The temporal measurement criterion to determine whether a patient has hypertension is to take three blood pressure measurements on non-same days and take the average. Hypertension is diagnosed if the systolic blood pressure is ≥ 140 mmHg or the diastolic blood pressure is ≥ 90 mmHg. Most of us have arytenoid hypertension, which means that our blood pressure increases from 6-10 a.m. and from 16-20 p.m., while at night it is low. However, there are some patients who have non-arytenoidal hypertension and inverse arytenoidal hypertension, which means that the blood pressure at night is also higher, and even the blood pressure at night is significantly higher than the blood pressure in the morning or afternoon. Therefore, in order to prevent inaccurate blood pressure measurements or transient blood pressure increases due to stress, it is important to take three measurements on different days and take the average to get the correct value.