Continuous measurement of systemic vascular resistance

Area of Science:

• Cardiovascular physiology
• Medical device integration
• Critical care monitoring

Background:

• Accurate and continuous monitoring of hemodynamic parameters is crucial in critical care.
• Systemic vascular resistance (SVR) is a key indicator of cardiovascular function.
• Existing methods for SVR assessment can be intermittent or complex.

Purpose of the Study:

• To develop a method for continuous derivation of systemic vascular resistance (SVR).
• To integrate standard patient monitors with advanced cardiac output monitoring systems.
• To evaluate the utility of continuous SVR monitoring in clinical settings.

Main Methods:

• Linked a Hewlett Packard M1166A-A66 patient monitor with Baxter Edwards Critical-Care Swan Ganz Intellicath and Vigilance systems.
• Utilized the integrated system to obtain continuous cardiac output and other necessary parameters.
• Calculated continuous systemic vascular resistance values.

Main Results:

• Successfully generated continuous systemic vascular resistance values.
• Observed significant changes in indexed systemic vascular resistance in six patient cases.
• Demonstrated the ability to track SVR changes in response to clinical interventions.

Conclusions:

• Continuous derivation of systemic vascular resistance is feasible with integrated monitoring systems.
• Continuous SVR monitoring offers potential as a diagnostic and research tool.
• This method allows for rapid and accurate assessment of patient therapeutic response.