Although most women with HCM with minimal or mild symptoms tolerate pregnancy well, the risks associated with pregnancy include: 
Sudden death, particularly in patients with severe outflow obstruction or other risk factors for sudden cardiac death. Hemodynamic deterioration, particularly in those with moderate or severe symptoms before pregnancy.
How does hypertrophic cardiomyopathy in pregnancy relate to cardiac disease?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How does hypertrophic cardiomyopathy in pregnancy relate to cardiac disease? [/INST] \n Although most women with HCM with minimal or mild symptoms tolerate pregnancy well, the risks associated with pregnancy include: 
Sudden death, particularly in patients with severe outflow obstruction or other risk factors for sudden cardiac death. Hemodynamic deterioration, particularly in those with moderate or severe symptoms before pregnancy.</s>