Publications by authors named "Xizhou Guan"

Aims: We investigate how fasting blood glucose (FBG) levels affect the clinical severity in coronavirus disease 2019 (COVID-19) patients, pneumonia patients with sole bacterial infection, and pneumonia patients with concurrent bacterial and fungal infections. Methods: We enrolled 2761 COVID-19 patients, 1686 pneumonia patients with bacterial infections, and 2035 pneumonia patients with concurrent infections. We used multivariate logistic regression analysis to assess the associations between FBG levels and clinical severity.

View Article and Find Full Text PDF

Background: Heart failure is currently divided into three main forms, HFrEF, HFpEF, and HFmrEF, but its etiology is diverse and highly heterogeneous. Many studies reported a variety of novel subgroups in heart failure patients, with unsupervised machine learning methods. The aim of this scoping review is to provide insights into how these techniques can diagnose and manage HF faster and better, thus providing direction for future research and facilitating its routine use in clinical practice.

View Article and Find Full Text PDF

Background: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been spreading globally. Information regarding the characteristics and prognosis of antibody non-responders to COVID-19 is limited.

Methods: In this retrospective, single-center study, we included all patients with confirmed COVID-19 using real-time reverse transcriptase-polymerase chain reaction (RT-PCR) admitted to the Fire God Mountain hospital from February 3, 2020, to April 14, 2020.

View Article and Find Full Text PDF

Background: We aimed to understand how glycaemic levels among COVID-19 patients impact their disease progression and clinical complications.

Methods: We enrolled 2,366 COVID-19 patients from Huoshenshan hospital in Wuhan. We stratified the COVID-19 patients into four subgroups by current fasting blood glucose (FBG) levels and their awareness of prior diabetic status, including patients with FBG<6.

View Article and Find Full Text PDF

Objectives: We aimed to identify high-risk factors for disease progression and fatality for coronavirus disease 2019 (COVID-19) patients.

Methods: We enrolled 2433 COVID-19 patients and used LASSO regression and multivariable cause-specific Cox proportional hazard models to identify the risk factors for disease progression and fatality.

Results: The median time for progression from mild-to-moderate, moderate-to-severe, severe-to-critical, and critical-to-death were 3.

View Article and Find Full Text PDF

The pandemic of Coronavirus Disease 2019 (COVID-19) is causing enormous loss of life globally. Prompt case identification is critical. The reference method is the real-time reverse transcription PCR (RT-PCR) assay, whose limitations may curb its prompt large-scale application.

View Article and Find Full Text PDF

It is widely recognized that hypertension is one of the major risk factor for disease severity and mortality in patients with coronavirus disease 2019 (COVID-19). However, type 2 diabetes mellitus (T2DM) and hypertension are frequent comorbid conditions, complicating the assessment of hypertension's individual contribution to the risk. The aims of this study were to evaluate the contributions of hypertension alone, T2DM alone, or their combination to the risk of death, acute respiratory distress syndrome (ARDS)/respiratory failure, and severe COVID-19 infection.

View Article and Find Full Text PDF

Objectives: This cross-sectional study aims to investigate the odds of developing angioedema (AE) in systemic lupus erythematosus (SLE) populations compared to non-SLE populations in hospital settings in the United States using a nationwide database.

Materials And Methods: We used the data from the National Inpatient Sample for the years 2012 to 2014. We constructed two models for multivariate logistic regression analysis.

View Article and Find Full Text PDF

Pulmonary metastases of endometrial stromal sarcoma (ESS) are uncommon and can be difficult to diagnose. The aims of the present study were to investigate the clinical and pathological features, and enhance the awareness of pulmonary metastases in patients with low-grade ESS. The study reports a case of low-grade ESS that resulted in cystic and nodular pulmonary metastases.

View Article and Find Full Text PDF

This study validated the RisingSun RS-651 blood pressure (BP) monitor based on auscultation in adults according to the American National Standards Institute/Association for the Advancement of Medical Instrumentation/International Organization for Standardization (ANSI/AAMI/ISO) 81060-2:2013 standard. The RS-651 device was evaluated in a study of 97 participants. The same arm simultaneous method, as defined in the ANSI/AAMI/ISO standard, was used.

View Article and Find Full Text PDF

Background: The number of reported cases, infected with carbepenem resistant Acinetobacter baumannii (CRAb) and multi-drug resistant (MDR) Acinetobacter species had gradually increased in most PLA general hospital wards from April to June in 2007.

Objectives: We have described the investigation of an outbreak of CRAb and MDR Acinetobacter in PLA general hospital, Beijing. The prospective and retrospective findings were identified and analyzed to study the infection causes.

View Article and Find Full Text PDF

Though aminoglycosides are routinely used clinically as antimicrobial agents for the treatment of severe infections due to Klebsiella pneumoniae, resistance to the same is an increasing problem. One such resistance mechanism is the production of 16S rRNA methylases. The objective of the current study was to investigate the prevalence and molecular epidemology of 16S rRNA methylase genes among 43 K.

View Article and Find Full Text PDF

Quinolones are a group of antimicrobial agents that were serendipitously discovered as byproducts of the synthesis of chloroquine. Chemical modifications, such as the addition of fluorine or piperazine, resulted in the synthesis of third- and fourth-generation fluoroquinolones, with broad-spectrum antimicrobial actions against aerobic or anaerobic, Gram-positive or Gram-negative bacteria. The efficacy and consequent widespread use of quinolones and fluoroquinolones has led to a steady global increase in resistance, mediated via gene mutations, alterations in efflux or cell membranes and plasmid-conferred resistance.

View Article and Find Full Text PDF

Objective: To investigate the outbreak of acinetobacter baumannii in the ICU, and to explore the antimicrobial resistance characteristics of pathogens, and therefore to determine the optimal prevention strategies.

Methods: From May to June 2007, most of the cases of infection by acinetobacter baumannii in our ICU were collected. PFGE (pulsed field gel electrophoresis) and standard disk diffusion susceptibility tests were performed on the strains isolated from the patients' body fluids including sputum, blood, urine, secretion and from the ICU environment involving the patients' bed sheet, skin surface and medical staff's hands, humidification water of ventilator tubes.

View Article and Find Full Text PDF

Objective: To study the resistant phenotype of a clinical strain of Escherichia coli and to explore the effect of its attenuator mutation on AmpC expression.

Methods: A clinical strain of Escherichia coli 20022 (ECO20022) resistant to cefoxitin was isolated clinically. The phenotype was examined by three-dimensional methods, isoelectric focusing (IEF), and microdilution method.

View Article and Find Full Text PDF

Objective: To study the prevalence, phenotype and genotype of the AmpC and ESBLs-producing clinical isolate of Klebsiella pneumoniae.

Methods: The clinical isolates of Klebsiella pneumoniae were examined by standard disk diffusion susceptibility tests, three-dimensional methods, isoelectric focusing (IEF) and microdilution methods. The conjugation experiment, multiplex PCR and DNA sequencing methods were used for further analysis.

View Article and Find Full Text PDF

Objective: To study the resistant phenotype and molecular biology character of plasmid mediated high AmpC-producing clinical isolates of Escherichia coli and to find new AmpC genotype.

Methods: The cefoxitin highly resistant clinical isolates of Escherichia coli were studied by K-B method, three-dimensional method, Isoelectric Focusing (IEF) and the MIC of these strains were examined by micro-dilution method. The conjugation experiment, multiplex PCR and DNA sequencing methods were used in further study.

View Article and Find Full Text PDF