The research and design of non-invasive cardiac output detector based on pulse graph theory / 中国医疗器械杂志
Chinese Journal of Medical Instrumentation
;
(6): 344-347, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-325986
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pulse
/
Cardiac Output
/
Methods
/
Monitoring, Physiologic
Language:
Chinese
Journal:
Chinese Journal of Medical Instrumentation
Year:
2011
Type:
Article
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