Admission White Blood Cell Count Research Articles

Correlation between white blood cell count and intestinal resection in patients with acute mesenteric vein thrombosis

ObjectiveAcute mesenteric vein thrombosis (AMVT) is an acute abdominal disease with onset, rapid progression, and extensive intestinal necrosis that requires immediate surgical resection. The purpose of this study was to determine the risk factors for nosocomial intestinal resection in patients with AMVT.MethodsWe retrospectively analysed 64 patients with AMVT diagnosed by CTA at the Affiliated Hospital of Kunming University of Science and Technology from January 2013 to December 2021. We compared patients who underwent intestinal resection (42 patients) with those who did not undergo intestinal resection (22 patients). The area under the ROC curve was evaluated, and a forest map was drawn.ResultsAmong the 64 patients, 6 (9.38%) had a fever, 60 (93.75%) had abdominal pain, 9 (14.06%) had a history of diabetes, 8 (12.5%) had a history of deep vein thrombosis (DVT), and 25 (39.06%) had ascites suggested by B ultrasound or CT after admission. The mean age of all patients was 49.86 ± 16.25 years. The mean age of the patients in the enterectomy group was 47.71 ± 16.20 years. The mean age of the patients in the conservative treatment group (without enterectomy) was 53.95 ± 15.90 years. In the univariate analysis, there were statistically significant differences in leukocyte count (P = 0.003), neutrophil count (P = 0.001), AST (P = 0.048), total bilirubin (P = 0.047), fibrinogen (P = 0.022) and DD2 (P = 0.024) between the two groups. The multivariate logistic regression analysis showed that admission white blood cell count (OR = 1.153, 95% CI: 1.039–1.280, P = 0.007) was an independent risk factor for intestinal resection in patients with AMVT. The ROC curve showed that the white blood cell count (AUC = 0.759 95% CI: 0.620–0.897; P = 0.001; optimal threshold: 7.815; sensitivity: 0.881; specificity: 0.636) had good predictive value for emergency enterectomy for AMVT.ConclusionsAmong patients with AMVT, patients with a higher white blood cell count at admission were more likely to have intestinal necrosis and require emergency enterectomy. This study is helpful for clinicians to accurately determine whether emergency intestinal resection is needed in patients with AMVT after admission, prevent further intestinal necrosis, and improve the prognosis of patients.

Association of Demographic Characteristics and Laboratory Values in Diabetic Foot Infections Leading to Lower-Extremity Amputation.

Lower-extremity amputations are a common complication of poorly controlled diabetes and contribute to significant morbidity and mortality in diabetic patients. We sought to determine whether objective data points obtained on presentation or hospital admission, including white blood cell (WBC) count, hemoglobin A1c (HbA1c), C-reactive protein (CRP), and descriptive patient demographics allow for the ability to predict optimal amputation levels and outcomes of lower-extremity amputation in the diabetic population. A retrospective analysis of 162 patients was performed evaluating laboratory and descriptive values on hospital presentation for lower-extremity infection during a 16-year period. Occurrence of multiple amputations and level of amputation were assessed against laboratory values to determine whether these objective values would provide clinicians with a better understanding of amputations in the diabetic patient. The mean patient age was 60.6 years. A significantly higher percentage of patients who underwent amputations through the tibia and fibula or of the foot midtarsal were male compared with patients who underwent amputations of the thigh through femur. Patients who had amputations through the tibia and fibula had a significantly higher WBC count compared with patients who had a transmetatarsal amputation (P = .03). There was no significant difference in type or quantity of amputations when analyzing HbA1c and CRP levels. An admission WBC count may be used as a predictor of lower-extremity amputation level and outcomes in diabetic infections. Although a statistically significant difference was not found for CRP or HbA1c levels between amputation procedures and number of procedures performed, these values remain useful in managing lower-extremity infections in diabetic patients.

Development of a Predictive Nomogram for Intra-Hospital Mortality in Acute Ischemic Stroke Patients Using LASSO Regression.

