Essential stuff Flashcards
A 2-year old Brown Swiss with an abomasal torsion is likely to have which electrolyte abnormalities?
Hypochloraemia, metabolic alkalosis, hypokalaemia
What is the dental formula of a cow?
- 0.3. 3
3. 1. 3. 3
How long is the oestrus cycle in the cow, ewe, sow, mare, queen and pig?
Cow - 21 Ewe - 17 Sow - 21 Mare - 21 Cat - 40-60
What is the dental formula of the dog
Permanent
I 3/3 C 1/1 PM 4/4 M 2/3
= 42 teeth in total
Puppies
28 teeth in total
I 3/3 C1/1 PM 3/3 M 0/0
What is the dental formula of a cat?
I 3/3 C 1/1 PM 3/2 M 1/1
=30 teeth in total
Kittens
I 3/3 C 1/1 PM 3/2 M 0/0
= 26 teeth in total
A client has just bought a new kitten and asks you when its teeth should erupt as she is concerned it is too young - what do you tell her?
No teeth at birth.
Canines through by 4 weeks.
Incisors and premolars through by 5-6 weeks.
All primary teeth usually present and correct by 6 weeks in both kittens and puppies.
Permanent teeth
Incisors and canines usually through at 3 months
Premolars usually coming through at 4 months
Molars usually coming through at 5 months.
Which bacterial species are implicated in periodontal disease?
Bacteroides, peptostreptococcus, Fusobacterium are common but literally hundreds of species are possible.
Where are FORLs most commonly found?
The lesion is almost always located on the buccal aspect of the tooth and the mandibular third premolars 307 and 407 are most commonly affected.
What is the difference between type 1 and 2 FORLS and how they are treated?
type 1 - normal tooth root density and appearance. Periodontal ligament space visible. often associated with general periodontal disease.
Type 2 - roots hard to see, may be replaced by alveolar bone or ghosted, periodontal ligament space is not clear, gingivitis associated with afected tooth rather than general periodontal disease.
tx - extraction. Type 1 require standard extraction with root retrieval.
Type 2 can be treated with coronal amputation. the crown is amputated and no attempt is made to retrieve roots.
How should feline chronic gingivo stomatitis be treated?
10 day course of antibiotic. Careful scale and polish. Extract teeth affected by FORLS or periodontal disease. chlorhexidine gel for owner to apply. Many persist after treatment. other possibilities include; Removal of all cheek teeth. Steroids Interferon
Why would microcytosis and hypochromia occur in anaemia?
Iron deficiency
Describe what tests cane be done to evaluate haemostasis?
Evaluating primary haemostasis:
BMBT - small cut in the buccal mucous membranes - which gives a rapid assessment of platelet function, if platelet NUMBER is normal. Normally, bleeding should stop within 3 minutes, and a BMBT of greater than 5 minutes is considered prolonged.
Evaluating secondary haemostasis:
Activated clotting time - ACT is the time taken for 2ml of fresh whole blood to clot in a tube with a contact activator. The normal ACT is 90-120 seconds and
What are the causes of haemolytic anaemia?
Immune mediated
DIC, haemangiosarcoma
Babesia
Heinz body - paracetamol, onions, zinc, propylene glycol
Copper toxicity associated with hepatic necrosis in bedlington terriers
In cats also - FELV, mycoplasma haemofelis.
Which factors are dependent upon vitamin K to become active?
II, VII, IX and X
What is fibrinolysis?
Plasma induced fibrin breakdown - prevents uncontrolled and wide spread clotting. The two most important naturally occuring anticoagulant proteins are antithrombin and protein C. Fibrin degradation products are the end products of fibrinolysis.
How is Von willi brands disease diagnosed/
Affected patients have a prolonged BMBT and decreased plasma levels of vwf.
Desmopressin sometimes used as a treatment as it increases levels of vwf.
Which factor is missing in haemophilia A?
Factor VIII - a component of the intrinsic pathway of clotting cascade. Affected patients have a prolonged ACT, APt and normal PT.
When should DIC be suspected?
If testing reveals thrombocytopenia, elevated FDP, decreased fibrinogen, and prolonged BMBT, ACT, PT and APTT.
What drugs can be used to treat Canine immune mediated thrombocytopenia?
Single dose vincristine
Glucocorticoids
Ciclosporin or azathioprine
What is the best protocol for lymphoma?
Prednisone, doxorubicin, cyclophosphamide, vincristine
What is the pathogenesis of secondary renal hyperparathyroidism?
Increased phosphate - Low calcium
Stimulates PTH
Increased Calcium withdrawn from bone
Recued production of calcitriol in the kidney - impaired intesitnal absorption.
What disease often occurs secondary to exocrine pancreatic insufficiency in dogs?
The correct answer is small intestinal bacterial overgrowth (SIBO). This occurs because of the loss of antibacterial factors from pancreatic fluid as well as altered intestinal motility and decreased immunity from malnutrition. Concurrent SIBO can often exacerbate clinical signs and complicate therapy for EPI. The other choices listed are not sequela to EPI.
Where do soft tissue sarcomas arise from?
fibrous tissue, pericyte of blood vessels, nerve, adipose tissue, synovial cells, skeletal muscle
They are locally infiltrative but
What is a normal norberg angle?
> 105
What type of hypersensitivity reaction is rheumatoid arthritis?
Type 3 - immune complex disease.
What is the difference between type I, II, III and IV hypersensitivity reactions? give an example of each?
Type I - immediate or anaphylactic. usually takes 15 mins or so from antigen exposure. It is mediated by IgE binding to antibody. E.g Asthma, hay fever, biting insects, allergic rhinitis, atopic dermatitis.
