Hypoplastic Left Heart Syndrome: A Review.

Hypoplastic left heart syndrome is a rare and poorly understood congenital disorder featuring a univentricular myocardium, invariably resulting in early childhood death if left untreated. The process to palliate this congenital cardiomyopathy is of high complexity and may include invasive interventions in the first week of life. The preferred treatment strategy involves a staged correction with 3 surgical procedures at different points in time. The Norwood procedure is usually performed within the first weeks of life and aims to increase systemic circulation and relieve pulmonary vascular pressure. This procedure is followed by the bidirectional Glenn and the Fontan procedures in later life, which offer to decrease stress in the ventricular chamber. The prognosis of children with this disease has greatly improved in the past decades; however, it is still largely driven by multiple modifiable and nonmodifiable variables. Novel and clever alternatives have been proposed to improve the survival and neurodevelopment of these patients, although they are not used as standard of care in all centers. The neurodevelopmental outcomes among these patients have received particular attention in the last decade in light to improve this very limiting associated comorbidity that compromises quality of life.

Premature adult mortality from non-communicable diseases (NCD) in three middle-income countries: do NCD programmes matter?

BACKGROUND In many middle-income countries, there is limited data available to evaluate the effectiveness of non-communicable disease (NCD) programmes. Since 1970, three neighbouring middle-income countries-Argentina, Chile and Uruguay-have undergone health sector reforms and reorganized their NCD programmes. In this paper, we explore whether data on premature adult mortality can be used to gauge the effectiveness of these programmes. METHODS We describe NCD programmes and examine mortality trends for the years 1970-2005 among adults aged 15-59 years. We contrast mortality trends from all-NCD to mortality trends from NCD that are avoidable through timely and effective medical care. The assumption is that if NCD programmes exert no effect, then all-NCD mortality and avoidable-NCD mortality will follow the same trend and avoidable-NCD mortality will not change at a faster pace. We used joinpoint regression analysis to describe the pace of change, measured as the geometric weighted average of the annual percentage change (AAPC). RESULTS Since the 1980s, all three countries have implemented NCD programmes delivered through health care, but only after the year 2000 did these countries begin to scale-up population-based NCD prevention programmes. In Argentina, all-NCD mortality is declining at a faster pace than avoidable-NCD mortality, while the contrary is occurring in Chile. In Uruguay, all-NCD mortality is declining at a faster pace than avoidable-NCD mortality among males, whereas among females, all-NCD mortality has stagnated while avoidable-NCD mortality continues to decline. CONCLUSION NCD interventions through health care have likely contributed to the reduction of premature NCD mortality in Chile and among women in Uruguay. In Argentina and among men in Uruguay, factors outside the health sector seem to have had a greater impact. This approach could be used in other countries to assess the effect of NCD interventions and raise key questions on programme effectiveness.

Risk factors for high-risk human papillomavirus infection and cofactors for high-grade cervical disease in Peru.

