核压力试验

定义

核压力试验 is an imaging method that uses radioactive material to show how well blood flows into the heart muscle, 休息时和活动时都可以.

选择的名字

Sestamibi stress test; MIBI stress test; Myocardial perfusion scintigraphy; Dobutamine stress test; Persantine stress test; Thallium stress test; Stress test - nuclear; Adenosine stress test; Regadenoson stress test; CAD - nuclear stress; Coronary artery disease - nuclear stress; Angina - nuclear stress; 胸部疼痛 - nuclear stress

如何执行测试

This test is done at a medical center or health care provider's office. 它分阶段完成:

您将开始静脉注射(IV)线.

• A radioactive substance, such as thallium or sestamibi, will be injected into one of your veins.
• You will lie down and wait for between 15 and 45 minutes.
• A special camera will scan your heart and create pictures to show how the substance has traveled through your blood and into your heart.

Most people will then walk on a treadmill (or pedal on an exercise machine).

• 在跑步机开始缓慢移动之后, you will be asked to walk (or pedal) faster and on an incline.
• 如果你不能锻炼, you may be given a medicine called a vasodilator (such as adenosine or dipyridamole [persantine]). 这种药使你的心脏动脉扩张.
• 在其他情况下, you may get a medicine (dobutamine) that will make your heart beat faster and harder, 就像你锻炼的时候一样.

你的血压和心律(ECG)将在整个测试过程中受到监控.

当你的心脏尽其所能地工作时, a radioactive substance is again injected into one of your veins.

• 你要等15到45分钟.
• Again, the special camera will scan your heart and create pictures.
• You may be allowed to get up from the table or chair and have a snack or drink.

Your provider will compare the first and second set of pictures using a computer. This can help detect if you have heart disease or if your heart disease is becoming worse.

如何准备考试

You should wear comfortable clothes and shoes with non-skid soles. 你可能会被要求在午夜之后不要吃东西或喝水. You will be allowed to have a few sips of water if you need to take medicines.

You will need to avoid caffeine for 24 hours before the test. 这包括:

• 茶和咖啡
• 所有的苏打水，即使是那些标有不含咖啡因的
• Chocolates, and certain pain relievers that contain caffeine

许多药物会干扰血液检查结果.

• Your provider will tell you if you need to stop taking any medicines before you have this test.
• Do not stop or change your medicines without talking to your provider first.

考试的感觉如何

在测试过程中，有些人会觉得:

• 胸部疼痛
• Fatigue
• 腿部或脚部肌肉痉挛
• 呼吸急促（气促）

If you are given the vasodilator drug, you may feel a sting as the medicine is injected. 随之而来的是一种温暖的感觉. Some people also have a headache, nausea, and a feeling that their heart is racing.

If you are given medicine to make your heart beat stronger and faster (dobutamine), 你可能会头痛, nausea, 或者你的心跳得更快更猛.

在测试过程中，人们很少会经历:

• 胸部不适
• 头晕
• 心慌
• 呼吸急促（气促）

If any of these symptoms occur during your test, tell the person performing the test right away.

为什么要进行测试

The test is done to see if your heart muscle is getting enough blood flow and oxygen when it is working hard (under stress).

您的十大赌博平台排行榜可能会要求进行此测试以了解:

• How well a treatment (medicines, angioplasty, or heart surgery) is working.
• If you are at high risk for heart disease or complications.
• If you are planning to start an exercise program or have surgery.
• 新发胸痛或心绞痛加重的原因.
• 你可以期待什么之后，你有一个 心脏病. 

核压力测试的结果可以帮助:

• 确定你的心脏跳动的情况
• 确定适当的治疗方法 冠心病
• 诊断冠状动脉疾病
• 看看你的心是否太大了

正常的结果

A normal test most often means that you were able to exercise as long as or longer than most people of your age and sex. You also did not have symptoms or changes in blood pressure, 你的心电图或引起关注的心脏图像.

A normal result means blood flow through the coronary arteries is probably normal.

The meaning of your test results depends on the reason for the test, your age, 还有你的心脏病史和其他医疗问题.

异常结果意味着什么

异常结果可能是由于:

• 心脏某部分的血流量减少. The most likely cause is a narrowing or blockage of one or more of the arteries that supply your heart muscle.
• Scarring of the heart muscle due to a previous 心脏病.

测试后，您可能需要:

• 血管成形术和支架置入
• 心脏药物的变化
• 冠状动脉造影
• 心脏搭桥手术

Risks

并发症很少见，但可能包括:

• 心律失常
• 检查时心绞痛加重
• 呼吸困难或类似哮喘的反应
• 血压剧烈波动
• 皮疹

您的十大赌博平台排行榜将在测试前解释风险.

注意事项

In some cases, other organs and structures can cause false-positive results. However, special steps can be taken to avoid this problem.

您可能需要其他测试，例如 心导管检查，这取决于你的测试结果.

参考文献

Amsterdam EA, Wenger NK, Brindis RG等. 2014 AHA/ACC guideline for the management of patients with non-ST-elevation acute coronary syndromes: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 我是科尔·卡迪诺. 2014;64(24):e139-e228. PMID: 25260718 pubmed.ncbi.nlm.nih.gov / 25260718 /.

Dorbala S, DiCarli MF. 核心脏病学. In: Libby P, Bonow RO, Mann DL, Tomaselli GF, Bhatt DL, Solomon SD, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 12th ed. Philadelphia, PA: Elsevier; 2022:chap 18.

Fihn SD, Blankenship JC, Alexander KP，等. 2014 ACC/AHA/AATS/PCNA/SCAI/STS focused update of the guideline for the diagnosis and management of patients with stable ischemic heart disease: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines, 以及美国胸外科协会, 预防心血管护士协会, 心血管血管造影与干预学会, 和胸外科学会. 我是科尔·卡迪诺. 2014;64(18):1929-1949. PMID: 25077860 pubmed.ncbi.nlm.nih.gov / 25077860 /.

Flink L, Phillips L. 核心脏病学. In: Levine GN, ed. 心脏病的秘密. 6th ed. Philadelphia, PA: Elsevier; 2023:chap 8.