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Background: Current treatment paradigms recommend surgical intervention when conventional medical management proves ineffective in resolving chronic rhinosinusitis with nasal polyposis. Objectives: To assess and compare the efficacy of dupilumab and functional endoscopic sinus surgery (FESS) for the treatment of chronic rhinosinusitis with nasal polyp (CRSwNP) over time. Methods: Studies comparing CRSwNP patients who received dupilumab with those who underwent FESS were included. Outcome measures included the nasal congestion score (NCS), Sino-nasal Outcome Test-22 (SNOT-22), University of Pennsylvania Smell Identification Test-40 (UPSIT-40), and nasal polyp score (NPS). The risk of bias was evaluated using the Newcastle-Ottawa Scale. Results: A total of 4 studies with 724 participants were included. The dupilumab group had a superior NCS, but an inferior NPS, compared to the FESS group during the follow-up period. The SNOT-22 score of the dupilumab group was inferior to that of the FESS group until 6 months posttreatment, but the scores were similar at around 1 year. A similar trend was observed for the UPSIT-40 score, but the score of the dupilumab group was higher at around 1 year. Conclusion: Functional endoscopic sinus surgery was more effective than dupilumab for several months after treatment. However, at 1 year after treatment, the effects of the 2 treatments became similar, with greater olfactory improvement seen in the dupilumab group. [ABSTRACT FROM AUTHOR]

Background and Objectives: We investigated the effects of using a BiZact™ device for tonsillectomy on operating time, intraoperative blood loss, postoperative bleeding rate, and pain through a meta-analysis of the relevant literature. Materials and Methods: We reviewed studies retrieved from the databases of PubMed, SCOPUS, Google Scholar, Embase, Web of Science, and Cochrane up to March 2024. The results were analyzed following PRISMA guidelines. Six studies that compared the outcomes of patients receiving perioperative BiZact™ tonsillectomy with those in control groups (cold steel dissection or bipolar tonsillectomy) were included for this analysis of the outcomes, which included intraoperative bleeding and time, postoperative pain, and frequency of postoperative bleeding. Results: The operative time (SMD −11.5985, 95%CI [−20.3326; −2.8644], I2 = 99.5%) in the treatment group was significantly reduced compared to the control group. However, BiZact™ showed no significant efficacy in reducing intraoperative bleeding when compared with the control group (SMD −0.0480, 95%CI [−1.8200; 1.7240], I2 = 98.6%). Postoperative pain on day 1 (SMD −0.0885, 95%CI [−0.4368; 0.2598], I2 = 98.9%), day 3 (SMD −0.2118, 95%CI [−0.6110; 0.1873], I2 = 99.5%), and later than day 7 (SMD 0.0924, 95%CI [−0.2491; 0.4338], I2 = 98.6%) in the treatment group was not significantly reduced relative to the control group. When compared to the control group, BiZact™ did not reduce the incidence of secondary postoperative bleeding control in the operation room (OR 0.5711, 95%CI [0.2476; 1.3173], I2 = 32.1%), primary bleeding (OR 0.4514, 95%CI [0.0568; 3.5894], I2 = 0.0%), or all postoperative bleeding events (OR 0.8117, 95%CI [0.5796; 1.1368], I2 = 26.3%). Conclusions: This study demonstrated that using the BiZact™ device for tonsillectomy significantly decreased the operative time but could not effectively reduce intraoperative bleeding or postoperative pain and bleeding. [ABSTRACT FROM AUTHOR]

