The weather was a bit cold and I drank 2 sips of warm water and suddenly I felt flustered and short of breath, my heartbeat accelerated and I felt uncomfortable. What was the reason?

Consider coronary heart disease, angina pectoris, precordial squeezing pain caused by exertion and tension, or arrhythmia, tachycardia, or bradycardia. It is necessary to do electrocardiogram, heart auscultation, and cardiac color ultrasound examination. Avoid fatigue, pay attention to rest, eat lightly, and avoid greasy food. For specific circumstances and specific treatments, for angina pectoris, you can take drugs that expand the coronary artery, inhibit platelet aggregation, and activate blood circulation and remove blood stasis. Antiarrhythmic drugs can be used for cardiac arrhythmias.