Ischemic stroke is a leading cause of mortality and disability globally, necessitating accurate prediction of intra-hospital mortality (IHM) for improved patient care. This study aimed to develop a practical nomogram for personalized IHM risk prediction in ischemic stroke patients. A retrospective study of 422 ischemic stroke patients (April 2020 - December 2021) from Chongqing Medical University's First Affiliated Hospital was conducted, with patients divided into training (n=295) and validation (n=127) groups. Data on demographics, comorbidities, stroke risk factors, and lab results were collected. Stroke severity was assessed using NIHSS, and stroke types were classified by TOAST criteria. Least absolute shrinkage and selection operator (LASSO) regression was employed for predictor selection and nomogram construction, with evaluation through ROC curves, calibration curves, and decision curve analysis. LASSO regression and multivariate logistic regression identified four independent IHM predictors: age, admission NIHSS score, chronic obstructive pulmonary disease (COPD) diagnosis, and white blood cell count (WBC). A highly accurate nomogram based on these variables exhibited excellent predictive performance, with AUCs of 0.958 (training) and 0.962 (validation), sensitivities of 93.2% and 95.7%, and specificities of 93.1% and 90.9%, respectively. Calibration curves and decision curve analysis validated its clinical applicability. Age, admission NIHSS score, COPD history, and WBC were identified as independent IHM predictors in ischemic stroke patients. The developed nomogram demonstrated high predictive accuracy and practical utility for mortality risk estimation. External validation and prospective studies are warranted for further confirmation of its clinical efficacy.

White Blood Cell Count Predicts Mortality in Patients with Spontaneous Intracerebral Hemorrhage.

The association between white blood cell (WBC) counts and mortality in patients with intracerebral hemorrhage (ICH) has not been established. The aim of this study is to determine whether higher WBC is associated with mortality at 90days. A retrospective observational study was conducted at two medical hospitals in China. Baseline WBC count on admission served as the primary predictor variable. Longitudinal WBC counts within the first week after admission were collected to assess the effects of WBC trajectory and the median and maximum WBC counts on outcomes following ICH. Associations of WBC count with outcomes were evaluated in multivariable regression analyses. We identified 3613 patients with ICH who met the inclusion criteria. After adjusting primary confounding variables, patients with increased WBC count had a significantly higher risk of 90-day mortality (p < 0.001 for trend). In the receiver operating characteristic analyses, the capacity for all-cause mortality prediction by WBC count on admission (area under the ROC curve (AUC) = 0.65) was superior to other important inflammatory markers, includingneutrophil(AUC = 0.64) , lymphocyte(AUC = 0.57), albumin(AUC = 0.57), and platelet count(AUC = 0.53), p < 0.001for WBC vs.neutrophil, and the median WBC count (AUC = 0.66) within the first week after admission was a better marker than admission WBC count (p = 0.02). In patients with ICH, WBC count on admission was associated with all-cause mortality at 90days. Additionally, the median and maximum WBC counts within the first week after admission showed better predictive ability for the 90-day mortality compared with the WBC count on admission.

Admission eGFR predicts in-hospital mortality independently of admission glycemia and C-peptide in patients with type 2 diabetes mellitus and COVID-19

Objective Type 2 diabetes mellitus (T2DM) and impaired kidney function are associated with a higher risk of poor outcomes of coronavirus disease 2019 (COVID-19). We conducted a retrospective study in hospitalized T2DM patients with COVID-19 to assess the association between in-hospital mortality and admission values of different hematological/biochemical parameters, including estimated glomerular filtration rate (eGFR), plasma glucose and C-peptide (the latter serving as a marker of beta-cell function). Methods The study included T2DM patients with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection who were consecutively admitted to our Institution between 1 October 2020 and 1 April 2021. Results Patients (n = 74) were categorized into survivors (n = 55) and non-survivors (n = 19). Non-survivors exhibited significantly higher median white blood cell (WBC) count, D-dimer, neutrophil-to-lymphocyte ratio, high-sensitivity C-reactive protein (hsCRP), and procalcitonin levels, as well as significantly lower median serum 25-hydroxyvitamin D [25(OH)D] levels compared to survivors. Non-survivors exhibited significantly higher median admission plasma glucose (APG) values compared to survivors (210 vs. 166 mg/dL; p = .026). There was no statistically significant difference in median values of (random) plasma C-peptide between non-survivors and survivors (3.55 vs. 3.24 ng/mL; p = .906). A significantly higher percentage of patients with an eGFR < 60 mL/min/1.73 m2 was observed in the non-survivor group as compared to the survivor group (57.9% vs. 23.6%; p = .006). A multivariate analysis performed by a logistic regression model after adjusting for major confounders (age, sex, body mass index, major comorbidities) showed a significant inverse association between admission eGFR values and risk of in-hospital mortality (OR, 0.956; 95% CI, 0.931-0.983; p = .001). We also found a significant positive association between admission WBC count and risk of in-hospital mortality (OR, 1.210; 95% CI, 1.043–1.404; p = .011). Conclusions Admission eGFR and WBC count predict in-hospital COVID-19 mortality among T2DM patients, independently of traditional risk factors, APG and random plasma C-peptide. Hospitalized patients with COVID-19 and comorbid T2DM associated with impaired kidney function at admission should be considered at high risk for adverse outcomes and death.

