770 Quick Determination Of C- Reactive Protein In The Follow Up Of Upper Respiratory Tract Infections

Conference: 
Author(s): 
Manfred Maier, Medical University of Vienna
Heide Lingard - Medical University of Vienna
Text: 
Oral Communication
Background and aim:
Although the majority of infections of the upper respiratory tract (URTI) are caused by viruses, their course might be complicated by bacterial superinfection. Therefore, we aimed to assess the value of near patient determination of CRP values - a suitable method for detection of bacterial infections - during the initial and follow up treatment of URTI´s.
Methods:
In patients with URTI recruited from 30 GP-practices the CRP value was determined using a bedside test. Values of 30 units (mg) or higher were considered to be an indication of bacterial involvement; all patients were advised to return to the office for a second determination of CRP within 3-5 days after the first consultation.
Results:
Among the 506 patients included, 73.1% exhibited a CRP 1 value below the limit at their first visit and were considered to suffer from URTI of viral origin. During follow up the rate of bacterial superinfection as assessed by determination of CRP was 8.1%.
Conclusion:
Our study confirms that the determination of near patient CRP is useful to initially differentiate URTI's of bacterial or viral origin. During follow up, this method allows to identify patients with bacterial superinfections; the rate of bacterial superinfection is surprisingly low. These observations might help to reduce unnecessary antibiotic prescriptions for URTI´s and to slow down the increase of antibiotic resistance.
Literature: 
770
QUICK DETERMINATION OF C- REACTIVE PROTEIN IN THE FOLLOW UP OF UPPER RESPIRATORY TRACT INFECTIONS