Is flu upper respiratory tract symptom light?
summary
Cold is a common pathology in life. Sometimes if you don't pay attention, you will catch it. If you are in good health, you may take some medicine. If you have poor resistance, you need to go to the hospital for a drip. Influenza is one of the most common diseases. The incubation period of influenza is 1-3 days, which can be as short as 6 hours and as long as 4 days. Is flu upper respiratory tract symptom light? Let's talk about it.
Is flu upper respiratory tract symptom light?
1. Typical influenza has acute high fever, chills or chills, headache, body pain, fatigue, loss of appetite and other systemic poisoning symptoms, while respiratory symptoms are mild. A few patients may have nasal congestion, runny nose, photophobia, tears and other eye symptoms. Cough, retrosternal discomfort or burning, dry throat and sore throat were also common. The body temperature can reach 40 ℃, the face is flushed, and the pharynx and outer canthus of conjunctiva are slightly congested. There may be dry rales in the lungs. Fever peaked in more than 1-2 days and subsided in 3-4 days. The respiratory symptoms were more obvious and disappeared in 3-4 days, but fatigue lasted for 1-2 weeks. This type is the most common. The fever of mild patients was no more than 39 ℃, the symptoms were mild, and the course of disease was 2-3 days.
2. Influenza virus pneumonia influenza virus infection can be transformed from simple type to pneumonia type, or directly manifested as pneumonia type. Pneumonia type is caused by influenza virus infection spreading from upper respiratory tract to lower respiratory tract. Primary influenza virus pneumonia is easy to occur in patients with potential lung and heart diseases (especially rheumatic heart disease and left atrioventricular valve stenosis) Pregnant women or people with immunodeficiency status, but as many as half of the cases reported have not yet confirmed the potential disease. After the onset of typical pneumonia, high fever persisted, and dyspnea, cyanosis, cough, foam mucus phlegm or bloody symptoms appeared rapidly. Physical examination showed that the respiratory sounds of both lungs were low and full of wheezing, but there was no sign of consolidation. Chest X-ray showed scattered flocculent shadows on both sides of the lung, spreading from the hilar to the surrounding; Its manifestations are consistent with adult respiratory distress syndrome (ARDS). Patients may die of heart failure or peripheral circulation failure. The course of disease can be as long as 3-4 weeks. Blood gas analysis showed significant hypooxia. Influenza virus can be easily isolated from sputum, and many neutrophils can be seen in sputum smear by Gram staining; However, there was no growth of pathogenic bacteria in sputum and blood culture, and antibacterial treatment was ineffective. The mortality rate could exceed 50%. Influenza often affects the lower respiratory tract in infants and the elderly, especially when it causes pneumonia. About 1 / 4 of the children hospitalized for lower respiratory tract infection are caused by influenza virus. The incidence of influenza pneumonia and bronchitis increased with age. The incidence of influenza pneumonia and bronchitis was 36% in 60-69 years old group and 73% in over 70 years old group. Influenza pneumonia in the elderly often lacks initial symptoms and is easy to be ignored. It is often found that pneumonia is accompanied by severe conditions such as obvious dehydration, acidosis or disturbance of consciousness.
3. Toxic type and gastrointestinal toxic type are very rare. Viral invasion of the nervous system and cardiovascular system causes toxic symptoms. Clinically, there are encephalitis or meningitis symptoms, mainly characterized by high fever and coma. Adults often have delirium. Children can have convulsions, and meningeal irritation sign. The number of cerebrospinal fluid cells can increase slightly. In some cases, the blood pressure may drop or shock due to the disorder of vascular and nervous system or adrenal hemorrhage. Gastrointestinal influenza is common in children, with nausea, vomiting, diarrhea, abdominal pain as the main symptoms, generally 2-3 days to recover.
matters needing attention
The above is some of the introduction of influenza, in life, we all know that the relationship between disease and disease is particularly close, and influenza when we feel sick is on the one hand, on the other hand, we need to pay attention to the complications and nursing. Hope that patients pay attention to this, so as not to delay the disease.