Predicting the likelihood of lower respiratory tract Ureaplasma infection in preterms

ObjectiveTo develop predictive models of Ureaplasma spp lower airway tract infection in preterm infants.MethodsA dataset was assembled from five cohorts of infants born <33 weeks gestational age (GA) enrolled over...

Features on Computed Tomography That Correlate With Acute Appendicitis.

Background: The purpose of this study is to investigate the relevant findings in adult patients admitted to Cabell Huntington Hospital who were diagnosed with acute appendicitis. Methods: Patients who had the postoperative diagnosis of acute appendicitis and a preoperative computed tomography (CT) scan from January 2011 through December 2016 were included in this retrospective chart review. Results: There were 592 patients. A thick, edematous appendix was the most common CT finding in acute appendicitis. The average diameter was 12.6mm. The wall thickness correlated to the diameter of the appendix (P < 0.001). For comparison, we reviewed the CT scans of 50 trauma patients who had normal abdominal CT scans. The average diameter of a normal appendix was 4.9mm (SD 1.139) with a range of 4-7mm. Interestingly, the admission white blood cell count (P = 0.0372) as well as the thickness of the appendix (P < 0.0001) were strongly associated with increased length of stay. Conclusions: An appendiceal diameter greater than 9mm should be considered abnormal and associated with acute appendicitis. Appendiceal size, white blood cell count, and age correlate with length of stay. Early antibiotics and early surgical intervention may decrease length of stay.

Predictive effects of admission white blood cell counts and hounsfield unit values on delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage

ObjectiveNeuroinflammatory response is deemed the primary pathogenesis of delayed cerebral ischemia (DCI) caused by aneurysmal subarachnoid hemorrhage (aSAH). Both white blood cell (WBC) count and Hounsfield Unit (HU) are gradually considered can reflect inflammation in DCI. This study aims to identify the relationship between WBC count and HU value and investigate the effects of both indicators in predicting DCI after aSAH. MethodsWe enrolled 109 patients with aSAH admitted within 24 h of onset in our study. A multivariate logistic regression analysis was used to evaluate the admission WBC count, HU value, and combined WBC-HU associated with DCI. The receiver operating characteristic curve and area under the curve (AUC) were used to determine thresholds and detect the predictive ability of these predictors. These indicators were also compared with the established inflammation markers. ResultsThirty-six (33%) patients developed DCI. Both WBC count and HU value were strongly associated with the admission glucose level (ρ = .303, p = .001; ρ = .273, p = .004), World Federation of Neurosurgical Societies grade (ρ = .452, p < .001; ρ = .578; p < .001), Hunt-Hess grade (ρ = .450, p < .001; ρ = .510, p < .001), and modified Fisher scale score (ρ = .357, p < .001; ρ = .330, p < .001). After controlling these public variables, WBC count (ρ = .300, p = .002) positively correlated with HU value. An early elevated WBC (odds ratio [OR] 1.449, 95% confidence interval [CI]: 1.183–1.774, p < .001) count and HU value (OR 1.304, 95%CI: 1.149–1.479, p < .001) could independently predict the occurrence of DCI. However, only these patients with both WBC count and HU value exceeding the cut-off points (OR 36.89, 95%CI: 5.606–242.78, p < .001) were strongly correlated with DCI. Compared with a single WBC count (AUC 0.811, 95%CI: 0.729–0.892, p < .001) or HU value (AUC 0.869, 95%CI: 0.803–0.936, p < .001), the combined WBC-HU (AUC 0.898, 95%CI: 0.839–0.957, p < .001) demonstrated a better ability to predict the occurrence of DCI. Inspiringly, the prediction performance of these indicators outperformed the established inflammatory markers. ConclusionAn early elevated WBC count and HU value could independently predict DCI occurrence between 4 and 30 days after aSAH. Furthermore, WBC count was positively correlated with HU value, and the combined WBC-HU demonstrated a superior prediction ability for DCI development compared with the individual indicator.

