|Heart failure can be caused due to many reasons like heart attack, coronary heart disease or high blood pressure. Heart failure occurs when the heart is unable to receive the proper supply of oxygen through blood. It may occur due to narrowing of heart arteries that pump blood to the heart or high blood pressure due to which the heart become weak and is unable to pump blood in a proper way causing heart failure.
The common symptoms of the heart failure include shortness of breath, fatigue and irregular rapid heartbeat as the heart is unable to pump the blood properly so the oxygen level decreases in the blood due to which the heart will beat rapidly to meet the oxygen demand hence there is shortness of breath. Heart failure can be chronic or acute. Heart failure can be diagnosed by Electrocardiogram, chest X-ray and blood tests. There is no treatment for the heart failure but symptoms can be controlled that help the person to live longer life.
Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results.
Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers. Literature reviews, by contrast, provide a summary of what the authors believe are the best and most relevant prior publications.
The concept of "review article" is separate from the concept of peer-reviewed literature. It is possible for a review to be peer-reviewed, and it is possible for a review to be non-peer-reviewed.