You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In Peripaum cardiomyopathy, cardiac failure can develop anytime during and explain in detail?
Diagnostic criteria for peripaum cardiomyopathy: Development of cardiac failure in the last month of pregnancy or within 5 months after deliveryThe absence of an identifiable cause for the cardiac failure, The absence of recognizable hea disease prior to the last month of pregnancy, and Left ventricular systolic dysfunction demonstrated by classic echocardiographic criteria, such as depressed ejection fraction or fractional shoening along with a dilated left ventricle (Ref: William's Obstetrics; 25th edition)