Admission white blood cell count predicts post-discharge mortality in patients with acute aortic dissection: data from the MIMIC-III database

BackgroundInflammation underlies both the pathogenesis and prognosis in patients with acute aortic dissection (AAD). This study aimed to assess the association of ICU admission of white blood cell count (WBCc) with post-discharge mortality in these patients.MethodsClinical data were extracted from the MIMIC-III V1.4 database. After adjusted to covariables, Cox regression analysis and Kaplan–Meier survival curve were performed to determine the relationship between WBCc on admission and post-discharge mortality (30-day, 90-day, 1-year and 5-year) in AAD patients. Subgroup analysis and receiver operating characteristic (ROC) curve analysis were used to test the performance of WBCc in predicting mortality in AAD patients.ResultsA total of 325 eligible patients were divided into 2 groups: normal-WBCc group (≤ 11 k/uL) and high-WBCc group (> 11 K/uL). In univariate Cox regression analysis, high WBCc was significant risk predictor of 30-day, 90-day, 1-year and 5-year mortality [hazard ratio (HR), 95% CI, P 2.58 1.36–4.91 0.004; 3.16 1.76–5.70 0.000; 2.74 1.57–4.79 0.000; 2.10 1.23–3.54 0.006]. After adjusting for age and other risks, high WBCc remained a significant predictor of 30-day, 90-day and 1-year mortality in AAD patients (HR, 95% CI, P 1.994 1.058–3.76 0.033; 2.118 1.175–3.819 0.013; 2.37 1.343–4.181 0.003). The area under ROC curve of WBCc for predicting 30-day, 90-day, 1-year and 5-year mortality were 0.69, 0.70, 0.66 and 0.61, respectively. The results from subgroups analysis showed that there was no interaction in most strata and patients who were younger than 69 years of age or had history of respiratory disease with an elevated WBCc had an excess risk of 30-day mortality (HR, 95% CI, P 3.18 1.41–7.14 0.005; 3.84 1.05–14.13 0.043).ConclusionsHigher than normal WBCc on admission may predict post-discharge mortality in patients with AAD.

Evaluation of the relationship between intravascular hemolysis and clinical manifestations in sickle cell disease: decreased hemopexin during vaso-occlusive crises and increased inflammation in acute chest syndrome.

The aims of this study were to determine the possible relationships between the levels of hemin, hemopexin, acid sphingomyelinase, nitrite/nitrate (NOx), and other parameters in patients with SCD and to assess whether they were associated with vaso-occlusive crises (VOCs) or acute chest syndrome (ACS). Patients with SCD (homozygous or sickle beta-thalassemia) who were confirmed to have VOC or ACS were included. Blood samples were obtained at admission, on the third day of hospitalization, and at steady state. Demographic characteristics, pain (visual analog scale), complication history, complete blood count, lactate dehydrogenase, and C-reactive protein levels were recorded. Hemin, hemopexin, acid sphingomyelinase, and NOx were measured via ELISA. A total of 31 patients (22 VOC, 9 ACS) were included. Mean age was 16.4 ± 4.7years. Admission white blood cell count and C-reactive protein levels were significantly higher in the ACS group. Patients with ACS also demonstrated a significant decreasing trend of LDH and an increasing trend of NOx values from admission to steady state. Notably, hemopexin levels were significantly lower on the third day of hospitalization compared to steady-state levels. Despite limited patient count in the ACS group, these patients appear to have strikingly greater inflammatory activation at admission, and the progression of ACS may be associated with LDH and NOx levels. Lower hemopexin levels during hospitalization versus steady state appear to support a role for the administration of hemopexin therapy during crises.

Association Between COVID-19 Outcomes and Patient Characteristics: A Study in an Inner-City Community Hospital.

