Functional Diagnostics

Treadmill Test 

A treadmill test, also known as an exercise stress test, is a diagnostic method used to evaluate heart function during physical activity. It helps detect cardiovascular abnormalities that may not be present at rest. The test is widely used for diagnosing coronary artery disease, assessing functional cardiac capacity, and evaluating the effectiveness of ongoing treatment. 

The procedure is performed in a clinical setting under medical supervision using a treadmill with integrated monitoring systems. During the test, an electrocardiogram (ECG), heart rate, and blood pressure are continuously recorded, along with their response to increasing physical exertion. At the Doctor Sam Medical Center, patients are provided with a modern and comfortable examination environment equipped with advanced technology. All treadmill tests are conducted by experienced specialists in accordance with current clinical guidelines. 

Do you need a treadmill test? 

A treadmill test is often included in a comprehensive medical evaluation for patients with a family history of cardiovascular disease or existing risk factors. It may be recommended in the following cases: 

• Chest pain: to determine whether it is related to cardiac conditions. 
• Unexplained arrhythmia: to assess heart rhythm during physical exertion. 
• Monitoring treatment effectiveness: in cardiovascular disease or hypertension. 
• Reduced exercise tolerance: to evaluate physical capacity. 
• Assessment of anaerobic threshold: in athletes and physically active individuals. 
• Pulmonary conditions: as part of a combined cardiopulmonary evaluation. 
• Atypical symptoms: such as fatigue, dizziness, or shortness of breath. 
• Preoperative assessment: before major surgical procedures with increased cardiovascular risk. 

How is the test performed? 

The test is carried out on a treadmill with electrodes attached to monitor cardiac activity. The patient walks while the speed and incline gradually increase, providing controlled and progressive physical stress. The medical team continuously monitors ECG and blood pressure. The procedure typically lasts from 15 to 60 minutes. The test may be stopped if the patient experiences weakness, significant ECG changes, arrhythmia, or upon reaching 85% of the predicted maximum heart rate. After completion, monitoring continues for an additional 5–6 minutes or until all parameters return to baseline. If repeat testing is required, it is usually performed no earlier than two hours later. 

Are there any contraindications? 

A cardiologist evaluates potential risks and may recommend the test with limitations or avoid it entirely in the presence of serious contraindications. These include: 

• Severe cardiac conditions, such as unstable angina, heart failure, or significant arrhythmias. 
• Acute cardiovascular events, including recent myocardial infarction. 
• Severe respiratory diseases, such as obstructive lung disorders limiting exercise capacity. 
• Serious central nervous system conditions, including stroke within the past 6 months or neurological disorders affecting mobility. 
• Severe injuries or musculoskeletal deformities that may interfere with test performance. 
• Hypertensive crisis. 
• Inability to follow medical instructions or adequately control responses. 
• Severe anemia or grade III–IV obesity. 

For appointments and consultations, please contact the Doctor Sam Medical Center. Our team will help you schedule a visit at a convenient time and provide detailed guidance regarding the procedure.

Electrocardiography

Electrocardiography (ECG) is the most common test used to evaluate heart function by measuring its electrical activity. These electrical impulses trigger the contraction of the heart muscle and maintain a regular heartbeat. Under normal conditions, the heart beats in a coordinated and rhythmic manner. Disturbances in electrical activity may indicate conditions such as arrhythmia, ischemia, or an increased risk of myocardial infarction. An ECG is a simple, non-invasive, and painless procedure that typically takes 5–10 minutes and provides essential information about cardiac health. 

Indications for an ECG: 

• Chest pain, shortness of breath, or fainting episodes. 
• Symptoms of electrolyte imbalance. 
• Monitoring heart failure and evaluating the effectiveness of antiarrhythmic therapy.
• Detection of medication side effects affecting heart rhythm. 
• Thyroid dysfunction affecting cardiac activity. 
• Suspected cardiac conduction disorders. 
• Preoperative cardiovascular risk assessment. 
• Monitoring during pregnancy in cases of cardiac complications or atypical symptoms. 

Fast and accurate cardiac diagnostics in Kyiv 

At the Doctor Sam Medical Center, patients are examined in a comfortable setting using modern ECG equipment capable of detecting even subtle changes in heart rhythm. High-sensitivity devices reduce the risk of inaccurate results, while automated data analysis supports rapid clinical interpretation. We offer a full range of ECG diagnostics, including: 

• ECG for pregnant patients. 
• Extended-lead ECG examinations. 
• Exercise ECG (treadmill test). 
• 24-hour ECG monitoring (Holter monitoring). 

After the procedure, the patient receives a detailed ECG report. The physician provides a preliminary interpretation and recommendations. If needed, you can immediately schedule a consultation with a cardiologist or another specialist for further evaluation. We offer a comprehensive range of additional diagnostics and consultations to ensure accurate and timely diagnosis.

Holter ECG monitoring 

Not all cardiac rhythm abnormalities can be detected during a standard ECG. If symptoms such as palpitations, irregular heartbeats, dizziness, or weakness occur intermittently, a routine test may miss the underlying issue. That is why physicians prescribe Holter ECG monitoring – a method that provides continuous recording of cardiac activity over 24 to 48 hours during a patient’s normal daily routine. 

A Holter monitor is a compact, portable device that records the electrical activity of the heart throughout the day and night. Patients continue their usual activities – working, resting, exercising, and sleeping – while the system captures every variation in heart rhythm. This allows for the detection of intermittent arrhythmias, ischemic episodes, nocturnal abnormalities, and the heart’s response to physical or emotional stress. 

Holter ECG monitoring is most commonly prescribed for patients experiencing palpitations, irregular heartbeats, chest pain, dizziness, or syncope. It is also used to assess treatment effectiveness, monitor patients after myocardial infarction, or evaluate suspected serious rhythm disorders. This is one of the key methods of functional diagnostics, enabling physicians to see a comprehensive picture rather than a brief snapshot of cardiac activity.

The procedure is simple and well tolerated. Electrodes are attached to the chest and connected to a small, lightweight recording device. The monitor does not interfere with daily activities. After the recording period, a specialist analyzes the data and provides a detailed clinical report. This approach allows for the detection of abnormalities that may remain undetected during a standard ECG. 

Holter ECG monitoring is not just a supplementary test, but an important step toward an accurate diagnosis and effective treatment. Even mild but recurrent symptoms should not be ignored. Timely diagnostics help prevent serious complications and maintain long-term heart health.