Penicillin can prevent progression of latent rheumatic heart disease in children

A regular, affordable antibiotic treatment significantly reduced the risk of underlying rheumatic heart disease progression in children and adolescents, according to a new study.

The research, led by the Murdoch Children’s Research Institute (MCRI), Cincinnati Children’s Hospital Medical Center, Uganda Heart Institute and the Children’s National Hospital in Washington, also showed that early screening was critical in preventing serious rheumatic heart disease progression and death in young children.

Rheumatic heart disease affects 40.5 million people globally and causes at least 306,000 deaths every year. The chronic disease is caused by damage to the valves of the heart, following a case of Strep throat.

Cincinnati Children’s Hospital Medical Center Associate Professor Andrea Beaton said that until this study, it was unknown if antibiotics were effective at preventing the progression of latent rheumatic heart disease.

The trial is the first contemporary randomized controlled trial in rheumatic heart disease. The results are incredibly important on their own, but also demonstrate that high-quality clinical trials are feasible to address this neglected cardiovascular disease.”

Andrea Beaton, Associate Professor, Cincinnati Children’s Hospital Medical Center

The trial involved 818 Ugandan children aged 5-17 years with latent rheumatic heart disease. The participants either received four-weekly injections of penicillin for two years, or no treatment. All underwent echocardiography screening, where ultrasound waves produce images of the heart, at the start and end of the trial.

The findings from the screenings, published in the New England Journal of Medicine, reported just three (0.8 per cent) participants who received penicillin experienced latent rheumatic heart disease progression, compared to 33 (8.3 per cent) who didn’t receive the treatment.

MCRI’s Dr Daniel Engelman said the results showed a significant reduction in disease development and was more substantial than what was predicated.

“The results suggest that for every 13 children with latent disease who receive treatment for two years, one child will be prevented from developing more severe disease. As a preventative strategy for a severe, chronic disease, this is a very important finding,” he said.

MCRI Professor Andrew Steer said screening for latent rheumatic heart disease was critical to stop progression because heart valve damage was largely untreatable.

“Children with latent rheumatic heart disease have no symptoms and we cannot detect the mild heart valve changes clinically,” he said.

“Currently, most patients are diagnosed when the disease is advanced, and complications have already developed. This late diagnosis is associated with a high death rate at a young age, in part due to the missed opportunity to benefit from preventative antibiotic treatment. If patients can be identified early, there is an opportunity for intervention and improved health outcomes.”

Uganda Heart Institute Dr Emmy Okello said the Ugandan government should strengthen programs that promote screening of rheumatic heart disease and the availability of penicillin.

In 2018 Uganda supported the World Health Organization’s resolution to make the condition a global priority.

“Our study found a cheap and easily available penicillin can prevent progression of latent rheumatic heart disease into more severe, irreversible valve damage that is commonly seen in our hospitals with little or no access to valve surgery,” Dr Okello said.

Source:

Murdoch Childrens Research Institute

Journal reference:

Beaton, A., et al. (2021) Secondary Antibiotic Prophylaxis for Latent Rheumatic Heart Disease. New England Journal of Medicine. doi.org/10.1056/NEJMoa2102074.

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