BackgroundIt has been shown that certain hematological conditions, such as lymphopenia and thrombocytopenia, are associated with increased severity and mortality from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, a majority of the previous data came from large institutional centers with high academic output. We aimed to explore the association between patient’s characteristics, hematological parameters, and outcomes in admitted persons with coronavirus disease 2019 (COVID-19) at our community hospital in an inner city.MethodsThis study is a retrospective chart review designed to evaluate the potential associations between demographic and clinical characteristics of our patient population and their outcomes when testing positive for SARS-CoV-2. The study population included patients hospitalized in the Saint Francis Medical Center from January 2020 to September 2020. This pilot study included 50 out of the 275 hospitalized patients with a confirmed SARS-CoV-2 infection during this timeframe. Data collection from the patient’s chart included age, sex, comorbidities, admission complete blood cell count, and use of Remdesivir, steroids, and plasma. The primary outcome was all-cause in-hospital mortality. Secondary outcomes included the need for mechanical ventilation and ICU admission.ResultsIn this pilot study, there was an overall mortality rate of 32% (16 out of 50 patients). Charlson Comorbidity Index (CCI) of 3 points or above was present in 87.5% of the patients in the mortality group versus 41.1% in patients who survived (p = 0.0021). There was no statistically significant difference in mortality between males and females after adjusting for other variables with an odds ratio (OR) of 0.19 (95% CI 0.02-1.80, p = 0.09). There were no statically significant differences in mortality between Caucasians, non-Hispanic, Black, and Latinx patients (p = 0.466). Admission platelets were lower in the mortality group with a mean of 157.7 ± 43.23 (Thou/ul) versus 250.06 ± 93.95 (Thou/ul) in the survivors (p = 0.0005). Admission white blood cell count in the mortality group was lower than the survivor group with an average of 5.93 ± 2.58 (Thou/ul) versus 9.3 ± 4.14 (Thou/ul) (p = 0.0039), respectively. The plasma D-dimer level of 3 mg/L fibrinogen equivalent unit (FEU) or higher was associated with increased mortality. There was no association of C-reactive protein (CRP) with mortality (p = 0.93 and p = 0.54, respectively); however, the CRP level revealed an association with ICU admission (p = 0.03). The use of steroids, Remdesivir, and plasma did not have a statistically significant effect on mortality, ICU admission, or sepsis in our study.ConclusionIn this study, older age, higher CCI, and plasma D-dimer level of 3 mg/L FEU or higher were associated with higher mortality among COVID-19 patients. White blood cell count and platelet count were significantly lower in the mortality group in comparison to the survivor group. However, there was no statistical difference in lymphocyte count between the mortality group and the survivor group. COVID-19 patients with thrombocytopenia or serum CRP level of 15 mg/dL or higher were more likely to be admitted to ICU.

Culture-negative versus culture-positive in pyogenic spondylitis and analysis of risk factors for relapse

Objectives This study aims to compare and analyze the clinical features, diagnosis, treatment and prognosis of culture-negative and culture-positive primary pyogenic spondylitis. Methods In a retrospective analysis, 202 cases of adult primary pyogenic spondylitis with complete clinical data in our hospital from January 2013 to January 2020 were divided into two groups according to bacterial culture results: culture negative (n = 126) and culture positive (n = 76). We compare the clinical characteristics, diagnosis, treatment and prognosis of patients with different culture results. Results The culture positive rate was 37.62% (76/202). There were no significant differences in age, gender, affected segment, spinal abscess, diabetes mellitus, course of disease, surgery, recurrence, and follow-up time between the two groups (p>.05). There were statistically significant differences in hospital admission erythrocyte sedimentation rate (ESR), admission C-reactive protein (CRP), admission white blood cell (WBC) count, discharge ESR, discharge CRP, ESR decline rate, CRP (p<.05). There were statistically significant differences in the rate of decline, hospitalization days, and body temperature ≥38 °C (p<.05). Higher CRP levels on admission, antibiotic treatment time <6 weeks, and body temperature ≥ 38 °C are independent risk factors for infection recurrence. Conclusions The culture-negative group's admission WBC, admission ESR, admission CRP, discharge ESR, discharge CRP, ESR decline rate, CRP decline rate, and hospital stay were lower than the culture positive group, the difference was statistically significant (p<.05). The independent risk factors for infection recurrence are higher CRP levels in hospital admission, antibiotic treatment time <6 weeks, and body temperature ≥ 38 °C.

