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EXPLANATION
✔Correct answer:
Intima and media. An aneurysm is an abnormal bulging or ballooning in the wall of a blood vessel, and it typically affects the intima (the innermost layer) and the media (the middle muscular layer) of the blood vessel. The development of an aneurysm involves the weakening of these layers, which can be due to factors such as atherosclerosis, high blood pressure, trauma, infection, or congenital defects.
The intima consists of a thin layer of endothelial cells that line the lumen of the blood vessel, while the media is composed of smooth muscle cells and elastic tissue that provide structural support and elasticity to the vessel. When these layers are compromised, they become weak and are unable to withstand the pressure of the blood flow, leading to the formation of an aneurysm.
Imagine a rubber balloon (the blood vessel). The balloon's inner lining (intima) and the thick rubber wall (media) keep it intact when it is inflated. If the rubber wall becomes thin and weak, it can stretch too much and form a bulge (aneurysm), similar to what happens in a blood vessel when the intima and media are compromised.
Nurses should focus on monitoring patients for signs of aneurysm growth or rupture, managing risk factors, and educating patients on preventive measures.
- Monitor blood pressure and encourage patients to adhere to antihypertensive medications to reduce the risk of aneurysm rupture.
- Educate patients on the importance of a healthy diet, regular exercise, and avoiding smoking to prevent atherosclerosis.
- Assess for signs of aneurysm complications, such as sudden severe pain, hypotension, and signs of shock, and prepare for emergency interventions if needed.
- Support patients with regular imaging studies (e.g., ultrasound, CT scan) to monitor the size and growth of the aneurysm.
- Provide emotional support and resources for patients dealing with the anxiety related to having an aneurysm.
✘Incorrect answer options:
Intima and adventitia. The adventitia is the outermost layer of a blood vessel, consisting of connective tissue that provides structural support and protection. While the adventitia plays a role in the overall integrity of the vessel, it is not typically the layer where aneurysms primarily develop.
Media and adventitia. The media is indeed involved in the formation of aneurysms, but the adventitia is not the primary layer affected. The weakening and degeneration that lead to aneurysms usually occur in the intima and media layers.
Intima, media, and adventitia. While this answer includes the intima and media, which are correct, it incorrectly adds the adventitia. The adventitia is not usually involved in the primary weakening that leads to aneurysm formation. The focus should be on the intima and media layers.
References
- Ignatavicius, D. D., Workman, M. L., Rebar, C. R., & Heimgartner, N. M. (2018). Medical-Surgical Nursing: Concepts for Interprofessional Collaborative Care. Elsevier.
- Lewis, S. L., Bucher, L., Heitkemper, M. M., & Harding, M. M. (2017). Medical-Surgical Nursing: Assessment and Management of Clinical Problems. Elsevier.