|It is a clinical condition in which heart is not able to pump adequately to maintain blood flow to meet the requirement of body. The foremost cause of heart failure is coronary artery diseases, myocardial infarction, high blood pressure and atrial fibrillation etc. common sign and symptoms are increased rate of breathing, initially rales can be hear from lung bases or pulmonary edema, and wheezing etc.Scholarly peer review is the process of subjecting an author'sscholarlywork, research, orÂ ideasÂ to the scrutiny of others who areÂ expertsÂ in the same field, before a paper describing this work is published in a journal. The work may be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given (narrowly defined) field, who are qualified and able to perform reasonably impartial review.