A huge coronary artery aneurysm with ST-elevation myocardial infarction: A case report and review of literature.

Background: Giant coronary artery aneurysms (GCAA), are rare findings often discovered incidentally in adults. GCAAs are defined by a significant enlargement of coronary arteries, posing a heightened risk of myocardial infarction and thrombosis. Case presentation: A 52-year-old male known case of ischemic heart disease (IHD), presented with chest pain and signs of anterior ST-elevation MI (STEMI). He had a history of MI six years ago and was on a medical regimen. Coronary angiography revealed a huge aneurysm (4.8∗8.2mm) in the left anterior descending artery (LAD) and ectasia in other arteries. Surgical management via coronary artery bypass graft (CABG) was pursued, successfully addressing the aneurysm. Conclusion: Recent advancements have improved our understanding and imaging capabilities for coronary artery aneurysms (CAAs). Treatment options include medical therapy, percutaneous coronary intervention, or surgery, with decisions tailored to individual cases. Standardized treatment protocols await clarification through further research, including randomized controlled trials.

A Systematic Review on the Role of Neutrophil to Lymphocyte Ratio in Limb Ischemia.

OBJECTIVES: Limb ischemia is a severe vascular condition that can lead to critical complications, endangering both limbs and lives. The goal of this research was to explore the role of Neutrophil to lymphocyte ratio (NLR) in limb ischemia. METHODS: From inception to June 8, 2022, PubMed/MEDLINE, ISI Web of Science, and Scopus were searched for papers comparing NLR in limb ischemia to healthy individuals. RESULTS: Finally, a total of 23 studies were included in the review. There was a direct link between NLR and critical limb ischemia (CLI) development in peripheral arterial disease (PAD) patients. Elevated NLR levels predict a higher risk of CLI among PAD patients. Also, it was concluded that NLR is a dependable predictor of survival in patients with limb ischemia, and higher NLR readings are linked to decreased survival rates. Moreover, the risk of amputation is related to the level of NLR in CLI patients. However, based on the data, NLR is not a reliable indicator of sarcopenia in CLI patients. More research is needed to determine the relationship between NLR and response to treatment in CLI patients. Also, we recommend investigating the effect of each treatment on NLR level in these patients. CONCLUSIONS: Our results provide evidence that NLR level is associated with risk of amputation and mortality in patients with limb ischemia. It is a promising biomarker that can be easily incorporated into clinical practice to assist in the prediction and prevention of CLI.

Diagnostic and prognostic role of NLR in testicular cancer.

Background: To summarize the results of available studies for investigating the role of neutrophil to lymphocyte ratio (NLR) in testicular cancer (tCa). Methods: The search was conducted on PubMed, Scopus, and Web of Science up to November 21, 2021. Finally, a total of 31 studies were included in this review. Results: NLR was higher in tCa patients compared to healthy controls and benign testis pathologies, and decreased significantly after orchiectomy. An elevated NLR predicts poor prognosis, advanced stage, presence of nodal or distant metastases, contralateral tumor development, lower time-to-cancer specific death, worse OS, and poorer response to chemotherapy. However, NLR could not differentiate between seminomas and non-seminomatous tCa. Discussion: NLR has a significant diagnostic and prognostic value in tCa.

Relationship between NLR and penile squamous cell carcinoma: a systematic review and meta-analysis.

OBJECTIVE: We conducted this study to summarize the results of studies reporting the role of NLR (neutrophil to lymphocyte ratio) in PSCC (penile squamous cell carcinoma). METHODS: This meta-analysis was conducted using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) criteria. A systematic search was conducted on PubMed, Scopus, and web of science up to March 10, 2023. Fourteen studies were included in the review. The NOS (Newcastle-Ottawa Scale) was used to determine the quality of the included studies. This meta-analysis was conducted on the studies reporting the relationship between NLR and survival using HR (hazard ratio) and 95% CI (confidence interval). RESULTS: There was a significant association between NLR levels and the prognosis, nodal stage, and anatomical tumor stage of PSCC patients. In the meta-analysis of the association of NLR with survival, NLR level was significantly associated with lower cancer-specific survival (HR = 3.51, 95% CI = 2.07-5.98, p < 0.001) and lower disease-free survival (HR = 2.88, 95% CI = 1.60-5.20, p < 0.001). However, NLR was found to have no association with the stage, grade, location, and size of the tumor. CONCLUSION: NLR has a significant diagnostic and prognostic value in PSCC.

