Evaluation of a Model-Based Hemodynamic Monitoring Method in a Porcine Study of Septic Shock

Table 1

List of identified parameters and corresponding measurements used to identify them for the simplified systemic, simplified pulmonary, and six-chamber models. Each line on the table represents a measurement/parameter pair, where the measurement on the line is used to directly identify the corresponding parameter. All the parameters in this table, except for the valve resistances, are uniquely identified for each set of measurements. The valve resistances are identified for each set of measurements and then averaged for a subject.

Model	Measurement		Identified parameter
	Name	Symbol	Name	Symbol
Systemic	Global end diastolic volume	GEDV	Left ventricular elastance	𝐸es,lvf
	Stroke volume	SV	Mitral valve resistance	𝑅mt
	Mean aortic pressure	MAP	Systemic vascular resistance	𝑅sys
	Aortic pulse pressure	PPao	Aortic elastance	𝐸ao
	Maximum ascending aortic gradient	𝑑𝑃ao,max/𝑑𝑡	Aortic valve resistance	𝑅av
	Mitral valve closure time	𝑡mt	Pulmonary vein pressure	𝑃pu
Pulmonary	Global end diastolic volume	GEDV	Right ventricular elastance	𝐸es,rvf
	Stroke volume	SV	Tricuspid valve resistance	𝑅tc
	Mean pulmonary artery pressure	MPAP	Pulmonary valve resistance	𝑅pul
	Pulmonary artery pulse pressure	PPpa	Pulmonary artery elastance	𝐸pa
	Maximum ascending pulmonary artery pressure	𝑑𝑃pa,max/𝑑𝑡	Pulmonary valve resistance	𝑅pv
	Tricuspid valve closure time	𝑡tc	Vena cava pressure	𝑃vc
6 chamber	Vena cava pressure (identified from systemic model)	𝑃vc	Vena cava elastance	𝐸vc
	Pulmonary vein pressure (identified from pulmonary model)	𝑃pu	Pulmonary vein elastance	𝐸pu