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  1. Article: The Spectrum of Clinical and Serological Features of COVID-19 in Urban Hemodialysis Patients.

    Stock da Cunha, Teresa / Gomá-Garcés, Elena / Avello, Alejandro / Pereira-García, Mónica / Mas-Fontao, Sebastian / Ortiz, Alberto / González-Parra, Emilio

    Journal of clinical medicine

    2020  Volume 9, Issue 7

    Abstract: Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment ... ...

    Abstract Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment responses and mortality are poorly characterized.
    Material and methods: Clinical and analytical features, chest X-ray, polymerase chain reaction (PCR) and antibodies for SARS-CoV-2, treatment and outcomes were analyzed in 48 patients diagnosed with COVID-19 during March and April 2020 in two coordinated Spanish hemodialysis units.
    Results: In 200 haemodialysis patients, COVID-19 was diagnosed in 48, of whom 22 were PCR positive, eight PCR negative but seroconverted and two were diagnosed on typical clinical grounds. Despite a mean age of 72.6 years, the overall mortality rate was 5/48 (10%). Among the PCR positive patients, 21 (55%) required admission and five (13%) died. PCR positive patients were more often symptomatic and hospitalized and had higher troponin I levels than PCR negative patients, but did not differ in lymphocyte counts, D-dimer or interleukin-6 (IL-6) levels. Among PCR negative COVID-19 patients, three out of 10 (30%) required admission, and none died. The most frequent symptom among the 48 patients was fever (31%), followed by asymptomatic patients (23%). A low number of lymphocytes was the only parameter significantly different between hospitalized and ambulatory COVID-19 patients, independently of PCR status.
    Conclusions: COVID-19 hemodialysis patients are frequently asymptomatic, and mortality may be lower than previously reported. Diagnosis may be retrospective, based on seroconversion, as PCR may be negative. This information should guide preventive and patient isolation strategies.
    Keywords covid19
    Language English
    Publishing date 2020-07-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm9072264
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Clinical Features of Asymptomatic SARS-CoV-2 Infection in Hemodialysis Patients.

    Pizarro-Sánchez, Maria Soledad / Avello, Alejandro / Mas-Fontao, Sebastian / Stock da Cunha, Teresa / Goma-Garcés, Elena / Pereira, Mónica / Ortíz, Alberto / González-Parra, Emilio

    Kidney & blood pressure research

    2021  Volume 46, Issue 1, Page(s) 126–134

    Abstract: Background: CKD is a risk factor for severe COVID-19. However, the clinical spectrum of COVID-19 in hemodialysis patients is still poorly characterized.: Objective: To analyze the clinical spectrum of COVID-19 on hemodialysis patients.: Method: A ... ...

    Abstract Background: CKD is a risk factor for severe COVID-19. However, the clinical spectrum of COVID-19 in hemodialysis patients is still poorly characterized.
    Objective: To analyze the clinical spectrum of COVID-19 on hemodialysis patients.
    Method: A retrospective observational study was conducted on 66 hemodialysis patients. Nasopharyngeal swab PCR and serology for SARS-CoV-2, blood analysis, chest radiography, treatment, and outcomes were assessed.
    Results: COVID-19 was diagnosed in 50 patients: 38 (76%) were PCR-positive and 12 (24%) were PCR-negative but developed anti-SARS-CoV-2 antibodies. By contrast, 17% of PCR-positive patients failed to develop detectable antibodies against SARS-CoV-2. Among PCR-positive patients, 5/38 (13%) were asymptomatic, while among PCR-negative patients 7/12 (58%) were asymptomatic (p = 0.005) for a total of 12/50 (24%) asymptomatic patients. No other differences were found between PCR-positive and PCR-negative patients. No differences in potential predisposing factors were found between asymptomatic and symptomatic patients except for a lower use of ACE inhibitors among asymptomatic patients. Asymptomatic patients had laboratory evidence of milder disease such as higher lymphocyte counts and oxygen saturation and lower troponin I and interleukin-6 levels than symptomatic patients. Overall mortality was 7/50 (14%) and occurred only in symptomatic PCR-positive patients in whom mortality was 7/33 (21%).
    Conclusions: Asymptomatic SARS-CoV-2 infection is common in hemodialysis patients, especially among patients with initial negative PCR that later seroconvert. Thus COVID-19 mortality in hemodialysis patients may be lower than previously estimated based on PCR tests alone.
    MeSH term(s) Aged ; Aged, 80 and over ; Asymptomatic Diseases/epidemiology ; COVID-19/blood ; COVID-19/diagnosis ; COVID-19/epidemiology ; Female ; Humans ; Male ; Middle Aged ; Renal Dialysis/trends ; Renal Insufficiency, Chronic/blood ; Renal Insufficiency, Chronic/diagnosis ; Renal Insufficiency, Chronic/epidemiology ; Retrospective Studies
    Language English
    Publishing date 2021-01-27
    Publishing country Switzerland
    Document type Journal Article ; Observational Study
    ZDB-ID 1326018-2
    ISSN 1423-0143 ; 1420-4096
    ISSN (online) 1423-0143
    ISSN 1420-4096
    DOI 10.1159/000512535
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Spectrum of Clinical and Serological Features of COVID-19 in Urban Hemodialysis Patients

