Prognostic importance of modified geriatric nutritional risk index in oral cavity squamous cell carcinoma.

We probed the associations of preoperative modified geriatric nutritional risk index (mGNRI) values with prognosis in patients receiving surgery for oral cavity squamous cell carcinoma (OCSCC). This retrospective study analyzed the clinical data of 333 patients with OCSCC and undergoing surgery between 2008 and 2017. The preoperative mGNRI was calculated using the following formula: (14.89/C-reactive protein level) + 41.7 × (actual body weight/ideal body weight). We executed receiver operating characteristic curve analyses to derive the optimal mGNRI cutoff and employed Kaplan-Meier survival curves and Cox proportional hazard model to probe the associations of the mGNRI with overall survival (OS) and disease-free survival (DFS). The optimal mGNRI cutoff was derived to be 73.3. We noted the 5-year OS and DFS rates to be significantly higher in the high-mGNRI group than in the low-mGNRI group (both p < 0.001). A preoperative mGNRI below 73.3 was independently associated with unfavorable DFS and OS. A mGNRI-based nomogram was constructed to provide accurate OS predictions (concordance index, 0.781). Hence, preoperative mGNRI is a valuable and cost-effective prognostic biomarker in patients with OCSCC. Our nomogram facilitates the practical use of mGNRI and offers individualized predictions of OS.

Prognostic utility of the geriatric nutritional risk index for head and neck cancer: Systematic review and meta-analysis.

We conducted a systematic review of the literature to assess the potential prognostic utility of geriatric nutritional risk index (GNRI) for head and neck cancer (HNC). We selected studies and extracted data after searching the Cochrane Library, EMBASE, and PubMed databases. The associations between GNRI and survival outcomes were explored by calculating hazard ratios (HRs) and 95% confidence intervals (CIs) through a random-effects meta-analysis. We included 11 studies that involved 2887 patients with HNC. The combined HR demonstrated significant associations of low GNRI with unfavorable progression-free survival (HR = 1.87, 95% CI = 1.32-2.65, p < 0.001) and overall survival (HR = 3.04, 95% CI = 2.30-4.03, p < 0.001). The association between the GNRI and overall survival persisted across various subgroups. The GNRI could serve as a valuable prognostic biomarker for patients with HNC. Low GNRI scores are significantly associated with unfavorable survival outcomes.

Correction: Masticatory muscle index for indicating skeletal muscle mass in patients with head and neck cancer.

[This corrects the article DOI: 10.1371/journal.pone.0251455.].

Nasal Patency Across Seated, Supine, and Recumbent Postures in Individuals With and Without Allergic Rhinitis.

Objectives: This study aimed to investigate the effects of seated, supine, and recumbent postures on nasal resistance in individuals with allergic rhinitis (AR) and healthy controls, which has not been investigated in the past. Methods: A visual analog scale (VAS) assessed subjective nasal obstruction, while acoustic rhinometry and video endoscopy provided objective measures. Sixty participants, comprising 30 AR patients and 30 healthy controls, were evaluated across 4 postures without decongestion: seated, supine, left recumbent, and right recumbent. Results: In patients with AR, we noted no significant changes in subjective nasal blockage under various postures (all P > .18). However, significant reductions of minimal cross-sectional area (mCSA) were found (seated vs supine, P = .014; seated vs left recumbent, P = .001; seated vs right recumbent, P < .001) and significant increases in the inferior turbinate hypertrophy were observed on the dependent side of the nose when in recumbent posture (right nose: seated vs right recumbent, P = .013; left nose: seated vs left recumbent, P = .003). On the contrary, healthy controls experienced increased subjective nasal obstruction (VAS scores: seated vs supine, P < .001; seated vs left recumbent, P = .003; seated vs right recumbent, P < .001), reductions in mCSA (seated vs supine, P = .002; seated vs right or left recumbent, both P = .001), and increased inferior turbinate hypertrophy on the dependent side of the nose (right nose: seated vs right recumbent, P = .003; left nose: seated vs left recumbent, P = .006). Conclusions: Healthy controls reported better nasal patency when shifting from supine or recumbent to more upright or less gravity-dependent seated postures, which was further supported by objective examinations. On the contrary, despite patients with AR not subjectively perceiving increased nasal patency while adopting more upright postures, objective evaluations demonstrated an improvement in their nasal airflow in these less gravity-dependent postures.Level of Evidence: 4.

