2023
Nonutility of procalcitonin for diagnosing bacterial pneumonia in patients with severe COVID-19
Cohen A, Glick L, Lee S, Kunitomo Y, Tsang D, Pitafi S, Toro P, Ristic N, Zhang E, Carey G, Datta R, Dela Cruz C, Gautam S. Nonutility of procalcitonin for diagnosing bacterial pneumonia in patients with severe COVID-19. European Clinical Respiratory Journal 2023, 10: 2174640. PMID: 36815942, PMCID: PMC9930745, DOI: 10.1080/20018525.2023.2174640.Peer-Reviewed Original ResearchSevere COVID-19Bacterial superinfectionBacterial pneumoniaCOVID-19Lower respiratory culturesSuperimposed bacterial pneumoniaUtility of procalcitoninProcalcitonin measurementImmune biomarkersClinical resemblanceRespiratory culturesImmunomodulatory agentsProcalcitoninPatientsBacterial infectionsSuperinfectionCurve analysisSignificant riskCharacteristic curvePneumoniaTime of cultureDiagnosisInfectionBiomarkers
2020
Severe respiratory viral infection induces procalcitonin in the absence of bacterial pneumonia
Gautam S, Cohen AJ, Stahl Y, Toro P, Young GM, Datta R, Yan X, Ristic NT, Bermejo SD, Sharma L, Restrepo M, Dela Cruz CS. Severe respiratory viral infection induces procalcitonin in the absence of bacterial pneumonia. Thorax 2020, 75: 974-981. PMID: 32826284, DOI: 10.1136/thoraxjnl-2020-214896.Peer-Reviewed Original ResearchConceptsPure viral infectionBacterial coinfectionViral infectionInfluenza infectionSevere respiratory viral infectionsAbility of procalcitoninRetrospective cohort studyViral respiratory infectionsRespiratory viral infectionsMarker of severityRespiratory viral illnessSevere viral infectionsSpecificity of procalcitoninCharacteristic curve analysisCellular modelHigher procalcitoninProcalcitonin expressionElevated procalcitoninCohort studyViral illnessRespiratory infectionsAntibiotic administrationBacterial pneumoniaSevere diseaseProcalcitonin