    Teresa Stock da Cunha / Elena Gomá-Garcés / Alejandro Avello / Mónica Pereira-García / Sebastian Mas-Fontao / Alberto Ortiz / Emilio González-Parra

    Journal of Clinical Medicine, Vol 9, Iss 2264, p

    2020  Volume 2264

    Abstract: Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment responses ...

    Abstract Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment responses and mortality are poorly characterized. Material and Methods: Clinical and analytical features, chest X-ray, polymerase chain reaction (PCR) and antibodies for SARS-CoV-2, treatment and outcomes were analyzed in 48 patients diagnosed with COVID-19 during March and April 2020 in two coordinated Spanish hemodialysis units. Results: In 200 haemodialysis patients, COVID-19 was diagnosed in 48, of whom 22 were PCR positive, eight PCR negative but seroconverted and two were diagnosed on typical clinical grounds. Despite a mean age of 72.6 years, the overall mortality rate was 5/48 (10%). Among the PCR positive patients, 21 (55%) required admission and five (13%) died. PCR positive patients were more often symptomatic and hospitalized and had higher troponin I levels than PCR negative patients, but did not differ in lymphocyte counts, D-dimer or interleukin-6 (IL-6) levels. Among PCR negative COVID-19 patients, three out of 10 (30%) required admission, and none died. The most frequent symptom among the 48 patients was fever (31%), followed by asymptomatic patients (23%). A low number of lymphocytes was the only parameter significantly different between hospitalized and ambulatory COVID-19 patients, independently of PCR status. Conclusions: COVID-19 hemodialysis patients are frequently asymptomatic, and mortality may be lower than previously reported. Diagnosis may be retrospective, based on seroconversion, as PCR may be negative. This information should guide preventive and patient isolation strategies.
    Keywords COVID-19 ; hemodialysis ; chronic kidney disease ; antibodies ; asymptomatic ; mortality ; Medicine ; R ; covid19
    Subject code 610 ; 616
    Language English
    Publishing date 2020-07-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: The Spectrum of Clinical and Serological Features of COVID-19 in Urban Hemodialysis Patients

    Stock da Cunha, Teresa / Gomá-Garcés, Elena / Avello, Alejandro / Pereira-García, Mónica Mas-Fontao / Sebastian, Ortiz / Alberto, González-Parra Emilio

    Journal of Clinical Medicine

    Abstract: Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection There is still limited evidence on hemodialysis patients and COVID-19 The clinical and analytical spectrum and treatment responses ... ...