The Harsh Reality: Outcomes of Patients With Operatively Managed Lung Injuries.

INTRODUCTION: Most traumatic lung injuries are managed non-operatively. There is a paucity of recent data on the outcomes of operatively managed lung injuries. The aim of our study is to determine the survival rates of operatively managed traumatic lung injury patients on a nationwide scale. METHODS: We performed a retrospective analysis of the ACS-TQIP 2017-2020. We included all adult trauma patients with lung injuries that underwent operative management. Patients were stratified based on type of surgery into 3 groups (wedge resection, lobectomy, pneumonectomy). The outcome was mortality. Multivariable logistic regression analysis was performed to identify the independent predictors of mortality. RESULTS: We identified a total of 170,377 patients with lung injuries, out of which 2159 (1.3%) patients underwent operative management (Wedge resection [61%], Lobectomy [31%], Pneumonectomy [8%]). Among operatively managed patients, the mean (SD) age was 37 (16) years, and 86% were male. Overall, 65% sustained penetrating injuries, with a median [IQR] ISS of 25 [16 - 33], and median [IQR] lung injury AIS severity of 4 [3 - 4]. About 7% of the patients suffered hilar injuries. The mean (SD) SBP on arrival was 108 (43) and the median [IQR] time to surgery was 177 [52 - 5351] minutes. The median hospital LOS was 10 [1 - 19] days, and overall mortality rate was 30%. On univariate analysis, patients undergoing pneumonectomy had the highest mortality (54%), followed by lobectomy (33%), and wedge resection (25%). On multivariable regression analysis, hilar injuries (aOR 1.9, 95%CI = 1.06 - 2.80, P = 0.029), increasing age (aOR 1.02, 95%CI = 1.01 - 1.03, P = 0.001), concomitant head (aOR 1.34, 95%CI = 1.22 - 1.47, P < 0.001) and abdominal injuries (aOR 1.42, 95%CI = 1.31 - 1.54, P < 0.001) were independent predictors of mortality. CONCLUSIONS: Nearly 1 in 3 patients with lung injuries who were managed operatively did not survive their index admission. These findings highlight that operatively managed lung injuries still carry a high risk of mortality and should be reserved for selected patients. The decision for surgery in patients with concomitant head or abdominal injuries must be taken on a case-to-case basis.

Spleen autotransplantation on liver versus greater omentum for simultaneous injuries of liver and spleen: an experimental study.

Purpose: In a simulated situation of simultaneous spleen and liver trauma, we aimed to compare the outcomes of treating both injuries with spleen autotransplantation on the omentum (SAO) alongside hepatorrhaphy versus spleen autotransplantation as a patch on the liver parenchyma. Methods: A total of 24 rats were separated into two groups: the SAO and the spleen autotransplantation on the liver. They underwent a uniform and simultaneous procedure involving full-thickness injuries to the left lobe of the liver and grade 4 spleen injuries. We measured hemoglobin, white blood cell (WBC), complement (C3 and C4), and immunoglobulin G, M, and A (IgG, IgM, IgA) levels before and 4 weeks after the surgery. We utilized Technetium-99m scintigraphy to evaluate the posttransplant splenic graft functions 4 weeks after the surgery. Results: The two groups had no significant difference in the hematologic and immunologic factors before surgery. However, both procedures significantly reduced hemoglobin, C3, IgG, and IgA levels (all P<0.05). WBC counts significantly increased in the SAO group, whereas the IgM level decreased after the intervention (P<0.05). WBC was increased in the SAO group, while IgM and IgA were decreased in the SAO group. The Technetium uptake was similar between the two groups (P=0.3). Conclusions: In simultaneous spleen and liver injuries, the autotransplantation of splenic into the liver parenchyma appears to be a promising surgical approach for preserving spleen function and hepatorrhaphy at the same time instead of doing them separately.

The implications of poor nutritional status on outcomes of geriatric trauma patients.

