Page 100 - Rule Outs in Small Animal Medicine, Problem-oriented Assessment of Problems in Physical Examination and Clinical Pathology, 2nd Edition

Neurology Neurology
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Monoparesis
Altered level of
consciousness

Hindlimb Forelimb

LMN UMN LMN Intracranial lesion Metabolic/ Apparently altered level
monoparesis monoparesis monoparesis (forebrain, brainstem) toxic cause â Seizures p. 94 of conciousness

Lesion of the Unilateral
peripheral lesion of the Unilateral Lesion of the Lesion of the Lesion of the
nerves spinal cord lesion of the radial nerve spinal cord
outside the L4–S3 spinal cord or associated brachial plexus/ (C6–T2 grey – Meningoencephalitis – Hepatoencephalo- – Chronic pain
nerve roots
vertebral or the cauda T3–L3 muscles matter) – Neoplasia pathy – Fever
canal equina – Craniocerebral – Hypoglycaemia – Hyperthermia
trauma – Hypoxia, anaemia – Hypotension
– Increased intracranial – Hyperosmolarity
– Aortic – Lateral – Lateral – Trauma – Brachial – Spinal pressure – Uraemia
thromboem- inter- inter- (e.g. puncture, plexus cord – Haemorrhage/ – Hypothyroidism
bolism vertebral vertebral compression, avulsion infarction infarction – Narcotics/sedatives
– Injection disc disc gunshot) – Neoplasia – Neoplasia – Hydrocephalus – Antiseizure drugs
– Cognitive dysfunction
injury herniation herniation (e.g. nerve
(sciatic nerve) – Spinal cord – Spinal cord sheath
– Trauma with infarction infarction tumour)
neurapraxia – Neoplasia – Neoplasia – Lateral
of the sciatic – Disco- spinal disc
nerve (e.g. spondylitis herniation
pelvic fracture) – Neuritis

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