Reverse remodeling of left atrium assessed by cardiovascular magnetic resonance feature tracking in hypertrophic obstructive cardiomyopathy after septal myectomy

Table 2 LV conventional parameters in control group and hypertrophic obstructive cardiomyopathy group before and after myectomy

Parameter	Premyectomy (n = 88)	Postmyectomy (n = 88)	Healthy controls (n = 86)	P value for premyectomy vs. postmyectomy
LV ejection fraction (%)	64.2 ± 8.1^†	59.5 ± 7.6^†	61.6 ± 4.7	< 0.001
LV end-diastolic volume index (ml/m²)	83.9 ± 24.4^†	79.7 ± 23.3^†	72.4 ± 13.0	0.12
LV end-systolic volume index (ml/m²)	27.8 (22.4, 35.6)	29.2 (24.7, 36.0)	28.2 (23.4, 32.4)	0.18
Stroke volume (ml)	92.9 ± 27.0^†	82.9 ± 18.9^†	77.2 ± 12.0	< 0.001
Cardiac index (l/min/m²)	3.46 ± 0.92^†	3.07 ± 0.67	3.17 ± 0.64	< 0.001
Maximal LV wall thickness (mm)	28.5 ± 6.7^†	23.1 ± 6.7^†	9.6 ± 1.7	< 0.001
LV mass index (g/m²)	97.2 ± 50.9^†	79.0 ± 41.2^†	38.5 ± 9.3	< 0.001

Values are presented as mean ± standard deviations or median (interquartile range)
LV left ventricular
^†Indicating P value < 0.05 for patients with hypertrophic obstructive cardiomyopathy versus healthy participants

ISSN: 1532-429X