Objectives: The primary aim of this study was to assess disparities in nasal nitric oxide (NO) levels between individuals diagnosed with eosinophilic chronic rhinosinusitis (ECRS) and those without ECRS. The second aim was to ascertain the comparative predictive efficacy of these nasal NO levels for the presence of ECRS. Methods: A systematic analysis was conducted on relevant studies that compared nasal NO levels in individuals with ECRS and those without. Furthermore, the discriminatory capacity of nasal NO in distinguishing ECRS from non-ECRS cohorts was quantified. The risk of bias across studies was evaluated utilizing the Newcastle-Ottawa scale. Results: The comprehensive review encompassed a total of 5 studies involving 470 participants. Findings revealed that patients diagnosed with ECRS exhibited significantly higher levels of nasal NO, as measured in parts per billion (ppb), compared to their non-ECRS patients. The mean difference was 130.03 ppb (95% confidence interval: [66.30, 193.75], I2 = 58.7%). The diagnostic odds ratio for nasal NO in identifying ECRS was 9.29 ([5.85, 14.75], I2 = 26.4%). The area under the summary receiver operating characteristic curve was 0.82. The correlation between sensitivity and false positive rate was 0.53, suggesting a lack of heterogeneity. Sensitivity, specificity, negative predictive value, and positive predictive value were 69% ([0.55, 0.79], I2= 77.0%), 83% ([0.73, 0.90], I 2 = 68.5%), 77% ([0.69, 0.83], I 2 = 50.1%), and 75% ([0.67, 0.82], I 2 = 41.5%), respectively. Conclusion: Nasal NO has the potential as a noninvasive diagnostic measure and endotype tool for ECRS. [ABSTRACT FROM AUTHOR]

Background: We investigated the role of perioperative intraoral glossopharyngeal nerve block to minimize postoperative pain in patients undergoing tonsillectomy through a meta‐analysis of the relevant literature. Methods: We retrieved eight studies from PubMed, Scopus, Embase, Web of Science, and Cochrane databases up to August 2023. We compared perioperative glossopharyngeal nerve block with a control group, in order to examine postoperative pain, analgesic use, and other postoperative morbidities. Results: Postoperative pain was significantly reduced at 1–4 h (SMD −1.26, 95% CI [−2.35; −0.17], I2 = 94.7%, P = 0.02) and 5–8 hours (SMD −1.40, 95% CI [−2.47; −0.34], I2 = 96.1%, p = 0.01) in the treatment groups compared to the control group. However, glossopharyngeal nerve block showed no efficacy in reducing pain or use of analgesic drugs after 12 h compared to the control group. The incidences of postoperative bleeding (OR 0.95, 95% CI [0.35; 2.52], I2 = 0.0%), local agent toxicity (OR 4.14, 95% CI [0.44; 38.63], I2 = 0.0%), nasal problems (OR 1.25, 95% CI [0.60; 2.61], I2 = 0.0%), postoperative nausea and vomiting (OR 1.35, 95% CI [0.78; 2.33], I2 = 0.0%), swallowing difficulty (OR 1.61, 95% CI [0.76; 3.42], I2 = 56.0%), and voice change (OR 3.11, 95% CI [0.31; 30.80], I2 = 0.0%) were not significantly different between the treatment and control groups. The treatment group showed higher prevalence of respiratory problems and dry mouth compared to control without statistical significance, but a significant increase in throat discomfort (p = 0.02). Conclusion: Intraoral glossopharyngeal nerve block for tonsillectomy did not significantly impact postoperative pain management and was associated with some adverse effects with increases in respiratory problems, dry mouth, and throat discomfort compared to controls. [ABSTRACT FROM AUTHOR]

Objectives: This study assessed the impact of cryoablation of the posterior nasal nerve on symptoms of rhinitis in individuals with allergic rhinitis (AR) and non‐allergic rhinitis (NAR). Data Sources: PubMed, SCOPUS, Embase, Web of Science, and Cochrane databases for studies published up to June 2023. Review Methods: Studies that evaluated the quality of life and rhinitis‐related symptom scores before and after cryotherapy treatment, as well as sham‐controlled studies, were included. Results: In total, 368 patients from seven studies were analyzed. Patients who underwent cryoablation showed a significant improvement in rhinitis‐related symptoms in both NAR and AR. In particular, the most significant improvement was observed in symptoms of rhinorrhea and congestion. Furthermore, cryoablation improved the disease‐specific quality of life evaluated using the Rhinoconjunctivitis Quality of Life Questionnaire. The rate of clinical improvement in the total nasal symptom score (total nasal symptom score [TNSS]; >30% reduction from baseline) after cryotherapy was 74%. The change in TNSS score significantly increased over time in NAR patients (p = 0.0041). Therefore, changes in the TNSS score after 12 months of cryotherapy treatment were greater in the NAR group than in the AR group (p = 0.0020), indicating that cryoablation is effective for both types of rhinitis and has better long‐term efficacy in NAR than in AR. Conclusions: Subjective symptom scores related to rhinitis, particularly for rhinorrhea and congestion, decrease after cryoablation of the posterior nasal nerve. Furthermore, the symptom improvement was greater in NAR than AR. Laryngoscope, 134:2502–2512, 2024 [ABSTRACT FROM AUTHOR]

