2,248 results match your criteria caliber arteries


Type 2 persistent primitive olfactory artery associated with bilateral ophthalmic arteries arising from the middle meningeal arteries diagnosed by magnetic resonance angiography.

Surg Radiol Anat 2021 May 13. Epub 2021 May 13.

Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Hidaka, Japan.

Persistent primitive olfactory artery (PPOA) is a relatively rare variation of the proximal anterior cerebral artery (ACA). Traditionally, there are two types: Type 1 is a common type, which generally follows an anteroinferior course and which takes a hairpin turn before continuing to the A2 segment of the ACA. Type 2 is an extremely rare variation that continues to the anterior ethmoidal artery without a hairpin turn. Read More

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Kawasaki disease recurrence in the COVID-19 era: a systematic review of the literature.

Ital J Pediatr 2021 Apr 19;47(1):95. Epub 2021 Apr 19.

Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Infectious Diseases Unit, University of Palermo, Palermo, Italy.

Kawasaki disease (KD) is a vasculitis of unknown origin of small and medium caliber blood vessels, especially involving coronary arteries and is the leading cause of acquired heart disease in childhood in developed countries. Although rarely, it can recur: most recurrences occur within 2 years of the initial episode. No data are available on incidence of recurrent KD in Europe and multiple recurrences are rarely seen. Read More

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Optimized Inner-Volume 3D TSE for High-Resolution Vessel Wall Imaging of Intracranial Perforating Arteries at 7T.

Front Neurosci 2021 25;15:620172. Epub 2021 Feb 25.

State Key Laboratory of Brain and Cognitive Science, Beijing MR Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

The impairment of microvessels can lead to neurologic diseases such as stroke and vascular dementia. The imaging of lumen and vessel wall of perforating arteries requires an extremely high resolution due to their small caliber size. Current imaging techniques have the difficulty in observing the wall of perforating arteries. Read More

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February 2021

Tmem100-BAC-EGFP mice to selectively mark and purify embryonic endothelial cells of large caliber arteries in mid-gestational vascular formation.

Genesis 2021 Apr 2;59(4):e23416. Epub 2021 Mar 2.

Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan.

Embryonic vascular development is achieved through the complex arrays of differentiation, proliferation, migration and mutual interaction of different cell types, and visualization as well as purification of unique cell populations are fundamental in studying its detailed mechanisms using in vivo experimental models. We previously demonstrated that Tmem100 was a novel endothelial gene encoding a small transmembrane protein, and that Tmem100 null mice showed embryonic lethality due to severe impairment of vascular formation. In the present study, we generated an EGFP reporter mouse line using a 216 kb genomic region containing mouse Tmem100 gene. Read More

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A novel polymeric fibrous microstructured biodegradable small-caliber tubular scaffold for cardiovascular tissue engineering.

J Mater Sci Mater Med 2021 Mar 1;32(2):21. Epub 2021 Mar 1.

Department of Mechanical Engineering and Aeronautics, Laboratory of Biomechanics and Biomedical Engineering, University of Patras, Patras, GR, Greece.

Increasing morbidity of cardiovascular diseases in modern society has made it crucial to develop artificial small-caliber cardiovascular grafts for surgical intervention of diseased natural arteries, as alternatives to the gold standard autologous implants. Synthetic small-caliber grafts are still not in use due to increased risk of restenosis, lack of lumen re-endothelialization and mechanical mismatch, leading sometimes either to graft failure or to unsuccessful remodeling and pathology of the distal parts of the anastomosed healthy vascular tissues. In this work, we aimed to synthesize small-caliber polymeric (polycaprolactone) tissue-engineered vascular scaffolds that mimic the structure and biomechanics of natural vessels. Read More

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Optical coherence tomography of arteriolar diameter and capillary perfusion during spreading depolarizations.

J Cereb Blood Flow Metab 2021 Feb 16:271678X21994013. Epub 2021 Feb 16.

Neurovascular Research Unit, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, USA.

Spreading depolarization (SD) is associated with profound oligemia and reduced oxygen availability in the mouse cortex during the depolarization phase. Coincident pial arteriolar constriction has been implicated as the primary mechanism for the oligemia. However, where in the vascular bed the hemodynamic response starts has been unclear. Read More

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February 2021

Combined Spinal-Epidural Anaesthesia for Caesarean Delivery in Takayasu's Arteritis: A Viable Alternative.

