You get a headache after a stress test because of the intense exercise, dehydration, low blood sugar from fasting, or as a direct side effect from the medications (like adenosine, regadenoson, or dobutamine) used in a nuclear or chemical stress test, causing blood vessel changes or increased heart rate, usually resolving as the body recovers.
What happens after my heart stress test? After completing or stopping the test, healthcare providers monitor your symptoms, heart rate, blood pressure and ECG until it returns to a normal range. This takes about 15 minutes. Once your heart rate has recovered, you are free to go home.
Some medications you receive during a pharmacological nuclear stress test may cause side effects like:
A stress test is generally highly accurate for spotting blocked arteries. Adding imaging tests, like nuclear imaging or an echocardiogram, makes them more reliable. However, without these extra images, stress tests might miss smaller blockages or issues.
A nuclear stress test is a tool to check the heart's health, but some patients feel bad after a nuclear stress test, experiencing temporary side effects from the exercise or medication used. Although generally safe, some patients may experience temporary fatigue, dizziness, or mild allergic reactions.
Other signs you may have atherosclerosis (blocked arteries)
Less than 5 METS is poor, 5–8 METS is fair, 9–11 METS is good, and 12 METS or more is excellent.
An exercise stress test is designed to find out if one or more of the coronary arteries feeding the heart contain fatty deposits that block a blood vessel 70 percent or more. Additional testing is often required to confirm the test result.
The average time on a treadmill for a stress test varies by age, but most people last between 6–12 minutes. Younger, healthier individuals tend to exercise longer, while older adults or those with heart conditions may stop sooner. The test is safe and helps doctors understand your heart's health.
Your target heart rate during a stress test depends on your age. For adults, the maximum predicted heart rate is 220 minus your age. So, if you're 40 years old, the maximum predicted heart rate is 220 – 40 = 180.
During your nuclear stress test, a medicine will be injected into your vein. This medicine is called a “radioactive tracer,” and it will leave your body by the next morning.
A healthcare professional checks the heart while the person walks on a treadmill or pedals a stationary bike. An exercise stress test usually takes about an hour, including the preparation time and the time it takes to do the actual test. The exercise part takes only around 15 minutes.
Stress testing is essential because many cardiac conditions, particularly coronary artery disease, may be undetectable at rest but manifest under stress. By increasing heart rate and blood pressure, stress tests reveal abnormalities in blood flow, heart rhythm, or electrical conduction that are otherwise hidden.
If a nuclear stress test shows that you have poor blood flow because of artery blockages, your healthcare provider will want to keep CAD from getting worse. They'll want to prevent you from having a heart attack. To do this, you may need to: Stop using tobacco products and lower your salt use.
The LAD typically supplies 45–55% of the left ventricle and is therefore considered the most critical vessel in terms of myocardial blood supply. Left: Critical stenosis (95%) of the proximal LAD in a patient with Wellens' Warning.
Nearly half of all Americans have one of the three major risk factors for coronary artery disease: smoking, high blood pressure and high cholesterol. High blood pressure is often called “the silent killer” because you may have it without experiencing any symptoms.
The ability to manage 9 minutes of the Bruce protocol during treadmill exercise testing is associated with very low risk of subsequent cardiac events, regardless of symptoms or ECG changes during the test.
Your maximum heart rate is about 220 minus your age. In the age category closest to yours, read across to find your target heart rates. Target heart rate during moderate-intensity activities is about 50-70% of maximum heart rate. During vigorous physical activity, it's about 70-85% of maximum.
The stress test can use a treadmill or a bike to determine how exercise affects a person with postural orthostatic tachycardia syndrome. You will exercise until you reach the target heart rate, typically 10-12 minutes. During this test, they measure both your heart via EKG and respiratory system using a respirometer.
Coronary arteries with severe blockages, up to 99%, can often be treated with traditional stenting procedure. Once an artery becomes 100% blocked, it is considered a coronary chronic total occlusion, or CTO. Specialized equipment, techniques and physician training are required to open the artery with a stent.
You may feel squeezing, pressure, heaviness, tightness or pain in the chest. It may feel like somebody is standing on your chest. The chest pain usually affects the middle or left side of the chest.