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Pleural Fluid and Serum Procalcitonin in Patients With Parapneumonic Pleural Effusion

This study has been completed.
Information provided by (Responsible Party):
Chang Gung Memorial Hospital Identifier:
First received: March 25, 2008
Last updated: February 27, 2013
Last verified: March 2008

Key words : serum, pleural effusion, procalcitonin, pneumonia Pneumonia is the common cause of pleural effusion (ranged 2nd) and bacterial infection is the main etiology of pneumonia. Procalcitonin, the prohormone of calcitonin, is a 116 amino-acid protein produced by C-cell of the thyroid gland. During severe infection, procalcitonin is probably produced by extra-thyroid tissues and the concentration increased rapidly in bacterial infection but remains low in viral infections. However, the exact origin and pathophysiological role of procalcitonin during sepsis is not clear and it is not a marker of infection as such, since localized infections or infections with no systemic manifestation cause a little if any increase in procalcitonin levels. This study will focus on assessing the value of procalcitonin in pleural effusion for diagnosis, severity and prognosis among community-acquired pneumonia with pleural effusion, such as in serum. 100 patients with clinical pneumonia infection score over six points diagnosed of community-acquired pneumonia and proved to have pleural effusion by chest sonography on admission will be studied prospectively. Serum and effusion procalcitonin levels will be measured initially and 3 days later after medical therapy. Bacterial pneumonia will be identified if bacteria was cultured from any one of the three kinds of specimen, including blood, pleural effusion or bronchoalveolar lavage. Then we will divide one hundred of patients into bacterial or non-bacterial groups. Finally, we will analyze demographic and procalcitonin data of serum and pleural effusion between these two groups and compare the difference between the severe or mild and response or non-response bacterial community-acquired pneumonia statistically.

The aim of the study will be to verify whether procalcitonin levels measured in the serum and pleural effusion could serve as a predictor for bacterial community-acquired pneumonia with pleural effusion and the different levels will also be indicative of severity and prognosis. We hope that the predictor from pleural effusion will be more sensitive or specific than that from serum and could be detectable in localized bacterial infection.

Community Acquired Pneumonia

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Diagnostic and Prognostic Values of Pleural Fluid Procalcitonin in Parapneumonic Pleural Effusion

Resource links provided by NLM:

Further study details as provided by Chang Gung Memorial Hospital:

Primary Outcome Measures:
  • treatment response [ Time Frame: 28 days ]

Biospecimen Retention:   Samples Without DNA
serum,pleural fluid

Enrollment: 150
Study Start Date: July 2005
Study Completion Date: July 2009
Primary Completion Date: July 2009 (Final data collection date for primary outcome measure)
patients with parapneumonic pleural effusion due to community acquired pneumonia
patients with pleural effusion of other etiologies

Detailed Description:
In this study, the first goal will be to determine the sensitivity, specificity, and predictive value of serum and pleural effusion PCT level in CAP with pleural effusion. The second goal will be to decide an appropriate value in serum or pleural effusion to assess as an index of severity and prognosis in bacterial CAP with pleural effusion.

Ages Eligible for Study:   17 Years to 80 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Patients from the out-patient-department in division of pulmonary and critical care medicine and the department of emergency medicine at Chang Gung Memorial Hospital, Kaohsiung.

Inclusion Criteria:

  • A consecutive series of patients (17 years or older) who present to our hospital with suspected CAP with pleural effusion in the planning duration will be studied. All study cases had not received systemic or topical antimicrobial therapy during the 3 days before the study and they had never smoked at least one cigarette per day for 1 year. A case will be enrolled subsequently by the diagnosis of CAP with pleural effusion from clinical pneumonia infection score (CPIS) and chest sonography.

Exclusion Criteria:

  • Patients with known thyroid disease or small cell lung cancer will be excluded.
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Please refer to this study by its identifier: NCT00646490

Chang Gung Memorial Hospital, Kaohsiung
Kaohsiung, Taiwan, 833
Sponsors and Collaborators
Chang Gung Memorial Hospital
Study Chair: Meng-Chih Lin, MD Chang Gung Memorial Hospital
  More Information

Responsible Party: Chang Gung Memorial Hospital Identifier: NCT00646490     History of Changes
Other Study ID Numbers: CMRPG840401
Study First Received: March 25, 2008
Last Updated: February 27, 2013

Keywords provided by Chang Gung Memorial Hospital:
serum, pleural effusion, procalcitonin, pneumonia

Additional relevant MeSH terms:
Pleural Effusion
Lung Diseases
Respiratory Tract Diseases
Respiratory Tract Infections
Pleural Diseases processed this record on March 27, 2017