What tests are needed for rheumatic fever?

Written by Yang Ya Meng

Rheumatology

Updated on September 16, 2024

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The examinations for rheumatic fever include laboratory tests and electrocardiograms, as well as imaging studies. Laboratory tests include indicators of streptococcal infection, commonly using throat swab bacterial cultures, which have a positivity rate of about 20% to 25%. They also include anti-streptolysin O tests, generally considered positive if the titer is above 1:400. Secondly, the tests include those for acute inflammatory response, common markers of which are elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP). Electrocardiograms help in detecting various arrhythmias, such as sinus tachycardia and prolonged PR interval. Echocardiography can be used to detect any abnormalities in the mitral valve of the heart.

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Written by Yang Ya Meng

Rheumatology

47sec

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Treatment of rheumatic fever with aspirin

Patients with rheumatic fever use aspirin primarily for its anti-inflammatory effects to reduce the inflammatory response. Aspirin also has analgesic properties that can be used to treat symptoms like joint pain associated with rheumatic fever. However, it is crucial to monitor patients taking aspirin for any gastrointestinal reactions, such as stomach pain or black stools. During the use of aspirin, it's important to be vigilant about these gastrointestinal symptoms. Additionally, medications that protect the stomach, such as pantoprazole which reduces stomach acid, can be used to prevent the side effects of aspirin. (Use medication under the guidance of a doctor.)

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Written by Yang Ya Meng

Rheumatology

57sec

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Rheumatic fever clinical symptoms

The clinical manifestations of rheumatic fever primarily include: Some patients may experience low fever and rashes, and about half of the patients may exhibit symptoms such as morning stiffness. The joint pain associated with rheumatic fever often occurs more frequently in the large joints of the lower limbs and is asymmetrical, but it can also affect small joints and central axis joints. It commonly presents as non-migratory arthritis. Secondly, patients with rheumatic fever may experience cardiac involvement, with the most common being heart valve disease, particularly mitral valve stenosis. Additionally, patients with rheumatic fever may also suffer from kidney involvement, often presenting with symptoms such as hematuria and proteinuria, which are typical clinical symptoms of rheumatism.

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Written by Yang Ya Meng

Rheumatology

52sec

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What foods should not be eaten with rheumatic fever?

Patients with rheumatoid fever should avoid the following three major categories of foods: The first category is vegetables, such as celery, coriander, leeks, seaweed, and mushrooms, which should be consumed in moderation. The second category includes meats like lamb, beef, and dog meat, which are very warming and nourishing and should be reduced in consumption. The third category includes seafood such as shrimp, crab, and sea cucumber, which are high in protein and should also be avoided. For patients with rheumatism, the general dietary principle is to follow a light diet, avoid spicy and dry-heat foods, and reduce greasy foods. For patients with rheumatic fever, it is particularly important during the acute phase to rest and avoid catching colds and infections.

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Written by Yang Ya Meng

Rheumatology

44sec

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How long will it take for rheumatic fever rash to heal?

Rheumatic fever rash generally improves after seven to ten days of treatment, but this is contingent upon completing a full course of antibiotics. This is because the rash is induced by a streptococcal infection. Therefore, to control the infection by streptococcus, the rash will begin to improve. Moreover, if the rash does not subside over time, it may also be considered to strengthen anti-inflammatory treatment with glucocorticoids and anti-allergy treatments to reduce the rash. Additionally, medications like loratadine dispersible tablets and compound glycyrrhizin can be added to help reduce the occurrence of rheumatic fever rash and accelerate its resolution.

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Written by Yang Ya Meng

Rheumatology

53sec

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Is the rheumatoid factor high in rheumatic fever?

Patients with rheumatic fever often do not have elevated rheumatoid factor levels, as rheumatic fever primarily follows a streptococcal infection. There is typically an increase in anti-streptolysin O antibodies, while rheumatoid factors are often negative. In addition to elevated anti-streptolysin O, patients with rheumatic fever may also experience valvular heart disease, most commonly mitral stenosis. Some patients may present with skin erythema and symptoms similar to chorea, which leads us to consider the possibility of rheumatic fever. The treatment of rheumatic fever primarily involves regular antibiotic therapy and continued administration of intramuscular benzathine penicillin for a period of time. (The use of medications should be under the guidance of a professional doctor.)