简介：
Overview
This protocol demonstrates the placement of a delayed constricting device, an ameroid constrictor, around a coronary artery in a swine model. This technique is essential for creating an ischemic area of the heart, facilitating the study of new diagnostic imaging techniques and treatment methods for cardiovascular disease.
Key Study Components
Area of Science
- Cardiovascular research
- Surgical techniques in animal models
- Diagnostic imaging methods
Background
- The delayed constrictor device is designed to induce cardiac ischemia.
- This model is valuable for evaluating new treatments for heart disease.
- The procedure is relatively simple and requires no post-operative maintenance.
- It allows for the study of the efficacy of various diagnostic techniques.
Purpose of Study
- To develop a cardiac ischemia model in swine.
- To evaluate new methods of treatment for heart disease.
- To assess the effectiveness of diagnostic imaging techniques.
Methods Used
- Anesthesia and catheterization of the pig.
- Left thoracotomy to expose the heart.
- Placement of the ameroid constrictor around the coronary artery.
- Post-operative imaging to assess heart function and ischemic area.
Main Results
- Successful placement of the ameroid constrictor in 25 Yorkshire pigs.
- Twenty pigs survived to follow-up procedures.
- Imaging at 28 days post-placement showed measurable heart function.
- Different encasements of the constrictor were evaluated.
Conclusions
- The technique allows for controlled induction of cardiac ischemia.
- It provides a reliable model for testing new cardiovascular treatments.
- Further studies can build on this model for improved heart disease therapies.
What is the purpose of using an ameroid constrictor?
The ameroid constrictor is used to create a controlled ischemic area in the heart for research purposes.
How does this model benefit cardiovascular research?
It allows researchers to evaluate new diagnostic techniques and treatment methods in a living organism.
What are the advantages of this surgical technique?
The procedure is relatively simple and does not require post-operative maintenance of the device.
How long can the effects of the constrictor be studied?
The study followed pigs for up to 16 weeks post-surgery.
What imaging techniques were used in the study?
MRI was used to measure heart function and the size of the ischemic area after 28 days.
What was the survival rate of the pigs after the procedure?
Out of 25 pigs, 20 survived to the follow-up procedure.
繁體中文
