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Póvoa P, Pitrowsky M, Guerreiro G, Pacheco MB, Salluh JIF. Biomarkers: Are They Useful in Severe Community-Acquired Pneumonia? Semin Respir Crit Care Med 2024; 45:200-206. [PMID: 38196062 DOI: 10.1055/s-0043-1777771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Community acquired pneumonia (CAP) is a prevalent infectious disease often requiring hospitalization, although its diagnosis remains challenging as there is no gold standard test. In severe CAP, clinical and radiologic criteria have poor sensitivity and specificity, and microbiologic documentation is usually delayed and obtained in less than half of sCAP patients. Biomarkers could be an alternative for diagnosis, treatment monitoring and establish resolution. Beyond the existing evidence about biomarkers as an adjunct diagnostic tool, most evidence comes from studies including CAP patients in primary care or emergency departments, and not only sCAP patients. Ideally, biomarkers used in combination with signs, symptoms, and radiological findings can improve clinical judgment to confirm or rule out CAP diagnosis, and may be valuable adjunctive tools for risk stratification, differentiate viral pneumonia and monitoring the course of CAP. While no single biomarker has emerged as an ideal one, CRP and PCT have gathered the most evidence. Overall, biomarkers offer valuable information and can enhance clinical decision-making in the management of CAP, but further research and validation are needed to establish their optimal use and clinical utility.
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Affiliation(s)
- Pedro Póvoa
- NOVA Medical School, Centre for Integrated Research in Health, New University of Lisbon, Lisbon, Portugal
- Research Unit of Clinical Epidemiology, Institute of Clinical Research, University of Southern Denmark, Centre for Clinical Epidemiology, Odense University Hospital, Odense, Denmark
- Department of Intensive Care, São Francisco Xavier Hospital, CHLO, Lisbon, Portugal
| | - Melissa Pitrowsky
- Postgraduate Program of Internal Medicine, Federal University of Rio de Janeiro, (UFRJ), Rio de Janeiro, Brazil
| | - Gonçalo Guerreiro
- Department of Intensive Care, São Francisco Xavier Hospital, CHLO, Lisbon, Portugal
| | - Mariana B Pacheco
- Medical School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
| | - Jorge I F Salluh
- Postgraduate Program of Internal Medicine, Federal University of Rio de Janeiro, (UFRJ), Rio de Janeiro, Brazil
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
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Campani S, Talamonti M, Dall’Ara L, Coloretti I, Gatto I, Biagioni E, Tosi M, Meschiari M, Tonelli R, Clini E, Cossarizza A, Guaraldi G, Mussini C, Sarti M, Trenti T, Girardis M. The Association of Procalcitonin and C-Reactive Protein with Bacterial Infections Acquired during Intensive Care Unit Stay in COVID-19 Critically Ill Patients. Antibiotics (Basel) 2023; 12:1536. [PMID: 37887237 PMCID: PMC10604665 DOI: 10.3390/antibiotics12101536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/22/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
In COVID-19 patients, procalcitonin (PCT) and C-reactive protein (CRP) performance in identifying bacterial infections remains unclear. Our study aimed to evaluate the association of PCT and CRP with secondary infections acquired during ICU stay in critically ill COVID-19 patients. This observational study included adult patients admitted to three COVID-19 intensive care units (ICUs) from February 2020 to May 2022 with respiratory failure caused by SARS-CoV-2 infection and ICU stay ≥ 11 days. The values of PCT and CRP collected on the day of infection diagnosis were compared to those collected on day 11 after ICU admission, the median time for infection occurrence, in patients without secondary infection. The receiver operating characteristic curve (ROC) and multivariate logistic model were used to assess PCT and CRP association with secondary infections. Two hundred and seventy-nine patients were included, of whom 169 (60.6%) developed secondary infection after ICU admission. The PCT and CRP values observed on the day of the infection diagnosis were larger (p < 0.001) than those observed on day 11 after ICU admission in patients without secondary infections. The ROC analysis calculated an AUC of 0.744 (95%CI 0.685-0.803) and 0.754 (95%CI 0.695-0.812) for PCT and CRP, respectively. Multivariate logistic models showed that PCT ≥ 0.16 ng/mL and CRP ≥ 1.35 mg/dL were associated (p < 0.001) with infections acquired during ICU stay. Our results indicated that in COVID-19 patients, PCT and CRP values were associated with infections acquired during the ICU stay and can be used to support, together with clinical signs, rather than predict or rule out, the diagnosis of these infections.