BACKGROUND: Malnutrition is shown to be associated with worse outcomes among surgical patients, yet its postdischarge outcomes in trauma patients are not clear. This study aimed to evaluate both index admission and postdischarge outcomes of geriatric trauma patients who are at risk of poor nutritional status. METHODS: This is a secondary analysis of the prospective observational American Association of Surgery for Trauma Frailty Multi-institutional Trial. Geriatric (≥65 years) patients presenting to 1 of the 17 Level I/II/III trauma centers (2019-2021) were included and stratified using the simplified Geriatric Nutritional Risk Index (albumin [g/dL] + body mass index [kg/m2]/10) into severe (simplified Geriatric Nutritional Risk Index <5), moderate (5.5> simplified Geriatric Nutritional Risk Index ≥5), mild level of nutritional risk (6> simplified Geriatric Nutritional Risk Index ≥5.5), and good nutritional status (simplified Geriatric Nutritional Risk Index ≥6) and compared. RESULTS: Of the 1,321 patients enrolled, 22% were at risk of poor nutritional status (mild: 13%, moderate: 7%, severe: 3%). The mean age was 77 ± 8 years, and the median [interquartile range] Injury Severity Score was 9 [5-13]. Patients at risk of poor nutritional status had greater rates of sepsis, pneumonia, discharge to the skilled nursing facility and rehabilitation center, index-admission mortality, and 3-month mortality (P < .05). On multivariable analyses, being at risk of severe level of nutritional risk was independently associated with sepsis (adjusted odds ratio 6.21, 95% confidence interval 1.68-22.90, P = .006), pneumonia (adjusted odds ratio 4.40, 95% confidence interval 1.21-16.1, P = .025), index-admission mortality (adjusted odds ratio 3.16, 95% confidence interval 1.03-9.68, P = .044), and 3-month mortality (adjusted odds ratio 8.89, 95% confidence interval 2.01-39.43, P = .004) compared with good nutrition state. CONCLUSION: Nearly one quarter of geriatric trauma patients were at risk of poor nutritional status, which was identified as an independent predictor of worse index admission and 3-month postdischarge outcomes. These findings underscore the need for nutritional screening at admission.

Early Vasopressor Requirement Among Hypotensive Trauma Patients: Does It Cause More Harm Than Good?

BACKGROUND: Optimal utilization of vasopressors during early post-injury resuscitation remains unclear. Our study aims to describe the relationship between the timing of vasopressor administration and outcomes among hypotensive trauma patients. METHODS: This was a retrospective analysis of the 2017-2018 ACS-TQIP database. We included adult (≥18 years) trauma patients presenting with hypotension (lowest SBP <90 mmHg) who received vasopressors within 6 hours of admission. We excluded patients who had a severe head injury (Head-AIS >3) and those with spinal cord injury (Spine-AIS >3). Patients were stratified based on the time to receive vasopressors. Multivariable regression analyses were performed to identify the independent association between timing of vasopressor initiation and outcomes. RESULTS: 1049 patients were identified. Mean age was 55 ± 20 years, and 70% of patients were male. The median ISS was 16 [9-24], 80% had a blunt injury, and the mean SBP was 61 ± 24 mmHg. The median time to first vasopressor administration was 319 [68-352] minutes. Overall, 24-hour and in-hospital mortality rates were 19% and 33%, respectively. Every one-hour delay in vasopressor administration beyond the first hour was independently associated with decreased odds of 24-hour mortality (aOR: 0.65, P < 0.001), in-hospital mortality (aOR: 0.65, P < 0.001), major complications (aOR: 0.77, P = 0.003), and increased odds of longer ICU LOS (ß + 2.53, P = 0.012). There were no associations between the timing of early vasopressor administration and 24-hour PRBC transfusion requirements (P > 0.05). CONCLUSION: Earlier vasopressor requirement among hypotensive trauma patients was independently associated with increased mortality and major complications. Further research on the utility and optimal timing of vasopressors during the post-injury resuscitative period is warranted. LEVEL OF EVIDENCE: III therapeutic/care management.

Inflammatory biomarkers in cardiac syndrome X: a systematic review and meta-analysis.

