Block 4 Flashcards
How many teeth do dogs have?
42
How many teeth do cats have?
30
What is the canine tooth?
04
What is the carnesial on the maxillary?
08
What is the carnesial on the mandible?
09
What is normal probe depth in dog?
1-3mm
What is normal probe depth in cats?
0.5-1mm
How many molars does a cat have?
1 in each arcade
What teeth are cats missing on the mandible?
05 and 06 of the premolar
What does PD stand for?
Periodontal disease
What is PD stage 0
No disease
What is PD stage 1
Gingivitis (reversible)
What is PD stage 2
Periodontitis present, attachment <25% loss (unlikely reversible without dedicated owner)
What is PD stage 3
25-50% loss
What is PD stage 5
> 50% loss
What is open vs closed root planing?
Scraping away the bacteria underneath the gingiva
Open: Making a flap to get lower
Closed: Smaller pockets that can be done without a flap
What antibiotic can be added to slow progression of PD 2 and PD 3?
Doxirobe
What is M1-3?
Mobility
What is M1
0.2mm-0.5mm
What is M2
0.5-1mm
What is M3
> 1mm
What is F1-3?
Furcation
What is F1
<50% under crown
What is F2
> 50%
What is F3
Can push a probe all the way through the furcation
What are the 7 scenarios that you remove a tooth?
PD4, M3, F3, abscess, fracture, resorptive lesion, crowding, trauma
What is type 1 resorptive lesion?
Roots still present
Whole tooth extraction
What is type 2 resorptive lesion
No root left
Crown amputation
What is type 3 resorptive lesion?
Mix of both types of lesions
What is an uncomplicated fracture?
No pulp exposure
What is a complicated crown fracture?
Pulp fracture
What is a risk for fractures?
Infection of the pulp
What normally causes oral nasal fistulas after canine extraction?
Too much tension on suture
What does calicivirus cause?
Tongue ulceration
Where is the #1 place for a oral nasal fistula to occur on a dog?
Underneath canine tooth after extraction
What opioids can you use for standing equine dentals?
Butorphanol or morphine
What number is the wolf tooth?
05 or first premolar
Do you need to trim back gingival hyperplasia to reduce bacterial pockets?
Yes!
Does a blind woof tooth need to be extracted?
Absolutely!
What is the first tooth that you can see in a horse’s mouth in the back area?
06
Should you extract a lower wolf tooth?
Yes
Does a normally formed wolf tooth need to be extracted?
Not necessarily
What does a diastama cause?
Fermentation leading to an acidic environment causing an anaerobic bacterial infection
When do you extract the wolf tooth?
After it is erupted, not necessarily at castration
SAFER BEFORE 18 MONTHS
What is the most common cause of equine periodontal disease?
Diastema
What is a transverse ridge?
Like a small mountain in the tooth
Is the wolf tooth the same as the canine?
NO!!
What is a ramp?
Up slope on the bottom 11s
ALWAYS EXTRACT BLIND WOLF TEETH
What is a hook?
Top tooth down, usually 06
What do you do about a hook?
Grind down 2-3mm at a time, dont want to expose pulp
What must you do to a step?
Take it down
What does the secondary bacterial infection caused by the diastema cause?
Sinusitis
How to treat EOTRH?
Removal of teeth
Can you create a deworming protocol without seeing the farm first?
Nope
What does EOTRH?
Equine odontoclastic tooth resorption and hypercementosis
***** ON EXAM: What is the GI parasite control plan for a dog or cat during first year of life?
2, 4, 6, and 8 weeks, then monthly and fecal recheck (2x or more)
Do you deworm at fixed intervals?
No!
Should you tailor strongyle control to the active transmission season?
YES!
Where is anthelmintic resistance worst in?
Southern US
What is refugia?
Parasites that have not been exposed to dewormers
Should you use fecal egg counts to diagnose clinical disease in horses?
NO!
Does refugia work for all parasites?
NO!
What parasites do we consider refugia a part of our management plan?
Food animals or horses only
Which hosts should we do efficacy tests on?
Ones that actually are treated on? (dogs for a dog disease)
What is the most common reason for oral maxillofacial surgery?
Trauma
How do you tell if a drug is effective against parasitic infection?
Fecal egg count reduction test
What would the removal of one half of the rostral mandible be called?
Rostral mandibulectomy
Where can you go to find reliable recommendations in companion animals?
CapCVet
Where does fenbendazole work?
In the intestine
During mandibular surgery, they use different terminology than dentistry
They consider each side of the mandible as an individual bone
What would the removal of one hand of both sides of the mandible be called?
Bilateral mandibulectomy
Where is the caudal inferior alveolar block located?
