Preparation
The provocation test is performed at the temperature of 14-20℃ in a
quiet room which is equipped with first-aid measures such as
epinephrine, dexamethasone, antihistamines, tracheotomy packages, and
oxygen inhalation devices. We first prepared well the solvent solution,
allergen solution (HDM 1.0mg/ml, Wolwobiotech, China) in two different
marker provocation device (the sterile syringe). Then the patient’s
scores of total nasal symptom scores (TNSS) , visual analog scale (VAS)
and anterior nasal endoscope and nasal flow test were assessed at
baseline and after nasal provocation.