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Thorax 54:1033-1035 doi:10.1136/thx.54.11.1033
  • Short paper

Effect of oral l-arginine on airway hyperresponsiveness to histamine in asthma

Table 1

Effect of pretreatment with placebo or l-arginine on FEV1, exhaled NO levels, PC20, and dose-response slope to histamine

  • FEV1 = forced expiratory volume in one second; ppb = parts per billion; PC20 = provocative concentration causing a 20% fall from baseline FEV1, DRS = dose-response slope.

  • 1-150 p<0.05.

  • 1-151 Data are geometric mean (95% confidence interval).

  • 1-152 Difference in changes from baseline values in FEV1 and exhaled NO between l-arginine and placebo pretreatment.

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