Cureus 2021 Jan 3;13(1):e12459. Epub 2021 Jan 3.

Anaesthesiology, Tata Main Hospital, Jamshedpur, IND.

Takayasu's arteritis (TA), also known as "pulseless disease", is a nonspecific inflammatory arteritis of large and medium caliber arteries of unknown aetiology with a predilection for young women of childbearing age. Although the evolution of the disease is not affected during pregnancy, it can result in uncontrolled hypertension, multiple organ dysfunction, and stenosis that hinder regional blood flow. Associated pregnancy, therefore, poses an increased risk to the mother and foetus due to the many cardiovascular complications that can occur in the course of the disease, making anaesthesia for caesarean delivery especially challenging to the anaesthesiologist. Read More

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January 2021

The impact of continuous positive airway pressure treatment on retinal vascular changes in obstructive sleep apnea.

J Clin Sleep Med 2021 May;17(5):983-991

Department of Ophthalmology and Vision Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, New South Wales, Australia.

Study Objectives: Obstructive sleep apnea (OSA) was recently shown to be associated with quantifiable retinal vascular changes, which correlate with disease severity. This follow-up study examines the response of retinal vascular changes in patients with OSA receiving continuous positive airway pressure (CPAP) treatment.

Methods: This prospective cohort study recruited adult patients undergoing diagnostic polysomnography at a tertiary sleep clinic in Sydney, Australia, stratified into 4 groups by the apnea-hypopnea index; control patients and patients with mild, moderate, and severe OSA. Read More

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Treatment of Hepatic Artery Stenosis in Liver Transplant Patients Using Drug-Eluting versus Bare-Metal Stents.

J Clin Med 2021 Jan 20;10(3). Epub 2021 Jan 20.

Division of Vascular & Interventional Radiology, Mayo Clinic Arizona, Phoenix, AZ 85054, USA.

Hepatic artery stenosis after liver transplant is often treated with endovascular stent placement. Our institution has adopted use of drug-eluting stents, particularly in small-caliber arteries. We aimed to compare patency rates of drug-eluting stents vs. Read More

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January 2021

Importance of endothelial Hey1 expression for thoracic great vessel development and its distal enhancer for Notch-dependent endothelial transcription.

J Biol Chem 2020 12;295(51):17632-17645

Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan. Electronic address:

Thoracic great vessels such as the aorta and subclavian arteries are formed through dynamic remodeling of embryonic pharyngeal arch arteries (PAAs). Previous work has shown that loss of a basic helix-loop-helix transcription factor Hey1 in mice causes abnormal fourth PAA development and lethal great vessel anomalies resembling congenital malformations in humans. However, how Hey1 mediates vascular formation remains unclear. Read More

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December 2020

Surgical treatment for anomalous origin of the right coronary artery from the pulmonary artery: a case report with five-year follow-up.

J Cardiothorac Surg 2021 Jan 6;16(1). Epub 2021 Jan 6.

Department of Cardiovascular Surgery, the First Affiliated Hospital, College of Medicine, Zhejiang University, Postal Address: 79#, Qingchun Road, Hangzhou, 310000, Zhejiang, China.

Background: Anomalous origin of the right coronary artery from the pulmonary artery (ARCAPA) is a rare congenital heart disease affecting about 0.002% of the population. Knowledge of ARCAPA is almost collected from case reports. Read More

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January 2021

In Vitro Evaluation of Flow Distribution in All-Region Perfusion during the Norwood Operation.

J Extra Corpor Technol 2020 Dec;52(4):261-265

Department of Perfusion Services, Duke University Hospital, Durham, North Carolina; and Duke University School of Medicine, Durham, North Carolina.

Continuous all-region perfusion has the potential to reduce total body ischemia during the Norwood procedure. This technique involves placing cannulas in the innominate artery, descending aorta, and native aortic root, thus providing continuous flow to the whole body at mild hypothermia (32-34°C) during the entire operation. However, the cannulation strategy in this approach must be optimized to achieve adequate flow rates to all vascular beds. Read More

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December 2020

Distal mechanical thrombectomy for very eloquent M3 branches with a new, adjustable diameter clot retriever: A technical note.

