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600   PART 9   CAT WITH SIGNS OF GASTROINTESTINAL TRACT DISEASE


          Differential diagnosis                        Prognosis

          Portosystemic shunt – intermittent, often associated  Grave.
          with eating. Lack of rapid progression of signs over
          7–10 days resulting in death. Confirm with post-pran-  FELINE PANLEUKOPENIA (PARVO VIRUS,
          dial serum bile acids.
                                                        FELINE ENTERITIS, FELINE DISTEMPER)
          Pyrethrin and pyrethroid toxicity – no behavior
          changes and history of exposure and serum      Classical signs
          cholinesterase levels (OP) will confirm diagnosis.
                                                         ● Vomiting, diarrhea.
          Feline spongioform encephalopathy also has combi-  ● Lethargy.
          nation of neurological signs and hypersalivation.  ● Severe dehydration.
          Histopathology differentiates.                 ● High mortality.


          Treatment
                                                        Clinical signs
          No treatment should be attempted. Almost uniformly
          fatal.                                        Usually in young (2–6 months) kittens.
          Follow official guides for management of suspected  Acute-onset vomiting, often severe diarrhea.
          rabies case.
                                                        Fever in early stages of disease.
                                                        Rapid dehydration.
          Prognosis
                                                        Severe depression.
          Always grave.
                                                        Although not generally a feature of feline panleukope-
                                                        nia, continuous ptyalism has been recorded as the pre-
          FELINE SPONGIOFORM                            dominate clinical sign in kitten with confirmed
          ENCEPHALOPATHY (FSE)
                                                        panleukopenia at post-mortem examination.
           Classical signs
                                                        Diagnosis
           ● CNS signs, progressive.
           ● Hypersalivation.                           No vaccination history, recent exposure to virus.
                                                        Panleukopenia is the most consistent clinical finding.
                                                        Complete blood counts show leukocyte counts between
          Clinical signs
                                                        500 and 3000 cells per microliter during the acute
          Progressive neurological signs including ataxia (espe-  phase of the disease.
          cially pelvic limbs), behavioral changes, hyperesthesia,
                                                        Canine parvovirus antigen fecal immunoassay will
          head tremor, muscle fasciculations.
                                                        detect feline parvovirus antigen in feces of affected
          Ptyalism.                                     cats.
                                                        Viral isolation from feces or affected tissues.
          Diagnosis
                                                        Histopathology.
          Histopathology shows discrete  vacuolation of gray
          matter throughout CNS.
                                                        Treatment
          Treatment                                     Rehydration, intravenous fluids.
          Supportive only.                              Re-establishment of electrolyte balance.
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