ตรวจหัวใจ “EST” กับ “Echo” ต่างกันอย่างไร เลือกตรวจแบบไหนดี

<h2>Heart Health Check “EST” vs “Echo”: Which One Suits You Best? 
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“Heart” is an organ that works continuously and also affects the function of other organs in the body. Therefore, assessing the “heart’s” performance is important. But which type of test is suitable for you between Echocardiography (ECHO) and Exercise Stress Test (EST)? Let’s first look at how these two tests differ and what results they provide!
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<h2>Differences Between Heart Health Checks “EST” and “Echo” 
</h2>
The choice of heart health check “heart” mostly depends on the doctor’s judgment. The doctor will consider many factors including medical history, health background, and risk factors for disease. Importantly, the patient must provide complete and truthful information to the doctor to select the most appropriate test method. The criteria that patients should know are as follows:
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<h2>Principles of Operation and What Can Be Detected</h2>
<ul>
<li>EST : This is an electrocardiogram test during physical exertion (Exercise Stress Test). It works by stimulating the heart to beat faster, similar to exercise. This test helps doctors diagnose ischemic heart disease well. If the patient has ischemic heart disease or coronary artery stenosis, blood supply to the heart muscle is insufficient, causing abnormal electrocardiogram results.</li>
</ul>
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<ul>
<li>Echo : This is a heart examination using high-frequency sound waves (Echocardiogram, Echocardiography) to measure the heart’s performance. It uses the reflection of high-frequency sound waves emitted from the probe passing through the chest wall to the heart. When the sound waves pass through different tissues, they produce different reflected signals between fluid and tissue. A computer translates these signals into images displayed on the screen, showing the shape, size, function of the heart muscle, and heart valves. This reveals the heart’s performance such as muscle contraction, chamber size, blood flow within the heart, blood clots in the heart, and the positions of blood vessels entering and leaving the heart.</li>
</ul>
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<h2>Which Heart Test is Suitable for Whom?</h2>
<ul>
<li>EST : Suitable for adults aged 40 and above, both with and without risk factors for coronary artery disease, such as heavy smokers, people with high blood lipid levels, diabetic patients, hypertensive patients, or those who frequently experience chest tightness during exertion or exercise.</li>
</ul>
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<ul>
<li>Echo : Suitable for patients experiencing shortness of breath, difficulty breathing, and those with arrhythmias.</li>
</ul>
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<h2>Heart Health Check Procedures</h2>
<ul>
<li>EST : Staff will attach electrodes to measure the electrocardiogram. The patient will start walking slowly on a treadmill, gradually increasing speed and incline. The test takes about 15-20 minutes. Blood pressure will be measured periodically. If the patient has ischemic heart disease, the electrocardiogram will show changes. Once sufficient diagnostic data is collected, the doctor will stop the treadmill test.</li>
</ul>
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<ul>
<li>Echo : The patient lies flat on a bed. Staff attach ECG electrodes on the chest to monitor heart rhythm and rate. The doctor applies gel to the probe and moves it over the chest and under the breast area. The test takes 20-45 minutes and is painless.</li>
</ul>
<h2>Limitations of the Tests</h2>
<ul>
<li>EST : Cannot visualize the heart’s structure. Not suitable for patients with bone or joint diseases and elderly patients.</li>
</ul>
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<ul>
<li>Echo : Can only view the heart’s structure but not the coronary arteries. May be unclear in very obese patients because fat can obstruct high-frequency sound waves.</li>
</ul>
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<h2>Summary Table Comparing Heart Health Checks</h2>
<table style="border-collapse: collapse; border-color: #000000; width: 64.3738%;" border="1">
<tbody>
<tr>
<td style="width: 31.7021%; text-align: center;" width="123">Differences</td>
<td style="width: 44.2881%; text-align: center;" width="236">EST</td>
<td style="width: 24.0341%; text-align: center;" width="242">Echo</td>
</tr>
<tr>
<td style="width: 31.7021%;" width="123">Principle</td>
<td style="width: 44.2881%;" width="236">Stimulates the heart to beat faster, like exercise</td>
<td style="width: 24.0341%;" width="242">Uses high-frequency sound waves</td>
</tr>
<tr>
<td style="width: 31.7021%;" width="123">Suitable for</td>
<td style="width: 44.2881%;" width="236">Age 40 and above, chest tightness during exertion, or chest pain during exercise</td>
<td style="width: 24.0341%;" width="242">Those with swelling and shortness of breath, at risk of heart disease, or patients with arrhythmias</td>
</tr>
<tr>
<td style="width: 31.7021%;" width="123">Diagnosis</td>
<td style="width: 44.2881%;" width="236">Coronary artery stenosis Ischemic heart disease</td>
<td style="width: 24.0341%;" width="242">Enlarged heart, valve stenosis Cardiomyopathy and pericardial diseases</td>
</tr>
<tr>
<td style="width: 31.7021%;" width="123">Procedure</td>
<td style="width: 44.2881%;" width="236">Walking or running on a treadmill with gradually increasing speed</td>
<td style="width: 24.0341%;" width="242">Lying flat on a bed, external chest examination</td>
</tr>
<tr>
<td style="width: 31.7021%;" width="123">Limitations</td>
<td style="width: 44.2881%;" width="236">Cannot see heart structure, not suitable for patients with bone and joint diseases</td>
<td style="width: 24.0341%;" width="242">Only views heart structure, cannot see coronary arteries</td>
</tr>
</tbody>
</table>
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Both heart health checks play an important role in assessing “heart” performance. Whenever you feel that your “heart” is weak, easily fatigued, or you experience chest pain, you should promptly see a doctor for examination, diagnosis, and treatment to restore your “heart” to strength or prevent disease progression. If you neglect your “heart” health, your entire body system will also become weak accordingly.

The decision to perform a heart health check using an Exercise Stress Test (EST) or a high-frequency ultrasound heart examination (Echocardiogram) depends on medical history, age-related risk, and behavior. The doctor will choose the most appropriate method for each patient or may perform both.

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What is the difference between a heart "EST" and "Echo" test? Which one should you choose?

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