Summary: Continuous positive airway pressure (CPAP) is the primary therapeutic modality for obstructive sleep apnea (OSA) management. However, despite efforts to encourage patients to comply with CPAP usage, long‐term adherence remains low. Consequently, surgical intervention for OSA is considered a secondary option for patients who exhibit non‐compliance with CPAP. Therefore, we conducted systematic review and meta‐analysis assessed the relative effectiveness of hypoglossal nerve stimulation (HNS) treatment and alternative surgical interventions for managing OSA. Five databases were searched. Studies were included if they measured polysomnography parameters and assessed sleep apnea‐related quality of life (Epworth Sleepiness Scale [ESS]) both before and after HNS, and compared these outcomes with control, CPAP, or airway surgery (uvulopalatopharyngoplasty, expansion sphincter pharyngoplasty, or tongue base surgery) groups. A total of 10 studies (2209 patients) met the inclusion criteria. Compared to other airway surgeries, the rates of post‐treatment apnea–hypopnea index (AHI) < 10 and < 15 events/h were significantly lower in the HNS group (odds ratio [OR] 5.33, 95% confidence interval [CI] 1.21–23.42; and 2.73, 95% CI 1.30–5.71, respectively). Additionally, postoperative AHI was significantly lower in the HNS group than in all other airway surgery groups (AHI: mean difference [MD] −8.00, 95% CI −12.03 to−3.97 events/h). However, there were no significant differences in the rate of post‐treatment AHI < 5 events/h (OR 1.93, 95% CI 0.74–5.06) or postoperative ESS score (MD 0.40, 95% CI−1.52 to 2.32) between the two groups. HNS is an effective option for selected patients with moderate‐to‐severe OSA and CPAP intolerance. [ABSTRACT FROM AUTHOR]

Objective s : To conduct a systematic review and meta‐analysis of published articles to assess the impact of inferior turbinate/meatus augmentation in patients diagnosed with empty nose syndrome (ENS). Data Sources: PubMed, Cochrane database, Embase, Web of Science, SCOPUS, and Google Scholar. Review Methods: Six databases were searched to December 2022. We retrieved studies evaluating improvements in refractory ENS‐related symptoms based on various patient‐reported outcome measures after inferior turbinate/meatus augmentation. Results: As a result of meta‐analysis, Sinonasal Outcome Test, Empty Nose Syndrome 6‐Item Questionnaire (ENS6Q), and depression scores were measured at 1 week; 1, 3, and 6 months; and later than 12 months after intervention for patients with ENS. All scores revealed significant symptom improvement. By reference to the minimal clinically important difference of the ENS6Q (6.25), inferior turbinate/meatus augmentation relieved the nasal symptoms of ENS in the long term. Although the improvements in anxiety scores at 1 week (0.4133 [−0.3366; 1.1633], 0.00, I2 = NA) and 1 month (0.4525 [−0.0529; 0.9579], I2 = 0.0%) were not statistically significant, the scores differed significantly at 3 months (0.7351 [0.4143; 1.0559], I2 = 28.4%), 6 months (0.8297 [0.6256; 1.0337], I2 = 37.2%), and longer than 12 months (0.7969 [0.4768; 1.1170], I2 = 0.0%). Conclusion: These data and analysis suggest that performing inferior turbinate/meatus augmentation on ENS patients may improve not only nasal symptom scores but also accompanying psychological problems such as anxiety and depression. Laryngoscope, 134:2005–2011, 2024 [ABSTRACT FROM AUTHOR]

