What does T-wave change on ECG mean, and what should be done?

Generally, T-wave changes on an electrocardiogram (ECG) may be caused by emotional factors, exercise, hyperkalemia, hypokalemia, cardiomyopathy, and other conditions, and require management according to the specific situation.

1. Emotional factors: When a person experiences intense emotions such as tension, anxiety, or fear, sympathetic nervous system activity increases, which can cause transient changes in cardiac electrical activity, potentially leading to T-wave alterations. It is recommended to place the patient in a quiet and comfortable environment, avoid external disturbances and stimuli, and perform deep breathing exercises to help relax the patient emotionally.

2. Exercise factors: After intense physical activity, changes in cardiac load and metabolism may affect the myocardial repolarization process, leading to T-wave changes. If T-wave alterations occur post-exercise, the patient should rest. During rest, adequate hydration is recommended to replace fluids lost through exercise, thereby promoting blood circulation and elimination of metabolic byproducts.

3. Hyperkalemia: Elevated serum potassium levels reduce the resting membrane potential of myocardial cells, shorten the action potential duration, accelerate repolarization, and result in tall, peaked T waves resembling a "tented" appearance. It is recommended to use medications such as calcium gluconate tablets or furosemide tablets under medical supervision for treatment.

4. Hypokalemia: In hypokalemia, altered myocardial excitability and automaticity prolong the repolarization phase, resulting in flattened or inverted T waves. It is recommended to use medications such as potassium chloride sustained-release tablets or bismuth potassium citrate capsules under medical supervision for treatment.

5. Cardiomyopathy: Structural and functional abnormalities of myocardial cells lead to disturbances in cardiac electrophysiological activity, resulting in T-wave changes. It is recommended to use medications such as metoprolol tartrate tablets or verapamil hydrochloride tablets under medical supervision for treatment.

It is advisable to avoid excessive fatigue and significant emotional fluctuations in daily life to prevent increasing the burden on the heart. Regular ECG follow-ups are recommended to monitor trends in T-wave changes.