首页>
外国专利>
Method and apparatus for determining patient lung pressure, compliance and resistance
Method and apparatus for determining patient lung pressure, compliance and resistance
展开▼
机译:确定患者肺压,顺应性和抵抗力的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and appartus for determining patient lung pressure, compliance and resistance, for use in conjunction with a respirator system of the compensated-volume type wherein a predetermined volume of gas is delivered to the patient in each breathing cycle. The method and apparatus of the invention determine both the system pressure at the point of delivery to the patient and the patient lung pressure, both at the end of the inspiration phase of the breathing cycle, and utilize these values, together with a compensated volume signal, to compute the values of patient compliance and resistance. Control circuitry, actuated periodically or on demand, substitutes an enforced plateau period following inspiration, to allow the system pressure to fall to the value of lung pressure which is obtained at the end of the inspiration phase, thereby permitting the measurement of lung pressure by sampling system pressure at the end of the plateau period. The control circuitry also controls analog-to-digital converters which convert the computed values of pressure, compliance and resistance for display in a digital display device.
展开▼