Normal heart rate is 60-100 beats per minute, and a heart rate of 100 beats per minute is considered tachycardia. Waking up from a nap with a particularly fast heartbeat may be due to physiological factors or hyperthyroidism, paroxysmal supraventricular tachycardia and other diseases, which need to be treated according to the cause.
1. Physiological reasons: When a person is in a sleep state, the vagus nerve is dominant, and the vagus nerve will make the heart rate lower. When people wake up, the sympathetic nerves begin to dominate, the sympathetic nerves will make the heart rate increase, so when people wake up from the nap, they will feel the change of heart rate, the feeling of rapid heartbeat, at this time, we need to rest quietly and regulate the nerves to alleviate the symptoms.
2. Hyperthyroidism: Due to the excessive elevation of thyroid hormones, it will cause heart rate to increase. At this time, you can take propylthiouracil and other medications to actively treat the primary cause of the disease, and after the elimination of the cause of the disease, the heart rate will be returned to normal on its own.
3. Paroxysmal supraventricular tachycardia: the main manifestation is sudden palpitation and dizziness, and the ECG shows more than 3 QRS waves in a row, with a frequency of 160-220 beats per minute. The heart rate can be lowered by stimulating the vagus nerve, such as holding the breath and then exhaling forcefully, stimulating the pharynx to cause nausea, etc. It can also be treated with drugs or radiofrequency ablation.
Waking up from a nap with an especially fast heartbeat is a sign of tachycardia, which requires prompt medical attention to avoid delaying the condition.