Symptomatic treatment of fever. When the temperature is higher than 38.5 ℃, ibuprofen can be used for antipyretic (oral, 0.2 g per time, it can be used every 4–6 h in continuous fever, but no more than 4 times in 24 h), and the temperature below 38 ℃ is acceptable. Much lower body temperature is not conducive to antiviral treatment.
Nutrition support treatment. Inpatients are screened for nutrition risk based on the NRS2002 score when they are admitted to the hospital. The recommended plan for patients with different nutrition risk scores are as follows:
First, if the total score is < 3 points, it is recommended to eat protein-rich foods (such as eggs, fish, lean meat, dairy products) and carbohydrate-containing diets. The supposed ideal energy intake is 25–30 kcal / (kg∙d) and the protein mass are 1.5 g / (kg∙d).
Second, if the total score is ≥3 points, the patient should be given nutritional support as early as possible. It is recommended to increase protein intake by oral nutrition supplement, 2–3 times/day (≥ 18 g protein/time). In order to reach the mount of 18 g protein/time, protein powder can be added on the basis of standard whole protein preparations. Enteral nutrition tube should to be placed when the patient cannot intake supplemental nutrition by oral routine.
Reduce the incidence of stress ulcers and gastrointestinal bleeding. Use H2 receptor antagonists or proton pump inhibitors in patients with gastrointestinal bleeding risk factors. The risk factors for gastrointestinal bleeding include mechanical ventilation ≥48 h, coagulation dysfunction, renal replacement therapy, liver disease, various complications, and a higher score of organ failure.
Reduce the secretion of lung glands and improve the respiratory function. For patients with dyspnea, cough, wheeze, and respiratory distress syndrome due to the increased respiratory gland secretion, it is recommended to use selective (M1, M3) receptor anticholinergic drugs to reduce the secretion, relax the smooth muscle in airway, relieve airway spasm and improve the pulmonary ventilation.
Reduce the incidence of venous embolism. Evaluate the risk of venous embolism in patients and use low-molecular-weight heparin or heparin in high-risk patients without contraindications.