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  • Hindawi Limited  (2)
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  • Hindawi Limited  (2)
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  • 1
    In: ISRN Pharmacology, Hindawi Limited, Vol. 2012 ( 2012-03-05), p. 1-4
    Abstract: Background . Although stimulants have long been touted as treatments for attention deficit disorder with or without hyperactivity (ADHD), in recent years, increasing concerns have been raised about the cardiovascular safety of these medications. We aimed to prove if measurements of autonomic function with time domain analysis of heart rate variability (HRV) in 24-hour Holter ECG are useful to predict the risk of sudden cardiac death in ADHD children and adolescents. Methods . We analysed HRV obtained from children with the diagnosis of ADHD prior to ( N = 12 ) or during medical therapy ( N = 19 ) with methylphenidate (MPH), aged 10.8 ± 2.0 years (mean ± SD), who were referred to our outpatient Paediatric Cardiology Clinic to rule out heart defect. As a control group, we compared the HRV data of 19 age-matched healthy children without heart defect. Results . Average HRV parameters from 24-hour ECG in the ADHD children prior to MPH showed significant lower values compared to healthy children with respect to rMSSD ( 26 ± 4  ms versus 44 ± 10  ms, P ≤ 0.0001 ) and pNN50 ( 6.5 ± 2.7 % versus 21.5 ± 9.0 % , P ≤ 0.0001 ). These values improved in MPH-treated children with ADHD (RMSSD: 36 ± 8  ms; pNN50: 14.2 ± 6.9 % ). Conclusion . Children who suffer from ADHD show significant changes in HRV that predominantly reflects diminished vagal tone, a well-known risk factor of sudden cardiac death in adults. In our pilot study, MPH treatment improved HRV.
    Type of Medium: Online Resource
    ISSN: 2090-5173
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2012
    detail.hit.zdb_id: 2612996-6
    SSG: 15,3
    Location Call Number Limitation Availability
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  • 2
    Online Resource
    Online Resource
    Hindawi Limited ; 2018
    In:  International Journal of Pediatrics Vol. 2018 ( 2018), p. 1-5
    In: International Journal of Pediatrics, Hindawi Limited, Vol. 2018 ( 2018), p. 1-5
    Abstract: Obese children and adolescents are at high risk of developing cardiovascular diseases later in life. We hypothesized that cardiovascular prophylaxis with omega-3 fatty acids could benefit them. In our study, 20 children and adolescents (mean body mass index percentile: 99.1; mean age: 11.0 years) underwent two ambulatory 24 h Holter electrocardiography (ECG) recordings (before and after at least 3 months of omega-3 fatty acid supplementation). Time domain heart rate variability (HRV) and heart rate (HR) were examined for these patients. As a control, we used 24 h Holter ECG recordings of 94 nonobese children and adolescents. Time domain HRV parameters, which are indicators of vagal stimulation, were significantly lower in obese patients than in healthy controls, but HR was higher (standard deviation of the normal-to-normal [SDNN] interbeat intervals: −34.02%; root mean square of successive differences [RMSSD] between normal heartbeats: −40.66%; percentage of consecutive RR intervals [pNN50]: −60.24%; HR: +13.37%). After omega-3 fatty acid supplementation, time domain HRV parameters and HR of obese patients were similar to the values of healthy controls (SDNN interbeat intervals: −21.73%; RMSSD: −19.56%; pNN50: −25.59%; HR: +3.94%). Therefore, omega-3 fatty acid supplementation may be used for cardiovascular prophylaxis in obese children and adolescents.
    Type of Medium: Online Resource
    ISSN: 1687-9740 , 1687-9759
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2018
    detail.hit.zdb_id: 2495026-9
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