Coronary Sinus Cannulation
Coronary Sinus Cannulation - Related Videos
06:18
Measurement of Myocardial Lactate Production for Diagnosis of Coronary Microvascular Spasm
0 Views •
Cited by 15 •
2021
Myocardial lactate production (coronary arterial-venous difference in serum lactate level) during coronary spasm provocation testing is considered as a highly sensitive marker that reflects acetylcholine-induced myocardial ischemia due to microvascular spasm. This article presents the procedures to assess myocardial lactate production for the diagnosis of coronary microvascular spasm.
13:10
Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery (ALCAPA)
0 Views •
Cited by 7 •
2017
Surgical correction of ALCAPA is highly recommended, regardless of age or the degree of intercoronary collateralization. This protocol presents a technique for the direct re-implantation of adult-type ALCAPA into the aorta to re-establish the dual-coronary perfusion. Whenever feasible, direct re-implantation is preferred to other surgical correction techniques.
08:46
Nose, Sinuses, Oral Cavity and Pharynx Exam
0 Views •
2023
Source: Richard Glickman-Simon, MD, Assistant Professor, Department of Public Health and Community Medicine, Tufts University School of Medicine, MA This video provides an overview of sinus, nose, and throat examinations. The demonstration begins with a brief overview of the anatomy of the region. The upper third of the nose is bony, and the bottom two-thirds are cartilaginous. Air entering the nares passes through the nasal vestibules and into the narrow passageway between the nasal septum...
02:05
Intraduodenal Cannulation in a Rat Model for Immunopathology Studies
0 Views •
2025
This video demonstrates intraduodenal cannulation in a rat model. After anesthetizing the rat, the duodenum is located and a small puncture is created. A J-shaped cannula with a beveled tip is carefully inserted and secured, and the incision is closed. The cannulated rat model enables intra-intestinal infusion for immunopathology studies.
06:25
Coronary Angiography During Ex-Situ Heart Perfusion in a Porcine Model
0 Views •
2024
Screening for coronary artery disease could increase the procurement of donor hearts with extended criteria. A protocol for performing reproducible coronary angiography during ex-situ heart perfusion is described herein in a porcine model.
FAQs
Successful coronary sinus cannulation depends on three linked engineering requirements: accurate navigation, stable tip placement, and controlled flow. Navigation brings the catheter to the intended venous location, while stability maintains access during measurement or delivery. Flow control then helps regulate how blood, cardioplegia, therapeutics, or contrast agents interact with the cardiac circulation, making positioning and fluid management inseparable design considerations.
The coronary venous anatomy sets the path that the catheter must follow and the location in which its tip must remain. Because the method depends on accurate navigation and secure positioning, anatomical fit is central to reliable access. In device development, this makes the venous route and placement requirements important constraints when engineers evaluate catheter geometry and positioning performance.
Catheter, sensor, and cardiac support designs must accommodate both access and function at the coronary sinus. A catheter must support navigation and secure positioning, while sensors may be intended to obtain pressure information. Flow handling is equally important when the device supports infusion. These requirements connect mechanical design decisions with the quality and control of cardiac measurements or delivery.
Coronary sinus cannulation can provide three different kinds of controlled access: blood sampling, pressure measurement, or infusion. Sampling supports examination of blood from the cardiac venous circulation, pressure measurement captures pressure at the accessed site, and infusion uses the positioned catheter to introduce a selected agent. The intended output determines how placement and flow should be managed.
A basic workflow begins with venous access, followed by advancement through the right atrium toward the coronary sinus. The catheter tip is then positioned and secured so the intended measurement or infusion can occur. This sequence highlights why navigation and final placement are not separate concerns: an apparently completed insertion is useful only when the tip remains stable and flow can be controlled.
In cardiac applications, the approach supports retrograde cardioplegia delivery, targeted therapeutics, and contrast-agent administration. These uses share a need for controlled access to the cardiac circulation, but their practical purpose differs: cardioplegia, therapeutics, and contrast agents each represent a distinct delivery objective. The application therefore influences what the catheter system must deliver or measure.