Objectives: This study aimed to determine the efficacy of hypoglossal nerve stimulation (HGS) in the treatment of obstructive sleep apnea. Data Sources: PubMed, Cochrane database, Embase, Web of Science, SCOPUS, and Google Scholar. Review Methods: Five databases were reviewed to identify relevant studies that measured polysomnography parameters such as the apnea‐hypopnea index (AHI) and oxygen desaturation index, as well as quality of life and functional outcomes of sleep questionnaire scores, before and after HGS. Results: In total, 44 studies involving 8670 patients met the inclusion criteria. At 12 months after treatment, approximately 47%, 72%, and 82% of patients achieved AHI values of <5, < 10, and <15, respectively. The reported clinical success rates according to Sher criteria were 80% within 12 months and 73% between 12 and 36 months. While the favorable effects exhibited a gradual reduction up to 12 months postimplantation, they generally maintained a consistent level between the 12th and 36th months, as assessed by AHI < 5, <15, and success rate according to Sher criteria. Conclusion: HGS can enhance quality of life scores and polysomnography outcomes in obstructive sleep apnea patients. Although the positive effects gradually decreased until 12 months after implantation, they generally remained consistent between 12 and 36 months. [ABSTRACT FROM AUTHOR]

Simple Summary: We compared the diagnostic accuracy of conventional smears and liquid-based preparations for detecting thyroid lesions using fine-needle aspiration cytology. We reviewed 15,861 samples from 17 studies. There was no significant difference between conventional smears and liquid-based preparations in terms of diagnostic accuracy or the proportion of inadequate smears. SurePath outperformed ThinPrep in terms of diagnostic accuracy among the liquid-based preparations. Recommendations for one method over another should take cost, feasibility, and accuracy into account, necessitating additional research. Background: To compare conventional smears (CSs) and liquid-based preparations (LBPs) for diagnosing thyroid malignant or suspicious lesions. Methods: Studies in the PubMed, SCOPUS, Embase, Web of Science, and Cochrane database published up to December 2023. We reviewed 17 studies, including 15,861 samples. Results: The diagnostic odds ratio (DOR) for CS was 23.6674. The area under the summary receiver operating characteristic curve (AUC) was 0.879, with sensitivity, specificity, negative predictive value, and positive predictive value of 0.8266, 0.8668, 0.8969, and 0.7841, respectively. The rate of inadequate specimens was 0.1280. For LBP, the DOR was 25.3587, with an AUC of 0.865. The sensitivity, specificity, negative predictive value, and positive predictive value were 0.8190, 0.8833, 0.8515, and 0.8562. The rate of inadequate specimens was 0.1729. For CS plus LBP, the AUC was 0.813, with a lower DOR of 9.4557 compared to individual methods. Diagnostic accuracy did not significantly differ among CS, LBP, and CS plus LBP. Subgroup analysis was used to compare ThinPrep and SurePath. The DORs were 29.1494 and 19.7734. SurePath had a significantly higher AUC. Conclusions: There was no significant difference in diagnostic accuracy or proportion of inadequate smears between CS and LBP. SurePath demonstrated higher diagnostic accuracy than ThinPrep. Recommendations for fine-needle aspiration cytology should consider cost, feasibility, and accuracy. [ABSTRACT FROM AUTHOR]

