Evidence map›Paper›PMID 32583302›Full record

ReviewCell and tissue banking2021

The time has come to extend the expiration limit of cryopreserved allograft heart valves.

Jan Burkert, Petra Kochová, Zbyněk Tonar, Robert Cimrman, Tereza Blassová, Ramadan Jashari, Radovan Fiala, Jaroslav Špatenka

Abstract readReview
PubMed Publisher
In one paragraph

Review in Cell and tissue banking, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.3field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 14 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Jan BurkertDepartment of Transplantation and Tissue Banking, Czech National Allograft Heart Valve Bank, Department of Cardiovascular Surgery, Motol University Hospital, and Second Faculty of Medicine Charles University in Prague, V Úvalu 84, 150 06, Prague, Czech Republic.ORCID http://orcid.org/0000-0002-3388-0804
Petra KochováDepartment of Transplantation and Tissue Banking, Czech National Allograft Heart Valve Bank, Department of Cardiovascular Surgery, Motol University Hospital, and Second Faculty of Medicine Charles University in Prague, V Úvalu 84, 150 06, Prague, Czech Republic. kochovap@ntc.zcu.cz.ORCID http://orcid.org/0000-0001-7411-3065
Zbyněk TonarNTIS - New Technologies for the Information Society, Faculty of Applied Sciences, University of West Bohemia, Technická 8, Pilsen, Czech Republic.ORCID http://orcid.org/0000-0002-7200-9894
Robert CimrmanNTIS - New Technologies for the Information Society, Faculty of Applied Sciences, University of West Bohemia, Technická 8, Pilsen, Czech Republic.ORCID http://orcid.org/0000-0002-2660-545X
Tereza BlassováDepartment of Histology and Embryology, Biomedical Centre, Faculty of Medicine in Pilsen, Charles University in Prague, Karlovarská 48, 301 66, Pilsen, Czech Republic.ORCID http://orcid.org/0000-0001-7260-563X
Ramadan JashariEuropean Homograft Bank, Saint-Jean Clinic, Rue du Meridien 100, 1210, Brussels, Belgium.ORCID http://orcid.org/0000-0002-0867-1998
Radovan FialaDepartment of Transplantation and Tissue Banking, Czech National Allograft Heart Valve Bank, Department of Cardiovascular Surgery, Motol University Hospital, and Second Faculty of Medicine Charles University in Prague, V Úvalu 84, 150 06, Prague, Czech Republic.ORCID http://orcid.org/0000-0003-2926-5881
Jaroslav ŠpatenkaDepartment of Transplantation and Tissue Banking, Czech National Allograft Heart Valve Bank, Department of Cardiovascular Surgery, Motol University Hospital, and Second Faculty of Medicine Charles University in Prague, V Úvalu 84, 150 06, Prague, Czech Republic.ORCID http://orcid.org/0000-0003-4307-6155
Charles University · CZClinique Saint Jean · BEUniversity of West Bohemia in Pilsen · CZ

Funding

Charles University Research Fund Progres Q39Czech Ministry of Education, Youth and Sports - NPU I LO1503Czech Ministry of Education, Youth and Sports - NPU I LO1506European Regional Development Fund-Project "Application of Modern Technologies in Medicine and Industry" CZ.02.1.01/0.0/0.0/17_048/0007280
6 · The paper itself

Abstract

Despite the wide choice of commercial heart valve prostheses, cryopreserved semilunar allograft heart valves (C-AHV) are required, and successfully transplanted in selected groups of patients. The expiration limit (EL) criteria have not been defined yet. Most Tissue Establishments (TE) use the EL of 5 years. From physiological, functional, and surgical point of view, the morphology and mechanical properties of aortic and pulmonary roots represent basic features limiting the EL of C-AHV. The aim of this work was to review methods of AHV tissue structural analysis and mechanical testing from the perspective of suitability for EL validation studies. Microscopic structure analysis of great arterial wall and semilunar leaflets tissue should clearly demonstrate cells as well as the extracellular matrix components by highly reproducible and specific histological staining procedures. Quantitative morphometry using stereological grids has proved to be effective, as the exact statistics was feasible. From mechanical testing methods, tensile test was the most suitable. Young's moduli of elasticity, ultimate stress and strain were shown to represent most important AHV tissue mechanical characteristics, suitable for exact statistical analysis. C-AHV are prepared by many different protocols, so as each TE has to work out own EL for C-AHV.

Indexed as

Aortic ValveCryopreservationAllograftsAortaElastic ModulusHumansCryopreservationExpiration limitHeart valve allograftMechanical measurementsQuantitative microscopyTissue banking

Identifiers

PMID32583302
OpenAlexW3037946929

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.