How does postoperative pulmonary edema do

summary

Many people may not know what kind of condition postoperative pulmonary edema is. In fact, it is also a kind of postoperative sequelae, because some can be completely avoided, and some can not be avoided. Let's talk about postoperative pulmonary edema.

How does postoperative pulmonary edema do

First, although the hydrostatic pressure of pulmonary microvessels and interstitium is affected by posture, gravity, lung volume and even the volume of circulating fluid, the pulmonary interstitium and alveoli can keep ideal moist state. * this is due to the characteristics of lymphatic system, interstitial protein and compliance, which help to combat fluid retention and to continuously remove excess water in the lungs.

Second, when the hydrostatic pressure and permeability of pulmonary vessels increase, the lymphatic flow can increase more than 10 times. The secondary effect is the dilution effect of interstitial proteins. It is caused by the increase of fluid filtration caused by the increase of hydrostatic pressure in microvessels, which reduces π PMV and in turn reduces net filtration excess, but it has no effect on pulmonary edema caused by the increase of vascular permeability.

Third, another factor to prevent pulmonary edema is the effect of compliance change. The gel structure of tight junctions in pulmonary interstitium is not easy to deform, and the compliance is poor. The pressure rises rapidly after pulmonary interstitial fluid accumulation and prevents further filtration. But at the same time, because of the small expansion of interstitial cavity, the speed of removing interstitial water can not catch up with the speed of microvascular filtration.

matters needing attention

After knowing what kind of situation the postoperative pulmonary edema is, the family members of the patients must take good care of the patients, and be patient with the patients. If any abnormal situation is found, they should timely advise the doctor.