Objective: Internal nasal valve dysfunction is a prevalent cause of nasal obstruction. This systematic review, along with a Meta‐analysis, evaluated the efficacy of temperature‐controlled radiofrequency device (RFD) treatment in alleviating nasal obstruction by rectifying nasal valve collapse. Data Sources: A comprehensive review of studies retrieved from PubMed, SCOPUS, Embase, Web of Science, and Cochrane databases (up to December 2022) was conducted. Review Methods: We included studies that evaluated the quality of life and nasal obstruction scores before and after RFD treatment. In addition, sham‐controlled studies were analyzed. Results: In total, 451 patients across 8 studies were included in the analysis. Patients who underwent RFD treatment reported a significantly enhanced quality of life 24 months after treatment compared to pretreatment scores. The rates of clinically improved states and positive responses regarding quality of life after treatment were 82% and 91%, respectively. Moreover, the disease‐specific quality of life, as assessed by the Nasal Obstruction Symptom Evaluation score, significantly improved. Conclusion: RFD may help improve nasal obstruction symptoms. Further randomized clinical studies on larger cohorts are essential to substantiate its efficacy in enhancing nasal valve function. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate the association between statin use and chronic rhinosinusitis (CRS). Design and Setting: Systematic review and meta‐analysis. The methodological quality of studies was assessed using the Newcastle–Ottawa scale. Participants: Patients with CRS. Main Outcome Measures: Pooled odds ratios (ORs) with 95% confidence interval (CIs) in analyses of studies that compared the prevalence of CRS, nasal polyp, difference of Lund‐Kennedy endoscopic score, Lund‐Mackay CT score and Sino‐nasal Outcome Test‐22. Results: The analysis included eight studies and 445 465 patients. Patients who used statins were at lower risk for CRS than those who did not (OR = 0.7457, 95% CI = 0.6629–0.8388, p < 0.0001, I2 = 0.0%). Patients with hyperlipidaemia were at higher risk for CRS than those with normal serum levels of lipid (OR = 1.3590, 95% CI = 1.2831–1.4394, p < 0.0001, I2 = 33.3%). However, there were no significant differences in the risk for nasal polyps between CRS patients using statins or not (OR = 1.0931, 95% CI = 0.7860–1.5202, p = 0.5968, I2 = 0.0%). Additionally, statin use was not related to Lund‐Kennedy endoscopic scores, Lund‐Mackay CT scores or sino‐nasal outcome test‐22 scores in CRS patients. Conclusion: The risk for CRS is lower in patients who use statins and those without hyperlipidaemia. [ABSTRACT FROM AUTHOR]

This study investigated the influence of hypoxic culture conditions on human nasal inferior turbinate-derived stem cells (hNTSCs), a subtype of mesenchymal stem cells (MSCs). It aimed to discern how hypoxia affected hNTSC characteristics, proliferation, and differentiation potential compared to hNTSCs cultured under normal oxygen levels. After obtaining hNTSCs from five patients, the samples were divided into hypoxic and normoxic groups. The investigation utilized fluorescence-activated cell sorting (FACS) for surface marker analysis, cell counting kit-8 assays for proliferation assessment, and multiplex immunoassays for cytokine secretion study. Differentiation potential—osteogenic, chondrogenic, and adipogenic—was evaluated via histological examination and gene expression analysis. Results indicated that hNTSCs under hypoxic conditions preserved their characteristic MSC phenotype, as confirmed by FACS analysis demonstrating the absence of hematopoietic markers and presence of MSC markers. Proliferation of hNTSCs remained unaffected by hypoxia. Cytokine expression showed similarity between hypoxic and normoxic groups throughout cultivation. Nevertheless, hypoxic conditions reduced the osteogenic and promoted adipogenic differentiation potential, while chondrogenic differentiation was relatively unchanged. These insights contribute to understanding hNTSC behavior in hypoxic environments, advancing the development of protocols for stem cell therapies and tissue engineering. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate the efficacy of topically applied tramadol in peritonsillar area for pain control and induction of perioperative morbidity in children undergoing adenotonsillectomy. Methods: Two authors independently searched the databases (MEDLINE, SCOPUS, and Cochrane databases) up to April 2022 for randomized controlled trials comparing the efficacy of an intraoperative peritonsillar administered tramadol with placebo or other agents only in pediatric patients. The outcomes were postoperative pain scores, time to take the first pain reducing drugs, and postoperative nausea/vomiting. Results: Our analysis was based on 17 trials. Peritonsillar administered tramadol significantly reduced postoperative pain at less than 20 minutes (SMD −1.5852, 95% CI [−2.3900; −0.7804]), 1 hour (SMD −1.5811, 95% CI [−2.3400; −0.8222]), 8 hours (SMD −1.0258, 95% CI [−1.8792; −0.1724]), 16 hours (SMD −0.8397, 95% CI [−1.4266; −0.2529]), and 1 day (SMD −1.0110, 95% CI [−1.5213; −0.5007]) and the time to take the first analgesic drug (SMD 1.6565, 95% CI [0.2838; 3.0293]) compared with the placebo. However, tramadol showed no significant difference on postoperative pain relief effects and the time to take the first analgesic drug compared to the other topical agents (bupivacaine, lidocaine, ketamine, and dexamethasone). Tramadol did not cause significant postoperative nausea and vomiting. Conclusions: This study demonstrated that intraoperatively applied topical tramadol could control postoperative pain and reduce the analgesic uptake compared with a control. However, the efficacy of tramadol in pain control was similar to other agents in pediatric adenotonsillectomy. [ABSTRACT FROM AUTHOR]

