. Author manuscript; available in PMC: 2017 Mar 1.

Published in final edited form as: Circ Cardiovasc Imaging. 2016 Mar;9(3):10.1161/CIRCIMAGING.115.003754 e003754. doi: 10.1161/CIRCIMAGING.115.003754

Table 3.

Association of Left Atrial Reservoir Strain with Selected Invasive Hemodynamic and Cardiopulmonary Exercise Testing Measures on Linear Regression Analysis

Measure (dependent variable)	Unadjusted		Adjusted

	Beta-coefficient^** (95% CI)	P-value	Beta-coefficient^** (95% CI)	P-value
PA systolic pressure, mmHg	4.0 (1.6, 6.4)	0.001	3.3 (0.5–6.0)	0.019
Cardiac output, L/min	−0.64 (−0.99, −0.29)	<0.001	−0.55 (−0.93, −0.17)	0.005
Pulmonary vascular resistance, WU	0.47 (0.27, 0.67)	<0.001	0.41 (0.18, 0.64)	<0.001
Peak VO₂, ml/kg/min	−1.9 (−2.8, −0.9)	<0.001	−1.8 (−2.8, −0.8)	0.001

Adjusted for age, sex, obesity, atrial fibrillation, left atrial volume, left ventricular mass, and E/e’ ratio

^**

Per 1-SD decrease (worsening) in left atrial reservoir strain

CI = confidence interval; PA = pulmonary artery; VO₂ = oxygen consumption