

With an increasing population of childhood cancer survivors and a growing recognition of the long-term effects of diagnosis and treatment, it is imperative that modifiable risk factors for long-term health and disease comorbidity be identified and addressed. Physical activity is one therapy that is gaining credibility in enhancing quality of life and reducing the burden of disease.

OBJECTIVES

To examine the beliefs, attitudes and counselling practices of a group of Alberta-based paediatric oncologists.

METHODS

All Alberta-based physicians with a known specialty in paediatric oncology were approached and asked to complete a onetime, mail-out survey.

RESULTS

All responding physicians regarded both personal exercise and physical activity for childhood cancer survivors as moderately to extremely important. Importantly, one-half of the respondents believed that there is no adverse risk associated with physical activity in this survivor group. While the bulk of physicians report prescribing physical activity, few believe that their patients actually follow these recommendations.

CONCLUSIONS

Responding oncologists acknowledge the importance of physical activity for all survivors; however, future research is needed to better understand how to best promote healthy active living within this group.     

Biocultural approach of the association between maturity and physical activity in youth

Objective

To test the biocultural model through direct and indirect associations between biological maturation, adiposity, cardiorespiratory fitness, feelings of sadness, social relationships, and physical activity in adolescents.

Mindfulness-Based Interventions Among Adolescents With Chronic Diseases in Clinical Settings: A Systematic Review

Introduction

We aimed to determine the benefits/efficacy of mindfulness-based interventions (MBIs) implemented among adolescents with chronic diseases in clinical settings.

The myocardial function during and after whole-body therapeutic hypothermia for hypoxic–ischemic encephalopathy,a cohort study

Background

Therapeutic hypothermia has become standard treatment for moderate and severe neonatal hypoxic–ischemic encephalopathy (HIE) to reduce cerebral morbidity and mortality. The effect on the heart is incompletely explored.

Aim

To assess the myocardial function during and after whole-body therapeutic hypothermia for HIE.

Study design

Observational cohort study.

Subjects

Forty-four infants with HIE cooled for 72 hours were compared with 48 healthy term infants and 20 normothermic infants with HIE.

Outcome measures

Tissue Doppler deformation indices of myocardial function (peak systolic strain, peak systolic strain-rate, early diastole strain-rate and strain-rate in atrial systole) during (days 1 and 3) and after (day 4) therapeutic hypothermia.

Results

On days one and three all indices in both HIE groups were lower than the corresponding indices in the healthy infants. The two HIE groups had similar indices, except peak systolic strain-rate on days 1 and 3 and strain-rate in atrial systole on day 1. All strain-rate indices improved from day 3 to 4 (after rewarming) in the cooled group and achieved similar values to those in healthy infants on day 3. All indices were higher in the cooling-group after rewarming than in the normothermic infants with HIE on day 3, except early diastolic strain-rate.

Conclusions

Infants with HIE had similarly impaired myocardial function during days 1–3 whether normothermic or hypothermic. The myocardial function improved significantly at day 4 (after rewarming), approaching the day 3 levels in the healthy neonates.     

The contribution of physical fitness to individual and ethnic differences in risk markers for type 2 diabetes in children: The Child Heart and Health Study in England (CHASE)

Background

The relationship between physical fitness and risk markers for type 2 diabetes (T2D) in children and the contribution to ethnic differences in these risk markers have been little studied. We examined associations between physical fitness and early risk markers for T2D and cardiovascular disease in 9‐ to 10‐year‐old UK children.

Methods

Cross‐sectional study of 1445 9‐ to 10‐year‐old UK children of South Asian, black African‐Caribbean and white European origin. A fasting blood sample was used for measurement of insulin, glucose (from which homeostasis model assessment [HOMA]‐insulin resistance [IR] was derived), glycated hemoglobin (HbA1c), urate, C‐reactive protein (CRP), and lipids. Measurements of blood pressure (BP) and fat mass index (FMI) were made; physical activity was measured by accelerometry. Estimated VO_{2 max} was derived from a submaximal fitness step test. Associations were estimated using multilevel linear regression.

Results

Higher VO_{2 max} was associated with lower FMI, insulin, HOMA‐IR, HbA1c, glucose, urate, CRP, triglycerides, LDL‐cholesterol, BP and higher HDL‐cholesterol. Associations were reduced by adjustment for FMI, but those for insulin, HOMA‐IR, glucose, urate, CRP, triglycerides and BP remained statistically significant. Higher levels of insulin and HOMA‐IR in South Asian children were partially explained by lower levels of VO_2max compared to white Europeans, accounting for 11% of the difference.

Conclusions

Physical fitness is associated with risk markers for T2D and CVD in children, which persist after adjustment for adiposity. Higher levels of IR in South Asians are partially explained by lower physical fitness levels compared to white Europeans. Improving physical fitness may provide scope for reducing risks of T2D.     

Noninvasive Evaluation of Myocardial Systolic Dysfunction in the Early Stage of Kawasaki Disease: A Speckle-Tracking Echocardiography Study

Background:

Evaluation of myocardial function by speckle-tracking echocardiography is a new method for the early diagnosis of systolic dysfunction.

Objectives:

We aimed to determine myocardial speckle-tracking echocardiography indices in Kawasaki Disease (KD) patients and compare them with the same indices in control subjects.

Patients and Methods:

Thirty-two patients (65.5% males) with KD and 19 control subjects with normal echocardiography participated in this study. After their demographic characteristics and clinical findings were recorded, all the participants underwent transthoracic echocardiography. Strain (S), Strain Rate (SR), Time to Peak Strain (TPS), and Strain Rate (TPSR), longitudinal velocity and view point velocity images in the two, three, and four-chamber views were semi-automatically obtained via speckle-tracking echocardiography.

Results:

Among the patients, Twenty-four cases (75%) were younger than 4 years. Mean global S and SR was significantly reduced in the KD patients compared to controls (17.03 ± 1.28 vs. 20.22 ± 2.14% and 1.66 ± 0.16 vs. 1.97 ± 0.25 1/second, respectively), while there were no significant differences regarding mean TPS, TPSR, longitudinal velocity and view point velocity. Using repeated measure of analysis of variances, we observed that S and SR decreased from base to apical level in both groups. The change in the pattern of age adjusted mean S and SR across levels was significantly different between the groups (P < 0.001 for both parameters).

Conclusions:

We showed changes in S and SR assessed in KD patients versus control subjects in the acute phase of KD. However, we suggest that further studies be undertaken to compare S and SR in the acute phase and thereafter in KD patients.