Near the caudal part of the ramus. inside of the jaw
What are the margins for removal of neoplasia on mandibulectomy?
1cm
What is the most common complication with mandibulectomy?
Mandibular drift
What is tight lip syndrome?
Rostral edge of lip tissue pulled over mandibular dental arcade
What does tight lip syndrome inhibit?
Mandibular growth
What is tight lip syndrome described most in/
Shar-peis
What are important complications of maxillectomy?
Oronasal fistula
How long does it take dogs to start eating after surgery?
48hrs
How long will it take the majority of dogs to adapt?
2 weeks
If a cat is having a hard time eating, what can be done?
Feeding tube
Can you remove the whole tongue in dogs? Cats?
Dog: yes
Cat: No
What types of cleft palate are there?
Hard palate only
Combo
Soft palate only
Is treatment of cleft palate always necessary?
Not if not clinical!
How do you diagnose a cleft palate?
Sedated oral exam
Remove any debris trapped in the cleft
What can be a sequela of cleft palate?
Aspiration pneumonia
Cleft palate can be a multi staged surgery
When is the best time to treat cleft palates?
Early (3-4 months age)
What is the artery that needs to be protected in cleft palate surgery?
Palatine artery
What is important post-op in cleft palate surgery?
Nothing hard PO for 4 weeks, including toys
What is the most common salivary gland for disease?
Sublingual
What is magic mouth wash made up of?
Lidocaine, Maalox (aluminum), benadryl
What is the most common disease of the salivary gland?
Sialadenitis (inflammation of gland)
In a parotid sialocele surgery, what must be avoided
Facial nerve
What is the most common type of sialocele?
Cervical sialocele
What is the second most common type of sialocele?
Sublingual/RanulaI
How to you cure a cervical sialocele?
Removal of BOTH mandibular and sublingual salivary gland
Something about lingual nerve
Why must mandibular and sublingual glands be removed?
They share the same duct
Does how much protein matter?
Less of how much, more of the type of protein
What is like the #1 takeaway from a lot of Rudinsky’s lectures?
Dont jump to a liver diet
What should you keep in mind about protein content in growing animals?
Higher protein in kidney diet, worry more about where the protein is coming from
What are 7 things that make up a “typical” liver diet?
Reduced/modified protein
Reduced copper content
Increased zinc
Decreased sodium
Increased soluble fiber protein
L-carnitine fortified
Anti-oxidant enriched
What liver diseases are copper and zinc content specific for?
Copper hepatopathies
What does increased copper cause/
Oxidative stress
What does increased zinc do?
Zinc reduces the intestinal absorption of copper
What is the metabolism of copper?
Absorbed in intestine
Stored in liver
Secreted in bile
What should zinc supplementation not be combined with?
d-penicillamine
Decreases effect of both
What is the reason for decreased sodium content?
Avoids contributing to formation of portal hypertension and ascites
Reasons to modify protein?
Hepatic encephalopathy
Reason to decrease sodium?
Ascites/portal hypertension
Reason to reduce copper and increase zinc?
Copper hepatopathy
Why enrich with anti-oxidants?
Allergies
Reason to increase soluble fiber?
Hepatic encephalopathy
Why fortify with L-carnitine?
Increased L-carnitine to potentially aid in fatty acid oxidation
What is the threshold for copper hepatopathy?
400 (800 is bad)
What is a useful copper chelator?
Penicillamine
What supplement can give to a copper hepatopathy dog?
Zinc
What are the top 4 things to do for a copper hepatopathy dog?
Low copper diet
Copper chelator (penicillamine)
Zinc supplement
Anti-oxidant diet
What are 2 low copper proteins?
Eggs
White meat
What is a low copper diary product?
Cottage cheese
Where can you go to find copper concentration?
USDA website
What does a portosystemic shunt cause?
Heptaoencephalopathy (HE)
What is high in HE?
ammonia
What is medical therapy for portosystemic shunt?
Lactulose
Antibiotics
Anti-epileptic
Do you reduce protein in a PSS animal?
Not unless symptomatic
How do you treat lymphocytic disease?
Immunosupression
**Are elevate liver enzymes an indication for the use of a liver diet?
NO!!
What is copper needed for?
Normal METABOLISM
What does high amounts of copper cause?
Oxidative stress
What 2 molecules carry copper?
Albumin
Transcuprein
How is copper excreted?
through bile
What are the 5 treatments to copper hepatopathy?
Low copper diet
Copper chelation
Decrease inflammation
Zinc supplement
Anti-oxidant
*Typical Liver Diet
*Modified protein content
*Reduced copper content
*Increased zinc
*Decreased sodium
*Increased fiber
*L-carnitine
*Anti-oxidant
What is copper chelation?