Microbial Analysis in Chronic Rhinosinusitis Patients with Chronic Kidney Disease and End-Stage Renal Disease.

INTRODUCTION: This study aimed to elucidate the bacterial profile of chronic rhinosinusitis (CRS) in patients with end-stage renal disease (ESRD) and chronic kidney disease (CKD) compared with nonrenal patients, guiding antibiotic selection for clinicians. METHODS: We retrospectively analyzed 13,906 inpatients from the Chang Gung Research Database who underwent sinus surgery (2004-2018). Patients were categorized into ESRD-CRS, CKD-CRS, and non-CKD-CRS based on the estimated glomerular filtration rate. Bacterial cultures from surgical samples were classified as facultative anaerobes or aerobes (e.g., Klebsiella pneumoniae [KP], Pseudomonas aeruginosa [Ps.a]), anaerobes, and fungi and ranked by prevalence. RESULTS: Data from 47 ESRD-CRS, 230 CKD-CRS, and 13,123 non-CKD-CRS patients were analyzed. In ESRD-CRS, the predominant species were KP (31.6%), Ps.a (21.1%), and Coagulase-negative Staphylococcus (CoNS, 15.8%). CKD-CRS showed Staphylococcus epidermidis (27.7%), CoNS (20.5%), and Ps.a (20.5%). Non-CKD-CRS had Staphylococcus epidermidis (29.8%), CoNS (25.0%), and Staphylococcus aureus (15.5%). For anaerobes, ESRD-CRS was dominated by Fusobacterium nucleatum (10.5%) and Peptostreptococcus micros (10.5%), whereas CKD-CRS and non-CKD-CRS showed Propionibacterium acnes as a primary strain (14.5% and 28.7%, respectively). CONCLUSION: For CRS in ESRD, antibiotics targeting KP and Fusobacterium nucleatum are recommended. In CKD-CRS, a focus on Staphylococcus epidermidis and Propionibacterium acnes is suggested. LEVEL OF EVIDENCE: 4 Laryngoscope, 134:3499-3507, 2024.

Survival-weighted quality of life profiles in patients treated for laryngeal and hypopharyngeal cancers.

Objectives: This study assessed functional outcomes and quality of life (QoL) in the long term in individuals treated for laryngohypopharyngeal cancer (LHC) by estimating their life expectancy (LE), survival-weighted psychometric scores (SWPSs), and quality-adjusted LE (QALE). Materials and methods: To estimate survival outcomes, we retrospectively reviewed the data of 1576 patients treated for primary LHC between January 2010 and December 2018 and followed them until death or December 2020. We also prospectively collected QoL and functional data between October 2013 and November 2022 from 232 patients by administering the Taiwanese Chinese versions of the QoL Questionnaire Core 30, Head and Neck 35, and EQ-5D-3L. To estimate LE, we employed linear extrapolation of a logit-transformed curve. We calculated QALE and SWPSs by combining the QoL data with the LE results. Results: We estimated the LE of the patients with LHC to be 7.8 years and their loss of LE to be 15.7 years. The estimated QALE was 7.0 QALYs, with a loss of QALE of 16.5 QALYs. Lifetime impairment durations were estimated for cognitive (4.9 years), physical (4.2 years), emotional (3.4 years), social (3.4 years), and role functions (2.7 years). We estimated the durations of problems related to swallowing, speech, and teeth to be 6.2, 5.6, and 4.8 years, respectively. The patients were expected to be dependent on feeding tubes for 1.2 years. Conclusions: Patients with LHC experience significant reductions in both LE and QALE. SWPSs may constitute a valuable tool for obtaining subjective information regarding how LHC affects multifaceted QoL outcomes.

Prognostic utility of preoperative platelet-to-albumin ratio in surgically treated oral cavity cancer patients.

BACKGROUND: This study aimed to explore the prognostic utility of the preoperative platelet-to-albumin ratio (PAR) among patients with oral cavity squamous cell carcinoma (OSCC). METHODS: We retrospectively reviewed of 355 patients with surgically-treated OSCC between 2008 and 2017. The optimal PAR cutoff for patient stratification was determined through X-tile analysis. Prognostic variables for disease-free survival (DFS) and overall survival (OS) were identified using Cox proportional hazards models. We developed a PAR-based nomogram to predict personalized OS. RESULTS: We determined the optimal PAR cutoff to be 7.45. A PAR of ≥7.45 was an independent negative prognostic factor for DFS and OS (hazard ratio = 1.748 and 2.386; p = 0.005 and p < 0.001, respectively). The developed nomogram demonstrates the practical utility of PAR and accurately predicts personalized OS. CONCLUSIONS: The preoperative PAR is a promising and cost-effective prognostic biomarker for patients with surgically-treated OSCC; the PAR-based nanogram accurately predicts OS for such patients.

