Episcleral Vein Coagulation
Episcleral Vein Coagulation - Related Videos
01:09
Coagulation
0 Views •
2024
The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries. During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
01:06
Coagulation
0 Views •
2024
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
12:24
Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes
0 Views •
Cited by 9 •
2014
We present a combination of Cryo-electron microscopy, lipid nanotechnology, and structure analysis applied to resolve the membrane-bound structure of two highly homologous FVIII forms: human and porcine. The methodology developed in our laboratory to helically organize the two functional recombinant FVIII forms on negatively charged lipid nanotubes (LNT) is described.
06:00
Laparoscopic Anatomic S7+S8d Resection Preserving Inferior Right Hepatic Vein and S6 with Right Hepatic Vein Transection
0 Views •
2025
We present a laparoscopic technique for anatomic S7+S8d resection with right hepatic vein transection, preserving the inferior right hepatic vein and segment S6. Relying on meticulous anatomical landmarks without intraoperative ultrasound, this approach offers a precise and parenchyma-sparing option for dorsally located right-liver tumors, particularly in settings with limited advanced navigation resources.
05:27
Drawing Blood from Rats through the Saphenous Vein and by Cardiac Puncture
0 Views •
Cited by 87 •
2007
Blood draws are necessary in a large number of studies, for example to study the pharmacokinetics profile of a compound. Here, we demonstrate how to draw blood from rats using two techniques: blood draw from the saphenous vein or by cardiac puncture.
FAQs
The key physiological effect is increased resistance to aqueous humor outflow through the conventional trabecular pathway. Coagulating selected episcleral veins alters venous drainage from the eye, making fluid passage less efficient and producing a sustained increase in intraocular pressure. This pressure elevation provides a controlled experimental condition for studying pressure-related ocular injury.
The conventional trabecular pathway links aqueous humor drainage to the episcleral venous system, so changes in downstream venous resistance can influence intraocular pressure. Episcleral vein coagulation exploits this relationship rather than targeting the fluid-producing tissues directly. As a result, the model connects vascular outflow changes with pressure elevation and subsequent biological responses in the eye.
Its primary manipulation occurs in the ocular venous drainage system, not in the retina or optic nerve. That distinction allows researchers to examine retinal ganglion-cell injury and optic nerve damage as consequences of elevated pressure rather than as immediate effects of surgical tissue destruction. The model therefore helps separate pressure-related mechanisms from direct neural or retinal injury.
The procedure uses a microsurgical approach in which selected episcleral veins are identified and treated with controlled cautery. The intended result is vascular modification sufficient to increase resistance to aqueous humor outflow and sustain elevated intraocular pressure. Because the source material does not specify instruments, anesthetic protocols, or detailed operative steps, those parameters should be defined by the experimental protocol.
Researchers use it to create an animal model with sustained intraocular pressure elevation, a central condition for investigating glaucoma-related damage. The resulting model supports analysis of retinal ganglion-cell injury and optic nerve damage while preserving the vascular manipulation as the initiating experimental variable. It is therefore useful for studying how pressure contributes to disease progression.
This model can support evaluation of pressure-lowering treatments as well as potential neuroprotective therapies. Pressure-lowering studies address the elevated intraocular pressure produced by altered venous drainage, whereas neuroprotective investigations focus on limiting retinal ganglion-cell or optic nerve injury. Its value lies in connecting treatment effects with both pressure regulation and pressure-related neural damage.