Zichen Ji

Dr. Zichen Ji

Pulmonology Service, Gregorio Marañón University General Hospital
orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 May 2020 in Thrombosis Research
Verified
Journal Article
Closed access
PDP. Demelo-Rodríguez
P. Demelo-Rodríguez
ECE. Cervilla-Muñoz
E. Cervilla-Muñoz
LOL. Ordieres-Ortega
L. Ordieres-Ortega
APA. Parra-Virto
A. Parra-Virto
MTM. Toledano-Macías
M. Toledano-Macías
FGFrancisco Galeano-Valle
Francisco Galeano-Valle

CMClara Maestre-Miquel
Clara Maestre-Miquel
Ana Lopez-de-AndresAna Lopez-de-Andres
Ana Lopez-de-Andres
ZJZichen Ji
Zichen Ji
JMJavier de Miguel-Díez
Javier de Miguel-Díez
ABArturo Brocate
Arturo Brocate
JZJose Javier Zamorano-Leon
Jose Javier Zamorano-Leon
Background: To assess gender differences in the prevalence of self-reported mental disorders, psychological distress and psychotropic drug consumption, and to identify sociodemographic and health-related variables associated with these conditions in the male and female population (aged ≥ 18 years). Methods: A cross-sectional study was carried on 22,141 subjects aged 18 and over, using data from the Spanish National Health Interview Survey 2017. Results: We found an overall prevalence of mental disorders, psychological distress and psychotropic drug consumption of 13.8%, 18.3% and 13.9%, respectively. After multivariable adjustment, women showed significantly increased probabilities of 1.74-fold for mental disorders, 1.26-fold for psychological distress and 1.26-fold for psychotropic drug consumption compared to men. Variables such as gender, age, nationality, marital status, educational level, self-rated health, the presence of different chronic disorders, alcohol consumption and smoking habit were independently associated with mental disorders, psychological distress and psychotropic drug consumption. Several variables showed a differential effect on mental health status and psychotropic drug consumption according to gender. Conclusions: Women suffer from mental disorders, experience psychological distress and consume psychotropic drugs significantly more than men in Spain. Possible explanations for these results may be related to differences in emotional processing, willingness to report diseases and even intrinsic biological traits. Screening for mental health status and psychotropic drug consumption should be considered, particularly in Spanish women, younger adults and individuals who are not married, are obese, have poor self-rated health, suffer from chronic diseases or have a smoking habit.

20 February 2021 in European Journal of Haematology
Verified
Journal Article
Open access
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Pablo Demelo‐RodríguezPablo Demelo‐Rodríguez
Pablo Demelo‐Rodríguez
LOLucía Ordieres‐Ortega
Lucía Ordieres‐Ortega
ZJZichen Ji
Zichen Ji
JTJorge del Toro‐Cervera
Jorge del Toro‐Cervera
JMJavier de Miguel‐Díez
Javier de Miguel‐Díez
FGFrancisco Galeano-Valle
Francisco Galeano-Valle
Introduction: COVID‐19 predisposes patients to a higher risk of venous thromboembolism (VTE), although the extent of these implications is unclear and the risk of bleeding has been poorly evaluated. To date, no studies have reported long‐term outcomes of patients with COVID‐19 and VTE.Method: Prospective observational study to evaluate long‐term (90 days or more) outcomes of patients diagnosed with VTE (PE, DVT of the extremities, or both) in the setting of COVID‐19. The main outcome of the study was a compound of major bleeding and death.Results: The study comprised 100 patients (mean age 65 ± 13.9 years). At the time of VTE diagnosis, 66% patients were hospitalized, 34.8% of them in the ICU. Mean follow‐up was 97.9 ± 23.3 days. During the study period, 24% patients died and median time to death was 12 (IQR: 2.25‐20.75) days, 11% patients had major bleeding and median time to event was 12 (IQR: 5‐16) days. The cause of death was PE in 5% and bleeding in 2% of patients. There were no VTE recurrences. The main study outcome occurred in 29% patients. Risk of death or major bleeding was independently associated with ICU admission (HR 12.2; 95% CI 3.0‐48.3), thrombocytopenia (HR 4.5; 95% CI 1.2‐16.5), and cancer (HR 21.6; 95% CI 1.8‐259).Conclusion: In patients with COVID‐19 and VTE, mortality and major bleeding were high and almost a third of deaths were VTE‐related. The majority of complications occurred in the first 30 days. ICU admission, thrombocytopenia, and cancer are risk factors for poor prognosis.

