Neuro and Cardio Flashcards
Lesions in the BRAIN STEM and SPINAL CORD cause ipsilateral or contralateral signs?
Brain stem and spinal cord lesions cause IPSILATERAL signs.
Contralateral signs happen where there is a lesion where?
CEREBRAL CORTEX
Which nerve tests the Patellar Reflex?
FEMORAL NERVE
Which nerve tests FLEXOR WITHDRAWAL?
SCIATIC NERVE
Which nerve tests BLADDER AND ANAL TONE?
PUDENAL Nerve
If an animal cross extensor reflex in LATERAL recumbency is it normal or abnormal?
ABNORMAL. It means the patient has UMN signs
Menace response tests nerves….
2 & 7
Pupillary Light Reflex tests nerves…
2 & 3
Hypokalemia causes ______
Ventroflexion
Small, firm, frequently empties, easy to palpate bladder
UMN
What drugs should be used to treat an UMN bladder?
Phenoxybenzamine and Prazosin
Where is the lesion if an UMN bladder is present?
Lesion cranial to L3
Largem flaccid, not frequently expressed because its just filling up bladder.
LMN
What drugs should be used to treat LMN bladder?
Bethanecol and PPA
Where is the lesion if a LMN bladder is present
Lesion caudal to L3
C1- C5
UMN in all 4 legs
C6-T2
LMN in front UMN in rear
T3-L2
Normal in front UMN in rear
L3-S3
Normal in front LMN in rear
Lesion at T1: Miosis(constricted pupil), Ptosis(droppy eyelid), 3rd eyelid prolapse and Enopthalmos(sunken eye) are all clinical signs associated with what?
Horner’s Syndrome Cats with ear issues.
Commonly caused by trauma with LMN signs to one limb.
Peripheral nerve injury
Treatment for peripheral nerve injuries
Glucocorticoids & Physiotherapy. No improvement after 6 mths = amputate
Trauma that abducts(move limb away from midline) front limb.
Brachial Plexus Avulsion Can see Horner’s syndrome. Lesion at T1
A lesion at C8-T1 can cause loss of which reflex?
Panniculus Reflex
Best indicator of complete recovery with Brachial Plexus Avulsion.
Pain = good prognosis
Treatment for Brachial Plexus Avulsion
Protect the limb and physiotherapy. No improvement within 6 months= amputate
Malignant Peripheral Nerve Sheath tumors in the caudal cervical area cause this condition in one limb.
Nerve Root/ Peripheral Nerve Neoplasia
Hyperesthesia(exaggerated sensation) with limb palpation or manipulation.
Root Signature.
How do you make a definitive Dx of a nerve root/peripheral neoplasia?
Histopathology
What is the best treatment for all tumors?
Surgical resection
T/F: recurrence is common with nerve root neoplasia so you have to eventually amputate limb.
TRUE
Most commonly effects large breed dogs, miniature schnauzers and cats in the neck region and is NOT PAINFUL.
Fibrocartilaginous Emboil Hurts when it first happens but not painful after the fact.
Condition that occurs after or during exercise and is non progressive.
Fibrocartilaginous Emboli
T/F: If LMN signs are seen in dogs with FCE, then most don’t improve.
TRUE
Definitive diagnosis for FCE?
MRI
Treatment for FCE
Dexmethasone and physical therapy
Dragging back legs but still have some motion.
Parapesis
No voluntary motor activity
Paraplegia
What condition is characterized by being slowly progressive mostly in German Shepards. Starts with UMN signs then LMN signs(bad). NOT PAINFUL. NO treatment.
Degenerative Myelopathy
How would you diagnose degenerative myelopathy?
Histo
A progressive PAINFUL condition that involves both HIND limbs and is seen in large breed working dogs.
Lumbosacral malarticulation-malformation/ cauda equina
What nerve are effected in lumbosacral malarticulation-malformation/cauda equina?
LMN signs in SCIATIC/PUDENDAL
Pseudohyperreflexia is caused by damage to what nerve.
SCIATIC
How would you treat lumbosacral malformation/ cauda equine?
Dorsal laminectomy but surgery does nothing for incontinence. NSAIDS have poor results.
Diagnostic of choice for lumbosacral/cauda equine.
MRI/CT
Non-chondrodysplatic dogs have ______ replacement with aging.
Fibrocartilage
Chrondrodysplastic breeds have ______replacement with aging.
Hyaline
Acute version of disc prolapse that occurs inchondrodysplastic breeds.
Hansen Type I
Chronic version of disc prolapse that occurs in large breed dogs at T11-L2.
Hansen Type II
How would you diagnose Thoracolumbar Intervertebral Disk Disease?
Myelography
What two drugs should you not give together?
