Pneumonic changes in both lungs may be a pulmonary fallout effect, which is generally not serious, or it may be a fallout pneumonia, which is more serious.
1. Pneumonic fallout effect. Generally speaking, when middle-aged and elderly people take the supine position to do chest CT examination, due to the effect of gravity causes most of the blood flow is concentrated in the back, and the posterior part of the lower lobe of both lungs near the subpleural area has more vascular texture, which is easy to produce vascular accumulation, i.e., pulmonary infiltration effect. If the chest CT is done in prone position, due to gravity, the blood flow is again concentrated in the anterior chest, and there is a pendulous change in the opposite part of the back. If there is no symptom, it is just a change of body position, which is not serious in general.
2. Accumulative pneumonia. Accumulative pneumonia is a disease caused by a variety of mixed bacterial infections, mostly due to severe wasting disease, but also due to prolonged bed rest. Because patients are bedridden for a long period of time, respiratory secretions are not easy to cough up, stagnant in the small and medium-sized airways, forming a natural culture medium for bacteria, easy to cause lung infections, resulting in stasis, congestion, edema at the base of the lungs, which in turn leads to the formation of a cumulative pneumonia, which can lead to respiratory failure, phlegm asphyxiation, and respiratory distress, which can endanger the life of the patient.
In conclusion, if there is a change in the accumulation of both lungs, go to the respiratory medicine department in time for examination, differentiate between the effect of lung accumulation and accumulation of pneumonia, and carry out targeted treatment.