Prognostic indicators for canine monocytic ehrlichiosis

Area of Science:

• Veterinary Medicine
• Infectious Diseases
• Hematology

Background:

• Canine monocytic ehrlichiosis (CME) is a significant tick-borne disease in dogs.
• Identifying prognostic factors is crucial for effective management and treatment strategies.

Purpose of the Study:

• To retrospectively analyze clinical and clinicopathological data of canine monocytic ehrlichiosis (CME) cases.
• To identify reliable prognostic factors for survival in dogs diagnosed with CME.

Main Methods:

• Retrospective study of 40 canine monocytic ehrlichiosis (CME) cases, divided into survivors (n=21) and non-survivors (n=19).
• Comparison of signalment, anamnesis, clinical signs, clinicopathological parameters, and treatment protocols between survivor and non-survivor groups.
• Statistical analysis to determine the predictive value of various parameters for mortality and survival.

Main Results:

• Non-survivors exhibited higher prevalence of pale mucous membranes, bleeding tendencies, and weakness.
• Significantly lower white blood cell (WBC), hematocrit (HCT), and platelet (PLT) counts were observed in non-survivors.
• Severe leucopenia, anemia (PCV < 11.5%), prolonged activated partial thromboplastin time (APTT > 18.25s), and hypokalemia (K < 3.65 mmol/L) were 100% predictive of mortality.
• High WBC counts (> 5.18 x 10(3) microL(-1)), PLT counts (> 89.5 x 10(3) microL(-1)), PCV (> 33.5%), short APTT (< 14.5s), and normal serum potassium (> 4.75 mmol/L) were 100% predictive of survival.

Conclusions:

• Pronounced pancytopenia is a significant risk factor for mortality in canine monocytic ehrlichiosis (CME).
• Specific hematological parameters (WBC, HCT, PLT), APTT, and serum potassium levels serve as powerful and accessible prognostic indicators for CME.
• These easily obtainable and inexpensive indicators can aid veterinarians in treatment decisions and prognosis assessment for dogs with CME.