CRP and congestive heart failure: Investigating the characteristics of its pathogens is helpful for physicians to accurately select antimicrobial agents, improve the therapeutic effect and reduce the burden on patients.2,3 It has been reported in previous studies that some commonly used laboratory indicators, such as C-reactive protein (CRP) and procalcitonin (PCT), have been used in the clinical diagnosis and prognosis of pulmonary infection in patients with CHF.