(Disclaimer: This article is intended for general scientific purposes only. In order to protect the patient’s privacy, the relevant information in the following content has been processed) Abstract: A 71-year-old female patient came to the hospital for consultation after reporting chest pain, chest tightness, and shortness of breath for the past 7 days with no apparent cause, all of which occurred at night and were accompanied by swelling of the lower extremities and nausea, and her discomfort did not subside. After physical examination and ultrasound, the patient was diagnosed with acute pericarditis and was treated with medication to control the disease. Basic information] Female, 71 years old [Type of disease] Acute pericarditis [Hospital] The First Affiliated Hospital of Xi’an Jiaotong University [Date of consultation] June 2022 [Treatment plan] Oral medication (chloramphenicol tablets, cefixime dispersible tablets, aspirin tablets) [Treatment cycle] In-hospital treatment for 7 days, outpatient review after 1 week of hospital discharge [Effect of treatment] Disease is under control, with chest pain, tightness in the chest, shortness of breath, Nausea, double lower extremity swelling symptoms disappeared I. Initial Consultation When I first saw the patient, the patient complained of chest pain, chest tightness, shortness of breath without obvious triggers 7 days ago, the above adverse symptoms are in the nighttime episodes, accompanied by double lower extremity swelling, nausea, did not use their own medication, denied the existence of hypertension, coronary heart disease and other medical history. The patient’s lungs were clear, breath sounds were clear, there was no pleural friction, no dry or wet rales were heard, and there were no abnormalities on physical examination. Color ultrasound showed that there was a large amount of fluid in the pericardium of the patient, with a depth of up to 3.4 cm; electrocardiogram showed that the patient was in sinus rhythm, with an abnormal T-wave, which led to a diagnosis of acute pericarditis, and he was admitted to the hospital for treatment. Treatment Because of the high white blood cell count of 10.79×10^9/L, which suggested the presence of infection, I told the patient that his acute pericarditis needed to be treated with non-steroidal anti-inflammatory drugs in a timely manner, and the patient expressed his willingness to cooperate with the treatment. I first prescribed chloramphenicol tablets and cefixime dispersible tablets, which can effectively control the spread of infection foci in the body and achieve the purpose of anti-inflammatory and bactericidal, because of the patient’s symptoms of chest pain, I also let the patient take aspirin tablets orally, which also has a certain anti-inflammatory effect, which is more conducive to the improvement of the condition. Third, the therapeutic effect After the application of non-steroidal anti-inflammatory drugs for treatment in the hospital, the results of each examination were better than the previous one, and on the 7th day of in-hospital drug treatment, the disease was already under control, and the symptoms of chest pain, tightness in the chest, shortness of breath, nausea, and swelling of the lower limbs of both legs disappeared, and the consciousness was clear, and the mental state was good, and the leukocyte count was 6×10^9/L when rechecking the blood counts, and the values were back to normal, which allowed the The patient was discharged from the hospital. The patient was discharged from the hospital after 1 week of outpatient review, and there was no tendency to relapse. IV. Precautions Seeing the patient’s symptoms of chest pain, chest tightness, shortness of breath, nausea, and swelling of both lower limbs disappeared and he was successfully discharged from the hospital, I felt very relieved in my heart. When discharged from the hospital, I told the patient to take more rest at home and keep a good mood. Diet should be low in salt and fat to help reduce the burden on the heart, and under the premise of ensuring a reasonable nutritional intake, the patient can eat more high protein, high calcium, high calorie and well-digested food, and I also explained to the patient that good dietary and living habits can help promote the improvement of the condition. In addition, after being discharged from the hospital, you still need to take medication for a period of time. At home, if you find that your body has strong adverse symptoms after taking medication, you should stop taking the medication and consult a doctor. When chest pain, chest tightness, shortness of breath and other symptoms occur in the body, most patients think that it is due to overwork or large-scale exercise and ignore it, but if they suffer from acute pericarditis, the above symptoms will also occur, as in this case of 71-year-old female patients, but after systematic treatment, the disease is better controlled. It is recommended to pay more attention to one’s own health, exercise appropriately, and I also advocate regular medical checkups, which are also helpful for early detection of diseases.