J Neuroradiol 2020 Dec 17. Epub 2020 Dec 17.

Department of Interventional Neuroradiology, Iatriko Kentro Amaroussiou Hospital, Athens Greece.

Distal thrombectomy may be considered in selected patients harboring acute occlusion of distal arterial branches, supplying very eloquent brain areas. In these cases navigation and deployment in tortuous, fragile and very small-caliber arteries is usually involved, potentially increasing the risk of per-procedural vessel wall perforation. We report a case of distal recanalization in a right-handed, fourty-year-old woman with left M3 occlusion, with the use of a novel device with manually adapted, gradual expansion, navigated through a 0. Read More

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December 2020

[Fibromuscular dysplasia and its neurological manifestations].

Zh Nevrol Psikhiatr Im S S Korsakova 2020 ;120(11):116-123

Research Center of Neurology, Moscow, Russia.

The authors present the current data on the classification, epidemiology, etiology, neurological manifestations, prognosis, diagnosis, and treatment of patients with fibromuscular dysplasia (FMD). The review is based on the selection of publications by searching PubMed for keywords from the first sources until March 2019. FMD is a segmental non-atherosclerotic and non-inflammatory disease of large- and medium-caliber arteries leading to their stenosis. Read More

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December 2020

A step-by-step guide to trans-axillary transcatheter aortic valve replacement.

Ann Cardiothorac Surg 2020 Nov;9(6):510-521

Division of Cardiac Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.

The application of transcatheter aortic valve replacement (TAVR) has expanded rapidly over the last decade as a less invasive option for the treatment of severe aortic stenosis. In order to perform successful TAVR, vascular access must be obtained with a large-bore catheter to deliver the transcatheter valve to the aortic annulus. Several techniques have been developed for this purpose including transfemoral (TF), trans-aortic, trans-apical, trans-caval, trans-carotid, and trans-axillary (TAx) with varying degrees of success. Read More

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November 2020

"Leave Nothing Behind": Strategy of Choice for Small Coronaries?

Authors:
Dean J Kereiakes

JACC Cardiovasc Interv 2020 12 25;13(24):2850-2852. Epub 2020 Nov 25.

Christ Hospital and Lindner Research Center, Cincinnati, Ohio, USA. Electronic address:

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December 2020

[Massive digestive hemorrhage from secondary fistulas of great vessels to the digestive tract].

Rev Gastroenterol Peru 2020 Jul-Sep;40(3):267-269

Unidad de Hemorragia Digestiva, Hospital Nacional Edgardo Rebagliati Martins. Lima, Perú; Clínica Internacional San Borja. Lima Perú.

The formation of a fistula between large caliber arteries and the digestive tract is an uncommon complication of reconstructive surgery of the large vessels secondary to the use of vascular prostheses, which manifest themselves with massive hemorrhages with high mortality. We report two cases of aorto-enteric fistula and carotid-esophageal fistula that share common characteristics such as the clinical manifestation of massive and fatal gastrointestinal bleeding in patients with a history of vascular prosthesis placement. Read More

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November 2020

Proximal and distal radial artery approaches for endovascular percutaneous procedures: anatomical suitability by ultrasound evaluation.

Radiol Med 2021 Apr 5;126(4):630-635. Epub 2020 Nov 5.

Department of Medical Surgical Sciences and Advanced Technologies "G. F. Ingrassia" - Radiology I Unit, University Hospital "Policlinico-Vittorio Emanuele", Via Santa Sofia 78, 95123, Catania, Italy.

Purpose: To describe the variability of the radial artery (RA) diameters at 2 levels, proximal (pRA), within 2 cm to the styloid process, and distal (dRA) at the snuff box, both eligible accesses for percutaneous approach, and to correlate these diameters with population features.

Methods: A total of 700 patients (377 females, 323 males) have been enrolled from July 2018 to March 2019. The diameters of left and right RA were measured using ultrasound (US) examination. Read More

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Activity of Gas Transmitters in Vessels of the Anterior Abdominal Wall after Implantation of a Polypropylene Mesh.

Bull Exp Biol Med 2020 Oct 24;169(6):811-814. Epub 2020 Oct 24.

Pacific State Medical University, Ministry of Health of the Russian Federation, Vladivostok, Russia.

