Role of Corticosteroid Nasal Spray in Recovery of Smell Sensation in COVID-19 Patients

This study willbe submitted on patients who recently recovered from proven COVID-19 infection and complaining of anosmia or hyposmia.The proven COVID-19 infection will be relied on a positive real-time reverse transcription polymerase chain reaction (rRT-PCR) with samples obtained by a nasopharyngeal swab. The recovery is defined as 2 consecutives negative (rRT-PCR) samples.

Complete medical history will be taken, and essential clinical assessment with appropriate protective measures will be performed in all patients.The patients in the study will be randomly divided into two groups: - Group I: -who will receive topical corticosteroid nasal spray (mometasone furoate nasal spray) beside olfactory training Group II: -who will not receive topical corticosteroid nasal spray but only olfactory training.

As regards the assessment of smell,the patient will assess his smell sensation using familiar substances with distinctive odor. A jar of coffee, a branch of mint and garlic are some used substances. The patient will report the degree of anosmia subjectively with score on a scale from 0 to 10.The assessment of smell will be done initially after recovery/discharge, after 1 week, 2 weeks and after 3 weeks for all patients. The duration of smell loss will be recorded from the onset of anosmia till full recovery of the sensation.