Analysis of clinical characteristics of severe and critically ill influenza A (HIN1)
10.3760/cma.j.issn.2095-4352.2019.09.019
- VernacularTitle: 重症与危重症甲型H1N1流感的临床特征分析
- Author:
Zhouhua XIE
1
;
Yanrong LIN
;
Yuehua CHEN
Author Information
1. Department of Intensive Care Unit, Nanning Forth People's Hospital, Nanning 530023, Guangxi Zhuang Autonomous Region, China
- Publication Type:Clinical Trail
- Keywords:
Influenza A (H1N1);
Severe;
Critical ill
- From:
Chinese Critical Care Medicine
2019;31(9):1154-1157
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the clinical features, laboratory results, chest CT imaging manifestations and treatments of severe and critical influenza A (H1N1), and to analyze the relationship with the prognosis.
Methods:The clinical data of 54 adult patients with severe and critical H1N1 admitted to the Fourth People's Hospital of Nanning from November 2018 to February 2019 were analyzed retrospectively. Throat swab specimens of the patients were determined for nucleic acid detection of influenza A (H1N1) virus, and all of the patients were confirmed. The gender, age, course of disease, underlying diseases, symptoms, body temperature, hospital stays, chest CT findings and laboratory results were collected, and the treatments and prognosis were recorded.
Results:Of 54 patients, 38 patients were enrolled in severe group, and 16 in critical group. Fever, cough, sputum, shortness of breath and so on could be found in the two groups. The CD4+ T lymphocytes were less than normal reference value (410-1 590/μL) in both groups. The chest CT findings manifestations of severe group were scattered patchy shadows and ground glass appearance, all of them were cured and discharged after antiviral, antibiotics, and oxygen treatment. In critical group, the time in hospital was longer, the disease progresses varied faster, the shortness of breath was more apparent, and a large patch of fuzzy and real change shadows on both lungs could be found from CT findings. Compared with the severe group, creatine kinase (CK), lactic dehydrogenase (LDH), C-reactive protein (CRP) and procalcitonin (PCT) levels in the critical group were increased more significantly [CK (U/L): 704.50 (908.50) vs. 146.00 (220.75), LDH (U/L): 614.50 (492.25) vs. 217.00 (142.75), CRP (mg/L): 85.65 (56.13) vs. 18.80 (50.63), PCT (μg/L): 1.30 (5.00) vs. 0.10 (0.16), all P < 0.01], white blood cells count (WBC) and neutrophil ratio were also increased more significantly [WBC (×109/L): 12.37±7.63 vs. 8.29±3.32, neutrophil ratio: 0.81±0.11 vs. 0.75±0.11] without statistical differences (both P > 0.05). Nine patients in critical group were cured with cure rate of 56.25%. Seven patients died with mortality of 43.75%, including 2 patients with acquired immunodeficiency syndrome (AIDS) and uremia respectively, who had multiple organ failure (MOF) on admission and waive the mechanical ventilation treatment; 3 patients complicated with acute renal failure but abandon hemodialysis; 1 patient with nasopharyngeal carcinoma radiotherapy after operation; and 1 patient with chronic renal failure uremia period combined multiple drug-resistant bacteria infection, and died from MOF finally.
Conclusions:The patients with severe and critical influenza A (H1N1) show fever, cough, dyspnea, and organ dysfunction in varying degrees. Severe patients were mainly pulmonary lesions, while critical patients show MOF such as heart, lung and kidney, and the lesions progressed rapidly. The major cause of death for critical influenza A (H1N1) may be chronic underlying diseases and MOF.
