Fig. 8
Estimating RAC based on existing empirical models. Correlation between CO and HR (as a measure of stress-state) shows increased CO with increase in HR (a). Estimated values of mPAP for 15 subjects as a function of HR shows increase in mPAP with increased HR (b). Estimated RACest for different heart rates based on the empirical model and RACCMR for different heart rates measured with exercise-CMR stress test (c)