The use of Platelet rich Plasma in COVID-19 Induced Olfactory Dysfunction: Systematic Review

General Surgery Department, Royal Bolton NHS Trust, Bolton, UK. General Surgery Department, Blackpool Teaching Hospital NHS Foundation Trust, Blackpool, UK. Manchester, UK Wythenshawe hospital, Burns and Plastics Department, The University Hospital of South Manchester NHS Foundation Trust. GRID: grid.498924.a. ISNI: 0000 0004 0430 9101 Otolaryngology department, London, UK Barking, Havering and Redbridge University Hospital NHS Trust, Queens Hospital. GRID: grid.415588.5. ISNI: 0000 0004 0400 4455 Alexandria, Egypt E.N.T department, Faculty of Medicine, Alexandria University. GRID: grid.7155.6. ISNI: 0000 0001 2260 6941

Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India. 2023;:1-5
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PURPOSE Different modalities of treatment have been suggested in the treatment for post COVID-19 olfactory dysfunction (OD). Starting with lifestyle modification, smoking cessation, for example, was shown to improve the symptoms for patients with OD. Intranasal and oral corticosteroids have been described in the literature for the treatment of OD. In this review, we are looking at a novel intervention using platelet-rich plasma injection into the nasal cleft for treatment of post COVID-19 infection olfactory dysfunction. METHODS A literature search was done using the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) 2020 Guidelines, the databases of PMC, Medline, CINAHL, Wiley online library were searched from their year of inception until February 2023. Search terms were used and included a combination of the following keywords; "platelet-rich plasma", "platelet rich plasma", "PRP", "Anosmia", "olfactory dysfunction" and "COVID". RESULTS The four studies in this review included a total of 238 adult patients who presented with olfactory dysfunction. The studies were heterogenic in terms of follow up period which was not long enough through all the included studies. Additionally, different protocol of injecting was seen in different studies. CONCLUSION Injecting PRP for treatment of COVID-19 induced olfactory dysfunction is a safe technique with what seems like promising initial results with low complication rate. However, there are not enough studies assessing its effectiveness compared to other treatment modalities. Further randomized controlled trials with shared protocol are needed to establish further understanding of its role in treatment of COVID-19 induced OD.
Study details
Study Design : Systematic Review
Language : eng
Credits : Bibliographic data from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine