What causes chest tightness and palpitations?

Chest tightness and palpitations are common symptoms that may be caused by various factors. Physiological factors such as strenuous exercise, emotional excitement, excessive fatigue, and consumption of stimulating beverages like strong tea or coffee can lead to chest tightness and palpitations. These cases generally do not require special treatment and can resolve spontaneously. Pathological factors also represent a significant cause of chest tightness and palpitations, mainly including cardiac diseases (e.g., coronary artery disease, arrhythmia, heart failure), pulmonary diseases (e.g., emphysema, atelectasis, pulmonary embolism), respiratory tract diseases (e.g., bronchospasm, bronchial stenosis), and diaphragmatic disorders. These conditions may result in weakened cardiac pumping function, insufficient blood and oxygen supply, or impaired respiratory function, thus causing chest tightness and palpitations. Environmental factors such as high-altitude hypoxia and hot, stuffy environments may also contribute to these symptoms. If symptoms persist or worsen, timely medical consultation is recommended to identify the underlying cause through investigations such as electrocardiogram (ECG) and echocardiography, and to receive targeted treatment under medical guidance.