Detailed Veterinary Neurology Study Notes

Three Phases of Seizure Activity: Preictal, Ictal, Postictal
- Preictal Phase: Duration ranges from seconds to hours before a seizure starts.
- Ictal Phase: The phase during which the seizure occurs.
- Postictal Phase: The recovery period after the seizure ends. Duration and effects vary.

Criteria for Initiating Antiepileptic Drug (AED) Therapy:
- Duration of seizure activity greater than three to five minutes (e.g. grand mal seizure).
- Defined as "cluster seizures" if the patient experiences more than three seizures in 30 days.
- Consider patients over seven years old having repeated seizures as high risk for therapy initiation.

Three Types of Myoclonus:
- Side to side myoclonus
- Up and down myoclonus
- Rotary myoclonus (referred to as "revolting" cycle)

Fast Phase of Nystagmus: Defined as the quick corrective phase of eye movement.
Vestibular Treatment for Nystagmus: Common treatments include medications such as antihistamines (e.g., Meclizine) for motion sickness. High levels of disturbance may lead to options such as euthanasia in severe cases.
Idiopathic Vestibular Disease: Typically resolves within one week.
Epley Maneuver: A repositioning maneuver for treatment of certain types of vertigo or vestibular disease, beneficial for dogs and some humans. Recommended for cases reported as idiopathic.

Types of Spinal Cord Injuries:
- Acute rupture or trauma can lead to immediate pain, paresis, or paralysis.
- Paresis vs. Paralysis:
- Paresis: Partial weakness
- Paralysis: Complete lack of movement or feeling.
Prevention Strategies:
- Core strengthening exercises and client education on limiting stress on the spine (e.g. preventing dachshunds from jumping).
- Exercise regimens focused on abdominal and lower back muscle strengthening.

Neurological Clinical Signs: Pain, paresis, paralysis, changes in bladder function.
Deep Pain Sensation: Absence of deep pain often indicates a worse prognosis for regaining function.
Client Education on Bladder Maintenance: Critical for managing lower motor neuron lesions to prevent rupture and urinary retention, which may damage kidneys and increase UTI risk.

Disk Anatomy and Mechanics: Herniated disks apply pressure on the spinal cord and nerves, leading to significant functional impairment.
Diagnostic Techniques:
- Myelogram: Use of radiopaque dye to visualize spinal cord compression through radiographic imaging.
- X-rays: Can show compression but are not conclusive, further requiring MRI for accurate diagnosis.

Degenerative Myelopathy (DM): Inherited condition seen primarily in German Shepherds and similar breeds. Symptoms include progressive hind end weakness and potential paralysis.
- Management Options: Supportive care through exercise, physical therapy, and in some trials, amino acid supplements are currently in discussion.

Notable Conditions Associated with Paraplegia:
- Wobblers syndrome: Common in Dobermans and Great Danes. Requires surgical intervention in severe cases.
- Euthanasia Considerations: When managing chronic neurological diseases, owners must consider quality of life and treatment costs versus benefits.

Neurological Evaluations: Involves recognizing various reflexes; when pinching the tail, dogs often initiate motor functions even when paralyzed.
Assisted Mobility: Use of harnesses that alleviate pressure on limbs during accidental falls.
- Simple exercises are recommended for strengthening and promoting mobility recovery, focusing on proprioception and joint stability.

Owner Involvement: Essential for rehabilitation success. Dietary management, exercise routines, and scheduled vet visits are vital.
Emotional Support for Owners: Training in familiar signs of distress or deterioration in their dogs is crucial for making informed treatment decisions.