17 October 2020 in International Journal Of Clinical Practice
Verified
Journal Article
Closed access
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Ana Lopez-de-AndresAna Lopez-de-Andres
Ana Lopez-de-Andres
RARomana Albaladejo-Vicente
Romana Albaladejo-Vicente
JMJavier Miguel‐Diez
Javier Miguel‐Diez
VHValentín Hernández‐Barrera
Valentín Hernández‐Barrera
ZJZichen Ji
Zichen Ji
RGRodrigo Jiménez Garcia
Rodrigo Jiménez Garcia

18 June 2020 in BMJ Open Diabetes Research & Care
Verified
Journal Article
Open access
PDF file
ALAna Lopez-De-Andres
Ana Lopez-De-Andres
RARomana Albaladejo-Vicente
Romana Albaladejo-Vicente
JMJavier de Miguel-Diez
Javier de Miguel-Diez
VHValentin Hernandez-Barrera
Valentin Hernandez-Barrera
ZJZichen Ji
Zichen Ji
RJRodrigo Jimenez-Garcia
Rodrigo Jimenez-Garcia
Introduction To describe the incidence and compare in-hospital outcomes of community-acquired pneumonia (CAP), ventilator-associated pneumonia (VAP) and non-ventilator hospital-acquired pneumonia (NV-HAP) among patients with or without type 2 diabetes mellitus (T2DM) using propensity score matching. Research design and methods This was a retrospective observational epidemiological study using the 2016–2017 Spanish Hospital Discharge Records. Results Of 245 221 admissions, CAP was identified in 227 524 (27.67% with T2DM), VAP was identified in 2752 (18.31% with T2DM) and NV-HAP was identified in 14 945 (25.75% with T2DM). The incidence of pneumonia was higher among patients with T2DM (CAP: incidence rate ratio (IRR) 1.44, 95% CI 1.42 to 1.45; VAP: IRR 1.24, 95% CI 1.12 to 1.37 and NV-HAP: IRR 1.38, 95% CI 1.33 to 1.44). In-hospital mortality (IHM) for CAP was 12.74% in patients with T2DM and 14.16% in matched controls (p<0.001); in patients with VAP and NV-HAP, IHM was not significantly different between those with and without T2DM (43.65% vs 41.87%, p=0.567, and 29.02% vs 29.75%, p=0.484, respectively). Among patients with T2DM, older age and dialysis were factors associated with IHM for all types of pneumonia. In patients with VAP, the risk of IHM was higher in females (OR 1.95, 95% CI 1.28 to 2.96). Conclusion The incidence rates of all types of pneumonia were higher in patients with T2DM. Higher mortality rates in patients with T2DM with any type of pneumonia were associated with older age, comorbidities and dialysis.

25 April 2022 in European Journal of Pediatrics
Verified
Journal Article
Open access
PDF file
JMJavier de Miguel-Díez
Javier de Miguel-Díez
Ana Lopez-de-AndresAna Lopez-de-Andres
Ana Lopez-de-Andres
VHValentín Hernández-Barrera
Valentín Hernández-Barrera
JMJavier de Miguel-Díez
Javier de Miguel-Díez
David Carabantes-AlarcónDavid Carabantes-Alarcón
David Carabantes-Alarcón
RGRodrigo Jiménez Garcia
Rodrigo Jiménez Garcia
The aim of this study is to examine trends from 2016 to 2019 in the incidence of hospitalizations and in-hospital mortality (IHM) of subjects < 18 years with community-acquired pneumonia (CAP), assessing possible sex differences. We used Spanish national hospital discharge data to select all patients < 18 years with CAP. We identified 43,511 children (53% boys) hospitalized with CAP. The incidence of CAP was significantly higher in boys than in girls, with an age-adjusted incidence rate ratio of 1.05 (95%CI 1.03–1.07) for boys compared to girls, and rose from 126 per 100,000 children in 2016 to 131 in 2019 (p < 0.0001). There were no sex differences in isolated pathogens, comorbidities, length of hospital stay, or IHM. Variables independently associated with IHM were age 10 to 17 years, congenital heart disease, neurological diseases, and use of invasive mechanical ventilation. Asthma was a protective factor for IHM among girls.Conclusion: The incidence of hospital admissions for CAP was higher among boys than among girls and rose significantly from 2016 to 2019. There were no sex differences in hospital outcomes. Age 10 to 17 years, congenital heart disease, neurological diseases, and use of mechanical ventilation were risk factors for IHM in both sexes, while asthma was a protective factor among girls. No differences were found in IHM over time. What is Known:• Community-acquired pneumonia is one of the most common reasons for hospitalizations among children.• There are few studies that allow to know the evolution of community-acquired pneumonia in children. What is New:• Incidence of hospital admissions for community-acquired pneumonia was higher in boys than girls and it rose significantly from 2016 to 2019.• Age 10 to 17 years, congenital heart disease, neurological diseases and use of mechanical ventilation were risk factors for in-hospital mortality in both sexes.