Table 1.

Summary of Relevant Clinical Studies

Parameter	First Author, Journal (Year)	Reference	Sample Size	Correlation
ΔPCWP	Shandhi et al,3IEEE Trans Biomed Eng (2022)	Right heart catheterization	20 Patients with HF who were undergoing vasodilator challenge	R2 = 95%
Oxygen uptake	Shandhi et al,4J Card Fail (2020)	Cardiopulmonary exercise test	59 Patients with HF	R2 = 76%
Mean arterial pressure	Carek et al, under review (2020)	Radial arterial line	15 Intensive care unit patients	R2 = 88%
Stroke volume	Semiz et al,5IEEE J Biomed Health Inform (2021)	Transesophageal Doppler	12 Perioperative patients	R = 81%
ΔCardiac output	Inan et al,6Physiol Meas (2009)	Doppler echocardiography	9 Volunteers	R2 = 85%
ΔContractility	Ashouri et al,7Sensors (2016)	Impedance cardiography	17 Volunteers	R2 = 92%

HF = heart failure; PCWP = pulmonary capillary wedge pressure.