Why does pulmonary embolism cause hemoptysis

summary

After the emergence of pulmonary embolism, it can cause chest pain, cough, and even dyspnea. Let's see why pulmonary embolism causes hemoptysis.

Why does pulmonary embolism cause hemoptysis

First of all: when pulmonary embolism, blood stasis, pulmonary edema, alveolar wall, or endobronchial capillary rupture, bronchial submucosa, bronchial varices rupture, blood into the alveoli or bronchus, and finally cough up through the air tube.

Secondly: pulmonary embolism is like a thing blocking the pipe of running water, but the source of water is still constantly flowing out, resulting in a sharp rise in pressure behind the blockage. Because the pulmonary vessels are overfilled and the pulmonary artery pressure rises sharply, it is easy to cause thinning of the vessel wall and bleeding

Finally: pulmonary embolism hemoptysis should be dark red, which is also a way to judge whether it is pulmonary embolism ~ why does pulmonary embolism have dark red blood? It is because the embolus falls off and enters the pulmonary artery to form pulmonary embolism, and the blood at the embolism site is retained, causing pulmonary edema and blood extravasation. After entering the alveoli, it is coughed up through the bronchus and trachea. Because the secretion has blood components, it is difficult to control I think it's dark red.

matters needing attention

During bedridden period, patients should often move their legs. They can do leg function training, or raise their lower limbs, which can reduce blood stasis of lower limbs, effectively promote blood circulation, and avoid venous embolism of lower limbs.