Investigation in Pregnancy Associate Cardiomyopathy

Inclusion Criteria: * Patient of 16 years of age or older * Diagnosis of peripartum cardiomyopathy * Presentation for enrollment no earlier than one month pre-term and no later than two months post partum. * LVEF less than OR equal to 0.45 by echocardiogram Additional inclusion criteria for MRI substudy: * Must be post partum * Participant is not breast feeding or is willing to forego breast feeding for 24 hours post gadolinium. Exclusion Criteria: * Previous diagnosis of cardiomyopathy, valvular disease or complex congenital heart disease * Evidence of CAD (\>50% stenosis of major epicardial vessel or positive non-invasive stress test) * Previous cardiac transplant * Chemotherapy or chest radiation within 5 years of enrollment * Evidence of ongoing bacterial septicemia (positive blood cultures) * Medical, social, or psychiatric condition which limit the ability to comply with follow-up (Example: alcohol or drug abuse) Additional Exclusion for MRI Substudy * GFR \< 30mL/1.7 m2 by MDRD equation (http://www.kidney.org/professionals/kdogi/gfr\_calculator.cfm) * Currently breast feeding or unwilling to forego for 24 hour period post gadolinium * Implanted devices (cochlear implants, pacemakers, defibrillators, infusion pumps, nerve stimulators, etc) * Cerebral aneurysm clips * Swan Ganz catheter or intra aortic balloon pump * Ocular metal or metallic splinters in the eye * Pregnant women * Metal shrapnel or bullet * Allergy to Gadolinium