Sublabial excision versus transnasal endoscopic marsupialization for nasolabial cysts: A systematic review and meta-analysis.

OBJECTIVES: To compare the intraoperative and postoperative outcomes of sublabial excision and transnasal endoscopic marsupialization, the two primary surgical approaches for nasolabial cysts. DESIGN AND SETTING: A comprehensive meta-analysis of studies identified from PubMed, Embase, and the Cochrane Library. PARTICIPANTS: Patients diagnosed with nasolabial cysts who underwent surgical treatment. MAIN OUTCOME MEASURES: Operative time, postoperative pain, overall postoperative complications, admission rate, length of hospital stay, use of general anaesthesia, medical costs, and recurrence rate. RESULTS: The pooled analysis revealed that the transnasal endoscopic marsupialization group had shorter operative time (mean differences [MD], -32.51; 95% confidence interval [CI], -38.52 to -26.51), reduced postoperative pain (MD, -4.25; 95% CI, -7.62 to -0.89), fewer overall postoperative complications (risk difference [RD], -0.68; 95% CI, -0.90 to -0.46), lower admission rates (RD, -0.86; 95% CI, -1.11 to -0.61), shorter hospital stays (MD, -1.74; 95% CI, -2.58 to -0.89), decreased use of general anaesthesia (RD, -0.40; 95% CI, -0.76 to -0.03), and reduced medical costs (MD, -229.69; 95% CI, -338.64 to -120.75). The recurrence rate between the two groups showed no significant difference (RD, -0.01; 95% CI, -0.05 to 0.04). CONCLUSION: Transnasal endoscopic marsupialization presents as a promising alternative to sublabial excision in the treatment of nasolabial cysts. It offers advantages like reduced operative time, decreased postoperative pain, fewer complications, lower admission rates, shorter hospital stays, diminished need for general anaesthesia, and cost savings. Clinicians can leverage these findings to select the most suitable surgical approach for their patients.

Research progress on the manifestations and prognosis of neonatal lupus erythematosus in various systems / 中国当代儿科杂志

Neonatal lupus erythematosus (NLE) is caused by the transmission of maternal anti-Ro/SSA antibodies, anti-La/SSB antibodies, and other autoantibodies to the fetus through the placenta. Usually, with the disappearance of autoantibodies in the children's body, abnormal changes in the mucocutaneous, blood system, and digestive system can spontaneously subside, but the damage to various systems caused by autoantibodies may persist for a long time. This article provides a comprehensive review of the manifestations and prognosis of NLE in various systems, including mucocutaneous, blood system, circulatory system, nervous system, digestive system, respiratory system, aiming to provide reference for clinical work.

The anti-SARS-CoV-2 effect and mechanism of Chiehyuan herbal oral protection solution.

The Chiehyuan herbal oral protection solution (GB-2) is a herbal mixture commonly utilized in Taiwan for combating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as per traditional Chinese medicine practices. This study assessed the clinical impact of GB-2 through prospective clinical trials. With twice-daily use for a week, GB-2 was shown to diminish the expression of angiotensin-converting enzyme 2 (ACE2) in oral mucosal cells. Moreover, after two weeks of use, it could reduce transmembrane protease, serine 2 (TMRPSS2) expression in these cells. Additionally, in vitro experiments demonstrated that GB-2 lessened the entry efficiency of the Omicron, L452R-D614G, T478K-D614G, and L452R-T478K-D614G variants of the SARS-CoV-2 pseudotyped lentivirus. It also impeded the interaction between ACE2 and the receptor-binding domain (RBD) presenting N501Y-K417N-E484A-G339D-Q493R-G496S-Q498R and L452R-T478K mutations. Glycyrrhizic acid, a major compound in GB-2, also hindered the entry of the Omicron variant (BA.1) of the SARS-CoV-2 pseudotyped lentivirus by obstructing the binding between ACE2 and the RBD presenting the N501Y-K417N-E484A-G339D-Q493R-G496S-Q498R mutation. To sum up, these findings suggest that GB-2 can decrease ACE2 and TMPRSS2 expression in oral mucosal cells. Both glycyrrhizic acid and GB-2 were found to reduce the entry efficiency of the Omicron variant (BA.1) of the SARS-CoV-2 pseudotyped lentivirus and block the binding between ACE2 and the RBD with the N501Y-K417N-E484A-G339D-Q493R-G496S-Q498R mutation. This evidence implies that GB-2 might be a potential candidate for further study as a preventative measure against SARS-CoV-2 infection.