Medications utilized to increase mobilization of copper out of body
Beside penecillamine, what is the other copper chelator that can be used?
Tridentine hydrochloride
Can zinc supplement and copper chelator be combined?
NO!!
What is a copper specific anti-oxidant?
Vitamin E
What is a classic anti-oxidant to be used with Cu hepatopathies?
Denamarin
Should you use colchicine?
No!!
What are the 2 reasons not to use it?
- Documented to cause decreased copper excretion
- High side effect profile
What is a nutraceutical?
food that has pharmaceutical benefit
What is s-adensyl-methionine (SAMe)
glutathione donor (aka an anti-oxidant donor)
Where is glutathione found (GSH)
Synthesized and found in almost every cell type
(Hepatocytes have higher levels)
What is something that you can prescribe to every liver patient?
Glutathione (GSH)
What is glutathione?
I think it is an antioxidant
What is another heptatoprotectant that can be prescribed?
N-acetylcysteine
What does cysteine do?
Increases glutathione levels
Where is cysteine best characterized?
Acetaminophen toxicity
What is a better home treatment for a hepatoprotectant than the IV acetylcystein?
S-adenosylmethionine (SAMe)
What are 2 brands of SAMe?
Denamarin
Denosyl
What is silymarin?
Milk Thistle
What is silymarin (milk thistle) specifically known to inhibit the uptake of?
Amanita mushrooms
What does silymarin specifically affect?
P450 metabolism
What is ursodiol?
Bile acid of chinese black bear
What does ursodiol cause?
Stimulates bile flow
What type of disease is ursodiol (bear bile) most useful in?
Liver cirrhosis (inability for bile to leave)
What are the 2 reasons to not use hepatoprotectants?
Tolerance
Finances
With necroinflammatory disease, what should you use?
SAMe +/- ursodiol
Which cholestatic disease, what should you use?
Ursodiol +/- SAMe
What is the first line of defense against immunomodulatory chronic hepatitis?
Corticosteroids there are others if the side effects are too high
What are the top 4 drugs for immunomodulatory chronic hepatitis?
Corticosteroids
Azathioprine
Mycophenalate
Cyclosporine
What are the top 2 drugs in cats for immunomodulatory chronic hepatitis?
corticosteroids
Cyclosporine
What is an iatrogenic side effect of prednisone (corticosteroid)?
Iatrogenic hyperadrenocorticism
What are the 3 types of hepatic encephalopathy?
Type A - Acute liver failure associated
Type B - PSS associated
Type C - Chronic liver disease associated
What are the 4 components to treatment of hepatic encephalopathy?
Correct precipitating event
Modify dietary protein
Decrease ammonia absorption
Modify microbiome
Does ammonia or ammonium cross diffuse better?
Ammonia
What is the most common precipatiting factor HE?
Infection
What can oner restriction of protein have on HE?
Can make it worse!
Is organ meet a good protein?
No, very encephalopathic
What are 2 ways to reduce circulating ammonia?
Nonabsorbable disaccharides (alter colonic pH)
Oral antibiotics (to reduce ammonia-producing bacteria)
What is a non absorbable disaccharide that can be given?
Lactulose
What does lactulose do?
In the colon, lactulose is metabolized by gut bacteria into organic acids (like lactic acid and acetic acid), which acidify the intestinal environment.
The acidic pH helps convert ammonia (NH₃) into ammonium (NH₄⁺), a form less readily absorbed into the bloodstream, thus reducing ammonia levels.
What are 3 ways that the microbiome can be influenced of HE patient?
Antibiotic
Probiotic
Prebiotic
What does the C stand for?
Coagulopathy
What is lactulose categorized into?
Prebiotic
What is the acronym for liver disease complications?
CANINE
What are 3 antibiotics used with HE?
(MAN)
Metronidazole
Amoxicillin
Neomycin
Rifaximin but really expensive
What does the N stand for
Ncephalopathy
What does the A stand for
anemia
What does the I stand for?
Intestinal and gastric ulcers
What does the N stand for?
Ndotoxemia and infection
What does the E stand for?
effusion
What is the downside to omeprazole?
Liver metabolism
What is a good H2 blocker?
Famotidine
What are 3 acid suppressors for GI ulcers?
H2 blockers
Proton pump inhibitors
Omeprazole
What mechanism causes endotoxemia and infection?
Impaired kupffer cell function
What causes intra hepatic portal hypertension?
Cirrhosis
What type of H2 blocker should be avoided?
P450 inhibitors
Why does portal hypertension occur?
Increased pressure due to cirrhosis
What are 2 causes of post-hepatic portal hypertension?
Right heart failure
Pericardial effusion
What are 4 consequences of portal hypertension?
