Surgical Treatment of Concomitant Atrial Fibrillation: Focus onto Atrial Contractility

Table 4

Univariate and multivariate analysis for absence of LA contractility recovery at 24 months of follow-up.

Factors	Univariate   value	Multivariate analysis
		HR	95% CI	value
Duration of AF	<0.0002	1.034	1.006–1.063	0.017
3-month SR presence	0.07
6-month SR presence	0.08
LAA (cm^2)	0.09
PAP	0.08
Age	0.26
Rheumatic disease	0.31
Sex	0.18
Permanent/persistent AF	0.12
Postoperative bleeding	0.59
CPB time	0.64
Cross-clamp time	0.33
AF at discharge	0.24
LAD (mm)	0.12
LVESD (mm)	0.35
LVEDD (mm)	0.78
LVEF (%)	0.49

Not all factors were entered into multivariate model.
AF, atrial fibrillation; CI, confidence interval; CPB, cardiopulmonary bypass; HR, hazard ratio; LAA, left atrial area; LAD, left atrial diameter; LVEDD, left ventricular end-diastolic diameter; LVEF, left ventricular ejection fraction; LVESD, left ventricular end-systolic diameter; PAP, pulmonary artery pressure.