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Fig. 2 | Respiratory Research

Fig. 2

From: Diagnostic accuracy of methacholine challenge tests assessing airway hyperreactivity in asthmatic patients - a multifunctional approach

Fig. 2

Dose–response curves of methacholine at each consecutive provocation levels (PD1: 0.2 mg; PD2: 1.0 mg; PD3: 2.2 mg methacholine and reversibility to a ß2-agonist) referred for effective specific conductance (sGeff), forced expiratory volume in one second (FEV1) and forced expiratory flow at 50% vital capacity (FEF50) in relation to the PD-level −20% (PD-20) for FEV1 and FEF50, PD-level −40% (PD-40) for sGeff resp., regarding asthmatic patients (A = in comparison with non-asthmatic subjects (non-A)

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