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Affiliation(s)
- Simone Campani
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Marta Talamonti
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Lorenzo Dall’Ara
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Irene Coloretti
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Ilenia Gatto
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Emanuela Biagioni
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Martina Tosi
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
| | - Marianna Meschiari
- Infectious Disease Unit, University Hospital of Modena, 41125 Modena, Italy; (M.M.); (G.G.); (C.M.)
| | - Roberto Tonelli
- Respiratory Disease Unit, University Hospital of Modena, 41125 Modena, Italy; (R.T.); (E.C.)
| | - Enrico Clini
- Respiratory Disease Unit, University Hospital of Modena, 41125 Modena, Italy; (R.T.); (E.C.)
| | - Andrea Cossarizza
- Immunology Laboratory, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Giovanni Guaraldi
- Infectious Disease Unit, University Hospital of Modena, 41125 Modena, Italy; (M.M.); (G.G.); (C.M.)
| | - Cristina Mussini
- Infectious Disease Unit, University Hospital of Modena, 41125 Modena, Italy; (M.M.); (G.G.); (C.M.)
| | - Mario Sarti
- Clinical Microbiology Laboratory, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Tommaso Trenti
- Diagnostic Hematology and Clinical Genomics Laboratory, Department of Laboratory Medicine and Pathology, Local Health Service and University Hospital of Modena, 41124 Modena, Italy;
| | - Massimo Girardis
- Intensive Care Unit, University Hospital of Modena, 41125 Modena, Italy; (S.C.); (M.T.); (L.D.); (I.C.); (I.G.); (E.B.); (M.T.)
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Ceccarelli G, Alessandri F, Migliara G, Baccolini V, Giordano G, Galardo G, Marzuillo C, De Vito C, Russo A, Ciccozzi M, Villari P, Venditti M, Mastroianni CM, Pugliese F, d’Ettorre G. Reduced Reliability of Procalcitonin (PCT) as a Biomarker of Bacterial Superinfection: Concerns about PCT-Driven Antibiotic Stewardship in Critically Ill COVID-19 Patients-Results from a Retrospective Observational Study in Intensive Care Units. J Clin Med 2023; 12:6171. [PMID: 37834815 PMCID: PMC10573961 DOI: 10.3390/jcm12196171] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND The aim of this study was to assess whether procalcitonin levels is a diagnostic tool capable of accurately identifying sepsis and ventilator-associated pneumonia (VAP) even in critically ill COVID-19 patients. METHODS In this retrospective, observational study, all critically ill COVID-19 patients who survived for ≥2 days in a single university hospital and had at least one serum procalcitonin (PCT) value and associated blood culture and/or culture from a lower respiratory tract specimen available were eligible for the study. RESULTS Over the research period, 184 patients were recruited; 67 VAP/BSI occurred, with an incidence rate of 21.82 episodes of VAP/BSI (95% CI: 17.18-27.73) per 1000 patient-days among patients who were included. At the time of a positive microbiological culture, an average PCT level of 1.25-3.2 ng/mL was found. Moreover, also in subjects without positive cultures, PCT was altered in 21.7% of determinations, with an average value of 1.04-5.5 ng/mL. Both PCT and PCT-72 h were not linked to a diagnosis of VAP/BSI in COVID-19 patients, according to the multivariable GEE models (aOR 1.13, 95% CI 0.51-2.52 for PCT; aOR 1.32, 95% CI 0.66-2.64 for PCT-72 h). CONCLUSION Elevated PCT levels might not always indicate bacterial superinfections or coinfections in a severe COVID-19 setting.
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Affiliation(s)
- Giancarlo Ceccarelli
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Francesco Alessandri
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
- Intensive Care Unit, Department of General, Specialistic Surgery, University of Rome Sapienza, 00185 Rome, Italy
| | - Giuseppe Migliara
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Valentina Baccolini
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Giovanni Giordano
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
- Intensive Care Unit, Department of General, Specialistic Surgery, University of Rome Sapienza, 00185 Rome, Italy
| | - Gioacchino Galardo
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
| | - Carolina Marzuillo
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Corrado De Vito
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Alessandro Russo
- Infectious and Tropical Disease Unit, Department of Medical and Surgical Sciences, ‘Magna Graecia’ University of Catanzaro, 88100 Catanzaro, Italy;
| | - Massimo Ciccozzi
- Unit of Medical Statistics and Molecular Epidemiology, University Campus Bio-Medico of Rome, 00128 Rome, Italy;
| | - Paolo Villari
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Mario Venditti
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Claudio M. Mastroianni
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
| | - Francesco Pugliese
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
- Intensive Care Unit, Department of General, Specialistic Surgery, University of Rome Sapienza, 00185 Rome, Italy
| | - Gabriella d’Ettorre
- Hospital Policlinico Umberto I, 00161 Rome, Italy; (G.C.); (G.G.); (G.M.); (V.B.); (G.G.); (M.V.); (C.M.M.); (F.P.); (G.d.)
- Department of Public Health and Infectious Diseases, University of Rome Sapienza, 00185 Rome, Italy; (C.M.); (P.V.)
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