Ascites
Acquired PSS
Hepatomegaly
Gastric ulcers
What are 4 management strategies for ascites and edema?
Sodium restriction
Diuretics
Colloids
Abdominocentesis
Why does portal hypertension cause gastric ulcers?
Decreased blood flow makes the stomach more friable
What is an acquired shunt secondary to?
Pulmonary hypertension
What dog breeds get extra hepatic shunting vessels?
Cats, small dogs
What dog breeds get intrahepatic shunting vessels?
Large breed
What is a clinical sign of PSS especially in cats?
Hypersalivation
What is a clinical sign of PSS?
Urate stones
What are the 2 locations that the liver gets blood?
80% portal blood
20% Arterial blood
What is seen in RBCs of PSS cases?
Microcytic (small) RBCs
What may be seen in urinalysis of PSS cases?
Ammonium crystals
What are 2 primary liver function tests?
Serum bile acids
Blood ammonia levels
Given a PSS, what type of clearance increases?
Renal clearance over intestinal clearance
Serum bile acids increase with _______ types of liver disease
ALL
Hepatocellular dysfunction
Cholestasis
PSS
What is a more specific test for PSS?
Blood ammonia
What are the 3 medical managements for congenital PSS?
Protein-restricted diet
Lactulose, antibiotics
Correct precipitating events
What is the stainless steel ring that is used for constricting PSS?
Ameroid constrictor
What is the schedule of ameroid constricting?
Rapid phase - 14d
Gradual - Up to 60d
How is hepatic microvascular dysplasia differentiated from PSS?
Protein C
What type of PSS can a aneroid constrictor be used on?
Extrahepatic PSS
What is an asymptomatic reason for increased SBA?
Hepatic microvascular dysplasia
Can you treat hepatic microvascular dysplasia?
No
What do all surgical shunt corrections need to be pre-treated with?
Anti-epileptic
If dogs have a high protein C activity, >70% what does that likely mean?
MVD (but DOES NOT differentiate)
What is the best technique for determining fecal load?
Fecal flotation
If protein C is <70%, what does that mean?
It is PSS
What are the 3 consequences of PSS?
Hepatic encephalopathy
Urate urolithiasis
Hepatic atrophy
What is the least toxic anthelmintic?
Benzimidazoles
What do you need to change between large and small animals with fecal floats?
There is a different media
What is MOA of benzimidazoles?
Binds to beta-tubulin, disrupts microtubules to kill parasites
Why does the MOA work in parasites?
Their higher concentration of beta tubulins
What has the fasted rate of absorption of the benzimidazoles?
Liquid
What has the best concentration of the benzimidazoles?
Pellets
Where do benzimidazoles primarily work?
Within the gut
What is an issue with imidazothiazoles?
Narrow margin of safety
What does levamisole not work on?
Cestodes or trematodes
What is the mechanism of action of imidazothiazoles?
Cholinergic agonist at synaptic acetylcholine receptors on nematode muscle cells
What is the main difference between levamisole and pyrantel?
Levamisole has a narrow margin of safety
What is a cestodicide?
Praziquantel
What are cestodicides effective against?
Cestodes
What is the outcome of chronic fascioliasis?
Biliary hyperplasia and fibrosis
What is fascioliasis?
A zoonotic fluke
What is the life cycle of fascioliasis?
Immature fluke penetrates bowel wall and migrates to liver in 4 days
How long does it take for fascioliasis to mature?
8-12 weeks
What does acute fascioliasis cause?
Liver failure with jaundice
Clostridial disease
Once the fascioliasis is mature, what happens?
Penetrates bile duct leading to chronic fascioliasis
What is a bad, common sequela post-choke?
Aspiration pneumonia
What are macrocyclic lactones effective against?
BOTH endo and ectoparasites
How can you treat adult flukes?
Albendazole and benzensulfonamides
What macrocytic lactones are used most commonly world wide?
Avermectins and milbemycins
What do macrocytic lactones not work against?
Tapes and flukes
What is a drug that kills both endo and ectoparasites?
Endectocides
What is a common symptom of choke?
BILATERAL nasal discharge
What is the MOA of macrocyclic lactones?
Paralytic effects through GABA/glutamate gated Cl- channels
What uncommon clinical sing is seen in a guarded prognosis for choke?
Subcutaneous emphysema
What is an uncommon motility disorder in horses but is over represented in Friesian horses?
Megaesophagus
**What can you NOT use in food animals in the US?
Nitroimidazoles
With an esophageal tube, what should you lavage with?
ONLY WATER
What is the most common esophageal disorder in horses?
Choke
What should you sedate a choke horse with?
Alpha-2 or and opioid