Electrocardiographic Characteristics of Breast Cancer Patients Treated with Chemotherapy

Table 2

Echocardiographic parameters before and at each follow-up point during chemotherapy in breast cancer patients.

Variable	T0	T1	value	T2	value	T3	value
LVIDd (cm)	4.60 ± 0.29	4.64 ± 0.29	0.422	4.67 ± 0.30	0.184	4.58 ± 0.27	0.711
LA (cm)	3.00 ± 0.31	3.05 ± 0.39	0.458	3.06 ± 0.27	0.425	3.01 ± 0.32	0.919
LVEF (%)	67.00 ± 4.07	66.09 ± 3.94	0.201	65.95 ± 3.96	0.139	65.34 ± 4.00	0.052
E/A ratio	1.10 ± 0.35	1.16 ± 0.48	0.389	1.11 ± 0.41	0.873	1.03 ± 0.38	0.334
E/E′ ratio	7.64 ± 1.74	7.99 ± 1.99	0.298	7.86 ± 1.93	0.519	7.28 ± 1.96	0.310

Values are mean ± SD. Compared with T0 . T0, baseline before chemotherapy; T1, after 1 cycle of chemotherapy; T2, after 3 cycles of chemotherapy; T3, end of chemotherapy; LVIDd, left ventricular internal dimension diastole; LA, left atrial diameter; LVEF, left ventricle ejection fraction.