Early detection of myocardial dysfunction in a cat that gradually progressed to endomyocardial form of restrictive cardiomyopathy

Table. 2 Layer-specific strain and systolic strain rate assessed by two-dimensional speckle tracking echocardiography at first visit (day 0) and follow-up examinations

	Day 0	Day 89	Day 468	Healthy cats
LV-SL (%)
Whole layer	-16.2^a	-13.7^a	-12.2^a	-20.8 (-18.3, -22.6)
Endocardium	-18.8^a	-15.5^a	-14.7^a	-23.8 (-21.9, -25.3)
Epicardium	-13.9^a	-12.2^a	-10.7^a	-18.5 (-16.1, -19.8)
Endo/epi	1.4	1.3	1.2	1.4 (1.2, 1.4)
Systolic LV-SrL (s^− 1)	-3.6^a	-3.0	-2.5^a	2.9 (2.3, 3.5)
LV-SC (PM)
Whole layer (%)	-20.5	-16.3^a	-11.9^a	-19.1 (-17.3, -23.9)
Endocardium (%)	-28.5^a	-27.9^a	-20.9^a	-38.7 (-32.7, -48.3)
Epicardium (%)	-15.8	-9.3	-5.8^a	-7.3 (-6.2, -9.3)
Endo/epi	1.8^a	3.0^a	3.6^a	4.8 (4.1, 6.5)
Systolic LV-SrC (PM) (s^− 1)	-3.7^a	-2.8	-2.3^a	2.8 (2.5, 3.2)
LV-SC (MV)
Whole layer (%)	-21.0^a	-28.5^a	-18.7	-18.1 (-16.5, -20.1)
Endocardium (%)	-35.9	-49.9^a	-30.9	-31.7 (-25.7, -37.4)
Epicardium (%)	-14.7^a	-14.0^a	-10.6	-9.7 (-6.7, -13.5)
Endo/epi	2.4^a	3.6	2.9	3.1 (2.5, 5.1)
Systolic LV-SrC (MV) (s^− 1)	-4.2^a	-4.6^a	-3.0	-3.1 (-2.7, -3.7)
LV-SC (AP) (%)
Whole layer (%)	-8.0^a	-13.0^a	-5.6^a	-18.5 (-16.3, -22.4)
Endocardium (%)	-12.0^a	-20.8^a	-5.5^a	-37.2 (-31.9, -42.1)
Epicardium (%)	-6.3	-8.0	-5.9	-6.6 (-5.5, -11.3)
Endo/epi	1.9^a	2.6^a	0.9^a	5.2 (3.8, 6.2)
Systolic LV-SrC (AP) (s^− 1)	-2.2^a	-2.8	-1.6^a	-2.9 (-2.7, -3.2)
RV-SL (%)
Whole layer (%)	-31.7	-32.5	-27.2^a	-32.9 (-28.2, -40.2)
Endocardium (%)	-35.7	-35.7	-33.3	-35.8 (-29.9, -42.3)
Epicardium (%)	-28.2	-29.9	-22.4^a	-30.7 (-26.1, -38.3)
Endo/epi	1.3	1.2	1.5^a	1.3 (1.2, 1.3)
Systolic RV-SrL (s^− 1)	-7.1^a	-7.4^a	-8.0^a	-5.8 (-4.8, -6.9)

Healthy cat ranges (median [interquartile range]) were established from 15 healthy cats
AP apical level, LV left ventricular, MV mitral valve level, PM papillary muscle level, RV right ventricular, SC circumferential strain, SL longitudinal strain, SrC circumferential strain rate, SrL longitudinal strain rate
^aValue that was out of the interquartile range of the 15 healthy cats

ISSN: 1746-6148