A supernumerary cusp in the human pulmonary valve

Shimada, Kazuyuki; Yokoi, Atsuyuki; Kitagawa, T.; Asuwa, Noriko; Ishii, T.

doi:10.1007/bf02094131

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…46 Similarly, in humans, cases of quadricuspid pulmonary valves, although less frequent, have been reported in the medical literature. 47,48 When analysing 45 canine hearts, Alves et al 29 RAV. On the other hand, Wafae et al 32 detected a maximum of four accessory leaflets for the human LAV while we identified as many as 6 extra leaflets for the equine LAV.…”

Section: Discussionmentioning

confidence: 99%

Morphological variability of the atrioventricular valve cusps in the equine heart

Silva

Tagliavia

Galiazzo

et al. 2021

Equine Veterinary Journal

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Background:The morphometric studies of the atrioventricular valves are still limited in the horse.Objectives: To investigate the anatomy of the atrioventricular valves in the horse, focusing on the morphometric features of the valvular leaflets and the tendinous cords.We hypothesised that accessory leaflets occur commonly and exist as independent structures in the atrioventricular valves of the horse. Study design: Descriptive anatomical study.Methods: Twenty normal hearts from slaughtered half-bred horses were used. The cardiac weight and circumference were recorded. The atrioventricular valves were exposed by excision of the atria, and the tricuspid and mitral annular diameters and circumferences were measured; the number of leaflets and tendinous cords for each atrioventricular ostium were then counted. The atrioventricular valves were isolated and the width, height and thickness of each leaflet were measured. Results:In addition to the principal leaflets, accessory leaflets were identified in 39 of 40 cardiac valves, 2 to 6 accessory leaflets for the mitral valve and 1 to 4 for the tricuspid valve. All the accessory leaflets were separated from the adjacent leaflets at their insertion. They were narrower and thinner than the principal leaflets, and were attached to a single papillary muscle; 95% of the accessory leaflets had two tendinous cords shared with the adjacent leaflets while a minority (34%) had their own specific tendinous cord.Main limitations: Lack of signalment data from the study population.Conclusions: Supernumerary leaflets occurred commonly in the atrioventricular valves of the horse and appeared as independent structures. The clinical relevance of increased numbers of commissures that result from accessory leaflets and their relationship with valvular regurgitation are currently unknown.

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Section: Discussionmentioning

confidence: 99%

Morphological variability of the atrioventricular valve cusps in the equine heart

Silva

Tagliavia

Galiazzo

et al. 2021

Equine Veterinary Journal

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“…A quadricuspid PV is a rare anatomic feature with an incidence of 1 in 1100 individuals. 2 To our knowledge, the use of a quadricuspid autograft in the Ross procedure has not been reported before. 3…”

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confidence: 95%

Ross procedure with a quadricuspid pulmonary autograft

Sommer

Bara

Kofidis

et al. 2005

The Journal of Thoracic and Cardiovascular Surgery

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“…That might be even more relevant with congenital anomalies of the pulmonary valve. Both bicuspid [2] and quadricuspid [3] anatomy may occur in the pulmonary valve, and these scenarios have been considered as contraindications to a pulmonary autograft [4]. A quadricuspid pulmonary valve has been used in a Ross operation previously [5] with only short follow-up.…”

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Repair of a Quadricuspid Autograft

Karliova

Hagendorff

Shalabi

et al. 2018

The Annals of Thoracic Surgery

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Aortic valve replacement using a pulmonary autograft is an accepted option in children and young patients. The use of a pulmonary valve with congenital anomaly as autograft is controversial. We describe a case in which a quadricuspid pulmonary valve was used as an autograft in childhood. The patient presented with severe regurgitation 13 years later. Repair was performed with stabilization of the root and cusp prolapse correction, leading to normalized valve function. Despite concerns over the long-term durability of an anomalous pulmonary valve as autograft, good mid to long-term results can be achieved.

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A supernumerary cusp in the human pulmonary valve

Cited by 5 publications

References 6 publications

Morphological variability of the atrioventricular valve cusps in the equine heart

Morphological variability of the atrioventricular valve cusps in the equine heart

Ross procedure with a quadricuspid pulmonary autograft

Repair of a Quadricuspid Autograft

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