Nucleated red blood cells in critically ill cats

Area of Science:

• Veterinary Medicine
• Hematology
• Critical Care

Background:

• Nucleated red blood cells (NRBCs) are immature red blood cells normally found in bone marrow.
• Their presence in peripheral blood can indicate significant physiological stress or disease.
• Understanding the prognostic value of NRBCs in critically ill animals is crucial for clinical decision-making.

Purpose of the Study:

• To investigate the presence and prognostic significance of nucleated red blood cells (NRBCs) in the circulation of critically ill cats.
• To determine if NRBC counts correlate with disease severity or survival outcomes in this population.

Main Methods:

• Prospective inclusion of critically ill cats meeting specific criteria (SIRS or severe condition).
• Blood collection for hematological parameters, including manual NRBC counts (relative and absolute).
• Correlation analysis between NRBC counts, white blood cell counts, and 28-day survival outcomes.

Main Results:

• NRBCs were detected in 25% of critically ill cats, with metarubricytes being the most common type.
• A positive correlation was observed between absolute NRBC count and corrected white blood cell count.
• Mortality rates did not significantly differ between NRBC-positive and NRBC-negative cats, and NRBC count did not predict survival.

Conclusions:

• Nucleated red blood cells can be present in the peripheral blood of critically ill cats.
• The occurrence of NRBCs in this study did not serve as a prognostic indicator for survival.
• Further research may explore specific conditions or earlier time points for NRBC evaluation.