Table 2:

Postoperative Hemodynamic Changes After COA Repair (n=172)

Variables	All (n=172)	Surgery (n=161)	Stent (n=11)	p
COA mean gradient (pre-intervention), mmHg	31±12	32±11	31±8	0.7
COA mean gradient (post-intervention), mmHg	8±4	7±4	10±3	0.02
Δ mean gradient, mmHg	24±8	25±7	22±5	0.04
*ULE-SBP gradient (pre-intervention), mmHg	33 (18–42)	33 (17–42)	32 (20–39)	0.7
*ULE-SBP gradient (post-intervention), mmHg	5 (0–8)	5 (0–9)	5 (0–8)	0.9
Δ ULE-SBP gradient, mmHg	28 (17–31)	28 (17–33)	27 (18–32)	0.6
Aortic isthmus ratio (pre-intervention)	0.66±0.15	0.66±0.13	0.65±0.09	0.5
Aortic isthmus ratio (post-intervention)	0.87±0.11	0.87±0.10	0.84±0.12	0.1
Δ Aortic isthmus ratio	0.21±0.06	0.21±0.06	0.20±0.07	0.3

COA: Coarctation of aorta; ULE-SBP: Upper-to-lower extremity systolic blood pressure; Δ denotes difference between pre- and post-intervention indices;

^*ULE-SBP gradient data (pre- and post-intervention) were available in 155 patients.