Body Composition and Resting Metabolic Rates in Adults with Cyanotic Congenital Heart Disease

This study focuses on adults with cyanotic congenital heart disease, a condition where the heart doesn't pump enough oxygen to the body due to a birth defect. These adults often have high levels of a substance called plasma proatrial natruretic peptide (proANP), which may cause chronic dehydration. This can lead to less oxygen reaching the tissues and cause shortness of breath during activity. The main goal of this study is to understand the body composition, specifically water and fat-free mass, and the resting metabolic rates in adults with this heart condition. The study aims to include adults with cyanotic congenital heart disease and healthy adults of the same age, gender, and body weight for comparison. The study's findings could help improve the care and management of this heart condition. During the study, participants will undergo several measurements to determine their body composition. This includes the amount of body water, fat, and lean tissue they have. The study will also measure how many calories the body uses when at rest. These measurements will provide valuable insights into the body's metabolism and hydration status in adults with cyanotic congenital heart disease. As this is an observational study, participants will not receive any treatment or intervention.