Review of \u3cem\u3eHuman Rights and Adolescence\u3c/em\u3e. Jacqueline Bhabha, Ed. Reviewed by David Tobis

Jacqueline Bhabha, Ed., Human Rights and Adolescence. University of Pennsylvania Press (2014), 376 pages, $69.95 (hardcover)

Review of \u3cem\u3eCreating Positive Systems of Child and Family Welfare: Congruence with the Everyday Lives of Children and Parents\u3c/em\u3e. Gary Cameron, Marshall Fine, Sarah Maiter, Karen Frensch, and Nancy Freymond (Eds.). Reviewed by David Tobis.

Gary Cameron, Marshall Fine, Sarah Maiter, Karen Frensch, and Nancy Freymond (Eds.), Creating Positive Systems of Child and Family Welfare: Congruence with the Everyday Lives of Children and Parents. University of Toronto Press, (2013), 352 pages, $56 cloth,$27.96 paperback

Mechanisms for Support: A Realist Evaluation of Peer Parental Advocacy in England

International research shows that although parents perceive the child protection system to be stigmatising and authoritarian, peer parental advocacy (PPA) programmes have a positive impact on improving complex relationships between parents and professionals. PPA programmes enable parents with lived experience of child protection processes to support other parents to navigate the system. As an emerging area of policy interest, research investigating the role of PPA in empowering parents to participate meaningfully in decision-making is crucial to developing collaborative approaches within child protection social work. This realist-informed study considered how a newly implemented PPA programme supported parents in two English Local Authorities. Our findings highlight the unique role peer advocates can play as a resource to influence decision-making, power relations and working relationships between professionals and parents. This article presents our final programme theory, which identifies four key mechanisms that support perceived effectiveness in PPA implementation: active engagement, effective communication, facilitating trust and adequate support for advocates. These findings highlight how PPA programmes in these Local Authorities were valued and begin to build a picture of how further advocacy programmes can be explored throughout the UK

Comparison of DFE and MLSE Receiver Performance on HF Channels

Data communication at rates near or above 2 kbits/s on 3 kHz-bandwidth HF radio channels is subject to impairment from severe linear dispersion, rapid channel time variation, and severe fading. In this investigation, recorded 2.4 kbit/s QPSK signals received from HF channels were processed to extract a time-varying estimate of the channel impulse response. From the estimated channel impulse responses, performance-related parameters were computed for ideal matched filter reception, maximum-likelihood sequence-estimation (MLSE), and decision feedback equalization (DFE). The results indicated that the simpler DFE receiver suffered only a small theoretical performance degradation relative to the more complex MLSE receiver. Other HF channel impulse response statistics were also obtained to shed light on equalization and filter adaptation techniques

Coronary Artery Screening by Electron Beam Computed Tomography

Coronary calcium as detected by electron beam computed tomography always signifies at least some atherosclerosis, appears to be correlated with coronary risk factors, cardiac history, and overall angiographic severity of disease, but is inconsistently related to degree of atherosclerotic lesion stenosis in a given artery. Increasing evidence, however, suggests an association between coronary artery calcium, atherosclerosis, and coronary risk. But atherosclerosis is a very common condition, its prevalence increasing with age. No fully validated method for determining the quantity of coronary calcium is available, and we do not know whether the amount of calcium is a consistently accurate reflection of the amount of atherosclerosis or whether the amount of atherosclerosis reflects the degree of risk. Furthermore, the prognostic significance of coronary calcium in any given atherosclerotic lesion is not yet established. What is clear from cohort studies, however, is that at least three quarters of asymptomatic individuals, at least half of whom would have "positive" coronary calcium electron beam computed tomographic scans, will live for at least 10 years without cardiac problems of any kind. Investigation is needed to determine whether medical intervention may impact the clinical outcome of the rest of those identified with a positive scan but destined to suffer future clinical events. Despite lack of validation, this test has widespread appeal, both to the public as a means of being able to find out the condition of their coronary arteries "without injections or dye" and to hospitals and private medical groups who view this both as an innovation in cardiovascular diagnosis and as a potentially profitable diagnostic procedure.(ABSTRACT TRUNCATED AT 250 WORDS

Five-year experience with percutaneous closure of patent foramen ovale.

Patent foramen ovale (PFO) has been implicated in the pathogenesis of cryptogenic stroke, arterial desaturation, decompression illness, and migraine headache (MH). This study evaluated the safety of percutaneous transcatheter PFO closure in patients with cryptogenic stroke, transient ischemic attack, or arterial desaturation. Additionally, symptomatic reduction in MH was determined after interatrial shunt closure. Of the 252 patients referred to the University of California, Los Angeles, with PFO, 131 underwent closure of the interatrial communication with a CardioSEAL (n = 30) or Amplatzer (n = 101) device. PFO morphology was evaluated with transesophageal echocardiography. Follow-up was conducted at 1 to 2 months with echocardiography, with clinical assessment annually thereafter. At an average follow-up of 30 months, there was no recurrence of any thromboembolic event (transient ischemic attack, stroke, or peripheral). There was a reduction in MH, defined as the complete resolution of headache or a >50% reduction in the number of headache days, in 85% of patients after PFO closure. Temporary problems after device implantation, including chest discomfort and palpitations, were reported in 23% of patients and occurred more frequently in patients with nickel hypersensitivity (p <0.05). In conclusion, transcatheter PFO closure is an effective and safe therapeutic modality in the prevention of thromboembolic events and MH associated with interatrial shunting in patients who present with cryptogenic stroke. Pending randomized, controlled trials are necessary to determine if this invasive approach is preferable to medical therapy for the prevention of recurrent stroke or as primary treatment for patients with MH

Five-year experience with percutaneous closure of patent foramen ovale.

Patent foramen ovale (PFO) has been implicated in the pathogenesis of cryptogenic stroke, arterial desaturation, decompression illness, and migraine headache (MH). This study evaluated the safety of percutaneous transcatheter PFO closure in patients with cryptogenic stroke, transient ischemic attack, or arterial desaturation. Additionally, symptomatic reduction in MH was determined after interatrial shunt closure. Of the 252 patients referred to the University of California, Los Angeles, with PFO, 131 underwent closure of the interatrial communication with a CardioSEAL (n = 30) or Amplatzer (n = 101) device. PFO morphology was evaluated with transesophageal echocardiography. Follow-up was conducted at 1 to 2 months with echocardiography, with clinical assessment annually thereafter. At an average follow-up of 30 months, there was no recurrence of any thromboembolic event (transient ischemic attack, stroke, or peripheral). There was a reduction in MH, defined as the complete resolution of headache or a >50% reduction in the number of headache days, in 85% of patients after PFO closure. Temporary problems after device implantation, including chest discomfort and palpitations, were reported in 23% of patients and occurred more frequently in patients with nickel hypersensitivity (p <0.05). In conclusion, transcatheter PFO closure is an effective and safe therapeutic modality in the prevention of thromboembolic events and MH associated with interatrial shunting in patients who present with cryptogenic stroke. Pending randomized, controlled trials are necessary to determine if this invasive approach is preferable to medical therapy for the prevention of recurrent stroke or as primary treatment for patients with MH