Distinguishing Cardiac Amyloidosis and Hypertrophic Cardiomyopathy by Thickness and Myocardial Deformation of the Right Ventricle

Table 2

Cardiac function and myocardial strain in CA and HCM patients.

Parameters	Normal controls (n = 30)	HCM (n = 60)	CA (n = 60)	value (CA vs HCM)
RVEF%	57.1 ± 9.1	51.6 ± 13.5	41.5 ± 16.5^∗∗∗	<0.001
RVEDV-index (ml/m^2)	60.1 ± 16.4	53.7 ± 11.4	58.3 ± 19.9	0.556
RVESV-index (ml/m^2)	25.3 ± 7.6	25.9 ± 8.9	34.4 ± 16.3^∗∗	0.001
Radical
RV-PS (%)	31.3 ± 7.6	23.5 ± 12.1^∗∗	12.1 ± 6.9^∗∗∗	<0.001
RV-PSSR (1/s)	2.7 ± 1.5	1.9 ± 2.4	1.2 ± 1.2^∗∗∗	0.097
RV-PDSR (1/s)	−2.7 ± 1.5	−1.5 ± 0.8^∗∗∗	−1.1 ± 0.8^∗∗∗	0.079
Circumferential
RV-PS (%)	−13.7 ± 2.5	−5.6 ± 3.5^∗∗∗	−3.4 ± 2.2	<0.001
RV-PSSR (1/s)	−0.7 ± 0.4	−0.7 ± 0.4	−0.6 ± 0.5	0.086
RV-PDSR (1/s)	0.9 ± 0.5	0.6 ± 0.3	0.5 ± 0.2#	0.048
Longitudinal
RV-PS (%)	−14.23 ± 3.0	11.1 ± 4.9^∗∗∗	−4.6 ± 2.3^∗∗∗	<0.001
RV-PSSR (1/s)	−0.6 ± 0.4	−0.7 ± 0.5	−0.9 ± 0.4	0.634
RV-PDSR (1/s)	0.7 ± 0.5	0.8 ± 0.4	0.8 ± 0.4	0.546
RVT (mm)	4.0 ± 1.1	5.9 ± 1.3^∗∗∗	7.8 ± 2.1^∗∗∗	<0.001

CA, cardiac amyloidosis; HCM, hypertrophic cardiomyopathy; RVEF, right ventricular ejection fraction; EDV, end-diastolic volume; ESV, end-systolic volume; RV, right ventricular, PS, peak strain; PSSR, peak systolic strain rate; PDSR, peak diastolic strain rate; RVT, right ventricular thickness. , , and versus controls.