Early changes in laboratory parameters are predictors of mortality and ICU admission in patients with COVID-19: a systematic review and meta-analysis

Despite the growing knowledge of the clinicopathological features of COVID-19, the correlation between early changes in the laboratory parameters and the clinical outcomes of patients is not entirely understood. In this study, we aimed to assess the prognostic value of early laboratory parameters in COVID-19. We conducted a systematic review and meta-analysis based on the available literature in five databases. The last search was on July 26, 2020, with key terms related to COVID-19. Eligible studies contained original data of at least ten infected patients and reported on baseline laboratory parameters of patients. We calculated weighted mean differences (WMDs) for continuous outcomes and odds ratios (ORs) with 95% confidence intervals. 93 and 78 studies were included in quantitative and qualitative syntheses, respectively. Higher baseline total white blood cell count (WBC), C-reactive protein (CRP), lactate-dehydrogenase (LDH), creatine kinase (CK), D-dimer and lower absolute lymphocyte count (ALC) (WMDALC = − 0.35 × 109/L [CI − 0.43, − 0.27], p < 0.001, I2 = 94.2%; < 0.8 × 109/L, ORALC = 3.74 [CI 1.77, 7.92], p = 0.001, I2 = 65.5%) were all associated with higher mortality rate. On admission WBC, ALC, D-dimer, CRP, LDH, and CK changes could serve as alarming prognostic factors. The correct interpretation of laboratory abnormalities can guide therapeutic decisions, especially in early identification of potentially critical cases. This meta-analysis should help to allocate resources and save lives by enabling timely intervention.

ABO/Rh Blood Group and COVID-19 Infection Severity

Introduction:Early epidemiological studies of U.S. patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have suggested a possible association between ABO/Rh blood group phenotype and both susceptibility and severity of COVID-19 infection. Given the remarkable heterogeneity of the host inflammatory response in this viral syndrome and the widespread expression of ABO/Rh antigens on vascular and alveolar endothelial cells, it is biologically plausible that certain blood group phenotypes, with their unique repertoire of anti-A and/or anti-B antibodies, may differentially augment the host-pathogen response. We conducted a retrospective review of patients hospitalized for COVID-19 within our regional healthcare network in San Diego County to identify an association between ABO/Rh blood group type and the severity of infection.Methods:All patients hospitalized at one of five Scripps Health hospitals in San Diego County from March 1, 2020 to July 30, 2020 with a PCR confirmed diagnosis of COVID-19 and blood type on record were included in the initial analysis (n = 316). Demographic, laboratory and clinical data were extracted from the electronic medical record and included age, ethnicity, BMI, sex, medications, co-morbidities and admission white blood cell and lymphocyte count, hemoglobin, platelets, ESR, CRP and D-dimer. Outcomes of interest included length of hospitalization, intensive care unit (ICU) admission, mechanical ventilation need, and mortality. Significant associations between each parameter of interest and blood group type were determined using either linear or logistic regression analysis. To address potential confounding variables, an adjusted multivariate model accounting for potential significant (p< 0.1) predictors of each outcome on univariate analysis, in addition to blood type groups, was conducted to further refine any associations. The study was approved by the Scripps Health Institutional Review Board.Results:316 patients met inclusion criteria for analysis. Hospitalized COVID patients were predominantly male, obese (BMI 30.6) and were an average age of 63 years. Almost 70% of patients hospitalized were Hispanic. 57.0% of patients were blood type O, 30.4% were type A, 3.8% were type B and 8.9% were type AB. 7% were Rh negative. Median length of hospital stay was 16.5±14.7 days, 59% were admitted to the ICU, 37% were intubated, and 27% died. Further relevant laboratory values on admission, co-morbidities, and medications administered during hospitalization are summarized in Table 1. Blood type, with or without adjusting for other clinical variables, was not predictive of length of hospital stay, ICU admission, or intubation during the hospitalization. Type B blood alone was associated with decreased odds of death (OR: 0.27, 95% CI: 0.06-0.85, p<0.05), though this effect was not seen after adjusting for significant confounding variables (OR: 0.39, 95% CI: 0.08-1.43, p>0.18).Conclusion:In this large, multi-hospital, retrospective analysis of patients hospitalized for COVID-19 in San Diego County, there was a low relative percentage of Rh negative blood type and type B blood compared to historical population averages. Blood type was not determined to be independently associated with hospital length of stay, mechanical ventilation, ICU admission or death. ABO/Rh blood typing appears to have a limited prognostic role in COVID-19 severity of hospitalized patients, though further analysis of the protective effects of type B and/or Rh negative blood type may be warranted in a larger sample.DisclosuresNo relevant conflicts of interest to declare.

