Role of Calcitonin Peptide Precursor and C Reactive Protein in Excluding Associated Co-infection in Patients With Viral Pneumonia Admitted to ICU

Authors

  • Abdulmabod omar Clinical Pathology Department , Al Azhar university, Egypt
  • Mohammad AbdElhameed Alwaseef Department of clinical pathology, Faculty of medicine, Al Azhar university, Cairo, Egypt
  • Ahmed M Ewis Department of chest disease, Faculty of medicine, Al Azhar university, Cairo, Egypt
  • Ibrahim H. Youssef Department of Chest Diseases, Faculty of Medicine, Al-Azhar University,Cairo , Egypt
  • Muhammad Abd Elhameed Khedr 6Department of Clinical Pathology, Faculty of Medicine, Al Azhar University, Cairo, Egypt
  • Ahmed Gamal Salah Elsawy Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
  • Salwa Rashad Aly Said Department of Internal Medicine, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
  • Ali Fawzy Ali Alhangor Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
  • Wagenat E Ali Department of Internal Medicine, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
  • Ahmed Mohamed abdelsamad Department of Chest Diseases, Faculty of Medicine, Ain Shams University, Cairo, Egypt
  • Asmaa A. Attia Department of Internal Medicine, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
  • Mostafa Mohamad Elsayed Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
  • Zeinab Adawy Department of Chest Diseases, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
  • Laila A Ahmed Department of Internal Medicine, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
  • Hany Kamal Ahmed Mahrose Clinical Chemistry Department, Theodor Bilharz Research Institute, Giza, Egypt
  • Mahmoud Mohammed Mohammed Metwally Department of Clinical Pathology, Faculty of Medicine, Al Azhar University, Cairo, Egypt
  • Bassam Abdellatif Mahmoud Elsayed Department of Chest Diseases, Faculty of Medicine, Al Azhar University, Cairo, Egypt
  • Hatem Mohamed Newishy Medical Microbiology and lmmunology Department, Faculty of Medicine, Al- Azhar University, Cairo, Egypt
  • Enas Elsebaee Elsaid Radwan Department of Clinical Pathology, Faculty of Medicine for Girls, Al Azhar University, Cairo, Egypt
  • Ahmed Abdelhameed Abozeed Department of Clinical Pathology, Faculty of Medicine, Al Azhar University, Cairo, Egypt
  • Mohammed Abdulgadir Ageel Anesthesiology and Critical Care, Department of Surgery - Faculty of Medicine, Jazan University, KSA
  • Naema R hussein Department of Clinical Pathology, Faculty of Medicine for Girls, Al Azhar University, Cairo, Egypt
  • Ibrahim Fadl Mahmoud Department of Anesthesiology, Intensive Care and Pain Medicine, Damietta Faculty of Medicine, Al-Azhar University, Egypt
  • Neazy Abdelmokhles Abdelmottaleb Department of Anesthesiology, Intensive Care and Pain Medicine, Damietta Faculty of Medicine, Al-Azhar University, Egypt

Keywords:

Calcitonin Peptide Precursor, Procalcitonin, C Reactive Protein, Coinfection in Patients, Viral Pneumonia, ICU

Abstract

Background: Bacterial infection and a non-infectious inflammatory response require a refined distinction for clinical reasoning to be effective. [Calcitonin Peptide Precursor - Procalcitonin (PCT)] and C-reactive protein (CRP) have received considerable attention as inflammatory markers; however, the extent of their competitive diagnostic value, especially in the presence or absence of co-infections, remains fully explored. Methods: This retrospective observational study took account of PCT and CRP levels in 100 patients, fifty of whom had co-infections. Data were processed through non-parametric tests, including the Wilcoxon Signed-Rank Test within groups and the Mann-Whitney U Test across groups. Results: The Wilcoxon Signed-Ranks Test confirmed substantial decreases in PCT and CRP levels post-infection (Z = -6.125, p = .000 and Z = -6.154, p = .000, respectively), signifying the scale of their change. The Mann-Whitney U Test also confirmed the relevance of the investigated biomarkers, as within the group of patients with active infection, both PCT and CRP were significantly raised (PCT: U = 22.000, p = .000; CRP: U = .000, p = .000). The strength of the association between the biomarkers was measured using Spearman’s correlation. Conclusion: Group comparisons demonstrated significant reductions in PCT and CRP from initial to follow-up measurements. A comparison between the groups showed that the co-infection group had significantly higher levels of both PCT and CRP. Weak statistically non-significant correlations were observed between PCT and CRP. PCT and CRP levels were significantly higher in co-infected patients, indicating that these markers may be useful in cognitively diagnosing and monitoring infections. Additional studies are necessary to formulate appropriate diagnostic frameworks.

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Published

2025-06-08

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Original Article