The distribution of NO and HS in the arterial vessels of the anterior abdominal wall after implantation of a polypropylene mesh was studied by immunohistochemical methods at different stages of healing of the surgical wound in mature male Wistar rats. The presence of enzymes of NO and HS synthesis in the wall of arterial vessels of the soft tissues of the anterior abdominal wall has been established. It has been shown that endothelial NO synthase is localized exclusively in the endothelium of both large and small vessels. Read More

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October 2020

Anomalous origin of left main coronary artery from right coronary artery in a patient presenting with inferior wall myocardial infarction: a case report and literature review.

Eur Heart J Case Rep 2019 Dec 4;3(4):1-6. Epub 2019 Oct 4.

Chicago Medical School, Rosalind Franklin University, Northwestern McHenry Hospital, 4309 W. Medical Center Drive, McHenry, IL 60050, USA.

Background: Anomalous origin of the coronary arteries is seen in less than 1% of the general population. Single coronary artery (SCA) is a congenital anatomic abnormality identified by a single coronary ostium giving rise to one coronary artery. We present an extremely rare variant of the left main coronary artery (LMCA) branching off from the right coronary artery (RCA) and following a prepulmonic course. Read More

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December 2019

The GEF Trio controls endothelial cell size and arterial remodeling downstream of Vegf signaling in both zebrafish and cell models.

Nat Commun 2020 10 21;11(1):5319. Epub 2020 Oct 21.

Department of Cell and Developmental Biology, Institute of Zoology (ZOO), Karlsruhe Institute of Technology (KIT), Fritz Haber Weg 4, 76131, Karlsruhe, Germany.

Arterial networks enlarge in response to increase in tissue metabolism to facilitate flow and nutrient delivery. Typically, the transition of a growing artery with a small diameter into a large caliber artery with a sizeable diameter occurs upon the blood flow driven change in number and shape of endothelial cells lining the arterial lumen. Here, using zebrafish embryos and endothelial cell models, we describe an alternative, flow independent model, involving enlargement of arterial endothelial cells, which results in the formation of large diameter arteries. Read More

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October 2020

Caliber of Intracranial Arteries as a Marker for Cerebral Small Vessel Disease.

Front Neurol 2020 24;11:558858. Epub 2020 Sep 24.

Department of Neurology, Jinling Hospital, Medical College of Nanjing University, Nanjing, China.

The dilation of intracranial large arteries caliber, may transfer more hemodynamic burden to the downstream brain capillaries, which, in the long run, results in cerebral small vessel disease (CSVD). This study aimed to investigate the relationship between intracranial artery calibers and small vessel disease. Patients with first-ever ischemic stroke of lacunar infarction subtype were enrolled via Nanjing Stroke Registry Program. Read More

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September 2020

Motility and function of smooth muscle cells in a silk small-caliber tubular scaffold after replacement of rabbit common carotid artery.

Mater Sci Eng C Mater Biol Appl 2020 Sep 30;114:110977. Epub 2020 Apr 30.

National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren-ai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, China. Electronic address:

Cell infiltration and proliferation are prerequisites for tissue regeneration and repair. The aim of the present study was to evaluate the motility and function of vascular smooth muscle cells (SMCs) in a silk-based small-caliber artificial blood vessel (SFTS) following implantation to replace the common carotid artery in rabbits. Hematoxylin and eosin (HE) staining showed a number of SMCs clearly distributed in the scaffold at 1 month, which gradually increased up to 80-90% of autologous blood vessels at 3 months and was 100% at 12 months. Read More

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September 2020

Augmentation of Pulmonary Arterial Growth in Single Ventricle Patients by Interim Selective Shunts.

Semin Thorac Cardiovasc Surg 2020 Sep 23. Epub 2020 Sep 23.

Department of Cardiology, The Royal Children's Hospital Melbourne, Victoria, Australia; Heart Research Group, Murdoch Childrens Research Institute, Victoria, Australia; Department of Pediatrics, University of Melbourne, Victoria, Australia. Electronic address:

Stenosis or diffuse hypoplasia of central pulmonary arteries (PA) is common in patients with single ventricle physiology, often requiring surgical patching. Such repairs are prone to failure, particularly with low pressure venous flow (bidirectional cavopulmonary connection or Fontan). We describe our experience of disconnection of central PA and selective systemic-PA shunt to the hypoplastic vessel. Read More

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September 2020

Transcatheter aortic valve implantation facilitated by right common carotid cut-down and innominate artery angioplasty with simultaneous right coronary artery vein graft percutaneous coronary intervention in a patient with mid aortic syndrome: a case report.

