Glaucoma is a common cause of blindness worldwide. This disease is characterised by increased intraocular pressure (IOP) and the concomitant disruption of ocular haemodynamic. Several studies have demonstrated that trabeculectomy is associated with changes in extraocular blood flow. In this study, we reviewed the available evidence on the use of colour Doppler imaging to evaluate and manage patients with open-angle glaucoma. We present the detailed anatomy of ocular blood flow to provide a background for the research findings. We also discuss the physiological foundations of ocular blood flow and detailed flow characteristics of specific extraocular vessels. Finally, we reviewed published studies that analysed the effects of glaucoma surgery on the blood flow parameters of the eye.
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http://dx.doi.org/10.2147/OPTH.S441805 | DOI Listing |
J Cereb Blood Flow Metab
January 2025
Neuronal Mass Dynamics Lab, Department of Biomedical Engineering, Florida International, University, Miami, FL, USA.
Vasoactive signaling from astrocytes is an important contributor to the neurovascular coupling (NVC), which aims at providing energy to neurons during brain activation by increasing blood perfusion in the surrounding vasculature. Pharmacological manipulations have been previously combined with experimental techniques (e.g.
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March 2025
University of Maryland School of Medicine, Department of Diagnostic Radiology and Nuclear Medicine, Division of Vascular and Interventional Radiology, Baltimore, MD, USA.
Splenic steal syndrome (SSS) post liver transplant is a potential cause of graft dysfunction in the setting of peripheral hepatic arterial bed resistance and redirection of blood flow to a dominant splenic artery resulting in reduction of hepatic arterial inflow. We report utilization of balloon occlusion of the proximal splenic artery as an objective measure to confirm the diagnosis of SSS in a patient with orthotopic liver transplant followed by successful treatment with proximal splenic artery embolization using Gelfoam and Amplatzer vascular plug. Written informed consent for the publication of this case report was obtained from the patient.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2023
Department of Pediatric Cardiovascular Surgery, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
To improve the suboptimal outcomes of the cutback technique for cardiac total anomalous pulmonary venous return, we devised a novel modification for this conventional method that consists of an L-shaped incision of the roof of the coronary sinus into the pulmonary venous confluence, followed by turning over the flap and anchoring it to the endocardium of the left atrium. Our modification provides a large, oval communication between the pulmonary vein confluence and the left atrium and resultant smooth drainage of the pulmonary venous blood, which may prevent turbulent blood flow and the subsequent development of intimal hyperplasia.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2023
Department of Pediatric Cardiac Surgery, Stanford University, Palo Alto, California.
The Norwood procedure with the right ventricle-to-pulmonary artery (RV-PA) conduit has been the standard procedure for hypoplastic left heart syndrome. However, postoperative management can be challenging related to finding the correct balance between pulmonary and systemic blood flow. One can use hemostatic clips on the RV-PA conduit to temporarily restrict pulmonary blood flow.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2024
Duke University Medical Center, Durham, North Carolina.
Background: Direct mechanical ventricular actuation (DMVA) with the Anstadt cup is effective for non-blood-contacting biventricular support. Pneumatic regulation of a silicone device augments ventricular pump function. Vacuum attachment facilitates diastolic augmentation critical for biventricular support.
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