When you blow air conditioner in summer, be careful of “air conditioning lung”! Mild cough expectoration, severe pneumonia

The rain stopped and the heat burst. The sun was scorching every day these days, and the temperature was rising. Air conditioning, WiFi and watermelon became the daily routine. Some people say that my life was given by the air conditioner. But there are two sides to everything. It is also risky to rely on air conditioning for life. Diseases caused by air conditioning, commonly known as “air conditioning disease.”.

air conditioning disease, also known as air conditioning syndrome, occurs in all ages, especially infants, the elderly and people with poor physical resistance. It is mainly caused by dry and non circulating air, cold stimulation and microorganism breeding. Strictly speaking, air conditioning disease is not a disease, but a series of diseases. Among them, the most common is upper respiratory tract infection, with fever, headache, dizziness, cough, expectoration and other symptoms; it can also cause gastrointestinal diseases, such as nausea, vomiting, diarrhea and loss of appetite; some older patients will have cervical and joint pain. Many allergic rhinitis and asthma patients in the air conditioning environment attack frequency increased.

in addition to the above common diseases, the diseases caused by air conditioning are particularly noteworthy, namely “air conditioning lung”. “Air conditioning lung” actually refers to Legionella pneumonia, the culprit is Legionella. Legionella is a special pathogen, which is aerobic gram-negative bacilli. Legionella is also known as atypical pathogen. Legionella pneumonia is one of the most serious cases of atypical pneumonia. The mortality rate without effective treatment is as high as 45%. At present, there is no evidence of human to human transmission.

pregnant women, the elderly and the people with low immune function were the high incidence population of Legionella pneumonia. The overall male was more than the female, and the incidence was more in late summer and early autumn. Legionella is the most suitable for living in the water between 40 ℃ and 45 ℃. It is often inhaled by water supply system, air conditioning and atomization inhalation, causing respiratory tract infection and small outbreak.

the initial stage of Legionella pneumonia is similar to upper respiratory tract infection, characterized by chills, fever, fatigue, weakness, and myalgia. A large number of patients often have painless diarrhea, watery stool, or nausea, vomiting and other symptoms. Some will be in 2-10 days after the incubation period of sudden onset, high fever, cough, chest pain, expectoration of blood. Progressive dyspnea may occur when the progression is rapid. Nervous system symptoms are common, such as mental disorders, headache, disorientation, and can also cause endocarditis, myocarditis, and even shock.

Legionella pneumonia accounted for 1% ~ 8% of the community-acquired pneumonia requiring hospitalization. In patients with Legionella pneumonia, blood routine examination showed leukocytosis, nuclear left shift and lymphocyte decrease; most patients had hyponatremia and hypophosphatemia; urine routine examination showed mild hematuria and proteinuria; biochemical examination showed abnormal liver function. Legionella infection should be suspected when pneumonia is accompanied by encephalopathy, hematuria, abnormal liver function and hyponatremia. Blood culture, sputum culture and chest CT examination are also important basis for diagnosis.

in the treatment of Legionella pneumonia, erythromycin, roxithromycin, clarithromycin, azithromycin and other macrolide drugs are preferred, and the third and fourth generation quinolones, such as levofloxacin and moxifloxacin, can also be selected.

to reduce the occurrence of air conditioning diseases, the main thing is to prevent them. Before using air conditioners every year, we must carry out professional cleaning on air conditioners. Don’t turn on the air conditioner 24 hours. Remember to open the window sooner or later. Drink more water in the air conditioning room to keep the respiratory tract moist. Cai Shaofen stopped pregnancy for the first time. The 4 indexes on the B-ultrasound sheet in the early pregnancy were used to see whether the fetal development was good or not