Criteria for determining the need for surgical treatment of tricuspid regurgitation during mitral valve replacement

Table 4 Comparison of tricuspid regurgitation severity

Severity of tricuspid regurgitation	Control group (n = 50)	DeVega group (n = 27)	Kay group (n = 12)	P
Preoperative				< 0.001*
Minor	50 (100)	0 (0)	0 (0)
Moderate	0 (0)	10 (37)	11 (92)
Severe	0 (0)	17 (63)	1 (8)
Postoperative				0.736
Minor	45 (90)	25 (93)	10 (83)
Moderate	4 (8)	0 (0)	2 (17)
Severe	1 (2)	2 (7)	0 (0)

Data are presented as number (percentage). Difference among three groups was compared using Kruskal-Wallis test; Difference between two groups (post-hoc pair-wise comparisons) was compared using Mann-Whitney U test.
*P < 0.05, statistically significant difference among three groups (Kruskal-Wallis test).

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