Clinical Practice Guideline Nonadherence and Patient Outcomes in Pediatric Appendicitis

BackgroundClinical practice guidelines (CPGs) have been associated with improved patient outcomes. We aimed to evaluate institutional CPG adherence and hypothesized that adherence would be associated with fewer complications in pediatric appendicitis. MethodsA retrospective review was conducted of pediatric (<18 y) appendicitis patients who underwent appendectomy (6/1/2017-5/30/2018). Patients were managed using an institutional pediatric appendicitis CPG. The primary outcome was CPG adherence, defined as receipt of preoperative antibiotics at diagnosis, surgical prophylaxis before incision, and, in perforated/gangrenous appendicitis, continued postoperative antibiotics, and prescription for discharge antibiotics. Univariate and multivariate analyzes were performed. ResultsAmong 399 patients, the baseline characteristics were similar between CPG-adherent and nonadherent patients. Overall CPG adherence was low at 55% (n = 221). Only 58% of patients received preoperative antibiotics per protocol (n = 233). Patients with simple appendicitis were more likely to proceed to surgery without receiving any preoperative antibiotics (35% vs. 21%, P = 0.004). Surgical prophylaxis compliance was high at 97% (n = 389). CPG violation was associated with reoperation (n = 5 versus 0, P = 0.02). After adjusting for age and admission white blood cell count, the association between CPG adherence and postoperative surgical site infection or intra-abdominal abscess remained nonsignificant (OR: 1.2, 95% CI: 0.5-2.5). ConclusionsDespite a long-standing pediatric appendicitis CPG, adherence with antibiotic components of the CPG was poor. CPG violation was significantly associated with reoperation, but was not associated with other postoperative complications. Regular audits of CPG adherence are necessary to ascertain reasons for noncompliance and identify ways to improve adherence.

Long-Term Risk of Major Adverse Cardiovascular Events in Patients With Acute Coronary Syndrome: Prognostic Role of Complete Blood Cell Count.

Individual parameters of complete blood count (CBC) have been associated with worse outcome in patients with acute coronary syndrome (ACS). However, the prognostic role of CBC taken as a whole has never been evaluated for long-term incidence of major adverse cardiovascular events (MACEs). Patients were grouped according to their hematopoietic cells' inflammatory response at different time points during hospital stay. Patients with admission white blood cell count >10 × 109/L, discharge hemoglobin <120 g/L, and discharge platelet count >250 × 109/L were defined as "high-risk CBC." Among 1076 patients with ACS discharged alive, 129 (12%) had a "high-risk CBC" and 947 (88%) had a "low-risk CBC." Patients with "high-risk CBC" were older and had more comorbidities. Over a median follow-up of 665 days, they experienced a higher incidence of MACE compared to "low-risk CBC" patients (18.6% vs 8.1%). After adjustment for age, age-adjusted Charlson comorbidity index, female sex, cardiac arrest, suboptimal discharge therapy, coronary artery bypass, and ejection fraction, a high-risk CBC was significantly associated with increased MACE occurrence (adjusted hazard ratio 1.80; 95% CI: 1.09-3.00). The CBC was a prognostic marker in patients with ACS, and its evaluation at admission and discharge could better classify patient's risk and improve therapeutic management.

The elevated admission white blood cell count relates to adverse surgical outcome of acute Stanford type a aortic dissection

BackgroundThe purpose of the study was to examine the association between white blood cell count (WBCc) on admission and early outcome in patients with the acute Stanford type A aortic dissection (TAAD).MethodsFrom January 2012 to December 2018, we retrospectively evaluated a series of 331 consecutive patients underwent surgery for TAAD in Tongji Hospital. The patients were divided into 2 groups based on the WBCc, i.e. the normal WBCc group (WBCc≤11 × 109/L) and leukocytosis group (WBCc> 11 × 109/L). The perioperative data were compared between the 2 groups. The in-hospital mortality and the compositive adverse event including multi-organ dysfunction syndrome, postoperative stroke, tracheotomy, and re-exploration for stopping bleeding were set as end points. Cox regression were used to assess the potential risk factors.ResultsThe in-hospital mortality was nearly 3 time higher in the leukocytosis group than in the normal WBCc group (20.9% vs.8.1%, P = 0.001), and 15.1% overall. For the circulatory arrest, there was significant higher mortality in patients with leukocytosis than normal WBCc group (26.1%vs.8.9%, P = 0.001). After adjustment for confounding factors, the leukocytosis was found to be a strong independent predictor of in-hospital mortality (odds ratio = 3.10; 95% confidence interval 1.38 to 6.97, P = 0.006). The leukocytosis was also a risk factor of adverse events (odds ratio = 1.80; 95% confidence interval 1.07 to 3.04, P = 0.027).ConclusionsThe WBCc within 24 h of admission for TAAD is a strong and independent predictor of in-hospital mortality as well as short-term clinical events. The results of this study have important clinical implications for risk-stratifying patients with TAAD.

