The efficacy and safety of coronary stent implantation depend on the mechanical features of these devices when deployed in atheromatous lesions of various morphologies. We evaluated the trackability, flexibility, and conformability of 17 coronary stents using specific mechanical bench tests. The quantifications used a dynamometer for assessment of trackability (maximal strength) and flexibility (stiffness) and a 3D optical gauging machine for assessment of conformability (distance between stent and arterial wall in a curvature). The maximal strength (measuring the trackability) ranged respectively from 0.24 +/- 0.06 and 0.38 +/- 0.03 N (Seaquest) to 1.31 +/- 0.42 and 1.34 +/- 0.35 N (Carbostent), concerning respectively curvatures of 90 degrees (P < 0.0001) and 135 degrees (P < 0.0001). The stiffness (measuring the flexibility) ranged from 0.53 +/- 0.16 (Seaquest) to 1.28 +/- 0.10 N/mm (NIR Royal; P < 0.0001). The mean distance between stent and external curvature (external conformability) ranged from 0.15 +/- 0.06 mm (S7) to 0.57 +/- 0.4 mm (NIR Royal; P < 0.0001). The mean distance between stent and internal curve (internal conformability) ranged from 0.26 +/- 0.13 (S7) to 0.44 +/- 0.12 mm (S670; P < 0.0001). These results may influence the choice of a particular stent adapted to a specific coronary anatomy.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1002/ccd.10583 | DOI Listing |
J Neurosurg Case Lessons
January 2025
Department of Neurosurgery, Kurashiki Central Hospital, Kurashiki, Japan.
Background: Eagle syndrome is characterized by an elongated styloid process causing mechanical stress on the internal carotid artery (ICA). The authors present the case of a patient who had cervical ICA dissection with a nonelongated styloid process.
Observations: A 43-year-old man presented with left hemiparesis and hemispatial neglect.
Phys Eng Sci Med
January 2025
Faculty of Engineering, Department of Biomedical Engineering, Universiti Malaya, Kuala Lumpur, Malaysia.
Rev Cardiovasc Med
December 2024
Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia.
Background: Elective unprotected left main (ULM) percutaneous coronary intervention (PCI) has long-term mortality rates comparable to surgical revascularization, thanks to advances in drug-eluting stent (DES) design, improved PCI techniques, and frequent use of intravascular imaging. However, urgent PCI of ULM culprit lesions remains associated with high in-hospital mortality and unfavourable long-term outcomes, including DES restenosis and stent thrombosis (ST). This analysis aimed to examine the long-term outcomes and healing of DES implanted in ULM during primary PCI using high-resolution optical coherence tomography (OCT) imaging.
View Article and Find Full Text PDFAnticancer Res
January 2025
Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan.
Background/aim: To investigate risk factors of late acute remnant pancreatitis after pancreatoduodenectomy (PD), we propose the use of a suturing pitch calculated based on the diameter of the main pancreatic duct and the number of sutures used in the pancreatic duct-to-mucosa anastomosis. This study aimed to determine whether the suturing pitch can predict late acute pancreatitis following PD.
Patients And Methods: This study included 142 patients who underwent elective PD.
Front Cardiovasc Med
December 2024
Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Background: Double aortic arch (DAA) with type B aortic dissection in adults is a rare aortic vascular disease. The abnormal anatomical structure of the aortic arch in such patients presents significant challenges in the selection of surgical approaches, and there is a notable lack of exploration into endovascular repair approaches that simultaneously preserve asymptomatic vascular rings.
Case Description: A 43-year-old female patient was admitted due to recurrent chest and back pain lasting for over a month.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!