Why is blood pressure low?

Low blood pressure gradient is usually caused by increased peripheral vascular resistance, increased heart rate, pericardial effusion and other reasons, the specific analysis is as follows:

1. Increased peripheral vascular resistance

If the patient's peripheral vascular resistance increases, the diastolic blood pressure level increases, while the systolic blood pressure of the body does not change much, resulting in low blood pressure gradient.

2. Increased heart rate

If the patient's heart rate increases, the systolic time of the heart becomes longer, the diastolic time shortens, and the amount of blood injected into the aorta in the heart is more, resulting in increased diastolic blood pressure, causing small blood pressure gradient.

3. Pericardial effusion

Patients due to more effusion in the body, resulting in less blood injected into the aorta by the heart, so that systolic blood pressure decreases, and diastolic function is limited, so the change is not large, this phenomenon will also occur.