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Introduction: To comprehensively evaluate the reported clinical effectiveness of platelet-rich plasma (PRP) in patients with chronic sinusitis undergoing endoscopic sinus surgery (ESS)., Methods: We performed a systematic review and meta-analysis of randomised controlled trials (RCTs). Five digital online databases (PubMed, Scopus, Web of Science, Google Scholar and Cochrane CENTRAL) were searched from inception up to 1st May 2023. Our specific outcomes involved postoperative nasal endoscopy scores measured via Lund-Kennedy score or Meltzer score, olfactory sensation scores and pre-operative anosmia duration. All data were pooled as standardised mean difference (SMD) with a 95% confidence interval (CI), using the RevMan software., Results: Six RCTs were included in this systematic review and meta-analysis, with a total of 169 patients. The risk of bias in the included RCTs was low in three RCTs, some concerns in one RCT and high risk in two RCTs. The overall analysis of the postoperative nasal endoscopy scores showed that the PRP group had lower scores compared to the control group (n = 3 RCTs, SMD = -1.19; 95% CI [-1.94, -0.44], p = .002). There was no significant difference between the PRP and control groups regarding anosmia duration (n = 2 RCTs, SMD = 0.21; 95% CI [-0.17, 0.59], p = 0.28) or olfactory sensation scores, despite the PRP group having higher scores (n = 2 RCTs, SMD = 0.53; 95% CI [-0.32, 1.39], p = 0.22)., Conclusion: This study highlights the potential advantages of using PRP as an additional treatment for individuals with chronic sinusitis undergoing ESS. The improvements associated with PRP include facilitating wound healing, reducing inflammation and enhancing surgical outcomes. To optimise the use of PRP in clinical settings, future research should focus on conducting larger trials with standardised protocols., (© 2024 John Wiley & Sons Ltd.)

Purpose: To perform a systematic review and meta-analysis of randomized controlled trials (RCTs) that assessed the efficacy of perioperative intravenous lidocaine versus placebo in improving the quality of surgical field during functional endoscopic sinus surgery (FESS)., Methods: PubMed, Scopus, Web of Science, and CENTRAL were thoroughly searched from inception until June 2023. The included RCTs were evaluated via RoB-2 tool. Our primary endpoint included intraoperative surgical field quality, and secondary endpoints involved operative duration, estimated blood loss, time for post-anesthesia care unit (PACU) discharge, postoperative pain, mean difference in heart rate (HR), and mean difference in mean arterial pressure (MAP). Continuous data were pooled as mean difference (MD) or standardized mean difference (SMD) via RevMan software. Also, the certainty of evidence for each outcome were assessed according to the GRADE system., Results: Four RCTs with total of 267 patients were included. Regarding the intraoperative quality of surgical field, the results indicated a significant difference in favor of the lidocaine group compared to the placebo group (n = 3 RCTs, MD - 0.80, 95% CI [- 0.98, - 0.61], p < 0.001, moderate certainty of evidence). The trial sequential analysis showed there is a substantial and conclusive evidence. Regarding time for PACU discharge, there was a significant difference that favor lidocaine group (p < 0.05). On the contrary, there was no significant difference between lidocaine and placebo groups in terms of operative duration, estimated blood loss, postoperative pain, mean change in MAP and HR, (p > 0.05)., Conclusion: Our review revealed that lidocaine infusion, compared with a placebo, significantly improved the surgical field and shortened the time required for PACU discharge. However, lidocaine did not reduce surgery time, estimated blood loss, postoperative pain, MAP, or HR., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)