Prednisolone and NSAIDs
What do we grade a patient that has paralysis with NO DEEP PAIN diagnosed with TLIVDD?
Grade 5 . Treat with dorsal hemilaminectomy.
Infection of disc cartilage at the end plates.
Diskospongylitis
What bacteria is the most important cause of discospondylitis?
Staph
What signs would you see with discospondylitis?
Hyperesthesia(exaggerated sensitivity), neuro signs because of spinal cord compression
Definitive diagnose for Diskospondylitis
radiographs but only 4-6 weeks post infection so do culture and histo b/c Ddx is tumors.
Infection of vertebrae
Spondylitis
Hour glass shape neoplasia
Intramedullary
Golf tee sign neoplasia
Intradural-Extramedullary
Most common kind of spinal neoplasia. On side devotion towards lumen. Osteo-, chondro- and fibrosarcomas.
Extradural
Most common tumor primary tumor in the brain of dogs
Meningioma
Most common tumor in the spinal cord of dogs.
Hemangiosarcomas
Extradural lymphosarcomas are usually in what species?
Cats
Best diagnostic tool for localization of a neoplasia in the spinal cord?
MRI/CT
What spinal cord segments are involved in a “tail tug”
L7-S1
Stiff front legs because of lack of inhibitory neurons going from back legs to front legs is termed…
Schiff-Sherrington Occurs with vertebral fractures and laxations.
What is the best dx tool for dx’ing vertebral fractures and laxations?
MRI- so you know exactly where you need to do surgery
Treatment for tail tug
Amputate tail and give phenoxybenzamine
What would you use to tx spinal cord edema?
mannitol
T/F: if injury is older than 4 hours and there is no deep pain then surgery won’t help and there is a grave prognosis
TRUEc
dCondition that occurs via a lesion of C5-C7 in older Dobies and younger Great Danes.
Wobbler’s - Cervical Spondylomyelopathy
Congential heart disease that is commonly seen as a Left-Right shunt that causes ECCENTRIC hypertophy. You can hear a machine/water hammer continuous murmur. Can be fixed by closing off with umbilical type.
Patent Ductus Arteriosis
PDA
What type of shunt in PDA would we see blue MM in the back of the animal i.e the vagina?
Right - Left shunt in PDA
This congential heart disease affects large breed dogs and causes CONCENTRIC hypertrophy.
Using a doppler can tell us the severity of the disease.
Aortic Stenosis
This congential heart disease affects beagles, bulldogs, chihuahas, and spanials. It caused concentric hypertrophy of the right ventricles. If you do a balloon valvuloplasty the animal could have a good prognosis.
EKG will show VPDs.
Pulmonic Stenosis
This congenital heart disease that can be seen in cats and is characterized by a “hole in the heart”.
If the murmur is loud that means the hole is small which means a better prognosis and no treatment necessary.
Ventricular Septal Defect
This congenital defect is found in Keeshonds and Bulldogs. It causes the MM to be blue in the front and pink in the back.
It consists of pulmonic stenosis, ocerriding aorta, VSD, and enlarged right ventricle.
Tetralogy of Fallot
This congenital defect can cause regurgiation in cats and large breed dogs because of dysplasia of the valves/muscles of the heart.
AV Valve Insuffiency
This congential heart disease is found in german shepards. At 3 months you can see VPDs, VTs, and sudden death. If caught early can be treated with SOTALOL + Mexilitene till 18 months.
Inhertied Ventricular Arrhythmia
This cardiomyopathy causes sudden death in Dobermans. Causes decreased contractility and VPDs and left sided CHF. You can diagnoses with an ultrasound because the ventricles are enlarged and flappy.
DCM
How would you treat DCM?
Furosemide for the edema
Pimobendan to improve contractility
ACE to blunt RAAS response
This cardiomyopathy in cats is caused by a taurine deficiency.
DCM
This cardiomyopathy is the most common in cats especially seen in middle aged mainecoon and ragdolls.
It will have CONCENTRIC hypertropy(increased cells, reduced chamber).
Signs include rear limb lameness and paralysis.
HCM
What causes the lameness and paralysis in cats with HCM?
Thromboembolism
How can we treat the thromboembolisms in cats with HCM?
Heparin
DO NOT USE ASPIRIN
VPDs are seen with this cardiomyopathy in Boxers.
ARVC of Boxers
How would we treat a Boxer with ARVC that has VPDs over 1000/day?
Sotalol
This cardiomyopathy seen in King Charles Spainels, and has thickened chordae tendonae that can rupture.
**The cardiac output is normal in these dogs despite have increased contractility**
The dogs are usually happy and normal with a cough.
Myxomatous Atrioventricular Valve Disease
Dump: What is used to treat pulmonary edema?
Furosemide