Prosthetic heart valves: Types and echocardiographic evaluation

Aslam, Ahmad Kamal; Aslam, Ahmad Faraz; Vasavada, Balendu C.; Khan, Ijaz A.

doi:10.1016/j.ijcard.2006.12.037

Cited by 27 publications

(24 citation statements)

References 96 publications

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“…With good compliance to anti-coagulant therapy, thrombosis is less likely to occur, but prosthetic valves might still have mechanical failure problems, such as pannus formation, prosthetic valve dysfunction, suture loosening (paravalvular leak) [3] and pseudoaneurysm formation [4]. Transthoracic or transesophageal echocardiography is usually limited by severe acoustic shadowing caused by the prosthetic valve itself, resulting in an incomplete evaluation [5,6]. Furthermore, the detection rate of pannus formation is so poor that a preoperative diagnosis is almost impossible [7].…”

Section: Introductionmentioning

confidence: 99%

Correctness of multi-detector-row computed tomography for diagnosing mechanical prosthetic heart valve disorders using operative findings as a gold standard

et al. 2008

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The purpose was to compare the findings of multi-detector computed tomography (MDCT) in prosthetic valve disorders using the operative findings as a gold standard. In a 3-year period, we prospectively enrolled 25 patients with 31 prosthetic heart valves. MDCT and transthoracic echocardiography (TTE) were done to evaluate pannus formation, prosthetic valve dysfunction, suture loosening (paravalvular leak) and pseudoaneurysm formation. Patients indicated for surgery received an operation within 1 week. The MDCT findings were compared with the operative findings. One patient with a Björk-Shiley valve could not be evaluated by MDCT due to a severe beam-hardening artifact; thus, the exclusion rate for MDCT was 3.2% (1/31). Prosthetic valve disorders were suspected in 12 patients by either MDCT or TTE. Six patients received an operation that included three redo aortic valve replacements, two redo mitral replacements and one Amplatzer ductal occluder occlusion of a mitral paravalvular leak. The concordance of MDCT for diagnosing and localizing prosthetic valve disorders and the surgical findings was 100%. Except for images impaired by severe beam-hardening artifacts, MDCT provides excellent delineation of prosthetic valve disorders.

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Section: Introductionmentioning

confidence: 99%

Correctness of multi-detector-row computed tomography for diagnosing mechanical prosthetic heart valve disorders using operative findings as a gold standard

et al. 2008

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“…Особенно акту-ализировался этот вопрос в связи с широким наступлением эндоваскулярных технологий и нередко с необоснованным расширением показаний к ним. Несмотря на достаточное количество публикаций, доказывающих на большом количестве случаев, что конвенциональные вмешательства на клапанах сердца остаются «золотым стандартом» и риск госпитальной летальности остается приемлемым [1,3], часто приходится встре-чать пациентов, которым было отказано в операции в связи с преклонным возрастом.…”

Section: Discussionunclassified

“…кардиология и сердечно-сосудистая хирургия, 5,2016 Постоянное улучшение конструкции и гемодинами-ческих характеристик клапанных механических протезов сердца привели к значительному увеличению сроков их службы в отдаленные сроки после операции [1]. Тем не менее все искусственные протезы, в той или иной степе-ни, продолжают ассоциироваться с различными осложне-ниями, приводящими к их дисфункции [2].…”

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Rotation of disk aortic prosthesis due to its dysfunction as an alternative to re-replacement in cardiac surgery

Камбаров¹,

Билько²,

Kambarov³

et al. 2016

Kardiol. serdechno-sosud. khir.

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“…Hufnagel in 1952(Hufnagel et al, 1954, the use of such prostheses has gained strong interest and has become a routine treatment for severe heart valve failure. During the past 60 years, various mechanical heart valve designs have been developed for use in both aortic and mitral positions (Butany et al, 2003;Aslam et al, 2007). Nowadays, bileaflet mechanical heart valves (BMHVs) are widely preferred for aortic valve replacement because of their long lifespan.…”

Section: Introductionmentioning

confidence: 99%

“…Also, the spectrum of the valve noise can be analyzed, as is done, for example, in Masson & Rieu (1998). Experimental in vivo testing is another option, using echocardiography and Doppler ultrasound to investigate the behavior of the valve after implantation in human patients (Bech-Hanssen, 2001;Aslam et al, 2007;Aljassim et al, 2008;Zogbi et al, 2009) or in animals (Yin et al, 2006). Numerical ("in silico") methods can provide an alternative way to obtain relevant and detailed information for valve design optimization, since they are capable of solving the valve dynamics with a high degree of resolution in time and space (Kelly et al, 1999;Grigioni et al, 2004;Yoganathan et al, 2005;Dasi et al, 2009;Sotiropoulous & Borazjani, 2009).…”

Section: Introductionmentioning

confidence: 99%