Endothelial Factors after Selective Retrograde Coronary Venous Bypass under Different Pressures

Figures & data

Table I. Changes of endothelial factors in each group.

	Time	Control Group	60 mmHg Group	90 mmHg Group
NO (μmol/L)	before	97.52 ± 6.65	93.79 ± 5.13	96.21 ± 5.52
	240 min	28.75 ± 4.05	57.43 ± 4.23Δ	47.70 ± 2.87▴
ET (pg/L)	before	58.32 ± 2.44	58.20 ± 2.21	57.42 ± 2.98
	240 min	251.15 ± 8.29	102.23 ± 7.30Δ	155.75 ± 7.87▴

ET: Endothelin. NO: Nitric oxide. ΔP < 0.001 compared with control group; ▴P < 0.001 compared with 60 mmHg group.

Figure 1. Pathological analysis (A) The ink was distributed in myocardial sinuses and no angiorrhexis in SRCVB 60mmHg group; (B) the ink was distributed in capillaries and no angiorrhexis or ink efflux in SRCVB 60 mmHg group; (C) and (D) though ink could be distributed to PDA region, significant myocardial tissue edema was observed in SRCVB 90 mmHg group.

Figure 2. Blood vessel imaging. The imaging agent could diffuse into the myocardial tissue through middle cardiac vein, and flow back to right atrium through contralateral coronary vein.