Samenvatting
De kern
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Een C-reactieve proteïnemeting heeft naast de anamnese en het lichamelijk onderzoek een kleine toegevoegde diagnostische waarde.
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Het grootste deel van de groep patiënten bij wie de huisarts een CRP-sneltest (laat) verricht(en), voldoet niet aan de criteria voor tests van de NHG-Standaard.
Inleiding
Toegevoegde diagnostische waarde van CRP
Discriminatie
Risicoclassificatie
Voorspeld risico op pneunomie | Geobserveerde pneumonie (op X-thorax) | |||
---|---|---|---|---|
Ja | Nee | Totaal | ||
Laag < 2,5% | 4* | 244* | 248 | |
Basismodel (zonder CRP) | Intermediair 2,5 tot 20% | 44 | 513 | 557 |
Hoog > 20% | 82 | 113 | 195 | |
Totaal | 130 | 870 | 1000 | |
Laag < 2,5% | 4 | 313 | 317 | |
Uitgebreid model (met CRP) | Intermediair 2,5 tot 20% | 35 | 470 | 505 |
Hoog > 20% | 91 | 87 | 178 | |
Totaal | 130 | 870 | 1000 |
Conclusie op basis van risicoclassificatie en discriminatie
Effect CRP-sneltest op praktijk
De NHG-Standaard en testindicatie
De NHG-Standaard en antibiotica
Kans op vertekening van resultaten
Conclusie
Literatuur
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