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Heart catheterization is a minimally invasive test used to measure pressure into specific heart cavities. Heart catheterization generally uses X-ray advice, which requires radiation exposure and does not properly photograph soft tissue. Real-time magnetic resonance imaging fluoroscopy has been the most commonly used method to guide right heart catheterization at the NIH clinical center for several years. We'll use guidewires during otherwise standard MRI catheterization of the right side of the heart through veins and the left side of the heart through the aorta in this protocol. We will begin performing systematic MRI guidewire heart catheterization without using X-ray whenever possible in the second phase of the protocol. During MRI catheterization tailored to the patient's needs, we will review the heart's reaction to hemodynamic provocation.
Source link: https://clinicaltrials.gov/ct2/show/NCT03152773
However, this guidewire does not connect the outer coil and core together in patients with arterial tortuosity or spasm, but in patients with arterial tortuosity or spasm, it has low lubricity and no torque to direct the catheter. In some cases, coronary angioplasty guide wires are needed to tackle a tortuous artery, but they lack the tools to advance the catheter. The Silverway Guide Wire has been developed to solve the issues that a spring- and polymer wire has encountered. The investigators are looking at comparing guide wires in terms of reliability, usability, and complication rate. This new guide wire includes hybrid coating and ACT ONE technology, which connects the wire core and coil to ensure one torque transmission for one.
Source link: https://clinicaltrials.gov/ct2/show/NCT05231889
This is a prospective, single center study that uses a standardized, comprehensive catheterization report to patients with a known or suspected diagnosis of pulmonary vein stenosis, which is undergoing cardiac catheterization at Boston Children's Hospital. The investigators will determine which patient and vein characteristics will determine whether or not a pulmonary vein will have disease will be present.
Source link: https://clinicaltrials.gov/ct2/show/NCT04696289
Central venous catheterization is a procedure that is increasingly used in intensive care patients and patients that must be operated. This central venous vascular access procedure in the historic technique can be performed or it can be carried out with ultrasound guidance. The vein and its neighborhood can be clearly seen and tracked during ultrasound venous catheterization, and it can be followed while the needle is directed to the target in vein puncture. With the Seldinger method, many ultrasound-guided imaging and intervention techniques have been described for catheterization of the internal jugular vein. The image taken with the needle relative to the ultrasound probe's ultrasound probe is described as both in plane and out of plane. Compared to other needle imaging techniques out of plane tracking of the needle, this appears to be a disadvantage in the user's imaging as compared to the in-plane tracking system. The difference between the anteroposterior short axis and in-plane approaches in plane technique differs from that of the classical short axis out of plane design is that the ultrasound is directed from the neck, the needle is about 2-3 cm away from the skin, the needle is extended subcutaneously in the anteroposterior direction, not medially, and the needle is not as long as a point in ultrasound that can be seen longitudinally, and the needle is not as long axis.
Source link: https://clinicaltrials.gov/ct2/show/NCT05409768
Heart disease with a preserved ejection fraction is a significant public health issue that has no recognized cure. However, it's also impossible to tell early stage of HFpEF by resting hemodynamic research and echocardiography in practice because the patients primarily complain of dyspnea during exercise, not resting condition. This report will compare established and novel parameters of cardiovascular hemodynamics with simultaneous, gold standard invasive measures of cardiovascular hemodynamics at rest and exercise stress to determine the role of noninvasive testing in the diagnostic workup for patients with dyspnea on exertion referred to the catheterization lab.
Source link: https://clinicaltrials.gov/ct2/show/NCT05490901
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