Research has shown that cardiac complications can occur in people with SMA, including various heart muscle and structural issues. Some studies have found evidence of cardiomyopathies (problems with heart muscle tissue) and other cardiac conditions in SMA patients, even before muscle weakness symptoms appear.
Here are some Show Full Answer
Research has shown that cardiac complications can occur in people with SMA, including various heart muscle and structural issues. Some studies have found evidence of cardiomyopathies (problems with heart muscle tissue) and other cardiac conditions in SMA patients, even before muscle weakness symptoms appear.
Here are some of the heart-related conditions that have been observed in people with SMA:
• Cardiomyopathies
• Structural heart defects
• Valve disorders
• Irregular heartbeats (arrhythmias) However, it's worth noting that there are some conflicting findings regarding heart problems in SMA Type 3 specifically. While some research has found associations between SMA Type 3 and heart rhythm issues like arrhythmia, other more recent studies suggest that people with SMA Type 3 may not typically present with heart dysfunction. Any cardiac symptoms may be secondary to respiratory issues that can occur with SMA.
It would be best to discuss any specific heart findings with your son's healthcare team, as they can provide personalized guidance based on his individual situation.
September 2, 2025
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