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A A Bobylev1, S A Rachina, S N Avdeev

  • 1Smolensk State Medical University.. fake@neicon.ru.

Kardiologiia
|March 12, 2019
PubMed
Summary

Measuring serum C-reactive protein (CRP) for suspected community-acquired pneumonia (CAP) in heart failure (CHF) patients reduced antibiotic use without worsening outcomes. This diagnostic algorithm ensures appropriate antibacterial therapy (ABT) administration.

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Area of Science:

  • Clinical Medicine
  • Infectious Diseases
  • Cardiology

Background:

  • Community-acquired pneumonia (CAP) and chronic heart failure (CHF) frequently coexist in hospitalized patients.
  • Appropriate antibacterial therapy (ABT) is crucial, but overtreatment can lead to resistance and adverse effects.
  • Serum C-reactive protein (CRP) is a biomarker for inflammation, potentially aiding in ABT decisions.

Purpose of the Study:

  • To evaluate a diagnostic algorithm using serum CRP for ABT administration in CAP patients with CHF.
  • To determine if this CRP-guided approach influences disease outcomes compared to standard diagnostics.
  • To assess the non-inferiority of the CRP-based algorithm in managing suspected non-severe CAP in CHF patients.

Main Methods:

  • A randomized, prospective, noninferiority study involving 160 adult patients with functional class II-IV CHF and suspected non-severe CAP.
  • Patients were assigned to either CRP measurement for ABT guidance (Group 1) or routine diagnostics (Group 2).
  • ABT was administered in Group 1 only if serum CRP exceeded 28.5 mg/L; Group 2 received standard treatment.

Main Results:

  • Clinical success rates were comparable between groups (92.1% vs. 90.8%).
  • Systemic ABT was administered less frequently in the CRP-guided group (67.1%) compared to the standard group (100%).
  • No significant differences were observed in early clinical response, ICU admissions, complications, readmissions, or mortality rates at various time points.

Conclusions:

  • The additional measurement of serum CRP in patients with CHF and suspected non-severe CAP effectively reduced systemic ABT administration.
  • This CRP-guided diagnostic algorithm did not negatively impact clinical outcomes or prognosis.
  • The findings support the use of CRP as a biomarker to optimize ABT decisions in this specific patient population.

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