Infants with<unk><unk>  are managed with supportive care. This means treating or monitoring the symptoms that can occur from this disease. For example, avoiding sunlight so that the infant's rash won't worsen. Many of the manifestations are transient, but once complete heart block occurs, it is irreversible. Heart block can be managed in utero if diagnosed during pregnancy. Infants born to mothers with anti-Ro/SSA and anti-La/SSB should have an ECG performed to check for heart abnormalities if none were seen while in the uterus. In utero Fetal heart block treatment varies based on the degree. First degree heart block is usually treated with glucocorticoids, but it can also reverse on its own. As of right now, treatment guidelines for first-degree heart block is controversial due to lack of evidence. Second degree heart block commonly progresses to complete heart block. Second degree heart block can also reverse on its own. Treatment includes fluorinated glucocorticoids and immunoglobulin therapy. Third degree heart block is irreversible, and many treatments have been attempted without success. Management is mainly expectant. Early delivery should be avoided unless other complications arise. In third degree heart block, if the ventricular heart rate drops below 50-55 beats per minute, maternal beta-antagonists can be given. Glucocorticoids and immunoglobulin therapy can be used for endocardial fibroelastosis, but effectiveness is still unclear.
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