Multicenter Epidemiologic Study of Severe Community Acquired Pneumonia in China

Study Overview
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Brief Summary
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This study is aimed to understand the clinical characteristics, etiology and resistance phenotype of major pathogens of SCAP in China through multicenter and prospective investigation. Thus to provide epidemiological basis for improving the SCAP diagnosis and treatment protocol suitable for China.

Detailed Description
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During the study period, all patients who are diagnosed with SCAP and meet the inclusion criteria in the participating unit should be enrolled in the study . At the end of the trial, each participating unit should complete at least 20 qualified cases, and all participating units should have a total of more than 300 qualified cases. Learn about the etiology of SCAP in China. Grasp the resistance phenotype and molecular epidemiology of major pathogens of SCAP in China. Know the important clinical characteristics of SCAP in China, including age, basic diseases, length of hospital stay, length of stay in ICU, duration of mechanical ventilation, clinical manifestations, imaging findings, complications, mortality, etc. Analyze and clarify the clinical risk factors of affecting SCAP mortality. Understand the current situation of antibiotic treatment of SCAP in China.

Official Title
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Multicenter Epidemiologic Study of Severe Community Acquired Pneumonia in China

Conditions
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Community-acquired Pneumonia

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age >18 yeas; Diagnosis of CAP according to the diagnosis and treatment of community-acquired pneumonia in adults: 2016 clinical practice guidelines by the Chinese Thoracic Society, Chinese Medical Association. Exclusion Criteria: Bronchiectasis; Active tuberculosis; Aspiration pneumonia or obstructive pneumonia; Hospitalized in 2 weeks; Hospitalized or ventilated ≥5 days; Severe immunosuppression patients; Irregular follow-up and lost follow-up; Withdraw from the study for any reason.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| SCAP groups<br>all the SCAP patients who meet the inclusion criteria | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Microbiological profile of lower respiratory tract specimens | Record the microbiological profile of lower respiratory tract specimens, including sputum, nasopharyngeal swabs, tracheobronchial aspirates and BAL fluid. | Day 0 of the study | 
| Microbiological profile of urine specimens | Record the microbiological profile of urine specimens, including all the bacteria explored,especially legionella or streptoccus pneumonia. | Day 0 of the study | 
| Microbiological profile of serum specimens | Record the microbiological profile of serum specimens , including all the bacteria explored, especially legionella, mycoplasma, chlamydia. | Day 0,14 days or 21 days of the study | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| General conditions of the participants | Record the general conditions of the participants when included in the study ,such as demographic , clinical symptoms and signs of the participants, legionella contact history , enrollment date, ICU admitted condition, comorbidities, prior antibiotic treatment and so on. | Day 0 of the study | 
| Inflammatory Parameters | Record the levels of WBC, CRP, PCT of the participants. | Day 0, 3 days of the study, and until the end of the study(approximately 1 year). | 
| Arterial Blood Gas analysis of the participants | Record the arterial Blood Gas analysis(pH,PO2,PCO2 etc.) when included in the study. | Day 0 of the study | 
| Chest Image of the participants | Record the chest radiograph of the participants when included in the study. | Day 0 of the study | 
| Pneumonia Severity Index of the participants | Record the pneumonia severity index of the participants according to the PSI scoring system,which has been used to decide whether patients with pneumonia can be treated as outpatients or as (hospitalized) inpatients. | Day 0 of the study | 
| CURB-65 Score of the participants | Assessment of consciousness, urea, respiratory rate, BP, and age 65 years score of the participants(Confusion-1,BUN>7mmol/l-1,Respiratory rate≥30-1，SBP<90mmHg,DBP≤60mmHg-1,Age≥65-1).The risk of death at 30 days increases as the score increases:0-0.6%,1-2.7%,2-6.8%,3-14.0%,4-27.8%,5-27.8%. | Day 0 of the study | 
| Prognosis of the SCAP participants | Record the prognosis(cure,improvement,invalid,recrudesce,death) of the participants through the study completion. | up to 3 days of the study and until the end of the study(approximately 1 year). | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Community Acquired Pneumonia, Epidemiology, Multicenter study