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Table 3 Coronary blood flow and vessel diameter.

From: Lack of association between Chlamydia Pneumoniae serology and endothelial dysfunction of coronary arteries

  All patients CP positive p CP negative
CBF (ml / min) (+/- percentchange)     
   baseline 22.6 ± 14.39 22.0 ± 13.80 → 0.503 ← 23.4 ± 15.28
   ACh D1 39.6 ± 21.21 (+75.2%) 40.4 ± 22.34 (+83.6%) → 0.172 ← 38.5 ± 19.33 (+64.5%)
   ACh D2 48.7 ± 30.34 (+115.5%) 51.6 ± 27.82 (+134.5%) → 0.177 ← 41.3 ± 34.78 (+76.5%)
   NaCl (control) 23.1 ± 12.15 (+2.2%) 22.1 ± 12.38 (+0.4%) → 0.697 ← 24.7 ± 11.57 (+5.5%)
   NTG 40.3 ± 23.06 (+78.3%) 39.5 ± 20.74 (+79.5%) → 0.696 ← 41.0 ± 24.74 (+75.2%)
Vessel diameter (mm) (+/- percent change)     
   baseline 2.53 ± 0.50 2.55 ± 0.50 → 0.773 ← 2.51 ± 0.48
   ACh D1 2.55 ± 0.50 (+0.8%) 2.56 ± 0.52 (+0.4%) → 0.658 ← 2.54 ± 0.46 (+1.2%)
   ACh D2 2.54 ± 0.61 (+0.3%) 2.60 ± 0.62 (+2.0%) → 0.289 ← 2.46 ± 0.58 (-2.0%)
   NaCl (control) 2.54 ± 0.45 (+0.1%) 2.52 ± 0.48 (-1.1%) → 0.543 ← 2.58 ± 0.39 (+2.7%)
   NTG 2.88 ± 0.52 (+13.8%) 2.88 ± 0.47 (+13.0%) → 0.801 ← 2.89 ± 0.60 (+15.1%)
   CFVR 3.0 ± 0.27 3.1 ± 0.31 → 0.652 ← 3.0 ± 0.10
  1. Coronary blood flow (CBF) and vessel diameter before (baseline) and after i. c. infusion of acetylcholine (ACh) at medium dose (ACh D1: 7.2 μg/min → 1/2 × 10-6 mol/l) and high dose (ACh D2: 36 μg/min → 1/4 × 10-5 mol/l), 0.2 mg nitroglycerin (NTG), continuous infusion of saline (NaCl 0.9 % at 2 ml/min) served as control. The comparison of the CBF, and of the vessel diameter with the corresponding baseline value is expressed as percent change. CFVR: coronary flow velocity reserve (adenosine i. c. versus baseline), CP: Chlamydia pneumoniae. {values are mean ± SD, p values of two-tailed student's t-test}