Javier Guzmán Martínez

Dr. Javier Guzmán Martínez

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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26 April 2022 in Journal of Clinical Medicine
Verified
Journal Article
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AGAngie Gómez-Uranga
Angie Gómez-Uranga
JMJavier Guzmán Martínez
Javier Guzmán Martínez
PAPedro Jesús Esteve Atienzar
Pedro Jesús Esteve Atienzar
PWPhilip E Wikman-Jorgensen
Philip E Wikman-Jorgensen
JNJuan Manuel Núñez-Cruz
Juan Manuel Núñez-Cruz
VGVicente Giner-Galvañ
Vicente Giner-Galvañ
Aim: To assess the prevalence of malnutrition, frailty, and sarcopenia and the relationships between them in patients hospitalized for COVID-19. Methods: This was a cross-sectional study of the prevalence, determinants, and associations between malnutrition (GLIM 2019 criteria), sarcopenia (SARC-F scale, dynamometry, and calf circumference), and frailty (FRAIL scale) upon discharge following hospitalization for COVID 19. Results: A total of 101 patients (67.3% men, mean age 66.3 years) were recruited. Malnutrition was diagnosed in 49.5%, sarcopenia in 32.7%, and frailty in 28.7% of patients. Of the patients with malnutrition, 48% were also sarcopenic, and 42% were frail. There was a significant association between malnutrition and the severity of pneumonia according to the CURB-65 scale (odds ratio [OR] 2.61, p = 0.036), between sarcopenia and a Barthel score lower than 60 points (OR 29.52, p < 0.001), and between frailty and both a Barthel score lower than 60 points (OR 32.27, p < 0.001) and a length of hospital stay of over 30 days (OR 9.11, p = 0.008). Conclusions: Malnutrition, sarcopenia, and frailty are prevalent and interrelated entities in patients hospitalized for acute SARS CoV-2 infection, especially in patients with greater baseline functional impairment prior to admission and a higher infection severity.

26 November 2025 in Journal of Fungi
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Journal Article
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LELeticia Espinosa-del-Barrio
Leticia Espinosa-del-Barrio
EGElia Gomez
Elia Gomez
NÁNoelia Álvarez-Díaz
Noelia Álvarez-Díaz
JMJavier Guzmán Martínez
Javier Guzmán Martínez
MCMaría Dolores Corbacho-Loarte
María Dolores Corbacho-Loarte
FGFrancesca Gioia
Francesca Gioia
Background: Aspergillus endocarditis is a rare but life-threatening form of infective endocarditis that typically occurs in patients with a history of cardiac surgery, prosthetic valve implantation, or profound immunosuppression. Native valve involvement in non-traditional hosts remains exceptionally rare and is diagnostically challenging. Case presentation: We describe a 56-year-old woman with CREST syndrome and advanced liver disease awaiting transplantation who developed native aortic valve endocarditis. Blood cultures and serum biomarkers (galactomannan and β-d-glucan) were also negative. Transthoracic echocardiography revealed vegetation on the aortic valve. Valve replacement was performed, and Aspergillus fumigatus was isolated from two valve cultures. Liposomal amphotericin B was initiated; however, the patient died of multiorgan failure two weeks later. Systematic review: To contextualise this case, we conducted a systematic review of the literature following the PRISMA guidelines. We included microbiologically confirmed cases of native valve Aspergillus endocarditis based on valve or embolic tissue analysis. Forty-three studies met the inclusion criteria, comprising 45 patients in total. Data were independently extracted by two reviewers and narratively synthesised due to clinical heterogeneity. Conclusions: This case illustrates the diagnostic and therapeutic challenges of native-valve Aspergillus endocarditis in patients without classical risk factors for the disease. Early imaging and a high index of suspicion are crucial for diagnosis. Combined surgical and antifungal therapy remains the cornerstone of management, although the mortality rate remains high.

29 July 2022 in Hospital a Domicilio
Verified
Journal Article
Open access
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JMJavier Guzmán Martínez
Javier Guzmán Martínez
VBVerónica González Beneyto
Verónica González Beneyto
IIIsidro Hernández Isasi
Isidro Hernández Isasi
RVRafael López-Bas Valero
Rafael López-Bas Valero
Introducción: La digoxina se caracteriza por estrecho margen terapéutico que hace dificultosa su dosificación y sea necesaria una monitorización de sus niveles séricos. Esto se hace más complejo en pacientes con nefropatía crónica que precisan de un mayor ajuste de dosis. Desarrollo de la experiencia: Presentamos el caso de una mujer de 88 años admitida en nuestra unidad en tratamiento con digoxina oral por insuficiencia cardiaca crónica con pauta de 1 comprimido diario con descanso los fines de semana, que presenta mal control de síntomas y niveles séricos de digoxina infraterapéuticos en controles. Al cambiar la formulación a jarabe oral pediátrico (Lanacordin® 0,05mg/mL) se consiguió un mejor nivel de los niveles del fármaco y del control de síntomas. Conclusiones: La utilización de la digoxina en jarabe oral puede ser una alternativa a la formulación con comprimidos, sobre todo en pacientes en los que el control de los niveles del fármaco puede resultar complejo por sus comorbilidades.