Background: The left coronary artery (LCA) in the bovines is more developed than the right.
Aim: The objective of the study is to describe the bovine coronary system from a morphological point of view, including the morphometry and its distribution.
Methods: Arciform suture with 2.0 silk was applied around the sinus orifice and coronary ostium and a number 14 catheter was installed, to perfuse semi-synthetic polyester resin, consisting of a mixture of 85% GP40L palatal with 15% styrene with red color mineral.
Results: The average weight of 28 bovine hearts used in our study was 1.534.1 kg. The right coronary artery had a proximal caliber of 5 +/- 0.9 mm. The LCA caliber and length were 9.4 +/- 1.2 and 18.3 +/- 4.8 mm, respectively. This artery was divided into two branches in 85.7% of the cases and trifurcated in 14.3%. The paraconal interventricular branch (PIB) ended more frequently in the apex (46.4%), and its proximal caliber was 6.4 +/- 1.4 mm. The left circumflex branch ended in 82.1% in the subsinusal interventricular sulcus, and its proximal caliber was 5.9 +/- 1.2 mm. The proximal calibers of the PIB and the left circumflex branch did not present statistically significant differences ( = 0.137). The sinoatrial branch presented a dual origin (right and LCA) in 46.4% of the cases and a single origin from the LCA in 53.6% of the samples. In the evaluated hearts, left coronary dominance was observed in most cases (96.4%). Their presence of anastomosis between the branches of the coronary arteries was observed in 57.1% of cases.
Conclusion: The presence of a myocardial bridge was found in six hearts (21.4%). In bovines, a high percentage of anastomosis was found, a protective factor in obstruction of the coronary arterial branches.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495096 | PMC |
| http://dx.doi.org/10.5455/OVJ.2023.v13.i8.1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Three-dimensional aortic arch geometry and blood flow in neonates after surgical repair for aortic coarctation.
Front Cardiovasc Med
January 2025
Pediatric Cardiology, Pediatric Heart Center, Skåne University Hospital, Lund, Sweden.
Background: Recurrent coarctation of the aorta (re-CoA) is a well-known although not fully understood complication after surgical repair, typically occurring in 10%-20% of cases within months after discharge.
Objectives: To (1) characterize geometry of the aortic arch and blood flow from pre-discharge magnetic resonance imaging (MRI) in neonates after CoA repair; and (2) compare these measures between patients that developed re-CoA within 12 months after repair and patients who did not.
Methods: Neonates needing CoA repair, without associated major congenital heart defects, were included.
Vaginal Orthosis After Native Tissue Reconstructive Surgery: Design and Phase 0.
Urogynecology (Phila)
December 2024
From the Division of Urogynecology and Reconstructive Pelvic Surgery, University of Alabama at Birmingham, Birmingham, AL.
Importance: Pelvic organ prolapse recurrence following native tissue repair occurs with composite failure rates of 9-19% within 12 months, predominantly involving apical/anterior compartments. Objective The objective of this study was to develop a novel vaginal orthosis (NVO) device prototype through an iterative design process based on investigator and user feedback.
Study Design: The NVO was designed based on pelvic floor biomechanical principles to mitigate unopposed intra-abdominal pressure of the anterior vagina by absorbing and redirecting intra-abdominal forces to the levator ani and tailored to accommodate postoperative vaginal caliber and axis.
Caliber of sensory axons in vivo varies spatially and temporally and is influenced by the cellular microenvironment.
bioRxiv
December 2024
Department of Cell, Molecular, and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.
Cell shape is crucial to cell function, particularly in neurons. The cross-sectional diameter, also known as caliber, of axons and dendrites is an important parameter of neuron shape, best appreciated for its influence on the speed of action potential propagation. Most studies of axon caliber focus on cell-wide regulation and assume that caliber is static.
View Article and Find Full Text PDFCoronary CT angiography: First comparison of model-based and hybrid iterative reconstruction with the reference standard invasive catheter angiography for CAD-RADS reporting.
Eur J Radiol Open
December 2024
Institute of Diagnostic and Interventional Radiology, Klinikum Bayreuth, Medical Campus Oberfranken, Friedrich Alexander University Erlangen, Bayreuth, Germany.
Background: The purpose of this study was to compare CCTA images generated using HIR and IMR algorithm with the reference standard ICA, and to determine to what extend further improvements of IMR over HIR can be expected.
Methods: This retrospective study included 60 patients with low to intermediate CAD risk, who underwent coronary CTA (with HIR and IMR) and ICA. ICA was used as reference standard.
A neuromuscular clinician's guide to magnetic resonance neurography.
Muscle Nerve
October 2024
Musculoskeletal Imaging Division, The Russell H. Morgan Department of Radiology & Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Magnetic resonance neurography (MRN) is increasingly used in clinical practice for the evaluation of patients with a wide spectrum of peripheral nerve disorders. This review article discusses the technical aspects of MRN highlighting the core sequences performed for clinical care. A robust, high-resolution, heavily T2-weighted fluid-sensitive sequence performed on a 3.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!