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Titolo:
WEAR PATTERNS IN THE SORIN-BICARBON MECHANICAL HEART-VALVE - A CLINICAL EXPLANT STUDY
Autore:
HASENKAM JM; PASQUINO E; STACCHINO C; ARRU P; VALLANA F; PAULSEN PK;
Indirizzi:
AARHUS UNIV HOSP,DEPT CARDIOTHORAC & VASC SURG DK-8200 SKEJBY SYGEHUSDENMARK SORIN BIOMED CARDIO SPA I-13040 SALUGGIA VC ITALY
Titolo Testata:
Journal of heart valve disease
fascicolo: 2, volume: 6, anno: 1997,
pagine: 105 - 114
SICI:
0966-8519(1997)6:2<105:WPITSM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROSTHESIS; DURABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
J.M. Hasenkam et al., "WEAR PATTERNS IN THE SORIN-BICARBON MECHANICAL HEART-VALVE - A CLINICAL EXPLANT STUDY", Journal of heart valve disease, 6(2), 1997, pp. 105-114

Abstract

Background and aims of the study: Mechanical heart valve prostheses are subject to wear due to impact and friction between the occluder(s) and valve housing. Reference data on the extent of wear in vivo is lacking. Therefore, the aim of this study was to describe the wear pattern in Sorin Bicarbon valves explanted from humans for comparison with the findings established in an earlier in vitro study. Methods: We investigated eight valves explanted from seven patients, which had been functioning for more than six months and were returned to the Sorin Company for investigation. The protocol comprised: (i) initial visual inspection on receipt; (ii) stereomicroscopy after cleaning and disassembly; (iii) computed planimetry of the worn areas in the housing; (iv) pivot surface profilometry; and (v) scanning electron microscopy. Results: All wear depths and exposed areas of titanium were less than that predicted from in vitro figures. No valves were explanted due to mechanical failure and none of the patients had reported peripheral embolic events which could be attributed to valve wear. The extent of wear wascomparable with that of other valves. Conclusions: This descriptive study did not indicate any association between the Bicarbon valve wear characteristics and clinical complications. Clinical studies on valve performance are of paramount importance for elucidating this issue. The establishment of an independent body for studying explanted valves in collaboration with the manufacturers may promote the publication of findings which are of interest for the entire medical community.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 22:45:33