Mesenteric angiography

Definition

肠系膜血管造影是一种检查小肠和大肠血管的检查.

Angiography is an imaging test that uses x-rays 用一种特殊的染料来观察动脉的内部. 动脉是将血液从心脏输送出去的血管.

Alternative Names

Abdominal arteriogram; Arteriogram - abdomen; Mesenteric angiogram

How the Test is Performed

This test is done in a hospital. You will lie on an x-ray table. 如果你需要的话，你可以要一些帮助你放松的药物(镇静剂).

• 在检查过程中，你的血压、心率和呼吸都会被检查.
• 卫生保健提供者将刮除并清洁腹股沟. 一种麻药(麻醉剂)被注射到动脉上方的皮肤上. A needle is inserted into an artery.
• 一根叫做导管的细而柔软的管子穿过针头. It is moved into the artery, 向上穿过腹部的主要血管直到它被正确地放置在肠系膜动脉中. The doctor uses x-rays as a guide. 十大赌博平台排行榜可以在类似电视的显示器上看到该区域的实时图像.
• 通过这根管子注射造影剂，看看血管是否有问题. X-ray images are taken of the artery.

在这个过程中可以进行某些治疗. 这些物品通过导管到达需要治疗的动脉区域. These include:

• Dissolving a blood clot with medicine
• Opening a partially blocked artery with a balloon
• 在动脉内放置一根叫做支架的小管子来帮助保持动脉畅通

x光检查或治疗结束后，将导管取出. 按压穿刺部位20至45分钟以止血. 在此之后，检查该区域并使用严密的绷带. 放置针头的腿通常在手术后保持直6小时. 你应该在24到48小时内避免剧烈运动，比如举重.

How to Prepare for the Test

在考试前的6到8小时内，你不应该吃或喝任何东西.

你将被要求穿上病号服并签署一份手术同意书. Remove jewelry from the area being imaged.

Tell your provider:

• If you are pregnant
• 如果你曾经对x射线造影剂有过敏反应, shellfish, or iodine substances
• If you are allergic to any medicines
• 您正在服用哪些药物(包括草药制剂)?
• If you have ever had any bleeding problems

How the Test will Feel

给你麻药时，你可能会感到一阵短暂的刺痛. 当导管插入动脉时，你会感到一阵短暂的剧痛和压力. 在大多数情况下，你只会感觉到腹股沟区域的压力.

染料注射后，你会有一种温暖、发红的感觉. You may have tenderness and bruising 在测试后插入导管的部位.

Why the Test is Performed

This test is done:

• When there are symptoms of a narrowed or blocked blood vessel in the intestines
• 找出胃肠道出血的原因
• 在无法确定原因的情况下，找出持续腹痛和体重减轻的原因
• 当其他研究没有提供足够的关于肠道异常生长的信息时
• 观察腹部受伤后的血管损伤

在更敏感的核医学扫描发现活动性出血后，可以进行肠系膜血管造影. 放射科十大赌博平台排行榜就可以精确定位并治疗放射源.

Normal Results

如果检查的动脉外观正常，则结果正常.

What Abnormal Results Mean

A common abnormal finding is narrowing and hardening of the arteries that supply the large and small intestine. 这可能导致肠系膜缺血，肠不能得到足够的血液来正常工作. 当脂肪物质(斑块)在动脉壁上积聚时，问题就出现了.

Abnormal results may also be due to bleeding in the small and large intestine. This may be caused by:

• Angiodysplasia of the colon
• Blood vessel rupture from injury

Other abnormal results may be due to:

• Blood clots
• Cirrhosis
• Tumors

Risks

导管有损伤动脉或使动脉壁脱落的风险. 这会减少或阻断血液流动，导致组织死亡. This is a rare complication.

Other risks include:

• Allergic reaction to the contrast dye
• 针头和导管插入处的血管受损
• 导管插入处出血过多或出现血块, which can reduce blood flow to the leg
• Heart attack or stroke
• 血肿，针孔处的血块
• Infection
• Injury to the nerves at the needle puncture site
• Kidney damage from the dye
• 血液供应减少对肠道的损害

Considerations

To make a diagnosis, 您的十大赌博平台排行榜也可能在导管血管造影之前或代替导管血管造影进行计算机断层扫描(CT)血管造影或磁共振血管造影(MRA).

References

Mcquinn CW, Orion KC. Endovascular diagnostic technique. In: Sidawy AN, Perler BA, eds. 卢瑟福血管外科和血管内治疗. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 62.

Lo RC, Schermerhorn ML. 肠系膜动脉疾病:流行病学、病理生理学和临床评价. In: Sidawy AN, Perler BA, eds. 卢瑟福血管外科和血管内治疗. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 62.

van den Bosch H, Westenberg JJM, de Roos A. 心血管磁共振血管造影:颈动脉、主动脉和周围血管. In: Manning WJ, Pennell DJ, eds. Cardiovascular Magnetic Resonance. 3rd ed. Philadelphia, PA: Elsevier; 2019:chap 44.