title: [The research and design of non-invasive cardiac output detector based on pulse graph theory].
abstract: This cardiac output detector uses AT89C52 as the core MCU, carries the pulse signal sampling from pulse sensor into the SCM after A/D conversion, and then figures out the cardiac output value and displays it on the LED. Software analysis works out the cardiac output value through five-point difference threshold for feature location of the pulse graph method theory. Experiment results show that the normal measured cardiac output is 5.411 L/min, the standard deviation of 0.873, while the catheter method as the gold standard of the mean 5.51 L/min, the standard deviation of 1.09. This system can meet the testing requirements of normal cardiac output. It is a non-invasive, convenient and new cardiac output measurement instrument with continuous testing, easy operation and low cost.
authors.affiliation: Inst. of Electronic Information, Hangzhou Electronic and Science University, China. smartchristine@163.com
authors.forename: Shanzhu
authors.initials: S
authors.lastname: Li
authors.forename: Xun
authors.initials: X
authors.lastname: Zhang
mesh_terms: D002302:Cardiac Output; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods; D011674:Pulse