Can cardiomyopathy cause nausea and taccycardia?

It can not classic: Nausea and tachycardia are not classic symptoms for a cardiomyopathy by themselves, usually patient with cardiomyopathy have shortness of breath, fatigue, difficulty breathing with exertion, and leg swelling in addition to above.

Various causes: Cardiomyopathy is a generic term for abnormal heart muscle. It can be caused by infections, poisons, genetics, and physiologic causes. There are both weak heart and 'strong heart' cardiomyopathies. The cause of someone's cardiomyopathy requires more information than the term cardiomyopathy. Tachycardia and nausea are not unusual with cardiomyopathies.

Yes : Need details but yes. Cardiomyopathy (heart muscle weakness) can cause tachycardia, and tachycardia can cause cmp. Nausea can come from many things but with cardiomyopathy it could mean fluid is backing up from the heart to the liver and belly (usually with leg swelling too). The doctor might see signs that the situation could respond to an increase in the dose of diuretics.