Independent Value of Cardiac Troponin T and Left Ventricular Global Longitudinal Strain in Predicting All-Cause Mortality among Stable Hemodialysis Patients with Preserved Left Ventricular Ejection Fraction

Table 2

Baseline echocardiographic study of asymptomatic hemodialysis patients with preserved left ventricular ejection fraction.

	cTnT Tertile			𝑃 for trend
	Lower (cTnT ≤ 0.02 ng/mL, 𝑛=30)	Middle (cTnT of 0.02–0.042 ng/mL, 𝑛=29)	Upper (cTnT > 0.042 ng/mL, 𝑛=29)
LV EDVi (mL/m^2)	69.9±18.8	69.5±20.8	71.1±19.3	0.96
LVMi (gm/m^2)	135.4±25.0	151.5±57.2	159.1±64.7	0.27
IVCe diameter (cm)	1.21±0.26	1.3±0.21	1.35±0.35	0.18
LVEF (%)	65.7±5.2	64.7±5.9	62.3±6.4	0.10
𝑠^′ (cm/sec)	8.7±2.0	8.8±1.6	7.9±2.2	0.16
GLS (%)	−20.0±3.5	−17.6±3.0	−16.4±4.6	0.002*
LSRs (sec^−1)	−1.02±0.21	−0.98±0.22	−0.89±0.21	0.06
CS (%)	−22.2±5.6	−20.7±6.3	−19.6±5.9	0.33
CSRs (sec^−1)	−2.05±0.56	−1.98±0.66	−1.66±0.45	0.05
𝐸 (m/sec)	0.79±0.31	0.81±0.31	0.79±0.29	0.97
𝐴 (m/sec)	1.01±0.28	1.09±0.39	1.00±0.27	0.53
𝐸/𝐴	0.85±0.53	0.80±0.35	0.78±0.23	0.78
𝑒^′ (cm/sec)	5.0±1.4	4.8±1.1	4.7±1.5	0.63
𝐸/𝑒^′	15.8±5.9	18.2±10.1	16.8±6.1	0.52
LAVi (mL/m^2)	34.1±7.9	35.6±7.7	36.4±8.9	0.67

Continuous data are expressed as the mean ± standard deviation or the median (25th and 75th percentiles); categorical data are expressed as the number (percentage). A nonparametric Kruskal-Wallis test was performed for nonnormally distributed data.
^∗𝑃<0.05.
Abbreviations: CS: average circumferential strain; CSRs: circumferential systolic strain rate; cTnT: cardiac troponin T; EDVi: end-diastolic volume index; EF: ejection fraction; 𝐸/𝑒^′: early transmitral velocity to tissue Doppler mitral annular early diastolic velocity ratio; GLS: global left ventricular peak systolic longitudinal strain; IVCe: end-expiratory inferior vena cava diameter; LAVi: left atrial volume index; LSRs: longitudinal systolic strain rate; LV: left ventricular; LVMi: left ventricular mass index; 𝑠^′: left ventricular systolic myocardial velocity.