fa پژوهشي اصیل Original Research <p style="text-align: justify;">Background and Objective: This study was performed to investigate long-term complications of Respiratory&nbsp;Syncytial Viral infections in patients admitted to Ali Asghar Hospital with acute respiratory infections who&nbsp;presented to follow-up outpatient clinics 6 months to 3 years after discharge, between years 2009 and 2011.<br> Methods: In this retrospective observational study that was performed in a descriptive cross-sectional manner,&nbsp;all patients suffering from acute bronchiolitis diagnosed with Respiratory Syncytial Virus, whose diagnosis&nbsp;had been confirmed by RCP of pharyngeal secretions, were included in the study. Data collection was performed&nbsp;through patient file reviews and questionnaires in outpatient clinics between 6 months and 3 years following<br> discharge. Data collection included demographics such as age, sex, and address. Clinical data included&nbsp;inpatient documentations such as history of Atopic Dermatitis or Gastro-esophageal Reflux, or length of stay in&nbsp;Intensive Care Unit (ICU); and follow-up findings such as recurrent wheezing.<br> Results: Forty patients were included in the study, thirty-five percent of whom were male and 65% female;&nbsp;their average age was 33.6 months (SD: 12.08). The percentage of patients living in urban areas was 92.5%,&nbsp;with 65% living in Tehran. In the follow-up period of 6 months to 3 years, recurrent wheezing was recorded in&nbsp;15%, pulmonary hypersensitivity in 40%, food allergy in 27.5%, exposure to cigarette smoke in 44.1% and enrolment<br> in child day care facilities in 35% of the cases. In this study, there was no significant correlation between&nbsp;recurrent wheezing and factors such as age, sex, residence in Tehran, history of pre-term birth, length of&nbsp;stay in ICU, re-admission to hospital or exposure to cigarette smoke. There was a significant correlation between&nbsp;recurrent wheezing and atopic dermatitis and food allergy (p< 0.05).<br> Conclusion: In previous studies, Respiratory Syncytial Virus had been connected to complications such as&nbsp;recurrent wheezing; in this study, about 15% of patients followed up between 6 months and 3 years of discharge&nbsp;from hospital were found to have recurrent wheezing; there was a correlation between incidence of recurrent&nbsp;wheezing and factors such as atopic dermatitis or food allergies. Larger or multi-central studies are recommended&nbsp;to investigate long-term complications of RSV infection and their relationship with other predisposing factors.</p> Acute Respiratory Infection, Respiratory Syncytial Virus, Recurrent Wheezing 12 16 http://ijca.iums.ac.ir/browse.php?a_code=A-10-1-50&slc_lang=fa&sid=1 Alireza Nateghian 1003194753284600399 1003194753284600399 Yes Iran University of Medical Sciences, Tehran, Iran Masoud Parsania 1003194753284600400 1003194753284600400 No Islamic Azad University, Tehran, Iran Ali Mehrpour Mohammadabadi 1003194753284600401 1003194753284600401 No General Practitioner