Ratio of preoperative atrial natriuretic peptide to brain natriuretic peptide predicts the outcome of the maze procedure in mitral valve disease

Table 1 Preoperative clinical characteristics of patients

	SR group (n=16)	AF group (n=7)	p value
Age (years)	65.1+/−12.4	70.4+/−5.6	0.290^a
Gender (male/female)	8/8	2/5	0.405^b
CTR (%)	55.2+/−7.5	61.9+/−5.9	0.051^a
LVDd (mm)	53.8+/−8.9	51.0+/−7.0	0.554^a
LAD (mm)	51.5+/−10.6	63.5+/−13.5	0.031^a
EF (%)	64.7+/−7.0	68.7+/−7.3	0.234^a
Preoperative creatinine(mg/dl)	0.97+/−0.02	1.10+/−0.18	0.384^a
Preoperative ANP (pg/ml)	120.1+/−67.3	74.8+/−45.4	0.141^a
Preoperative BNP (pg/ml)	186.4+/−113.9	191.9+/−72.2	0.909^a
Preoperative ANP/BNP ratio	0.74+/−0.29	0.42/-0.28	0.025^a

^a Unpaired t test. ^bFisher’s exact test.
AF: atrial fibrillation; ANP: atrial natriuretic peptide; BNP: brain natriuretic peptide; CTR: cardiothoracic ratio; EF: ejection fraction; LAD: left atrial dimension; LVDd: left ventricular end-diastolic dimension.

ISSN: 1749-8090