INTRODUCTION: In the current systematic review and meta-analysis, we aim to analyze the existing literature to evaluate the role of inflammatory biomarkers, including neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), C-reactive protein (CRP), tumor necrosis factor-a (TNF-a), and interleukin-6 (IL-6) among individuals with cardiac syndrome X (CSX) compared to healthy controls. METHODS: We used PubMed, Web of Science, Scopus, Science Direct, and Embase to systematically search relevant publications published before April 2, 2023. We performed the meta-analysis using Stata 11.2 software (Stata Corp, College Station, TX). So, we used standardized mean difference (SMD) with a 95% confidence interval (CI) to compare the biomarker level between patients and healthy controls. The I2 and Cochran's Q tests were adopted to determine the heterogeneity of the included studies. RESULTS: Overall, 29 articles with 3480 participants (1855 with CSX and 1625 healthy controls) were included in the analysis. There was a significantly higher level of NLR (SMD = 0.85, 95%CI = 0.55-1.15, I2 = 89.0 %), CRP (SMD = 0.69, 95%CI = 0.38 to 1.02, p < 0.0001), IL-6 (SMD = 5.70, 95%CI = 1.91 to 9.50, p = 0.003), TNF-a (SMD = 3.78, 95%CI = 0.63 to 6.92, p = 0.019), and PLR (SMD = 1.38, 95%CI = 0.50 to 2.28, p = 0.02) in the CSX group in comparison with healthy controls. CONCLUSION: The results of this study showed that CSX leads to a significant increase in inflammatory biomarkers, including NLR, CRP, IL-6, TNF-a, and PLR.

Predicting the time of mortality among older adult trauma patients: Is frailty the answer?

INTRODUCTION: This study aims to evaluate the temporal trends of mortality among frail versus non-frail older adult trauma patients during index hospitalization. METHODS: We performed a 3-year (2017-2019) analysis of ACS-TQIP. We included all older adult (age ≥65 years) trauma patients. Patients were stratified into two groups (Frail vs. Non-Frail). Outcomes were acute (<24 â€‹h), early (24-72 â€‹h), intermediate (72 hours-1 week), and late (>1 week) mortality. RESULTS: A total of 1,022,925 older adult trauma patients were identified, of which 19.7 â€‹% were frail. The mean(SD) age was 77(8) years and 57.4 â€‹% were female. Median[IQR] ISS was 9[4-10] and both groups had comparable injury severity (p â€‹= â€‹0.362). On multivariable analysis, frailty was not associated with acute (aOR 1.034; p â€‹= â€‹0.518) and early (aOR 1.190; p â€‹= â€‹0.392) mortality, while frail patients had independently higher odds of intermediate (aOR 1.269; p â€‹= â€‹0.042) and late (aOR 1.835; p â€‹< â€‹0.001) mortality. On sub-analysis, our results remained consistent in mild, moderate, and severely injured patients. CONCLUSION: Frailty is an independent predictor of mortality in older adult trauma patients who survive the initial 3 days of admission, regardless of injury severity.

Association of inflammatory biomarkers with overall survival in burn patients: a systematic review and meta-analysis.

INTRODUCTION: The inflammatory response to burn injuries can lead to organ dysfunction that ultimately results in increased mortality and morbidity. This meta-analysis was conducted to determine the efficacy of inflammatory biomarkers, including the neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), procalcitonin (PCT), and C-reactive protein (CRP) as predictive tools of mortality among burn patients. MATERIAL AND METHODS: The biomarker levels of survivors and non-survivors were consolidated according to guidelines for Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Three main databases were searched electronically: PubMed, Web of Science, and Scopus, on December 8, 2022. The Newcastle-Ottawa Quality Assessment Scale (NOS) was used to evaluate and score the methodological quality of the included studies. The standard mean difference (SMD) with a 95% confidence interval (CI) was utilized. RESULTS: Twenty-four studies were included in our systematic review and meta-analysis, (3636 total burn patients), of whom 2878 survived. We found that deceased burn patients had elevated levels of NLR (SMD = 0.60, 95% CI; 0.19-1.00, P < 0.001), CRP (SMD = 0.80, 95% CI; 0.02-1.58, P = 0.04), and PCT (SMD = 0.85, 95% CI; 0.45-1.24, P < 0.001), compared to survivors. However, we found no association between PLR and mortality among burn patients (SMD = 0.00, 95% CI; -0.14-0.15, P < 0.001). In addition, CRP was significantly higher in non-survivors (SMD = 0.80, 95% CI; 0.02-1.58, P =0.04). Similar results were also found about PCT (SMD = 0.85, 95% CI; 0.45-1.24, P < 0.001). When we analyzed the PCT data, collected in the first 24-48 hours, we found similar results; the PCT level was significantly higher in non-survivors in the immediate postinjury-period (SMD = 0.67, 95% CI; 0.31-1.02, P < 0.001). There was no publication bias among studies on the role of NLR in burn (Egger's test P = 0.91). The based cut-off values for NLR (13), CRP (71), and PCT (1.77) yielded sensitivities of 69.2%, 100%, and 93.33%, and specificities of 76%, 72.22%, and 72.22% respectively. DISCUSSION/CONCLUSIONS: PCT is a marker of sepsis, therefore its elevated level is presumably associated with a higher incidence and severity of sepsis among non-survivors. In addition, NLR and CRP are promising biomarkers for predicting and guiding prevention against burn deaths in clinical settings.

