Efficacy of enhanced extracorporeal counterpulsation combined with atorvastatin in the treatment of cognitive impairment after stroke

Table 6 Comparison of the resistance index values of the cerebral vessels in the two groups (mean ± SD)

Group	LACA		RACA		LMCA		RMCA		LPCA		RPCA
	Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment
Study group (n = 30)	0.86 ± 0.18	0.54 ± 0.10a	0.86 ± 0.22	0.53 ± 0.13a	0.85 ± 0.25	0.53 ± 0.16a	0.95 ± 0.28	0.48 ± 0.13a	0.84 ± 0.28	0.49 ± 0.11a	0.93 ± 0.25	0.53 ± 0.13a
Control group (n = 30)	0.93 ± 0.23	0.64 ± 0.11a	0.84 ± 0.15	0.64 ± 0.15a	0.82 ± 0.22	0.65 ± 0.21a	0.92 ± 0.21	0.62 ± 0.24a	0.86 ± 0.20	0.58 ± 0.14a	0.90 ± 0.18	0.63 ± 0.15a
P value	0.225	0.001	0.729	0.004	0.720	0.014	0.582	0.007	0.701	0.006	0.566	0.008
t value	1.226	3.661	0.349	3.033	0.360	2.547	0.553	2.847	0.386	2.864	0.578	2.750

^aP < 0.05 compared to the same group before treatment.

LACA: Left-anterior cerebral artery; RACA: Right-anterior cerebral artery; LMCA: Left-middle cerebral artery; RMCA: Right-middle cerebral artery; LPCA: Left-posterior cerebral artery; RPCA: Right-posterior cerebral artery.