Aortic remodelling and false lumen changes after the frozen elephant trunk technique using the thoraflex hybrid stented graft for aortic dissection

The Egyptian Heart Journal

Table 2 Main study data

	Pre-operative	Early post-operative	P-value
Ratio with total aortic lumen in both groups
True aortic lumen	0.31 (0.12–0.86)	0.4 (0.19–0.88)	0.042*
False aortic lumen	0.66 (0.13–0.84)	0.54 (0.12–0.78)	0.02*

	Acute (n = 8)	Chronic (n = 14)	P-value
Association between patients’ presentation and true lumen to total aortic lumen ratio
Pre-operative ratio between true lumen and total aortic lumen	0.37 (0.12–0.86)	0.27 (0.14–0.8)	0.25
Post-operative ratio between true lumen and total aortic lumen	0.55 (0.35–0.85)	0.27 (0.19–0.88)	0.009*
Change in the ratio before and after operation (post-operative ratio minus pre-operative ratio)	0.11 (− 0.08–0.85)	0.03 (− 0.14–0.21)	0.26
Association between patients’ presentation and false lumen to total aortic lumen ratio
Pre-operative ratio between false lumen and total aortic lumen	0.63 (0.13–0.8)	0.68 (0.2–0.84)	0.5
Post-operative ratio between false lumen and total aortic lumen	0.45 (0.15–0.65)	0.63 (0.12–0.78)	0.005*
Change in the ratio before and after operation (post-operative ratio minus pre-operative ratio)	− 0.11 (− 0.51–0.08)	− 0.04 (− 0.21–0.14)	0.36