Meta-analysis of the Relationship Between Neutrophil to Lymphocyte Ratio and Nasal Polyps.

Our study aimed to enhance understanding of nasal polyp pathophysiology by reviewing the data for variations of NLR values between patients with nasal polyp and healthy controls. We searched Web of Science, PubMed, ProQuest, and Scopus up to 2 April 2023. The search strategy was not limited to any specific language. Twelve studies were included in our study. Of them, ten studies, involving 898 nasal polyp patients and 590 control patients, were included in the meta-analysis. The NLR levels in nasal polyp patients were statistically greater than in the control group (SMD = 0.56; 95%CI 0.04-1.08, P = 0.036). Subgroup analysis based on study design yielded that patients with nasal polyp exhibited significantly higher NLR levels than healthy controls in retrospective studies (SMD = 0.83; 95%CI 0.30-1.35, P = 0.002) but not in prospective studies (SMD = 0.10; 95%CI = -1.03 to 1.23, P = 0.85). Also, we found that the NLR levels in nasal polyp patients were significantly higher than healthy controls in high-quality studies (SMD = 1.00; 95%CI 0.38-1.62, P = 0.002) but not in low-quality studies (SMD = 0.11; 95%CI = -0.69 to 0.91, P = 0.79). A total of 312 patients with recurrence and 550 patients without recurrence were included in the study. The combined results revealed that NLR levels in nasal polyp recurrence patients were significantly higher than those of the nasal polyp without recurrence group (SMD = 0.06, 95% CI 0.39-0.81, P = 0.000). These results showed the relationship between the NLR in nasal polyps and can help medical doctors to predict the recurrence of the disease in such patients.

Prognostic Role of Neutrophil to Lymphocyte Ratio in Contrast-Induced Nephropathy: A Systematic Review and Meta-analysis.

This meta-analysis assessed the use of the neutrophil-to-lymphocyte ratio (NLR) as a means of early detection of contrast-induced nephropathy (CIN) following diagnostic or therapeutic procedures. We used Web of Science, PubMed, and Scopus to conduct a systematic search. There was no limitation regarding language or date of publication. We reported standardized mean difference (SMD) with a 95% confidence interval (CI). Due to high heterogeneity, a random-effects model was used, and the Newcastle-Ottawa scale was used for quality assessment. Thirty-one articles were included in the analysis. Patients in the CIN group had elevated levels of NLR compared with those in the non-CIN group (SMD = 0.78, 95% CI = 0.52-1.04, P < .001). Similar results were observed in either prospective (SMD = 1.03, 95% CI = 0.13-1.93, P = .02) or retrospective studies (SMD = 0.70, 95% CI = 0.45-0.96, P < .001). The pooled sensitivity of NLR was 74.02% (95% CI = 66.54%-81.02%), and the pooled specificity was 60.58% (95% CI = 53.94%-66.84%). NLR shows potential as a cost-effective biomarker for predicting CIN associated with contrast-involved treatments. This could help implement timely interventions to mitigate CIN and improve outcomes.

Neutrophil to lymphocyte ratio in odontogenic infection: a systematic review.

