What is permissive hypercapnia?

Permissive hypercapnia is a strategy that is sometimes used in artificial prison of patients who have difficulty breathing. Hypercapnia means that there is too much carbon dioxide in the blood. Normally, when patients are artificially ventilated, the goal is to maintain oxygen and carbon dioxide in the normal limits. In some patients with certain lung problems, this may mean that the pressure and air volume entering the lungs becomes high enough to stretch and damage the fragile lung tissue. Permissive Ventilation Hypercapnia (PHV) is an alternative approach that allows carbon dioxide levels to rise higher than usual, so ventilation can be performed at lower, less potentially harmful, pressures and volumes. The body is trying to compensate for the heavier breathing and the kidneys are treated by Levels bicarbonate in an effort to make alkaline blood. Traditionally, doctors would give the patient something like a bicarbonate in performing permissive hypercapnia to bring the pH back but recentlyIt was assumed that low pH could have a protective effect on the lungs and other organs. This protection could occur because hypercapnia prevents some cells from releasing inflammatory substances.

Although permissive hypercapnia is not suitable for all patients, it has been suggested that this could benefit some patients with a condition in which fluid and proteins leak into the lungs, causing sudden breathing problems. This condition, known as respiratory distress syndrome for adults, is most common in people with chest infections. It can also affect patients with a number of other problems, including serious accidental injuries. Other patients who might benefit from permissive Ypercapnia gauge include those that experience severe asthma attacks and those suffering from lung diseases and bronchitis.

Permissive hypercapnia is not recommended in some patients such as in patients with brain injury. This is because one of the effects of hypercapnia is to expand the blood vessels in the brain. Such enlargement increases blood flow and pressure inside the brain, which increases the likelihood of brain bleeding.

Patients with heart and blood circulation problems may also be threatened by permissive treatment of hypercapnia, since higher carbon dioxide levels may affect the strength and rhythm of the heart rhythm. This could cause the circulation to collapse completely. Due to its potential risks, permissive hypercapnia is used only for patients where the risks of normal ventilation are greater than the risks of hypercapnia.