Proteus pneumonia

Introduction to Proteus pneumonia Proteus is a common strain of normal intestinal flora. The main related to human infection are common Proteus and Proteus mirabilis, which can cause urinary tract infection and infection of abdominal incision. It is rare to cause pneumonia. Exact incidence statistics. It is rare in community infections, accounting for 3.4% to 5.8% of nosocomial infections. Similar to other Gram-negative bacilli pneumonia, it is mainly a proteobacteria that is inoculated into the oropharynx. Normal people carry this strain very little. In old age, the use of antacids or H2 receptor blockers leads to an increase in the pH of the gastric juice, poor personal hygiene, and increased colonization of Proteobacteria in the gastrointestinal surgery. When the body's resistance is reduced and the amount of bacteria inhaled is large, and the virulence is strong, pneumonia occurs. basic knowledge The proportion of the disease: the incidence rate is about 0.001% -0.003% Susceptible people: no specific people Mode of infection: non-infectious Complications: lung abscess bacteremia

Proteus pneumonia

(1) Causes of the disease

The strain of Enterobacteriaceae is negative for Gram stain. The main related to human infection are common Proteus and Proteus mirabilis. Proteus has obvious morphological characteristics, which can be spherical or filamentous, and the flagella is in common medium. It grows well and has migration characteristics as its important identification characteristics. The culture has a special odor. Hemolysis can be seen in blood agar medium. Proteus can exist in soil, sewage and intestines, etc. Instruments are a common means of transmission.

(two) pathogenesis

Similar to other Gram-negative bacilli pneumonia, mainly Proteus inoculated into the oropharynx, which is rarely carried by normal people. In the elderly, the use of antacids or H2 blockers leads to an increase in gastric pH, and personal hygiene. Poor, gastrointestinal surgery, promyelobacteria colonization increased, when the body's resistance decreased and the amount of bacteria inhaled, the virulence is strong, pneumonia occurs.

At autopsy, the affected lungs were densely deformed, and some abscesses were seen. Some large cavities and pleural effusions were rare. The solid alveolar cavity was filled with red blood cells, mixed with exuded mononuclear cells and Polymorphonuclear neutrophils, in some patients, the alveolar wall structure is destroyed, the lung volume of the alveolar collapse is reduced, and the inflammatory cells in the area where the alveolar damage occurs are mostly neutrophils.

Proteus pneumonia prevention

Main measures:

1. Remove sources of pollution, strictly disinfect, follow the isolation system and actively treat the primary disease.

2. Selective intestinal decontamination to remove Gram-negative bacilli in the intestine.

Proteus pneumoniae complications Complications lung abscess bacteremia

Pleural effusion is rare, lung abscess is more common, some patients can see large cavities, and bacteremia is rare.

Proteus pneumonia symptoms Common symptoms Difficulty breathing Diabetes, drowsiness, snoring, tremors

Proteus pneumonia occurs in older males with chronic lung disease, drunkenness, renal failure, diabetes, etc. Other susceptibility factors include the use of antibiotics, glucocorticoids and immunosuppressants, mechanical ventilation, and ICU admission. The clinical manifestations are lack of specificity. The common symptoms are cough, cough and sticky jaundice, chills, fever, chest pain, and difficulty in breathing. Individual patients may have neurological symptoms such as convulsions, tremors of the extremities, etc., but rarely, sometimes only Mild to moderate symptoms of systemic poisoning such as anorexia, fatigue, lethargy, irritability, etc.

Physical examination can be found in the lungs, such as increased vocal fibrillation, percussion is voiced, can be heard and tubular breath sounds, more than half of patients have wet voice.

Examination of Proteus pneumonia

The total number of white blood cells increased, the left side of the nucleus, sputum culture is the main basis for the diagnosis of proteobacteria pneumonia, but there are also problems with oropharyngeal contamination. X-ray performance lacks specificity, mostly pulmonary segmental consolidation, dense oozing shadows distributed along the lung lobe or lung segment, occurring in the posterior segment of the right upper lobe and the dorsal segment of the right lower lobe, a few may present with patchy bronchial pneumonia change.

Diagnosis and identification of Proteus pneumonia

Proteus pneumonia is more common in middle-aged men, and there are many primary diseases. The diagnosis depends on bacteriological examination. The clinical and chest X-ray changes of Proteus pneumonia are similar to those of most intestinal bacterial pneumonia (such as Klebsiella pneumoniae, Escherichia coli, etc.), and the differential diagnosis depends mainly on the examination of pathogens in sputum or other bronchial secretions.

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