Ischemic Heart Disease: early symptoms you shouldn’t ignore

Ischemic heart disease (IHD) is a pathological condition characterized by an absolute or relative impairment of blood supply to the myocardium due to damage to the coronary arteries. Simply put, it is a condition in which the arteries do not supply enough blood to the heart.

IHD most commonly develops due to the formation of cholesterol plaques that narrow the lumen of the vessels. This can be compared to a clogged pipe: the narrower the passage, the less oxygen the heart muscle receives.

The insidious nature of IHD is that it can develop silently for years, until the narrowing of the vessels becomes critical.

Early signs: what to pay attention to

The most characteristic early sign is angina — a specific discomfort in the chest area. It is important to understand that this is not always a sharp pain. Most often, patients describe it as pressure or tightness behind the sternum, a feeling of heaviness or burning. Sometimes it is mistaken for heartburn or stomach problems.

The discomfort may radiate to the left arm, neck, lower jaw, or under the shoulder blade. It usually lasts from 2 to 10 minutes and occurs during physical exertion, emotional stress, or exposure to cold.

Symptoms often disappear after rest, which can create a false sense of safety.

Atypical manifestations that are easy to miss

IHD does not always present in a typical way. Quite often, the first signs are atypical.

One of these symptoms is shortness of breath during exertion. If previously easy activities — such as climbing stairs or brisk walking — begin to cause breathlessness, this may indicate that the heart is not coping with the workload.

Another sign is unusual fatigue, when even simple daily activities cause pronounced weakness that does not go away after rest.

Some patients experience heart rhythm disturbances — sensations of skipped beats, fluttering, or irregular heartbeat.

In some cases, discomfort may appear in the upper abdomen, mimicking gastritis. This form often leads to misdiagnosis.

What a doctor may detect in the early stages

Even when symptoms are not constant, the body already shows signs that can be detected during medical evaluation.

These include cardiac arrhythmias, which may occur during exertion, as well as elevated blood pressure above 140/90 mmHg, increasing the workload on the heart.

Electrocardiography may reveal changes that are not always visible at rest but become apparent during episodes or stress testing.

Differential diagnosis

Chest pain is not always cardiac in origin. For example, in osteochondrosis, the pain depends on body position and spinal movements rather than physical exertion.

In gastroesophageal reflux disease (GERD), discomfort is often related to food intake and lying down, and may last longer.

Therefore, it is difficult to determine the cause without a medical evaluation.

How to confirm the diagnosis

In the early stages, IHD can be detected through examinations. Key methods include lipid profile testing to assess “bad” cholesterol levels and 24-hour ECG monitoring to evaluate heart function throughout the day.

Echocardiography is used to assess myocardial contractility, and stress tests help detect occult coronary artery disease.

“Red flags”: when to act immediately

Some symptoms indicate a high risk of myocardial infarction and require immediate medical attention.

The most critical is a change like pain — when it occurs at rest, lasts more than 15–20 minutes, or does not subside after rest.

Warning signs also include cold, clammy sweat, sudden paleness, severe nausea, or vomiting.

A particularly important symptom is a strong feeling of fear of death, which often accompanies serious cardiac events and is clinically significant.

In such cases, emergency medical services must be called immediately.

Conclusion

Ischemic heart disease rarely begins suddenly — the body usually gives warning signals long before critical conditions develop.

Timely recognition of early signs helps prevent myocardial infarction and serious complications.

What to do next

If you notice such symptoms or have risk factors, it is important not to delay examination.

With Remed, you can get an online consultation with a doctor, assess your symptoms, determine necessary tests, and receive an individualized action plan.

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Ischemic Heart Disease: Early Signs You Should Not Ignore

Early signs: what to pay attention to

Atypical manifestations that are easy to miss

What a doctor may detect in the early stages

Differential diagnosis

How to confirm the diagnosis

“Red flags”: when to act immediately

Conclusion

What to do next