OBJECTIVE: To evaluate the association between potential risk factors for high-risk human papillomavirus (HR-HPV) infection and cofactors for cervical intraepithelial lesions grade 2 or worse (CIN2+) in women attending cervical screening in Amazonian Peru. MATERIALS AND METHODS: Participants completed a risk factor questionnaire before screening. High-risk human papillomavirus infection was determined by Hybrid Capture II. Logistic regression was used to evaluate associations between potential risk factors for HR-HPV infection and between cofactors and risk of CIN2+ among women with HR-HPV infection. RESULTS: Screening and questionnaires were completed by 5435 women aged 25 to 49 years. The prevalence of HR-HPV was 12.6% (95% confidence interval [CI], 11.8%-13.6%) and decreased by age. Early age at first sexual intercourse and several lifetime sexual partners increased the risk of having HR-HPV (age-adjusted odds ratio [AOR] of age at first sexual intercourse <18 vs ≥20, 1.5; 95% CI, 1.2-2.0; AOR of ≥5 lifetime sexual partners vs 1, 2.1; 95% CI, 1.4-3.2). Among women with HR-HPV infection, those with no schooling (AOR relative to 1-5 years of schooling, 3.2; 95% CI, 1.3-8.3) and those with parity ≥3 (AOR relative to parity <3, 2.6; 95% CI, 1.4-4.9) were at increased risk of CIN2+. The effect of parity was stronger for cancer (AOR of parity ≥3 vs <3, 8.3; 95% CI, 1.0-65.6). Further analysis showed that the association between parity and CIN2+ was restricted to women younger than 40. Most women (83%) had previously been screened. Sixty-four percent of CIN2+ cases detected in this study occurred in women who reported having had a Papanicolaou test in the previous 3 years. Only 4 of 20 cancers were detected in women never screened before. Having had a previous abnormal Papanicolaou test increased the risk of CIN2+ (OR, 16.1; 95% CI, 6.2-41.9). CONCLUSION: Among women with HR-HPV, high parity (in young women), no schooling, lack of good-quality screening and of adequate follow-up care are the main risk factors for high-grade cervical disease in Peru.

Continuity of care and its effect on prescription drug use among Medicare beneficiaries with hypertension.

BACKGROUND: Continuity of care is one of the pillars of primary care; yet, it is unclear whether having a regular physician influences the use of prescription drugs among the elderly. OBJECTIVE: To assess the effect of continuity of care on prescription drug use for Medicare beneficiaries with hypertension. METHODS: Medicare beneficiaries age 67 years and older were categorized in 3 groups according to the level of continuity of care experienced during the year preceding an initial diagnosis of hypertension. The group with the lowest level (poor continuity) was selected as control, and matched on previous use of health services, sociodemographic and clinical characteristics, using propensity scores, to the intermediate and high continuity groups. Fixed effect models examined the association of continuity of care to number of drugs classes, cost of drugs, use of thiazide diuretics, and adherence to treatment. RESULTS: There was no clear evidence that Medicare beneficiaries with greater continuity of care had increased adherence to antihypertensive drugs for most variables studied. The only major difference was that total number of classes of drugs purchased was 10% higher for the intermediate group, and 15% higher for the high Continuity of Care index group compared with the control group (P<0.05). CONCLUSION: A prior history of continuity of care may lead to purchasing more drugs overall but may not increase adherence to hypertension treatment among the elderly.

Using collaborative learning to improve diabetes care and outcomes: the VIDA project.

UNLABELLED: The prevalence of diabetes in Mexico among those 20-64 years of age has increased from 7.2% in 1993 to 10.7% in 2000. National population-based surveys in Mexico demonstrated that 50% of the total population with diabetes had blood glucose levels of 200mg/dl or higher. Thus, diabetes care has become one of the most important public health challenges in this country. The aim of the study was to improve the quality of diabetes care in primary health care centers using the chronic care model and the breakthrough series (BTS) collaborative methodology. METHODS: Ten public health centers in the cities of Xalapa and Veracruz were randomly selected to participate in the project. Five of the health centers were randomly assigned to receive the intervention (intervention group) and the other five followed usual care (usual care group). The intervention was evaluated by A1c test before and after the intervention in both groups of patients. Patients were followed for 18 months from November 2002 to May 2004. Results were adjusted for the clustering of patients within practices and baseline measure. RESULTS: The proportion of people with good glycemic control (A1c<7%) among those in the intervention group increased from 28% before the intervention to 39% after the intervention. The proportion of patients achieving three or more quality improvement goals increased from 16.6% to 69.7% (p<0.001) among the intervention group while the usual care group experienced a non-significant decrease from 12.4% to 5.9% (p=0.118). The focus on the primary care team and the participation of people with diabetes were strategic elements incorporated into the methodology, expected to ensure sustainability of continued improvement of health outcomes. CONCLUSIONS: The intervention introduced modifications to solve problems identified by health teams in their practice and improved process and outcome measures of quality diabetes care. Most of the actions were directed at four components of the chronic care model: self-management support, decision support, delivery system design, and clinical information systems.