BACKGROUND: We conducted this systematic review to compile the evidence for the role of neutrophil to lymphocyte ratio (NLR) in odontogenic infection (OI) and to determine whether NLR is elevated in patients with OI. This was done to aid physicians in better understanding this condition for clinical management. METHODS: The search was conducted on PubMed, Scopus, and Web of Science libraries on March 30, 2023. Two reviewers independently screened the studies using Endnote software. The Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of the studies. RESULTS: A total of nine studies were included in the review. Among patients with OI, positive and statistically significant correlations of NLR were seen with more severe disease, a prolonged hospital stay, postoperative requirement of antibiotics, and total antibiotic dose needed. In the receiver operating characteristics (ROC) analysis, the optimum cut-off level of NLR was 5.19 (specificity: 81, sensitivity: 51). In addition, NLR was correlated with preoperative fever (p = 0.001). Among patients with Ludwig's Angina, NLR could predict disease severity and length of stay in the hospital (p = 0.032 and p = 0.033, respectively). In addition, the relationship between the NLR and mortality was statistically significant (p = 0.026, specificity of 55.5%, and sensitivity of 70.8%). Among patients with severe oral and maxillofacial space infection, a positive correlation was found between IL-6 and CRP with NLR (rs = 0.773, P = 0.005 and rs = 0.556, P = 0.020, respectively). Also, a higher NLR was considered an essential predictor of organ involvement (P = 0.027) and the number of complications (P = 0.001). However, among diabetes mellitus (DM) patients afflicted with submandibular abscesses, NLR had no association with therapeutic response. CONCLUSIONS: Many people around the world suffer from OI, and a cheap and fast biomarker is needed for it. Interestingly, inflammation plays a role in this infection, and elevated NLR levels can be a good biomarker of inflammation and, as a result, for OI progression.

Association of neutrophil to lymphocyte ratio with bone mineral density in post-menopausal women: a systematic review and meta-analysis.

BACKGROUND: We conducted a systematic review and meta-analysis to compare the neutrophil lymphocyte ratio (NLR) levels between women with post-menopausal osteopenia or osteoporosis to those with normal bone mineral density (BMD). METHODS: We used Web of Science, PubMed, and Scopus to conduct a systematic search for relevant publications published before June 19, 2022, only in English language. We reported standardized mean difference (SMD) with a 95% confidence interval (CI). Because a significant level of heterogeneity was found, we used the random-effects model to calculate pooled effects. We used the Newcastle-Ottawa scale for quality assessment. RESULTS: Overall, eight articles were included in the analysis. Post-menopausal women with osteoporosis had elevated levels of NLR compared to those without osteoporosis (SMD = 1.03, 95% CI = 0.18 to 1.88, p = 0.017, I2 = 98%). In addition, there was no difference between post-menopausal women with osteopenia and those without osteopenia in neutrophil lymphocyte ratio (NLR) levels (SMD = 0.58, 95% CI=-0.08 to 1.25, p = 0.085, I2 = 96.8%). However, there was no difference between post-menopausal women with osteoporosis and those with osteopenia in NLR levels (SMD = 0.75, 95% CI=-0.01 to 1.51, p = 0.05, I2 = 97.5%, random-effect model). CONCLUSION: The results of this study point to NLR as a potential biomarker that may be easily introduced into clinical settings to help predict and prevent post-menopausal osteoporosis.

Prognostic Role of Neutrophil to Lymphocyte Ratio in Allergic Rhinitis: A Systematic Review and Meta-analysis.

One of the crucial triggers of allergic diseases is an inflammatory reaction and neutrophil to lymphocyte ratio (NLR) is one of the systemic inflammation biomarkers. Our review aimed to evaluate role of NLR in predicting severity and comorbidities of allergic rhinitis (AR). We systematically searched Scopus, Web of Science, and PubMed to find relevant studies. Standardized mean difference (SMD) with a 95% confidence interval (CI) was reported. Due to the high levels of heterogeneity, the random-effects model was used to generate pooled effects. Eleven articles were included in the systematic review, among which ten were included in meta-analysis including 1122 healthy controls and 1423 patients with AR. We found that patients with AR had a significantly higher level of NLR than healthy controls (SMD = 0.19, 95%CI = 0.03-0.36, P = 0.03). In addition, patients with moderate to severe AR had significantly higher levels of NLR compared to those with mild AR (SMD = 0.41, 95%CI = 0.20-0.63, P < 0.001). Interestingly, it was found that NLR could associate with some comorbidities of AR, like asthma. Our results confirmed that NLR could assist clinicians in predicting the severity and comorbidities of AR. Supplementary Information: The online version contains supplementary material available at 10.1007/s12070-023-04148-8.