Prognostic Utility of Neck Lymph Node-to-Primary Tumor Standardized Uptake Value Ratio in Oral Cavity Cancer.

We investigated the prognostic utility of preoperative neck lymph node-to-primary tumor maximum standardized uptake value ratios (NTRs) in oral cavity squamous cell carcinoma (OSCC). We retrospectively reviewed the medical records of 141 consecutive patients who were diagnosed as having OSCC and had received fluorodeoxyglucose-positron emission tomography within 2 weeks prior to radical surgery between 2009 and 2018. To determine the optimal NTR cutoff, receiver operating characteristic analysis for overall survival (OS) was executed. The NTR's prognostic value for disease-free survival (DFS) and OS were determined through Cox proportional hazards analysis and the Kaplan-Meier method. We determined the median (range) follow-up duration to be 35.2 (2.1-122.4) months. The optimal NTR cutoff was 0.273, and patients with a higher NTR (≥0.273) exhibited significantly worse DFS and OS (p = 0.010 and 0.003, respectively). A higher NTR (≥0.273) predicted poorer DFS (hazard ratio: 2.696, p = 0.008) and OS (hazard ratio: 4.865, p = 0.003) in multivariable analysis. We created a nomogram on the basis of the NTR, and it could accurately predict OS (concordance index: 0.774). Preoperative NTRs may be a useful prognostic biomarker for DFS and OS in patients with OSCC who have undergone surgery. NTR-based nomograms may also be helpful prognostic tools in clinical trials.

Nasal Patency in Sitting, Supine, and Prone Positions in Individuals with and without Allergic Rhinitis.

(1) Background: Physiological changes in nasal patency in response to posture contribute to sleep-related problems. Previously, we reported that the supine and prone positions cause a significant decrease in nasal patency in subjective and objective assessments of healthy individuals. Therefore, we conducted a study to evaluate the effect of posture on nasal patency in patients with allergic rhinitis (AR); (2) Methods: The present study comprised 30 patients diagnosed with AR and 30 healthy subjects without nasal disease (non-AR). Changes in nasal patency were evaluated in the sitting, supine, and prone positions. We used the visual analog scale to evaluate subjective nasal blockage. Acoustic rhinometry and endoscopy were used to objectively measure changes in nasal patency; (3) Results: In the non-AR group, the prone position had a significant effect on subjective nasal blockage compared with the sitting position, with significant decreases in the minimal cross-sectional area (mCSA) measured by acoustic rhinometry. Furthermore, endoscopy demonstrated a significantly increased inferior turbinate hypertrophy in the non-AR group. In the AR group, there was no statistical difference in subjective nasal blockage symptoms between the different positions. However, in objective examinations (acoustic rhinometry and endoscopy), the prone position showed significantly decreased nasal patency; (4) Conclusions: In patients with AR, subjective nasal blockage did not significantly increase in the supine or prone position. Endoscopy demonstrated increased inferior turbinate hypertrophy in supine and prone positions resulting in a significant reduction in nasal cavity mCSA, indicating an objective reduction in nasal patency.

Utility of modified Glasgow prognostic score for head and neck squamous cell carcinoma: Systematic review and meta-analysis.

Whether the modified Glasgow prognostic score (mGPS) is useful for patients with head and neck squamous cell carcinoma (HNSCC) remains controversial. An electronic database search on EMBASE, PubMed, and the Cochrane Library from inception to 30 June 2022 was performed for study selection and data extraction. The associations between the mGPS and survival outcomes were evaluated using a random-effects meta-analysis and expressed as pooled hazard ratios (HRs) and 95% CIs. We included 11 studies involving a total of 2017 patients with HNSCC. A higher mGPS was associated with poorer progression-free survival (HR = 2.39, 95% CI 1.69-3.38), overall survival (HR = 2.40, 95% CI 1.94-2.98), disease-specific survival (HR = 2.57, 95% CI 1.71-3.88), and disease-free survival (HR = 2.67, 95% CI 1.51-4.73, all p ≤ 0.001) in HNSCC. The mGPS can function as a valid prognostic biomarker for patients diagnosed as having HNSCC.

