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.
BNP is a heart hormone (peptide) produced by the heart's pumping chambers when the heart can't supply the body with enough blood. BNP levels are high in patients with systolic dysfunction, and the worse the heart class, the higher the BNP level.t measures levels of BNP or B-type natriuretic peptide. Levels of this hormone are very high in people with acute heart failure. Doctors have often been wrong when faced with a person having CHF, calling it asthma, respiratory infection, pneumonia, or gallstones.