| 摘要 |
<p>A non invasive method and apparatus determines continuously the volume of oxygen delivered to the tissues using several infrared sensors. The various sensors are programmed to determine the haemoglobin level, the oxygen saturation of the blood, and the cardiac output. The product of these three factors with the known carrying capacity of haemoglobin gives the volume of oxygen delivered to the tissues in a unit time, with a microcomputer providing the necessary calculations. Other important cardiac factors are derived and all the results displayed on a screen. Non invasive blood pressure measurements, arterial haemoglobin and oxygen saturation levels are all obtained by methods which are known and are commercially available. Determination of cardiac output and other cardiac factors are described in PCT/AU2012/000854. Wave timing Cont ctility Rat Mean Arterial Pressure. Time Constant. Com liance 103 114 101 100 102 104 ave T. ontrac Rate M.A.P. Time C. Comp. ECG [ 11 11 Cardiac Output. Vascular Resist. Pre Ejection Ejection Period Period. 114 Hb Rate of change 112 110 111 [a] of pressure. Srk 1.r [b] of volume Volume Cardiac Index. en Delivery</p> |