Factors related to white blood cell elevation in acute type A aortic dissection.

Aortic dissection may induce a systemic inflammatory reaction. The etiological backgrounds for elevation of the white blood cell count remain to be clarified. In 466 patients with acute type A aortic dissection treated surgically within 48 hours of symptom onset, the etiologic background of an elevated admission white blood cell count and the effect of such elevation on outcomes were assessed retrospectively. Patients’ white blood cell count differed significantly in relation to the extent of dissection, with a median (25th, 75th percentile) white blood cell count of 10.4 (8.1, 13.9) x 103/μL for dissection confined to the ascending aorta, 10.5 (8.2,13.) 103/μL for dissection extending to the aortic arch/descending aorta, 11.1 (8.2, 13.7) x 103/μL for extension to the abdominal aorta, and 13.3 (9.8, 15.9) x 103/μL for extension to the iliac artery (p<0.001). With 11.0 x 103/μL used as the cut-off value for white blood cell count elevation, multivariable analysis showed current smoking (p<0.001; odds ratio, 2.79), dissection extending to the iliac artery (p = 0.006; odds ratio, 1.79), age (p = 0.007, odds ratio, 0.98), and no coronary ischemia (p = 0.027, odds ratio, 2.22) to be factors related to the elevated white blood cell count. Mean age differed significantly between patients with and without an elevated white blood cell count (62.3 vs. 68.3 years, p <0.001). Although in-hospital mortality was similar (7.5% vs.10.9%, p = 0.19), 5-year survival was lower in patients without an elevated count (85.7% vs. 78.6%, p = 0.019), reflecting their more advanced age. In conclusion, our data suggest that dissection morphology and patient age influence the acute phase systemic inflammatory response associated with an elevated white blood cell count in patients with ATAAD. A better understanding of this relation may help optimize diagnosis and perioperative care.

Risk factors affecting post-traumatic acute respiratory distress syndrome development in thoracic trauma patients

This study aims to investigate the risk factors affecting post-traumatic acute respiratory distress syndrome development in thoracic trauma patients. This two-centered, retrospective study included 3,080 thoracic trauma patients (2,562 males, 518 females; mean age 33.9±19.4 years; range, 2 months to 91 years) treated between January 2005 and January 2019. Demographic characteristics, mechanisms of injury, traumatic injuries, injury severity score and new injury severity score results, treatments, comorbidities, complications, morbidity and mortality rates, and durations of hospital stay were collected. Data were used to predict the risk factors for development of post-traumatic acute respiratory distress syndrome by univariate and multivariate statistical analysis. Acute respiratory distress syndrome was detected in 81 patients. In multivariate logistic regression analysis; age, pulmonary contusion, intracranial hemorrhage, rib fracture (unilateral and four-five pieces), femur and tibia fracture, diabetes mellitus, chronic obstructive pulmonary disease, blood transfusion (≥3 units), high white blood cell count at admission, sepsis, and hepatic injury were detected as independent risk factors (p<0.05). Optimal cutoff points (sensitivity/specificity ratios) for acute respiratory distress syndrome development risk were ≥16 (79%/68%) for injury severity score, ≥27 (90%/68.7%) for new injury severity score, and ≥16,000 (75.3%/71.6%) for admission white blood cell count. New injury severity score was superior than injury severity score to predict the development of acute respiratory distress syndrome. Acute respiratory distress syndrome causes significant mortality and morbidity in trauma patients. In addition to the well-known risk factors, diabetes mellitus and chronic obstructive pulmonary disease were independent risk factors. We defined a cutoff value for new injury severity score to predict post-traumatic acute respiratory distress syndrome.

Admission white blood cell count is associated with stroke severity and outcome independent of acute infarct size (P2.236)

Admission white blood cell count is associated with stroke severity and outcome independent of acute infarct size (P2.236)