2.1 Patient Selection
This study was carried out in removed for blind peer review from April 2019 to March 2020. in order to compare the difference of group ITD and ITL in the patients, the two groups of patients who treated with dexamethasone and lidocaine were included in this study. All the patients were diagnosed with Ménière’s disease according to the AAO-HNScriteria:
• i.e.≥2 episodes of spontaneous paroxysmal vertigo lasting ≥ 20 minutes;
• sensorineural hearing loss on ≥ 1 audiogram;
• tinnitus or earfullness;
• and other causes ruled out[5].
Exclusion criteria: no external ear, middle ear and other inner ear diseases locally, no systemic disease such as diabetes, hypertension and malignant tumor. This study program has been approved by the ethics committee of removed for blind peer review , and all patients have signed informed consent before treatment.