Leg Fluid Shift in Patients With Chronic Heart Failure and Obstructive or Central Sleep Apnea

Multi Frequency Bioimpedance Analysis (mfBIA) uses very small electric current at different frequencies (5, 50, 100 kHz) to measure the resistance and reactance of the entire body and different segmental body compartiments. With a special software total body fluid can be calculated. By analyzing raw data at different frequencies a detailed view on body and segments fluid distribution is possible.

Sleep is digital recorded by using PSG/PG in hospital and manually analyzed by physicians according to current AASM guidelines.

CBGA is a less invasive method to gain arterial blood like gas samples without the punctation of an artery. After inducing a good capillary perfusion, capillary blood is taken by a small punctation of the tip of one ear. The sample is automatically analysed in a blood gas analyzer.

A tilting table offers the opportunity to turn a study subject automatically from vertical into horizontal position and back. By using non-invasive monitoring technique, hemodynamic parameters are recorded permanently.