The significance of high and low mean arterial pressure
Disease description:
In addition to the routine blood pressure measurement, an average arterial pressure (MAP) is also calculated each time. What is the clinical significance of high or low average arterial pressure?
Doctor's answer (1)
Dr. Tian Hongbo
Mean arterial pressure (MAP) is one of the important indicators for assessing the function of the cardiovascular system. It reflects the average pressure exerted by blood on the walls of blood vessels throughout the circulatory system. The level of MAP has significant clinical implications:
1. The normal range of MAP is between 70 mmHg and 105 mmHg. If the MAP is too low, below 70 mmHg, it may indicate reduced blood supply to organs, especially critical organs such as the brain and heart may experience inadequate perfusion.
2. If the MAP is too high, exceeding 105 mmHg, it places excessive strain on the heart and blood vessels. Prolonged high-pressure states can lead to compensatory cardiac hypertrophy, impaired cardiac function, and even heart failure.
3. Guidance for drug therapy: During intensive care and surgical procedures, MAP serves as an important reference for adjusting the dosage of vasoactive medications to maintain stable blood pressure and tissue perfusion.
4. Early recognition of shock: Low MAP often indicates hypovolemia or decreased cardiac pumping function and is an early sign of shock. Prompt identification and correction of low MAP can help prevent organ failure.
