Ninety percent of the 3.4 million HIV-infected children live in sub-Saharan Africa. Their psychosocial well being is fundamental to establishing and maintaining successful treatment outcomes and overall quality of life. With the increased roll-out of antiretroviral treatment, HIV infection is shifting from a life-threatening to a chronic disease. However, even for paediatric patients enrolled in care and treatment, HIV can still be devastating due to the interaction of complex factors, particularly in the context of other household illness and overextended healthcare systems in sub-Saharan Africa. This article explores the negative effect of several interrelated HIV-specific factors on the psychosocial well being of HIV-infected children: disclosure, stigma and discrimination, and bereavement. However, drawing on clinical studies of resilience, it stresses the need to move beyond a focus on the individual as a full response to the needs of a sick child requires support for the individual child, caregiver-child dyads, extended families, communities, and institutions. This means providing early and progressive age appropriate interventions aimed at increasing the self-reliance and self-acceptance in children and their caregivers and promoting timely health-seeking behaviours. Critical barriers that cause poorer biomedical and psychosocial outcomes among children and caregiver must also be addressed as should the causes and consequences of stigma and associated gender and social norms. This article reviews interventions at different levels of the ecological model: individual-centred programs, family-centred interventions, programs that support or train healthcare providers, community interventions for HIV-infected children, and initiatives that improve the capacity of schools to provide more supportive environments for HIV-infected children. Although experience is increasing in approaches that address the psychosocial needs of vulnerable and HIV-infected children, there is still limited evidence demonstrating which interventions have positive effects on the well being of HIV-infected children. Interventions that improve the psychosocial well being of children living with HIV must be replicable in resource-limited settings, avoiding dependence on specialized staff for implementation. This paper advocates for combination approaches that strengthen the capacity of service providers, expand the availability of age appropriate and family-centred support and equip schools to be more protective and supportive of children living with HIV. The coordination of care with other community-based interventions is also needed to foster more supportive and less stigmatizing environments. To ensure effective, feasible, and scalable interventions, improving the evidence base to document improved outcomes and longer term impact as well as implementation of operational studies to document delivery approaches are needed.

Nitroprusside vasodilation at low doses alters PA hemodynamics in congestive heart failure primarily through changes in low-frequency impedance. In some patients, this effect is associated with decreased stroke output. At higher doses, favorable alterations in resistance, low- and high-frequency impedance, and wave reflections all contribute to increased forward flow and decreased power requirement per unit forward flow. These findings show that ventricular-vascular interaction is importantly affected by pulmonary vasodilation and that appreciation of pulsatile properties is required to understand the effects of pulmonary vasodilation on cardiac output.

This series introduces readers to the theory and practice of counselling and psychotherapy across a wide range of topic areas. The books will appeal to anyone wishing to use counselling and psychotherapeutic skills and will be particularly relevant to workers in health, education, social work and related settings. The books in this series are unusual in being rooted in psychodynamic and systemic ideas, yet being written at an accessible, readable and introductory level. Each text offers theoretical background and guidance for practice, with creative use of clinical examples.

Limited research and clinical attention has been paid to the experience of being an ill parent, so that parents are given little support in preparing for the effect their illness might have on their children. In this article, we explore how parents manage being a patient and a parent at the same time, focusing on three themes which have emerged: parental fears that illness renders them less fit to meet the needs of their children; dilemmas about balancing self-care with the care of others; and how the illness can evoke feelings that relate to previous trauma, influencing their responses to their children in the present. We highlight how these issues do not happen in isolation, but in the context of ongoing intimate, family relationships. We suggest that if they are not addressed, parents and children are left unprepared to meet the demands which illness poses. Finally, we examine the implications for clinical work in this area.

These data demonstrate that 1) increased pulmonary characteristic impedance, although a feature of mitral stenosis, is not exacerbated by the acute effects of increased distending pressure; 2) pacing tachycardia in mitral stenosis causes little change in the pulmonary impedance spectrum except at low frequencies, where decreased impedance lowers power requirements per unit flow; and 3) relief of mitral stenosis produces immediate improvement in low-frequency impedance and in hydraulic power requirements. These findings suggest that although characteristic impedance may be a measure of the long-term effects of pulmonary hypertension on the pulmonary circulation, acute increases and decreases in PA pressure produce effects on right ventricular load that are best described in terms of the low-frequency properties of the PA system. Improvement in low-frequency impedance diminishes hydraulic power requirements and thus reflects improved ventricular-vascular coupling, irrespective of distending PA pressure. Efforts to treat or prevent right heart failure in the presence of pulmonary hypertension should take account of the potential benefit of changes in low-frequency impedance characteristics of the pulmonary vascular bed.