    Abstract Introduction: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection There is still limited evidence on hemodialysis patients and COVID-19 The clinical and analytical spectrum and treatment responses and mortality are poorly characterized Material and Methods: Clinical and analytical features, chest X-ray, polymerase chain reaction (PCR) and antibodies for SARS-CoV-2, treatment and outcomes were analyzed in 48 patients diagnosed with COVID-19 during March and April 2020 in two coordinated Spanish hemodialysis units Results: In 200 haemodialysis patients, COVID-19 was diagnosed in 48, of whom 22 were PCR positive, eight PCR negative but seroconverted and two were diagnosed on typical clinical grounds Despite a mean age of 72 6 years, the overall mortality rate was 5/48 (10%) Among the PCR positive patients, 21 (55%) required admission and five (13%) died PCR positive patients were more often symptomatic and hospitalized and had higher troponin I levels than PCR negative patients, but did not differ in lymphocyte counts, D-dimer or interleukin-6 (IL-6) levels Among PCR negative COVID-19 patients, three out of 10 (30%) required admission, and none died The most frequent symptom among the 48 patients was fever (31%), followed by asymptomatic patients (23%) A low number of lymphocytes was the only parameter significantly different between hospitalized and ambulatory COVID-19 patients, independently of PCR status Conclusions: COVID-19 hemodialysis patients are frequently asymptomatic, and mortality may be lower than previously reported Diagnosis may be retrospective, based on seroconversion, as PCR may be negative This information should guide preventive and patient isolation strategies
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #654440
    Database COVID19

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  5. Article ; Online: The spectrum of clinical and serological features of COVID-19 in urban hemodialysis patients

    Stock da Cunha, Teresa / Gomá-Garcés, Elena / Avello, Alejandro / Pereira-García, Mónica / Mas-Fontao, Sebastian / Ortiz, Alberto / González-Parra, Emilio

    2020  

    Abstract: The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment responses and mortality ...

    Abstract The inherent immunosuppression of uremia increases the susceptibility of hemodialysis patients to infection. There is still limited evidence on hemodialysis patients and COVID-19. The clinical and analytical spectrum and treatment responses and mortality are poorly characterized. Material and Methods: Clinical and analytical features, chest X-ray, polymerase chain reaction (PCR) and antibodies for SARS-CoV-2, treatment and outcomes were analyzed in 48 patients diagnosed with COVID-19 during March and April 2020 in two coordinated Spanish hemodialysis units. Results: In 200 haemodialysis patients, COVID-19 was diagnosed in 48, of whom 22 were PCR positive, eight PCR negative but seroconverted and two were diagnosed on typical clinical grounds. Despite a mean age of 72.6 years, the overall mortality rate was 5/48 (10%). Among the PCR positive patients, 21 (55%) required admission and five (13%) died. PCR positive patients were more often symptomatic and hospitalized and had higher troponin I levels than PCR negative patients, but did not differ in lymphocyte counts, D-dimer or interleukin-6 (IL-6) levels. Among PCR negative COVID-19 patients, three out of 10 (30%) required admission, and none died. The most frequent symptom among the 48 patients was fever (31%), followed by asymptomatic patients (23%). A low number of lymphocytes was the only parameter significantly different between hospitalized and ambulatory COVID-19 patients, independently of PCR status. Conclusions: COVID-19 hemodialysis patients are frequently asymptomatic, and mortality may be lower than previously reported. Diagnosis may be retrospective, based on seroconversion, as PCR may be negative. This information should guide preventive and patient isolation strategies

    Research support from FIS ISCIII FEDER funds PI16/01298, PI15/00298, PI16/02057, PI16/01900, PI19/00815, DTS18/00032 ISCIII-RETIC REDinREN RD16/0009, CYTED IBERERC and Sociedad Madrileña de Nefrologia, ERA-PerMed-JTC2018 (KIDNEY ATTACK AC18/00064 and PERSTIGAN AC18/00071), Comunidad de Madrid CIFRA2 B2017/BMD-3686. to AO
    Keywords COVID-19 ; hemodialysis ; chronic kidney disease ; antibodies ; asymptomatic ; mortality ; Medicina ; covid19
    Language English
    Publishing date 2020-08-31T13:30:11Z
    Publisher MDPI
    Publishing country es
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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