The clinical trial will be conducted to examine the effect of administering a daily dose of 100 mg Nigella sativa nasal oil drops for four weeks on selected outcomes which include severity of symptoms, sleep quality and patient satisfaction among patients with chronic rhinosinusitis. The trial will be conducted on 102 adult patients with chronic rhinosinusitis who will be randomly assigned to either a study group (51 participant) who will receive Nigella sativa beside the standard treatment or a control group (51 participant) who will receive the standard treatment only. The current trial will be conducted in the Ear, Nose and Throat (ENT) outpatient clinic at Kasr Al Ainy University Hospital, Cairo, Egypt. Required data will be collected by using the following four tools: (a) Demographic and Medical Data Form (DMDF), (b) Sino-Nasal Outcome Test 22 (SNOT-22), (c) Sleep Quality Scale (SQS) and (d) Treatment Satisfaction Questionnaire for Medication (TSQM). The researcher prepared a flyer that will be handed in for the study group to explain how the oil will be utilized by the participants. The formal initial approval was obtained from Research Ethics Committee at Faculty of Nursing, Cairo University and an official permission was also obtained from the hospital administrators for conducting the trial. The researcher collaborated with Emeritus Professor in Pharmacognosy from the College of Pharmacy for the preparation of N. sativa nasal oil drops from Nigella sativa and Sesame seeds. Thereafter, data collection will be carried out from both groups using the following five steps as follows: recruitment and randomization; interviewing; initial assessment; intervention; follow-up and monitoring.
the study is intended to test the effect of Nigella sativa nasal oil drops on selected outcomes among patients with chronic rhinosinusitis using prospective clinical trial design. To achieve the aim of the current trial the following research hypotheses are postulated: H1. The total severity of symptoms mean scores of patients with CRS who will use Nigella sativa nasal oil drops will be different from the total severity of symptoms mean scores of a control group.~H2. The total sleep quality mean scores of patients with CRS who will use Nigella sativa nasal oil drops will be different from the total sleep quality mean scores of a control group.~H3. The total patient satisfaction mean scores of patients with CRS who will use Nigella sativa nasal oil drops will be different from the total patient satisfaction mean scores of a control group.