Objectives: Minimally invasive and remote surgical approaches for thyroid tumors have been developed primarily for cosmetic benefit. However, conventional meta‐analysis could not provide comparative data between new techniques. This network meta‐analysis would be able to provide data for clinicians and patients to compare cosmetic satisfaction and morbidity by comparing surgical methods. Data Sources: The PubMed, EMBASE, MEDLINE, SCOPUS, Web of Science, Cochrane Trials, and Google Scholar. Review methods: The nine interventions included minimally invasive video‐assisted thyroidectomy (MIVA), endoscopic and robotic bilateral axillo‐breast‐approach thyroidectomy (EBAB and RBAB, respectively), endoscopic and robotic retro‐auricular thyroidectomy (EPA and RPA, respectively), endoscopic or robotic transaxillary thyroidectomy (EAx and RAx, respectively), endoscopic and robotic transoral approaches (EO and RO, respectively), and a conventional thyroidectomy. We recorded the operative outcomes and perioperative complications; pairwise and network meta‐analyses were performed. Results: EO, RBAB, and RO were associated with good patient cosmetic satisfaction. EAx, EBAB, EO, RAx, and RBAB were associated with significantly more postoperative drainage than the other methods. Postoperatively, more flap problems and wound infections were found in the RO than control group, and more transient vocal cord palsy was found in the EAx and EBAB groups. MIVA ranked first in terms of operative time, postoperative drainage amount, postoperative pain, and hospitalization, but cosmetic satisfaction was low. EAx, RAx, and MIVA ranked higher than the other approaches in terms of operative bleeding. Conclusion: It was confirmed that minimally invasive thyroidectomy achieves high cosmetic satisfaction and is not inferior to conventional thyroidectomy in terms of surgical results or perioperative complications. Laryngoscope, 133:2470–2479, 2023 [ABSTRACT FROM AUTHOR]

Background and Objectives: Through a comprehensive meta-analysis of the pertinent literature, this study evaluated the utility and efficacy of perioperative infraorbital and/or infratrochlear nerve blocks in reducing postoperative pain and related morbidities in patients undergoing septorhinoplasty. Materials and Methods: We reviewed studies retrieved from the PubMed, SCOPUS, Embase, Web of Science, and Cochrane databases up to August 2023. The analysis included a selection of seven articles that compared a treatment group receiving perioperative infraorbital and/or infratrochlear nerve blocks with a control group that either received a placebo or no treatment. The evaluated outcomes covered parameters such as postoperative pain, the amount and frequency of analgesic medication administration, the incidence of postoperative nausea and vomiting, as well as the manifestation of emergence agitation. Results: The treatment group displayed a significant reduction in postoperative pain (mean difference = −1.7236 [−2.6825; −0.7646], I2 = 98.8%), as well as a significant decrease in both the amount (standardized mean difference = −2.4629 [−3.8042; −1.1216], I2 = 93.0%) and frequency (odds ratio = 0.3584 [0.1383; 0.9287], I2 = 59.7%) of analgesic medication use compared to the control. The incidence of emergence agitation (odds ratio = 0.2040 [0.0907; 0.4590], I2 = 0.0%) was notably lower in the treatment group. The incidence of postoperative nausea and vomiting (odds ratio = 0.5393 [0.1309; 2.2218], I2 = 60.4%) showed a trend towards reduction, although it was not statistically significant. While no adverse effects reaching statistical significance were reported in the analyzed studies, hematoma (proportional rate = 0.2133 [0.0905; 0.4250], I2 = 76.9%) and edema (proportional rate = 0.1935 [0.1048; 0.3296], I2 = 57.2%) after blocks appeared at rates of approximately 20%. Conclusions: Infraorbital and/or infratrochlear nerve blocks for septorhinoplasty effectively reduce postoperative pain and emergence agitation without notable adverse outcomes. [ABSTRACT FROM AUTHOR]

