Why does pericardial effusion cause a decreased pulse pressure?
Disease description:
This morning, when my grandfather went to the hospital for a comprehensive examination, he was diagnosed with pericardial effusion as well as a reduced pulse pressure. I would like to know why pulse pressure decreases in pericardial effusion.
Doctor's answer (1)
Dr. Zhang Jianbin
This condition in the patient's disease is generally due to fluid accumulation compressing the heart, impairing cardiac expansion and venous return, which leads to congestion in both systemic and pulmonary circulation. The pressure from the fluid accumulation may restrict the heart's relaxation function, reduce cardiac filling, and cause abnormalities in the heart's blood-pumping function, resulting in decreased myocardial contractility. This may lead to excessive vascular pressure and a reduced pulse pressure difference.
