The logic for extending the use of echocardiography beyond childhood to detect subclinical rheumatic heart disease

[Acute rheumatic carditis in Ivory Coast: changes in prevalence during the decade 2000-2009]

BACKGROUND

Rheumatic fever and acute rheumatic carditis (ARC), though now rare in developed countries, are the main cause of acquired heart disease in children and young adults and remain endemic in developing countries. This study aims to establish the current prevalence of ARC in Ivory Coast.

PATIENTS AND METHODS

A cross-sectional retrospective study was performed between January 2000 and December 2009 in the pediatric wards of the three university hospitals in Abidjan and in the Institute of Cardiology of Abidjan. It included all patients whose final diagnosis was ARC.

RESULTS

There were 126 patients of which 57.1% were female. The mean age was 15 ± 6.7 years (range: 4 to 28 years). The average annual prevalence was 12.6 cases, with two peaks observed during the years 2004 (27 cases) and 2005 (20 cases). The hospital prevalence of ARC in the 10-year period was 1.1‰ which is less than in previous decades. The principal presentation leading to discovery of the ARC was heart failure (68.9%). This symptom was due to significant valvular regurgitation with dilatation of the cardiac chambers observed in 65.9%. Mitral regurgitation was the main lesion observed (87.3%). Apart from the cases of isolated pericarditis and three cases of mild mitral regurgitation, all other patients were suffering from valvular lesions as a result of previous rheumatic fever.

CONCLUSION

A decrease in the hospital prevalence of ARC was observed. However the cases that were seen were diagnosed late and had a tendency to be severe.

The burden of antenatal heart disease in South Africa: a systematic review

Background

Maternal mortality in South Africa is rising, and heart conditions currently account for 41 per cent of indirect causes of deaths. Little is known about the burden of heart disease in pregnant South Africans.

Methods

We systematically reviewed the contemporary epidemiology and peripartum outcomes of heart disease in South African women attending antenatal care. Searches were performed in PubMed, ISI Web of Science, the EBSCO Africa-Wide database, the South African Union Catalogue, and the Current and Completed Research database (South Africa). References of included articles were also hand-searched. Studies reporting epidemiologic data on antenatal heart disease in South Africa were included. Data on morbidity and mortality were also collected.

Results

Seven studies were included in the systematic review. The prevalence of heart disease ranged from 123 to 943 per 100,000 deliveries, with a median prevalence of 616 per 100,000. Rheumatic valvular lesions were the commonest abnormalities, although cardiomyopathies were disproportionately high in comparison with other developing countries. Peripartum case-fatality rates were as high as 9.5 per cent in areas with limited access to care. The most frequent complications were pulmonary oedema, thromboembolism, and major bleeding with warfarin use. Perinatal mortality ranged from 8.9 to 23.8 per cent, whilst mitral lesions were associated with low birth weight. Meta-analysis could not be performed due to clinical and statistical heterogeneity of the included studies.

Conclusion

Approximately 0.6 per cent of pregnant South Africans have pre-existing cardiac abnormalities, with rheumatic lesions being the commonest. Maternal and perinatal morbidity and mortality continue to be very high. We conclude this review by summarising limitations of the current literature and recommending standard reporting criteria for future reports.

The worldwide epidemiology of acute rheumatic fever and rheumatic heart disease

Acute rheumatic fever (ARF) and rheumatic heart disease (RHD) are significant public health concerns around the world. Despite decreasing incidence, there is still a significant disease burden, especially in developing nations. This review provides background on the history of ARF, its pathology and treatment, and the current reported worldwide incidence of ARF and prevalence of RHD.

The resurgence of rheumatic fever in a developed country area: the role of echocardiography

OBJECTIVES

The annual incidence of ARF ranges from 5 to 51/100, 000 population worldwide in the 5- to 15-year age group. In the past, there was a decline in the incidence of ARF; however, focal outbreaks have been reported. This study evaluated the incidence of ARF in 2007-08 in a region of a developed country compared with the previous decade.

METHODS

A retrospective review of all admission records for ARF in Trieste between January 2007 and December 2008 was undertaken. The diagnosis of ARF was established by the Jones criteria according to the 1992 revision.

RESULTS

Between January 2007 and December 2008: 13 cases of ARF were recorded, 11 females and 2 males. The estimated incidence was 23 and 27/100, 000 population new cases each year, respectively, in the 5- to 15-year age group. Migratory polyarthritis occurred in 6/13, chorea in 7/13 and clinical carditis in 5/13 cases. Five out of 13 patients had only echocardiographic abnormalities, with no clinical cardiac manifestations. Another two patients did not fulfil diagnostic criteria for ARF, presenting with only three minor criteria, but they revealed silent carditis at echocardiography evaluation. During the follow-up, in one case the carditis receded and in the other it significantly improved.

CONCLUSIONS

Our experience underlines that ARF has not yet disappeared in industrialized countries. We observed a high incidence of chorea, always associated with mild carditis. Echocardiographic assessment should be routinely performed in all patients with suspected ARF in order to identify those subclinical cases of valvulitis that would otherwise pass undiagnosed without receiving proper prophylaxis.