Background: There have been reports investigating the use of olfactory training in olfactory dysfunction after COVID-19. Objective: We evaluated the effect of olfactory training on the olfactory dysfunction of patients infected with COVID-19. Methods: We searched PubMed, EMBASE, the Web of Science, the Cochrane database, SCOPUS, and Google Scholar up to May 2022. We retrieved studies that compared the extents of olfactory dysfunction before and after olfactory training. We performed a subgroup analysis by the duration of olfactory dysfunction. Results: The olfactory score after olfactory training (standard mean difference [SMD] = 1.0830, 95% confidence interval [CI] [0.6416; 1.5245], P <.0001, I2 = 90.4%) was higher than that before training. The olfactory dysfunction rate differed significantly (OR = 0.0232, 95% CI [0.0052; 0.1044], P <.0001, I2 = 63.1%) before and after olfactory training. On subgroup analysis, although patients with both acute (onset < 30 days prior) and chronic (onset > 30 days prior) olfactory dysfunction evidenced clinically significant improvements, training during acute dysfunction (compared to acute dysfunction) increased the olfactory score to a greater extent (SMD = 1.7779, 95% CI [1.0077; 2.5481] vs 0.6928 [0.2143; 1.1712], P = 0.0190). Moreover, as a result of subgroup analysis by dividing the included studies into2 using 2-month training period as standard, there was no statistically significant difference in the effect of the training period in the included study. Conclusion: Olfactory training improved olfactory disorders caused by COVID-19. Such training was effective in both the acute and chronic phases. [ABSTRACT FROM AUTHOR]

Objective: To assess the diagnostic efficacy of various imaging methods in patients with suspected cerebrospinal fluid (CSF) rhinorrhea. Data Sources: The PubMed, EMBASE, SCOPUS, Web of Science, Cochrane Trials, and Google Scholar databases were searched up to December 2021. Review Methods: Diagnostic accuracy was compared among seven radiological methods: computed tomography (CT), CT cisternography (CTC), magnetic resonance imaging (MRI), magnetic resonance cisternography (MRC), CT + MRI, radionuclide cisternography, and intrathecal gadolinium (Gd)‐MRC. Sensitivity, specificity, and accuracy were used as outcomes of the analysis. Both a traditional pairwise meta‐analysis and a network meta‐analysis were performed. Results: Twenty‐three trials were included in the analysis. The results of a network meta‐analysis performed on a network consisting of seven diagnostic methods showed that all imaging modalities had greater diagnostic accuracy than CT, with the exception of CTC, which had lower sensitivity. Only intrathecal Gd‐MRC was significantly superior to other imaging methods with regard to sensitivity and accuracy. Gd‐MRC also showed the greatest surface under the cumulative ranking curve values for all of the outcomes (sensitivity: 0.9200; specificity: 0.8364; accuracy: 0.8920). Conclusion: This network meta‐analysis demonstrates that intrathecal Gd‐MRC is the most useful diagnostic method to detect CSF rhinorrhea. Laryngoscope, 133:1281–1287, 2023 [ABSTRACT FROM AUTHOR]