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Table 3 Association of right atrial (RA) structure and function with incident AF

From: Association of right atrial structure with incident atrial fibrillation: a longitudinal cohort cardiovascular magnetic resonance study from the Multi-Ethnic Study of Atherosclerosis (MESA)

RA ParameterUnadjustedModel 1Model 2
HR (95% CI)P-valueHR (95% CI)P-valueHR (95% CI)P-value
RA maximum volume indexed1.16 (1.05,1.28)0.0031.24 (1.12,1.36)< 0.0011.13 (1.00,1.27)0.041
RA minimum volume indexed1.18 (1.08,1.3)0.0011.19 (1.08,1.31)< 0.0011.12 (1.01, 1.25)0.037
RA total EF %0.89 (0.8,0.99)0.030.95 (0.85,1.06)0.340.94 (0.83, 1.07)0.36
RA global strain %0.88 (0.79,0.98)0.021.06 (0.95,1.18)0.321.05 (0.92. 1.19)0.45
RA free-wall strain %0.9 (0.81,1.0)0.061.02 (0.92,1.14)0.631.01 (0.89, 1.15)0.82
  1. Hazard ratios are presented per SD change in measurements, with SD noted in Table 2
  2. Model 1 was adjusted for demographics and traditional risk factors: age, race, gender, BMI, smoking status, HDL, lipid-lowering medication, systolic blood pressure, hypertension medication, fasting glucose, alcohol use
  3. Model 2 was additionally adjusted for LA maximum volume index, LA passive emptying fraction, LA peak longitudinal strain
  4. CI confidence interval, LA left atrium; other abbreviations in Tables 1 and 2