Vital signs mainly include blood pressure, body temperature, respiration and heart rate. They are the basis of maintaining normal human life activities, and are most closely related to physiological functions such as circulation, respiration and energy metabolism. Every vital sign has a normal range. In this range, people's life activities are normal, otherwise, people may get sick or even die.
Extended data
1, adult blood pressure
Blood pressure is the pressure produced by blood flowing on the blood vessel wall.
When the heart contracts, the pressure reaches the highest, which is called systolic blood pressure (commonly known as high pressure). ?
When the heart relaxes, the pressure drops to a minimum, which is called diastolic pressure (commonly known as low pressure).
The difference between systolic and diastolic blood pressure is called pulse pressure.
Normal range of adult blood pressure: 90≤ systolic blood pressure.
2. Adult body temperature
Body temperature generally refers to the temperature inside the human body. Measuring position: (1) underarm (commonly used). (2) oral cavity. (3) rectum.
Measurement of axillary temperature The normal axillary temperature of adults is 36 ~ 37℃, which is slightly lower than that of oral cavity and anus. It is slightly lower in the morning, slightly higher in the afternoon, and slightly higher after exercise or eating. Under normal circumstances, no matter how the body temperature fluctuates, the fluctuation range generally does not exceed 65438 0℃. ?
3. Adult breathing
Breathing is the process of gas exchange between the body and the external environment. When we breathe, we inhale oxygen and expel carbon dioxide. 1 inhalation+1 exhalation = 1 breath.
4. Heart rate of adults
Heart rate refers to the number of heartbeats per minute, and commonly used measurement methods are stethoscope and pulse. (1) Normal range of heart rate: in the quiet state of adults: normal heart rate: 60- 100 beats/min. 72 times/minute on average. (2) Abnormal heart rate: tachycardia >; 100/ min. bradycardia
Baidu encyclopedia-vital signs