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Morphologic relationship between the coronary arteries during fetal development / Relación morfológica entre las arterias coronarias durante el desarrollo fetal
Singh, S; Ajayi, N; Lazarus, L; Satyapal, K. S.
  • Singh, S; University of Kwazulu-Natal. College of Health Sciences. School of Laboratory Medicine and Medical Sciences. ZA
  • Ajayi, N; University of Kwazulu-Natal. College of Health Sciences. School of Laboratory Medicine and Medical Sciences. ZA
  • Lazarus, L; University of Kwazulu-Natal. College of Health Sciences. School of Laboratory Medicine and Medical Sciences. ZA
  • Satyapal, K. S; University of Kwazulu-Natal. College of Health Sciences. School of Laboratory Medicine and Medical Sciences. ZA
Int. j. morphol ; 35(4): 1197-1202, Dec. 2017. tab, graf
Article in English | LILACS | ID: biblio-893114
ABSTRACT

SUMMARY:

A detailed understanding of the coronary arteries is of paramount importance in the management of coronary arterial diseases. The arterial supply to the heart originates from right (RCA) and left (LCA) coronary arteries which form an oblique inverted crown within the atrioventricular groove. This study aimed to document the embryologic relationship between the RCA and the LCA including their lengths, diameters, branching patterns and arterial dominance in fetuses. Forty-one human fetal heart specimens with an age range of 13.13 to 26.95 weeks were dissected at the Department of Clinical Anatomy, University of Kwazulu-Natal, Durban, South Africa. The RCA arose from the right aortic sinus and was dominant in all the specimens. The LCA was classified into types according to their branching pattern. The bifurcation, trifurcation and quadrifurcation of the LCA occurred in 68.3 %, 29.3 % and 2.4 % of hearts, respectively. The mean lengths of the RCA and LCA were 0.98±0.54 mm and 1.83±0.77 mm, respectively. The mean external diameters of the RCA and LCA were 0.38±0.12 mm and 0.49±0.17 mm, respectively. There was a significant correlation between the RCA and LCA length and the fetal age which is indicative of significant changes in the coronary vasculature with fetal growth.
RESUMEN
RESUMEN Una comprensión detallada de las arterias coronarias es de suma importancia en el manejo de las enfermedades en estas arterias. El suministro arterial al corazón se origina de las arterias coronarias derecha (ACD) e izquierda (ACI) que forman una "corona oblicua invertida" dentro del surco atrioventricular. Este estudio tuvo por objetivo documentar la relación embriológica entre la ACD y la ACI, incluyendo sus longitudes, diámetros, patrones de ramificación y dominio arterial en fetos. Se disecaron 41 corazones de fetos humanos con un rango de edad de 13,13 a 26,95 semanas, en el Departamento de Anatomía Clínica, Universidad de Kwazulu-Natal, Durban, Sudáfrica. La ACD surgió del seno aórtico derecho y fue dominante en todos los especímenes. La ACI se clasificó en distintos tipos según su patrón de ramificación. La bifurcación, trifurcación y cuadrifurcación de la ACI ocurrieron en 68,3 %, 29,3 % y 2,4 % de los corazones, respectivamente. Las longitudes medias de la ACD y ACI fueron 0,98 ± 0,54 mm y 1,83 ± 0,77 mm, respectivamente. Los diámetros externos medios de la ACD y ACI fueron 0,38 ± 0,12 mm y 0,49 ± 0,17 mm, respectivamente. Hubo una correlación significativa entre la longitud de la ACD y la ACI y la edad fetal, que es indicativa de cambios significativos en la vasculatura coronaria con crecimiento fetal.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Coronary Vessels / Fetus Limits: Humans Country/Region as subject: Africa Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2017 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of Kwazulu-Natal/ZA

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Full text: Available Index: LILACS (Americas) Main subject: Coronary Vessels / Fetus Limits: Humans Country/Region as subject: Africa Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2017 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of Kwazulu-Natal/ZA