Eur Heart J Case Rep 2020 Aug 26;4(4):1-5. Epub 2020 May 26.

Department of Cardiology, University Hospital South Manchester, Manchester, UK.

Background: Transcatheter aortic valve implantation (TAVI) is most commonly performed via the femoral approach. Small caliber ilio-femoral arteries, severe calcification and tortuosity are often prohibitive reasons for TAVI via the femoral approach. Mid-aortic syndrome is a rare condition describing congenital or acquired coarctation of the abdominal aorta. Read More

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Percutaneous trans-ulnar versus trans-radial arterial approach for coronary angiography and angioplasty, a preliminary experience at an Egyptian cardiology center.

Egypt Heart J 2020 Sep 11;72(1):60. Epub 2020 Sep 11.

Cardiology Department, Sohag Heart and GIT Specialized Center, Sohag, Egypt.

Background: Trans-ulnar approach was proposed primarily for elective procedures in patients not suitable for trans-radial approach that was introduced two decades ago. The trans-ulnar approach is as safe and effective as the trans-radial approach for coronary angiography and intervention.

Aim: This study's aim was to assess the feasibility and safety of the trans-ulnar approach in coronary procedures as a preliminary experience for operators experienced in trans-radial approach with no/minimal trans-ulnar approach experience at an Egyptian center. Read More

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September 2020

Subclavian Artery to Internal Carotid Artery Interpositional Bypass for Carotid Artery Occlusion: Technical Case Report.

Oper Neurosurg (Hagerstown) 2020 Dec;20(1):E66-E71

Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona.

Background And Importance: Conventional microsurgical treatment for symptomatic internal carotid artery (ICA) occlusion is revascularization with superficial temporal artery (STA) to middle cerebral artery bypass. However, in rare cases where the common carotid artery, external carotid artery (ECA), or both are also occluded, other microsurgical treatment options must be considered.

Clinical Presentation: We present the case of a 52-yr-old woman with common carotid artery occlusion and weak ICA flow from collateral connections between the vertebral artery, occipital artery, and ECA. Read More

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December 2020

An infection-oriented approach for thoracic endovascular aortic repair in a SARS-CoV-2 positive patient. A case report.

Ann Ital Chir 2020 ;91:273-276

Case Report: A 64-year-old woman presented to our emergency department during the outbreak of the covid-19 emergency in Italy with syncope, anosmia, mild dyspnoea and atypical chest and dorsal pain. A chest CT scan showed an acute type B aortic dissection (ATBAD) and bilateral lung involvement with ground-glass opacity, compatible with interstitial pneumonia. Nasopharyngeal swabs resulted positive for SARS-CoV-2. Read More

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September 2020

Inconsistency in Graft Outcome of Bilayered Bioresorbable Supramolecular Arterial Scaffolds in Rats.

Tissue Eng Part A 2020 Oct 5. Epub 2020 Oct 5.

Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.

There is a continuous search for the ideal bioresorbable material to develop scaffolds for vascular tissue engineering. As these scaffolds are exposed to the harsh hemodynamic environment during the entire transformation process from scaffold to neotissue, it is of crucial importance to maintain mechanical integrity and stability at all times. Bilayered scaffolds made of supramolecular polycarbonate-ester-bisurea were manufactured using dual electrospinning. Read More

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October 2020

Dieulafoy lesion in the jejunum: a rare cause of massive gastrointestinal bleeding.

J Community Hosp Intern Med Perspect 2020 May 21;10(2):138-139. Epub 2020 May 21.

Department of Gastroenterology, Temple University, Philadelphia, PA, USA.

Dieulafoy lesions are tortuous vascular malformations characterized by thick walled submucosal arteries/large caliber arterioles protruding through a small mucosal defect surrounded by normal mucosa. They can occur in the jejunum/ileum and can cause massive, life-threatening GI bleeding. We present an 80-year-old female with three weeks of black tarry stools, progressive dyspnea on exertion and generalized body weakness with no significant findings on Esophagogastroduodenoscopy (EGD). Read More

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