High-frequency electrical stimulation of cervical vagi reduces airway response to methacholine

Figure 4 Peak airway responses to methacholine aerosol (100 μg/mL per minute for 2 min) and the associated cardiovascular changes. n = 9 and 8 in Sal- and Ova-treated guinea pigs respectively; mean ± SE. ^bP < 0.01, vs the data of pre-methacholine (MCh) challenge presented as “0”; ^dP < 0.01 between Sal- and Ova-treated groups. MABP: Mean arterial blood pressure; HR: Heart rate; R_L: Total lung resistance; C_dyn: Dynamic pulmonary compliance.