Diagnostic Significance of Neutrophil to Lymphocyte Ratio in Recurrent Aphthous Stomatitis: A Systematic Review and Meta-Analysis.

INTRODUCTION: Recurrent aphthous stomatitis (RAS) is a prevalent ulcerative condition affecting oral mucosa. OBJECTIVES: A systematic review and meta-analysis was performed to compare the level of neutrophil to lymphocyte ratio (NLR) between individuals with RAS and those who are healthy. METHODS: A systematic search for relevant publications before June 21, 2022, was conducted using Web of Science, PubMed, and Scopus. The results were presented as the standardized mean difference (SMD) with a 95% confidence interval (CI), and a random-effects model was used to calculate pooled effects due to the presence of significant heterogeneity. Quality assessment was performed using the Newcastle-Ottawa scale. RESULTS: Overall, 13 article with were included in the analysis. NLR was higher among patients with RAS compared to healthy controls (SMD = 0.50, 95% CI = -0.20 to 0.79, P = 0.001, I2 = 91.5%). In the subgroup analysis based on the study design, it was found that retrospective studies showed higher levels of NLR in patients with RAS compared to healthy controls (SMD = 0.62, 95% CI= 0.16 to 1.08, P < 0.01), but these results were not applied to prospective studies (SMD = 0.35, 95% CI = -0.03 to 0.74, P < 0.07). CONCLUSION: Elevated neutrophil to lymphocyte ratio revealed crosstalk between systematic inflammation and RAS.

Systematic review of the significance of neutrophil to lymphocyte ratio in anastomotic leak after gastrointestinal surgeries.

INTRODUCTION: The inflammatory response is thought to be a critical initiator of epigenetic alterations. The neutrophil to lymphocyte ratio (NLR), a biomarker of inflammation, is computed by dividing the number of neutrophils by the number of lymphocytes. The primary goal of this systematic review and meta-analysis was to evaluate the pre-operative NLR of gastrointestinal surgery patients who had an anastomotic leak (AL) in comparison to those who did not AL. METHODS: We performed a comprehensive search for relevant papers published before May 4, 2022, using PubMed, Scopus, and Web of Science. Standardized mean difference (SMD) with a 95% confidence interval (CI) was pooled in meta-analysis to yield a summary estimate. We utilized the random-effects model to create pooled effects since we discovered a substantial heterogeneity level. For evaluating quality, the Newcastle-Ottawa scale (NOS) was implemented. RESULTS: The research comprised 12 studies with a total of 2940 individuals who had GI operations, 353 of whom went on to develop AL. We discovered that patients who had GI surgeries and acquired AL had significantly higher NLR levels than those who did not (random-effects model: SMD = 0.75, 95% CI = 0.11-1.38, p = 0.02). Patients with AL showed significantly higher NLR levels than control group in retrospective studies (SMD = 0.93, 95% CI = 0.20-1.66, p=0.01) but not in prospective studies (SMD = - 0.11, 95% CI = - 0.65-0.43, p = 0.69), according to the subgroup analysis based on research design. Subgroup analysis based on ethnicity yielded that white patients with AL exhibited significantly higher NLR values than the control group (SMD = 1.35, 95% CI = 0.01-2.68, p = 0.04) but this result was not applied to East Asian patients (SMD = 0.14, 95% CI = -0.13-0.41, p = 0.29). CONCLUSION: Our research suggests a potential association between preoperative NLR and postoperative AL. However, it is essential to acknowledge the variability in the findings, with significantly higher NLR levels observed in retrospective studies and among white patients, but not consistently replicated in prospective studies and among East Asian patients. Further investigations with larger and more diverse cohorts are warranted to validate these findings and explore potential factors contributing to the observed discrepancies.