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This research received no external funding. EGP, SM and AO research groups are funded by Ministerio de Economia, Industria y competitividad: FIS/Fondos FEDER (PI16/01298, PI17/00257, PI18/01386, PI19/00588, PI19/00815, PI20/00487, PI21/01430, ERA-PerMed-JTC2018 (KIDNEY ATTACK AC18/00064 and PERSTIGAN AC18/00071, ISCIII-RETIC REDinREN RD016/0009), and Sociedad Espanola de Nefrologi ' a, Comunidad de Madrid en Biomedicina B2017/BMD-3686 CIFRA2-CM. All authors want to thank Fundacio ' n RenalI ' nigoA ' lvarez de Toledo (FRIAT) for it support to renal research in Spain. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Analysis of institutional authors

Gracia-Iguacel CAuthorOrtiz AAuthorGonzalez-Parra ECorresponding Author

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Article

Sarcopenia assessed by 4-step EWGSOP2 in elderly hemodialysis patients: Feasibility and limitations

Publicated to:PLoS ONE. 17 (1): e0261459-e0261459 - 2022-01-01 17(1), DOI: 10.1371/journal.pone.0261459

Authors: Sánchez-Tocino ML, Miranda-Serrano B, Gracia-Iguacel C, de-Alba-Peñaranda AM, Mas-Fontao S, López-González A, Villoria-González S, Pereira-García M, Ortíz A, González-Parra E

Affiliations

CIBERDEM, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain. - Author
Complejo Hosp Univ A Coruna, La Coruna, Spain - Author
Complejo Hospitalario Universitario A Coruña, A Coruña, Spain. - Author
Fdn Renal Inigo Aivarez de Toledo, Salamanca, Spain - Author
Fdn Renal Inigo Alvarez de Toledo, Madrid, Spain - Author
Fundación Renal Iñigo Alvarez de Toledo, Madrid, Spain. - Author
Fundación Renal Íñigo Álvarez de Toledo, Salamanca, Spain. - Author
IIS Fdn Jimenez Diaz UAM, CIBERDEM, Madrid, Spain - Author
IIS FJD UAM, Fdn Jimenez Diaz, Serv Nefrol & Hipertens, Madrid, Spain - Author
Servicio de Nefrología e Hipertensión, Fundación Jiménez Díaz, IIS-FJD UAM, Madrid, Spain. - Author
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Abstract

In 2019, EWGSOP2 proposed 4 steps to diagnose and assess sarcopenia. We aimed to quantify the prevalence of sarcopenia according to the EWGSOP2 diagnostic algorithm and to assess its applicability in elderly patients on hemodialysis.Prospective study of 60 outpatients on chronic hemodialysis aged 75- to 95-years, sarcopenia was assessed according to the 4-step EWGSOP2: Find: Strength, Assistance walking, Rise from a chair, Climb stairs, and Falls (SARC-F); Assess: grip strength by dynamometry (GSD) and sit to stand to sit 5 (STS5); Confirm: appendicular skeletal muscle mass (ASM) by bioimpedance; Severity: gait speed (GS), Timed-Up and Go (TUG), and Short Physical Performance Battery (SPPB).The sequential four steps resulted in a prevalence of confirmed or severe sarcopenia of 20%. Most (97%) patients fulfilled at least one criterion for probable sarcopenia. The sensitivity of SARC-F for confirmed sarcopenia was low (46%). Skipping the SARC-F step increased the prevalence of confirmed and severe sarcopenia to 40% and 37%, respectively. However, 78% of all patients had evidence of dynapenia consistent with severe sarcopenia. Muscle mass (ASM) was normal in 60% of patients, while only 25% had normal muscle strength values (GSD).According to the 4-step EWGSOP2, the prevalence of confirmed or severe sarcopenia was low in elderly hemodialysis patients. The diagnosis of confirmed sarcopenia underestimated the prevalence of dynapenia consistent with severe sarcopenia. Future studies should address whether a 2-step EWGSOP2 assessment (Assess-Severity) is simpler to apply and may provide better prognostic information than 4-step EWGSOP2 in elderly persons on hemodialysis.

Keywords

ageassociationconsensusdialysisfrailtypredictorprevalenceMortality

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal PLoS ONE due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.9, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 7.74 (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-20, the following number of citations:

  • WoS: 5
  • Scopus: 12
  • Europe PMC: 3
  • OpenCitations: 11

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-20:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 71.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 71 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 9.35.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 12 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/711216

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (GONZALEZ PARRA, EMILIO JOSE).

the author responsible for correspondence tasks has been GONZALEZ PARRA, EMILIO JOSE.