Time spent watching television impacts on body mass index in youth with obesity, but only in those with shortest sleep duration.

AIM: To determine the interplay between sleep and sedentary behaviours on body mass index (BMI) in children with obesity. METHODS: Cross-sectional study of 343 children with obesity aged 4-17 years, from a tertiary care weight management clinic in Melbourne, Victoria, Australia. Multifaceted data relating to activity and sleep from child and parent questionnaires analysed with anthropometric data collected during routine clinical care. Associations between sleep duration and activity measures were examined via regression models with adjustment for potential confounders. RESULTS: Higher BMI was associated with more hours spent watching television (P = 0.04), as well as less reported enjoyment of physical activity (P = 0.005) and less time spent in organised sport activity (P = 0.005). Higher BMI was also associated with higher levels of obstructive sleep apnoea (P = 0.002). Less time in bed was associated with higher levels of BMI (P = 0.03) but analysis by sex revealed this association to only hold for males. In the whole group, a significant television and sleep interaction was seen, such that increasing television watching was associated with higher BMI, but only in those with shortest sleep duration. CONCLUSIONS: Both poor sleep and increasing screen time (including television viewing, smart-phone use, internet use or video-gaming) appear to impact BMI in children with obesity, with a particular detrimental effect of television viewing in those who sleep less. Efforts to improve sleep time and quality in children may minimise negative effects of screen time on increasing BMI and should be included in public health strategies to combat obesity in childhood.

Chylothorax following paediatric cardiac surgery: a case-control study.

OBJECTIVES: The aims of this study were to investigate risk factors for the development of postoperative chylothorax following paediatric congenital heart surgery and to investigate the impact of a management guideline on management strategies and patient outcome. METHODS: All patients with chylothorax following cardiac surgery at the Royal Children's Hospital, Melbourne, over a 48-month period beginning in January 2008 were identified. A control group, matched for age, date of surgery, and sex, was identified. To investigate potential risk factors, univariable and multivariable logistic regression models were constructed with paired analysis. To examine the effect of a standardised management protocol, data before and after the implementation of the guideline were compared. RESULTS: In total, 121 cases of chylothorax were identified, with 121 controls, matched for age at surgery, date of surgery, and sex. The incidence of chylothorax was 5.23%. Increasing surgical complexity (univariable OR 0.17 for the least complex versus the most complex group, p=0.02), closed-heart surgeries (OR 0.07 for open versus closed, p<0.001), and redo chest incisions (OR 10.0 for redo versus virgin, p<0.001) were significantly associated with chylothorax. The standardised management protocol had no significant impact on either drainage duration or management strategy. CONCLUSIONS: We have replicated the previously reported association between surgical complexity and chylothorax risk, and have shown, for the first time, that redo chest openings are also associated with a significantly increased risk. The implementation of a standardised management protocol in our institution did not result in a significant change in either chylothorax drainage duration or management strategy.

The use, appropriateness and outcomes of outpatient parenteral antimicrobial therapy.

OBJECTIVE: Outpatient parenteral antimicrobial therapy (OPAT) is increasingly used to treat children at home, but studies in children are scarce. We aimed to describe the use, appropriateness and outcomes of OPAT in children. DESIGN: This was a 12-month prospective observational study. SETTING: The hospital-in-the-home programme of The Royal Children's Hospital Melbourne. PATIENTS: All patients receiving OPAT. INTERVENTIONS: Data were collected including demographics, diagnosis, type of venous access and antibiotic choice. MAIN OUTCOME MEASURES: Length of stay, adverse events, readmission rate and appropriateness of antibiotic use. RESULTS: 228 patients received OPAT in 251 episodes. The median age was 7.4 years (range 1 week to 21 years), with 22 patients (10%) under 1 year. The most frequent diagnoses were exacerbation of cystic fibrosis (17%), urinary tract infection (12%) and cellulitis (9%). Most patients were transferred from the ward, but 18% were transferred directly from the emergency department, the majority with skin and soft-tissue infection (66%). Venous access was most commonly peripherally inserted central catheter (29%) and peripheral cannula (29%). 309 parenteral antibiotics were prescribed, most frequently ceftriaxone (28%) and gentamicin (19%). The majority of antibiotics (72%) were prescribed appropriately. However, 6% were deemed an inappropriate choice for the indication and 26% had inappropriate dose or duration. The incidence of central line-associated bloodstream infections was 0.9%. The unplanned readmission rate was 4%, with low rates of OPAT-related adverse events. Three children (1%) had an inadequate clinical response. CONCLUSIONS: OPAT is a safe and effective way of providing antibiotics to children. Despite high rates of appropriate antibiotic use, improvements can still be made.

Kawasaki disease--the importance of prompt recognition and early referral.

BACKGROUND: Kawasaki disease is an acute, febrile vasculitis of childhood that affects medium sized arteries, particularly the coronary arteries. Consequently, it is the leading cause of paediatric-acquired heart disease in developed countries. It is important to have a high index of suspicion for Kawasaki disease in any child with prolonged fever of unknown origin and to refer to a paediatric facility promptly, as timely treatment reduces coronary artery damage. OBJECTIVE: To provide an evidence based review that will help guide the safe and timely recognition, referral and management of typical and incomplete Kawasaki disease. DISCUSSION: Kawasaki disease is most common in children aged 6 months to 4 years. A high index of suspicion is needed to consider the diagnosis. There are specific diagnostic criteria, though incomplete Kawasaki disease may occur where the child does not meet all diagnostic criteria. There may be co-existing illnesses, which make the diagnosis more difficult. Persistent fever, skin manifestations and extreme irritability may be some cues to consider the diagnosis. If there is strong clinical suspicion the child should be referred, as early treatment significantly decreases the risk of long term cardiac artery damage.