This condition may be due to the development of upright hypotension, which may be caused by physiologic or pathologic reasons, and should be adjusted lifestyle, strengthened nutrition, and supplemented with medication if necessary.
Upright hypotension is diagnosed by a sustained fall in systolic blood pressure of at least 20 mmHg, or diastolic blood pressure of at least 10 mmHg, or both, within the first 3 minutes of moving from a prone to a standing position, or an upright tilt test with a tilt angle of at least 60°. Typical symptoms include a drop in blood pressure accompanied by blackouts, dizziness, narrowing of the visual field, and even fainting.
Common causes are as follows: 1.
1. Physiological factors: weak constitution, autonomic dysfunction, slender body size, poor cardiorespiratory function.
2. Due to pathological factors.
(1) Insufficient blood volume: such as anemia, dehydration, or redistribution of blood volume due to adrenal insufficiency.
(2) Inadequate regulation of blood pressure, such as cardiac insufficiency, prolonged bed rest, fever, and inflammatory states.
The main treatment is to strengthen nutrition, eat small meals, correct anemia, strengthen physical exercise to enhance cardiopulmonary function; at the same time, avoid high temperature working environment, change position as slowly as possible, and avoid hard urination and defecation and coughing; if you need to stand up for a long time, you should wear elastic stockings to increase the volume of return blood.
If the symptoms persist, you can take medication such as Midodrine under the guidance of your doctor to help raise your blood pressure.