What Is Pulmonary Congestion?

Pulmonary congestion is an overfilling of blood in the lung capillaries and is caused by left ventricular congestion in the lungs. Divided into overflow (also known as active) congestion and obstructive (also known as passive) congestion. The former is an increase in blood flow into the lungs, and the outflow is also increased or normal, resulting in pulmonary capillaries being overfilled. The latter is due to normal or increased blood flow and reduced flow, resulting in congestive congestion of the lungs. Pulmonary congestion occurs mainly in hot and hot seasons. On the basis of prolonged pulmonary congestion, due to the abnormal increase in blood volume in the lungs, the serous components in the blood leak into the alveoli, bronchioles and interstitial lungs, causing pulmonary edema.

Basic Information

Causes of pulmonary congestion

Spillover

Lung congestion is mainly caused by prolonged overcrowding, stuffiness, and inhalation of a lot of hot air.

2. Blocking (passive)

Congestion mainly occurs in cardiac diseases with reduced compensatory functions, such as myocarditis, heart dilatation, and heart failure caused by various toxic diseases. In addition, during pericarditis, a large amount of exudate in the pericardium affects the diastole of the heart and causes the pulmonary veins to return. When the gas is flatulent, the negative pressure in the thorax is reduced and the large veins are compressed. Causes congestive pulmonary congestion.

Clinical manifestations of pulmonary congestion

Dyspnea, persistent cough and sputum, together with the symptoms of the original heart disease, the dyspnea can gradually increase, the patient cannot lie flat, and even wake up from a dream due to sudden asthma. In addition, there are cyanosis and rapid heartbeat. As the disease progresses, the patient coughs brown sputum, serous sputum, or bloody foamy sputum.

On physical examination, the respiratory frequency was 4 to 5 times higher than normal. The auscultation was accompanied by wet rales on the lung bases on both sides, eyeballs protruding, pulses accelerated, auscultation second heart sounds increased, and body temperature increased.

Pulmonary congestion

Physical examination

Lung auscultation showed increased alveolar sounds, percussion showed drum sounds, and pulse frequency. When active congestion, the pulse is strong and strong, and the heart sound is enhanced; when passive congestion, the pulse is weak and the heart sound is also weak.

2.X-ray inspection

The shadows near the hilum increased, the lung field in both lungs had thicker lung texture, and the apex and base were clearer. Increased hilar pulsation.

Pulmonary congestion diagnosis

Combined with the history of left heart failure, coughing bloody foamy sputum, dyspnea and other symptoms, and X-ray examination to increase the lung texture shadow near the hilar can help diagnosis.