Pasteurella pneumonia
Introduction
Introduction to Pasteurella pneumonia Pasteurella includes Pasteurella hemorrhagic, also known as Pasteurella, which is a pathogen of chicken cholera, mammalian hemorrhagic septicaemia and many infectious diseases in humans. Pasteurella multocida is a normal flora of cats and dogs, and is a common cause of respiratory infections in many animals and birds. Pasteurella hemorrhagic is a common cause of human cellulitis caused by dog and cat bites, which can cause respiratory infections in humans, but few reports have been made. basic knowledge The proportion of illness: 0.02% Susceptible people: no specific people Mode of transmission: pathogen transmission Complications: lung abscess emphysema sepsis
Cause
Pasteurellosis pneumonia
Causes:
Pasteurella includes Pasteurella hemorrhagic, also known as Pasteurella, which is a pathogen of chicken cholera, mammalian hemorrhagic septicaemia and many human infectious diseases; other species have Pasteurella pneumoniae, P. hemolytica and P. ureue, Pasteurella hemorrhagic is a small bipolarly stained Gram-negative coccus that grows well in serum-containing agar However, growth is inhibited in Mac Conkey medium, which produces a capsule that interferes with the phagocytosis of leukocytes. It can survive for 3 weeks in soil and water, and the animal can survive for 2 months.
Pathogenesis:
B. septicum contains a polysaccharide capsule that interferes with the phagocytosis of leukocytes. In addition, this bacterium produces endotoxin. Most of the bleeding septice pneumonia pneumonia occurs in patients with chronic lung disease. After inhalation, it can multiply in the lungs, destroy lung tissue, and further cause lung tissue necrosis, lung abscess formation, emphysema and sepsis. 20% of cases may involve the pleura, but localized necrosis is easily formed due to subpleural lesions. Pneumonia, so empyema occurs less, but can directly affect other lung segments through bronchial dissemination.
Prevention
Pasteurella pneumonia prevention
Keep away from cats and dogs, birds and other animals, pay attention to the hygiene of domestic animals. If you are bitten by dogs and cats, you should go to the hospital for vaccination.
Complication
Pasteurella pneumonia complications Complications lung abscess emphysema sepsis
Complicated with lung abscess, emphysema and sepsis.
Symptom
Pasteurella pneumonia symptoms common symptoms high fever hemoptysis dyspnea pleural effusion chest pain pus fever
The performance is related to the underlying diseases. Firstly, the underlying diseases are aggravated. For example, the cough is aggravated, the purulent sputum is increased, and the dyspnea is aggravated. The underlying disease is a bronchial dilatation in patients with bronchiectasis, or even massive hemoptysis. In addition to the aggravation of the underlying disease, the patient may appear. Fever, even high fever, chest pain can cause chest pain and other symptoms of pleurisy.
Examine
Examination of Pasteurella pneumonia
, pleural effusion or blood specimens can be found Gram-negative cocci, positive for bacterial culture. X-ray showed a leaf, multi-leaf or diffuse uneven infiltration change, involving the lung base, upper lobe involvement is rare, 20% of cases can involve the pleura, pleural reaction, but less empyema.
Diagnosis
Diagnosis and identification of Pasteurella pneumonia
diagnosis
There is no characteristic change in the clinical manifestations of Pasteurella pneumoniae pneumonia. About 50% of cases have a history of animal contact, which occurs in patients with chronic lung disease. The original basic disease is further aggravated. Suspicious cases should be For sputum, pleural effusion or blood specimens are subjected to Gram staining and bacterial culture.
Differential diagnosis
The bacterium is similar in morphology to Brucella, Yersinia, Francis and Haemophilus influenzae, and the final identification depends on the history and bacterial identification.
