A hydraulic model of cardiovascular physiology and pathophysiology embedded into a computer-based teaching system for student training in laboratory courses

Abstract

Functional understanding of the different parts of the cardiovascular system is essential for an insight into pathomechanisms of numerous diseases. During training cardiovascular physiology, students and early-stage medical personnel should understand the role of different functional parameters for systolic and diastolic blood pressure, as well as for blood flow. The impact of isolated parameters can only be studied in models. Here physical hydraulic models are an advantage in which the students have a direct contact to the mechanical properties of the circulatory system. But these models are often difficult to handle. The aim of the present study was to develop a comprehensive model of the cardiovascular system, including a mechanical heart with valves, an elastic aorta, a more rigid peripheral artery system, a total peripheral resistance, and a venous reservoir representing the variable cardiac preload. This model allows one to vary systematically several functional parameters and to continuously record their impact on pressure and flow. This model is embedded into a computer-based teaching system (LabTutor) in which the students are guided through the handling of the model (as well as the systematic variation of parameters), and the measured data can be analyzed. This hybrid teaching system, which is routinely integrated in physiology laboratory courses of medical students, allows students to work with a complex hydraulic model of the cardiovascular system and to analyze systematically the impact of influencing variables (e.g., increased peripheral resistance or changed cardiac preload) as well as pathophysiological dysfunctions (e.g., reduced aortic compliance).

Computer Teaching System Based on Internet of Things and Machine Learning

“…In the whole teaching process, teachers can collect students' feedback through the Internet, so as to improve the basic process. At the same time, he can use his own thinking to intelligently guide the problems in the study [14].…”

“…At the same time, as shown in Figure 1, the meaning network has expanded its business application through the use of technology such as technology, knowledge technology, and general computing, which is called the third wave of growth of the global information industry after computers and information Internet. It is a continuation and extension of the application on the Internet [2]. e amount of data collected by network devices on the intranet will naturally increase over time.…”

The Do-It-Yourself Electrocardiogram

“…A hybrid teaching situation, in which students combine mathematical models with hands-on physiology, has been shown to provide a solid foundation in understanding the CVS. 1 We wanted to make sure that students obtained the same educational value as an in-person lab in which they obtain and analyze cardiac data from living tissue; in this case, their own hearts. Another goal of the lab was for students to engage and learn from each other during their weekly sessions.…”