Assessing participation of women in a cervical cancer screening program in Peru.

OBJECTIVE: To assess systemic and individual factors influencing participation of women in a screening program for cervical cancer. METHODS: In November 2000, a new cervical cancer screening program was introduced in the Region of San Martin, Peru. A total of 107 683 women, ages 25-49, were eligible for screening. This report covers the initial period from program inception through 31 October 2003. We used data from the program information system to identify systemic factors and individual characteristics influencing women's participation. We conducted a three-step analysis: we assessed systemic factors at the level of micronetworks or group of health centers, we estimated the odds of being a new user (never screened or not screened in the past 5 years) according to sociodemographic characteristics, and we assessed how women learned about the availability of screening services while controlling for influential factors identified in previous analyses. RESULTS: During the 3-year period, 36 759 eligible women attended screening services, for a participation rate of 32.3%. While attendance varied by area and time period, the program attracted 12 208 new users. Health care micronetworks with available static screening services had higher participation. New users were more likely than regular users to have less education and to report low use of family-planning services. All other factors being equal, they were also more likely than regular users to hear about screening services from a health care provider. CONCLUSION: In this setting, the presence of and contact with health services played a role in increasing the participation in screening of women not previously screened or not screened in the past 5 years.

Assessing participation of women in a cervical cancer screening program in Peru / Análisis de la participación de las mujeres en un programa de tamizaje de cáncer cervicouterino en Perú

OBJECTIVE: To assess systemic and individual factors influencing participation of women in a screening program for cervical cancer. METHODS: In November 2000, a new cervical cancer screening program was introduced in the Region of San Martin, Peru. A total of 107 683 women, ages 25-49, were eligible for screening. This report covers the initial period from program inception through 31 October 2003. We used data from the program information system to identify systemic factors and individual characteristics influencing women's participation. We conducted a three-step analysis: we assessed systemic factors at the level of micronetworks or group of health centers, we estimated the odds of being a new user (never screened or not screened in the past 5 years) according to sociodemographic characteristics, and we assessed how women learned about the availability of screening services while controlling for influential factors identified in previous analyses. RESULTS: During the 3-year period, 36 759 eligible women attended screening services, for a participation rate of 32.3 percent. While attendance varied by area and time period, the program attracted 12 208 new users. Health care micronetworks with available static screening services had higher participation. New users were more likely than regular users to have less education and to report low use of family-planning services. All other factors being equal, they were also more likely than regular users to hear about screening services from a health care provider. CONCLUSION: In this setting, the presence of and contact with health services played a role in increasing the participation in screening of women not previously screened or not screened in the past 5 years.

OBJETIVOS: Evaluar los factores sistémicos e individuales que influyen en la participación de las mujeres en un programa de tamizaje de cáncer cervicouterino. MÉTODOS: En noviembre de 2000 se implementó un nuevo programa de tamizaje de cáncer cervicouterino en la región de San Martín, Perú. En total, 107 683 mujeres de 25 a 49 años eran elegibles para el tamizaje. Este informe cubre el período inicial desde el establecimiento del programa hasta el 31 de octubre de 2003. Se utilizaron los datos del sistema de información del programa para identificar los factores sistémicos y las características individuales que influían en la participación de las mujeres. Se realizó un análisis en tres etapas: se evaluaron los factores sistémicos a nivel de las microrredes o grupos de centros de salud, se estimaron las probabilidades de ser una nueva usuaria (nunca tamizada o no tamizada en los últimos 5 años) según las características sociodemográficas y se evaluó la vía por la que las mujeres habían conocido de la disponibilidad de los servicios de tamizaje, controlado por factores de influencia identificados en análisis previos. RESULTADOS: En el período de tres años, 36 759 mujeres elegibles recibieron este servicio, para una tasa de participación de 32,3 por ciento. Aunque la asistencia varió según la zona y el momento, el programa atrajo a 12 208 nuevas usuarias. Las microrredes sanitarias con servicios de tamizaje estáticos tuvieron una mayor participación. Las nuevas usuarias tenían menor nivel educacional y utilizaban menos los servicios de planificación familiar que las mujeres que se habían realizado la prueba con regularidad. Sin diferencias en el resto de los factores, las nuevas usuarias habían oído sobre los servicios de tamizaje más frecuentemente de los trabajadores sanitarios que las usuarias habituales. CONCLUSIONES: En este escenario, la presencia de servicios de salud y el contacto con ellos influyeron en el aumento de la participación...

