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Table 4 Accuracy of echo parameters for the determinants of LAA thrombus in 140 persistent AF patients with a low CHADS2 score (≤1)

From: Motion of left atrial appendage as a determinant of thrombus formation in patients with a low CHADS2 score receiving warfarin for persistent nonvalvular atrial fibrillation

Cutoff values

Sensitivity

Specificity

PPV

NPV

LAAPV (≤ 24 cm/sec)

73 (66–80)

75 (68–82)

26 (18–33)

96 (92–99)

LAAEF (≤ 21%)

93 (89–97)

96 (92–99)

74 (67–81)

99 (97–100)

  1. Data are percentages. Numbers in parentheses are 95% confidence intervals. PPV: positive predictive value. NPV: negative predictive value. Other abbreviations as in Table1.