简介：
Overview
This article presents a technique for delivering injectate into the left ventricular myocardium of the rabbit heart using percutaneous contrast echocardiography guidance. The method aims to enhance the testing of novel cardiac regenerative therapies in preclinical models.
Key Study Components
Area of Science
- Cardiac regenerative medicine
- Preclinical animal models
- Echocardiography techniques
Background
- Novel therapies in cardiac medicine require rigorous testing.
- Large animal models are essential for preclinical studies.
- Contrast echocardiography can guide precise injections.
- Rabbits are commonly used in cardiac research.
Purpose of Study
- To demonstrate a safe injection technique for cardiac therapies.
- To utilize echocardiography for accurate delivery of injectate.
- To provide a method for hypothesis testing in cardiac research.
Methods Used
- Anesthetizing the rabbit and preparing the chest.
- Using a clinical ultrasound system to obtain an acoustic window.
- Loading a syringe with marked cells and a contrast agent.
- Guiding the needle to the myocardium under ultrasound.
Main Results
- The injectate was delivered safely into the myocardium.
- Transmural hyperechogenicity confirmed successful injection.
- The technique allows for effective visualization during the procedure.
- This method can facilitate the testing of new cardiac therapies.
Conclusions
- The percutaneous echocardiography-guided technique is effective.
- It provides a valuable tool for cardiac regenerative research.
- Further studies can build on this method for human applications.
What is the main goal of this procedure?
The main goal is to safely deliver injectate into the rabbit heart's myocardium using echocardiography guidance.
Why are large animal models important in cardiac research?
They allow for extensive testing of novel therapies before human trials.
How is the echocardiography guidance utilized?
It helps in accurately positioning the needle for injection into the myocardium.
What confirms the successful delivery of the injectate?
Transmural hyperechogenicity at the injection site in echocardiographic images confirms success.
What are the implications of this technique?
It provides a method for testing new cardiac therapies in preclinical settings.
What type of anesthesia is used for the rabbits?
The rabbits are anesthetized to ensure safety and minimize discomfort during the procedure.
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