A Nomogram Incorporating Neutrophil-to-Lymphocyte Ratio and Squamous Cell Carcinoma Antigen Predicts the Prognosis of Oral Cancers.

We introduced a novel squamous cell carcinoma inflammatory index (SCI) and explored its prognostic utility for individuals with operable oral cavity squamous cell carcinomas (OSCCs). We retrospectively analyzed data from 288 patients who were given a diagnosis of primary OSCC from January 2008 to December 2017. The SCI value was derived by multiplying the serum squamous cell carcinoma antigen and neutrophil-to-lymphocyte ratio values. We appraised the associations of the SCI with survival outcomes by performing Cox proportional hazards and Kaplan-Meier analyses. We constructed a nomogram for survival predictions by incorporating independent prognostic factors in a multivariable analysis. By executing a receiver operating characteristic curve analysis, we identified the SCI cutoff to be 3.45, and 188 and 100 patients had SCI values of <3.45 and ≥3.45, respectively. The patients with a high SCI (≥3.45) were associated with worse disease-free survival and overall survival than those with a low SCI (<3.45). An elevated preoperative SCI (≥3.45) predicted adverse overall survival (hazard ratio [HR] = 2.378; p < 0.002) and disease-free survival (HR = 2.219; p < 0.001). The SCI-based nomogram accurately predicted overall survival (concordance index: 0.779). Our findings indicate that SCI is a valuable biomarker that is highly associated with patient survival outcomes in OSCC.

Prognostic impact of the hemoglobin-albumin-lymphocyte-platelet score in patients with oral cavity cancer undergoing surgery.

BACKGROUND: We aimed to probe the hemoglobin-albumin-lymphocyte-platelet (HALP) score's prognostic value in oral cavity squamous cell carcinoma (OSCC). METHODS: Medical data of 350 patients with primary operated OSCC were retrospectively reviewed. We derived the optimal HALP cutoff by executing receiver operating characteristic curve analysis, and patients were then grouped based on this cutoff value. Cox proportional hazards model were used to discover survival outcome-associated factors. RESULTS: We derived the optimal HALP cutoff as 35.4. A low HALP score (<35.4) predicted poorer overall and disease-free survival (hazard ratio: 2.29 and 1.92, respectively; both p < 0.001) and was significantly associated with OSCC aggressiveness. We established a HALP-based nomogram that accurately predicted overall survival (concordance index: 0.784). CONCLUSION: The HALP score may be a useful prognostic biomarker in patients with OSCC undergoing surgery, and the HALP-based nomogram can be a promising prognostic tool in clinical setting.

Chemical Burn-Induced Corrosive Epiglottitis in an Elderly Patient with Major Depression.

Acute epiglottitis (AE) is a potential emergency of the respiratory tract caused mainly by bacterial infection. However, nonbacterial infection causes, such as corrosive injuries, may result in death due to gastrointestinal perforation if a timely diagnosis is not available. We report the case of an elderly patient with an acute melancholic episode who encountered corrosive epiglottitis (CE) caused by accidental ingestion of hydrochloric acid and compare the features of CE and AE, including the immediate onset of symptoms, normal findings on blood tests, and endoscopy revealing pale swollen epiglottitis. This case can prove to be an important reference for clinicians for differential diagnosis, especially when treating epiglottitis in patients with psychiatric disorders and unclear expression.

Low Pretreatment Albumin-to-Globulin Ratios Predict Poor Survival Outcomes in Patients with Head and Neck Cancer: A Systematic Review and Meta-analysis.