Navigating the health system: diabetes care in Georgia.

BACKGROUND: Effective delivery of diabetes care requires integration across specialist teams delivering recognized interventions, a reliable pharmaceutical supply, and promoting self-management. Drawing on a framework incorporating physical, human, intellectual and social resources, the paper examines how these challenges are managed in diabetes care in Georgia. METHODS: The rapid appraisal study triangulated data from interviews with users, providers and key informants from various institutions in four regions of Georgia; data on clinical and social outcomes from diabetes; legislative and policy documents. RESULTS: Diabetes-related mortality in Georgia is among the worst in Europe and Central Asia, in a context of conflict, economic collapse and weak institutions. Essential inputs for diabetes care are in place (free insulin, training for primary care physicians, financed package of care), but constraints within the system hamper the delivery of accessible and affordable care. There are no evidence-based guidelines on diabetes management, formal support and quality assurance. The scope of work of primary care practitioners is limited and they rarely diagnose and manage diabetes, which instead takes place within the vertical system. Access to insulin is problematic in rural areas. Obtaining syringes, supplies and hypoglycemic drugs and self-monitoring equipment remains difficult everywhere. Prevention and effective management of complications is limited, increasing adverse outcomes. Diagnosis and treatment of diabetes complications involve hospital admission and unaffordable out-of-pocket payments. The complexity of pathways to key stages of care obstructs continuous care. There are poor linkages between primary and secondary care and ineffective patient follow-up or monitoring of outcomes. There is little effort to promote self-care, adherence to drug regimens and appropriate lifestyle, or to empower patients. CONCLUSIONS: Improving diabetes outcomes will involve simplifying pathways to care and drugs, reassessing staff roles and insulin distribution systems. This would require better co-ordination of the inputs into the system and development of an integrated and patient-centred model.

Effectiveness of cryotherapy treatment for cervical intraepithelial neoplasia.

OBJECTIVE: To assess the effectiveness of cryotherapy treatment delivered by general practitioners in primary care settings, as part of a screen-and-treat approach for cervical cancer prevention. METHOD: Women aged between 25 and 49 years residing in San Martin, Peru, who were positive on visual inspection screening were treated, if eligible, with cryotherapy following biopsy. At 12 months post cryotherapy treatment the participants were evaluated for treatment effectiveness and examined by visual inspection and Papanicolaou test and, if positive, referred to a gynecologist for colposcopy and biopsy. RESULTS: Cryotherapy treatment was performed for 1398 women; of these, 531 (38%) had a histology result of cervical intraepithelial neoplasia (CIN). Cryotherapy effectively cured CIN in 418 (88%) women, including 49 (70%) women with a baseline diagnosis of CIN 3. CONCLUSION: Cryotherapy is an effective treatment for cervical precancerous lesions; it can easily be administered by general practitioners in primary care settings following visual inspection screening.

Cervical screening by visual inspection, HPV testing, liquid-based and conventional cytology in Amazonian Peru.

