Do blood tests show heart problems?

Troponin blood test - troponin is a protein which is released into the blood stream when the heart muscle is damaged. The troponin level provides a quick and accurate measure of any heart muscle damage. It's used to help in the assessment following suspected heart attack.

nhsinform.scot - Tests for diagnosing heart conditions - Heart tests - NHS inform

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Taking a pulse is a very important part of heart health checks. It measures the number of heart beats per minute, assesses if the pulse is regular or not, and identifies the strength of the pulse. Your nurse or doctor may check your pulse, or you can check it yourself. To identify common heart conditions you'll need to have some tests. These could include: Watch NHS Fife's video on how to check your own pulse, and how important it is to go and talk to your doctor or nurse if you notice that your pulse isn't regular.

Blood pressure

Blood pressure is an important measurement that can be taken by your doctor, nurse or healthcare assistant. It’s recorded as two readings: systolic pressure (higher reading) – this records the pressure within the blood vessels as the heart contracts and forces blood out into the arteries diastolic pressure (lower reading) – this records the pressure when the heart fills up with blood again Your blood pressure fluctuates throughout the day, depending on what you’re doing. The "white coat effect" is when your blood pressure rises at the thought of having your blood pressure taken. To prevent this when you get your BP taken, try to relax. You might be asked to sit quietly for at least five minutes beforehand. Tell the person taking your blood pressure about any prescribed medicines you’re taking. Sometimes your doctor may want you to monitor your blood pressure at home over a period of time. This can be either by 24-hour ambulatory monitoring or by home monitoring.

British Heart Foundation have information on measuring your blood pressure at home

Echocardiogram

An echocardiogram - or "echo" - is an ultrasound scan of the heart. It uses high frequency sound waves to create an image of your heart. This is a painless procedure that is usually performed in hospital or in an outpatient clinic. You’ll have jelly applied to your bare chest, and an experienced operator will move the probe around your chest to get good views of your heart.

It can check:

the size of the heart

how well the heart muscle is contracting and relaxing

how well the valves are working

More about having an echocardiogram

Electrocardiogram

An electrocardiogram (ECG) is a test that records the electrical activity of the heart. The ECG reflects what’s happening in different areas of the heart and helps identify any problems with the rhythm or rate of your heart. The ECG is painless and takes around 5-10 minutes to perform.

More about having an electrocardiogram

24-hour or ambulatory electrocardiogram

In this test, electrodes are connected to a small box and attached to a belt. You wear this belt for 24 hours, as you go about your normal daily activities. The ECG will be monitoring and will be able to record any abnormalities over the day. You’ll also be asked to record any symptoms. Then this can be assessed by the electrophysiologist or cardiologist.

Stress test

This stress test - or exercise tolerance test (ETT) or treadmill test - is similar to an ECG but records the activity of the heart as it works harder, for example while you’re walking on a treadmill. This "exercise" ECG records how the heart responds to exercise.

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