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Table 2 Results of electrocardiographic analysis in patients with ankylosing spondylitis (n = 210)

From: Cardiac conduction system abnormalities in ankylosing spondylitis: a cross-sectional study

Heart rate (beats/min)

66 (12)

RR-interval

930 (159)

P-wave duration**

97 (15)

PQ-interval*

164 (27)

QRS-interval**

88 (14)

QRS-interval <100*

153 (73%)

QRS-interval 100-119*

50 (24%)

QRS-interval ≥120*

7 (3.3%)

QTcB-interval**

406 (29)

Atrial fibrillation

2 (1.0%)

AV-block, 1st degree (≥220)

7 (3.3%)

AV-block, 1st degree (≥200)

19 (9%)

AV-block, 2nd degree

0

AV-block, 3rd degree

0

Left anterior fascicular block

12 (6%)

Pacemaker

1 (0.5%)

Any (≥1) conduction abnormality

21 (10%)

with AV-block, 1st degree (≥200)

31 (15%)

  1. * n = 209 (pacemaker patient excluded).
  2. ** n = 207 (pacemaker and atrial fibrillation patients excluded).
  3. Data are presented as mean (SD) or as otherwise stated. All intervals are in ms.