Cervical cancer is an important public health problem in many developing countries, where cytology screening has been ineffective. We compared four tests to identify the most appropriate for screening in countries with limited resources. Nineteen midwives screened 5,435 women with visual inspection (VIA) and collected cervical samples for HPV testing, liquid-based cytology (LBC) and conventional cytology (CC). If VIA was positive, a doctor performed magnified VIA. CC was read locally, LBC was read in Lima and HPV testing was done in London. Women with a positive screening test were offered colposcopy or cryotherapy (with biopsy). Inadequacy rates were 5% and 11% for LBC and CC respectively, and less than 0.1% for VIA and HPV. One thousand eight hundred eighty-one women (84% of 2,236) accepted colposcopy/cryotherapy: 79 had carcinoma in situ or cancer (CIS+), 27 had severe- and 42 moderate-dysplasia on histology. We estimated a further 6.5 cases of CIS+ in women without a biopsy. Sensitivity for CIS+ (specificity for less than moderate dysplasia) was 41.2% (76.7%) for VIA, 95.8% (89.3%) for HPV, 80.3% (83.7%) for LBC, and 42.5% (98.7%) for CC. Sensitivities for moderate dysplasia or worse were better for VIA (54.9%) and less favourable for HPV and cytology. In this setting, VIA and CC missed the majority of high-grade disease. Overall, HPV testing performed best. VIA gives immediate results, but will require investment in regular training and supervision. Further work is needed to determine whether screened-positive women should all be treated or triaged with a more specific test.

Population-based prevalence and age distribution of human papillomavirus among women in Santiago, Chile.

UNLABELLED: More than 18 types of human papillomavirus (HPV) are associated with cervical cancer, the relative importance of the HPV types may vary in different populations. OBJECTIVE: To investigate the types of HPV, age distribution, and risk factors for HPV infection in women from Santiago, Chile. METHODS: We interviewed and obtained two cervical specimens from a population-based random sample of 1,038 sexually active women (age range, 15-69 years). Specimens were tested for the presence of HPV DNA using a GP5+/6+ primer-mediated PCR and for cervical cytologic abnormalities by Papanicolaou smears. RESULTS: 122 women tested positive for HPV DNA, 87 with high risk types (HR), and 35 with low risks (LR) only. Standardized prevalence of HPV DNA was 14.0% [95% confidence interval (95% CI), 11.5-16.4]. HR HPV by age showed a J reverse curve, whereas LR HPV showed a U curve, both statistically significant in comparison with no effect or with a linear effect. We found 34 HPV types (13 HR and 21 LR); HPV 16, 56, 31, 58, 59, 18, and 52 accounted for 75.4% of HR infections. Thirty-four (3.6%) women had cytologic lesions. Main risk factor for HPV and for cytologic abnormalities was number of lifetime sexual partners, odds ratios for > or =3 versus 1 were 2.8 (95% CI, 1.6-5.0) and 3.8 (95% CI, 1.3-11.4), respectively. CONCLUSIONS: LR HPV presented a clear bimodal age pattern; HR HPV presented a J reverse curve. HPV prevalence was similar to that described in most Latin American countries.

A public health framework for chronic disease prevention and control.

Chronic noncommunicable diseases are leading causes of death and disability in many developing countries. Several low-income countries lack mortality and morbidity data and do not yet know their burden of noncommunicable diseases. Cost studies are scarce, but in middle-income countries such as those of Latin America and the Caribbean, the cost of illness not only represents much of the direct costs of medical care, but also has an impact on family disposable income. Studies have reported that in low-resource settings, given incomplete health coverage and partial insurance, out-of-pocket expenses are high. Persons with chronic conditions, in many instances, have to forego care because of their inability to pay. Poverty and chronic noncommunicable diseases have a two-way interaction. These conditions warrant attention from poverty-reduction programs. Evidence shows that to have an impact on the burden of chronic diseases, action must occur at three levels: population-wide policies, community activities, and health services. The latter includes both preventive services and appropriate care for persons with chronic conditions. A public health approach embodies a systems perspective, containing the continuum of prevention and control, from determinants to care. In this framework it is critical to identify and address interactions and interventions that connect between and among the three levels of action.