Background: Studies have indicated that a low albumin-to-globulin ratio (AGR) before treatment is linked to poor prognosis of many cancers, but the prognostic impact of AGR remains controversial in head and neck cancer (HNC). This meta-analysis examined the prognostic value of AGR in HNC. Methods: We systematically searched the Embase, PubMed, and Cochrane library for relevant articles from inception to July 22, 2022. Studies conducted from 2000 to 2022 exploring the prognostic value of AGR in HNC were retrieved. We employed a random-effects model and calculated pooled hazard ratios (HRs) with corresponding 95% confidence intervals (CIs) to examine the associations of AGR with survival outcome. Results: Our analysis included nine studies involving 3211 patients with HNC. The pooled results revealed significant associations between low pretreatment AGRs and poor disease-free survival (HR = 1.97, 95% CI 1.58-2.45, p < 0.001), distant metastasis-free survival (HR = 1.64, 95% CI 1.25-2.16, p < 0.001), overall survival (HR = 2.18, 95% CI 1.65-2.88, p < 0.001), T3-T4 status (OR = 2.22, 95% CI 1.43-3.44, p < 0.001), stage III-IV disease (OR = 2.62, 95% CI 1.62-4.23, p < 0.001), and lymph node metastasis (OR = 1.95, 95% CI 1.29-2.82, p = 0.001) in patients with HNC. Conclusion: AGR can serve as a prognostic biomarker in managing HNC, and a low pretreatment AGR is strongly associated with adverse survival outcomes and advanced cancer status. Additional large-scale prospective trials must be conducted to assess the validity of our findings.

6-shogaol is a potential treatment for Head and Neck Squamous Cell Carcinoma.

Objective: Natural products in diet have shown a potential role in the prevention and treatment of cancer. Ginger (Zingiber officinale Roscoe) is a great candidate because of its properties of anti-inflammatory, antioxidant, and anti-cancer, but little is known about its effect on head and neck cancer. 6-Shogaol is an active compound derived from Ginger. Thus, this study aimed to investigate the possible anticancer effects of 6-shogaol, a major ginger derivate, on head and neck squamous cell carcinomas (HNSCCs) and the underlying mechanisms. Material and Methods: Two HNSCC cell lines, SCC4 and SCC25, were used in this study. Both SCC4 and SCC25 cells were kept as control or treated with 6-shogaol for 8 and 24 hours and then the cell apoptosis and cell cycle progression of treated cells were examined by PI and Annexin V-FITC double stain and flow cytometry analysis. The Cleaved caspase 3, phosphorylations of ERK1/2 and p38 kinases were examined by Western blot analysis. Results: The results showed that 6-shogaol significantly initiated the G2/M phase arrest of the cell cycle and apoptosis to inhibit the survival of both cell lines. Moreover, these responses could be regulated by ERK1/2 and p38 signaling. And, finally, we also demonstrated that 6-shogaol could enhance the cytotoxicity of cisplatin in HNSCC cells. Conclusion: Our data provided new insights to understand the potential pharmaceutical efficacy of a ginger derivate, 6-shogaol, in antagonizing HNSCC survival. The present study suggests that 6-shogaol is a potential novel candidate for anti-HNSCCs therapy.

Localized Amyloidosis of Bilateral Palatine Tonsils Mimicking Tonsillolithiasis.

A rare disease called localized tonsillar amyloidosis can cause serious problems with airway patency in severe cases. This was the case with an elderly man who experienced difficulty breathing and swallowing due to enlarged palatine tonsils. The physical and imaging findings suggested tonsillolithiasis, and the patient underwent bilateral tonsillectomy. The diagnosis of amyloidosis was confirmed with histopathological examination using Congo red staining. Surgical intervention and careful follow-up care can be effective in these cases, which generally have a good prognosis.

Effects of Supine and Prone Positions on Nasal Patency in Healthy Individuals.

OBJECTIVES: Supine position reduces nasal patency compared with that in the sitting position; however, data on the effects of prone position on nasal patency is lacking. METHODS: We assessed the nasal patency of 30 healthy individuals without upper respiratory tract disorders by using visual analog scale (VAS) score and acoustic rhinometry in 7 positions: sitting; frontal, right, and left supine; and frontal, right, and left prone. RESULTS: According to the VAS scores, compared with that in the sitting position, both the supine and prone positions significantly increased subjective nasal obstruction (P < .001). The prone position had a more significant effect than did the supine position (P = .017). The results of minimal cross-sectional area measured through acoustic rhinometry demonstrated that both the supine and prone positions reduced the nasal patency significantly, but without significant differences between the effects of prone and supine positions (P = .794). CONCLUSION: This is the first study to elucidate that the prone position can significantly reduce the nasal patency in healthy individuals through subjective and objective assessments. LEVEL OF EVIDENCE: IV.