Loss: Using hybrid splitters / hybrid dividers / hybrid combiners, much less power is lost than if a resistive function had been used. When used as a splitter or divider the main level reduction is caused by the action of dividing the power between several ports.
Most scientific study has focused on ANP and BNP. Measurement of BNP helps doctors diagnose and treat congestive heart failure. In this condition, the heart is unable to pump blood efficiently, and the heart chambers swell with blood. As the heart cells stretch, they produce extra BNP, which pours into the bloodstream. By measuring blood levels of BNP, doctors can spot signs of congestive heart failure in its early stages, when it may be hard to distinguish from other disorders. A normal BNP level is about 98% accurate in ruling out heart failure.
Your doctor will call them B-type natriuretic peptide (BNP) and N-terminal-pro-BNP (NT-pro-BNP). Levels of both in your blood go up when your heart failure gets worse and go down when it gets better. A test called a BNP blood test measures those two important levels. Itâs able to spot heart failure more than 80% of the time. Why Is a BNP Blood Test Needed? BNP levels help your doctor figure out if you have heart failure or something else that has similar symptoms such as shortness of breath. The test also shows if your heart failure has worsened.