Type II - Cytotoxic. Primarily mediated by Igg or Igm antibodies. eg in mycoplasma infection the infectious agents trigger an immune response that destroys those cells as part of the protective mechanism, IMHA, Immune mediated thrombocytopenia, Myasthenia gravis, pemphigus
type III - immune complex hypersensitivity - e.g lupus or rheumatoid arthritis, it is caused by soluble immune complexes, purpura haemorrhagica
Type IV - cell mediated or delayed - Caused by monocytes and a few T cells. e.g autoimmune thyroiditis, keratitis sicca, old dog encephalitis after CD infection
What organ systems does SLE effect?
Polyarthritis Renal disease Dermatogical lesions haemolytic anaemia thrombocytopenia
Which drugs commonly cause immune mediated polyarthritis?
Cephalosporins, penicillins, sulfa drugs
dobermans susceptible to sulphadiazine-trimethoprim reactions.
What is the non surgical treatment for a shoulder luxation?
Velpeau
• Medial luxation
– Spica splint
• Lateral luxation
What will be seen on radiography with biceps tendon disease?
Osteophytes intertubercular groove
What other structure is damaged in cranial cruciate ligament rupture?
Medial menisci
What are the possible treatments for cranial cruciate ligament rupture?
Lateral fabella tibia suture, TPLO or tibial wedge osteotomy, Tibial tuberosity advancement, TPLO preferred in larger dogs.
What do collateral ligaments protect agains in the stifle?
Limit • valgus (medial) stifle motion • varus (lateral) stifle motion Limit internal rotation in EXTENSION – Laxity of LCL permits slight internal rotation during flexion
What are the treatment options for a medial patella luxation?
Lateral tibial crest transposition • Trochlear wedge / block recession • Medial desmotomy • Lat capsular overlap
What breed is predisposed to lateral patella luxation?
FC retrievers
in which toxicity is oxygen therapy contraindicated?
Paraquat toxicity
When can intravenous fat emulsion be used?
When treating life threatening arrhthmias caused by lipid soluble drugs e.g acute local anaesthetic toxicity.
What is the toxic dose of paracetamol in a dog?
200-600mg/kg in dogs
50-100mg/kg in cats
What are the effects of paracetamol toxicity in the dog and cat?
Cat - haemoglobin is oxidised to methaemoglobin resulting in cyanosis and chocolate coloured mucous membranes. Haemoglobin is also denatured resulting in heinz body anaemia. Signs include facial and pulmonary oedema, vomiting, ataxia, collapse.
Dog - liver is most susceptible and hepatocellular necrosis leads to liver failure. Methaemoglobin/haemoglobinuria also observed.
What is the treatment of paracetamol toxicity?
N - acetylcysteine or S adenosyl methionine
Methylene blue can be used to reduce methaemoglobin to haemoglobin.
What are the signs of NSAID toxicity?
vomiting, depression, anorexia, diarrhoea, melena, pupd.
What metabolic derangements occur with etyhlene glycol toxicity?
Toxicity is primarily caused by the metabolism of EG, by alcohol dehydrogenase to glycoaldehyde, glycolic acid and oxalate. Severe metabolic acidosis occurs as a result of glycolic acid accumulation, high anion gap, low Hco3. sodium fulorescien in antifreeze solution may be detected by woods lamp.
What is the treatment for ethylene glycol toxicity in dogs?
Ethanol in cats or 4methyl pyrazole in dogs
What type of toxin is chocolate?
Methylxanthine
How long is the oestrus cycle in the bitch?
pro oestrus - 7-10 days
Oestrus 7-10 days
Metoestrus - 63 days
Anoestrus 3-4 months
How long after oestrus signs does ovulation occur?
1-3 days, usually 4 days after the onset of vulval softening and the bitches first inclination to stand for the dog - unreliable.
A bitch has a dark green discharge after giving birth, what is this?
A normal feature in the bitch - called uteroverdin. IT is reddish brown in the queen. Caused by placental separation around the birth of the first foetus. The placenta of each foetus is usually expelled 5-15 mins after its birth and the uterine horns shorten, although sometimes 2-3 foetuses may be born before their placentas follow.
What is treatment of choice for false pregnancy?
cabergoline (galastop)
What can be used to terminate a pregnancy?
- progesterone antagonistAlizin (aglepristone)
What is the difference in treatment before juvenile and adult vaginitis in the bitch?
Juvenile - the conidition will lapse eventually, they should just bathe with chlorhexidine, no antibiotics
In adult vaginitis - antibiotics and local treatment needed
What organisms usually cause mastitis in the bitch?
Staphs, streps, E coli
Which way does the stomach usually rotate in GDV?
Clockwise.
Pylorus moves ventrally and to the left.
180 degrees most common.
Which signalment is apocrine gland adenocarcinoma seen in?
90% FEMALE
– 50% metastasised by time of diagnosis
Which signalment is prostatic neoplasia more common in?
neutered males
Grave prognosis
At which intercostal space should needle thoracocentesis be performed?
6th-8th
What type of virus is panleukopenia?
parvovirus
What is the result of infection with panleukopenia virus?
Profound and permanent suppression of the immune system - lymphopenia, neutroppenia, thymic atrophy, cerebellar hypoplasia. (ataxia, incoordination, tremors, wide base stance)
How is FIA diagnosed?
Giemsa or acridine orange stained blood smears
PCR
Regenerative anaemia with polychromasia and normblasts
AIHA often present resulting in autoagglutination or positive coombs test.
Which antigen is detected on FELV test?
p27
Which antigen is detected on the ELISA CITE and SNAP tests for FIV?
FIV P24
RIM tests detect envelope protein gp40
Which parasite can transmit mycoplasma haemofelis?
Fleas
What is the treatment for FIV infected cats with dermatophytosis?
Itraconazole
Griseofulvin can induce severe neutropenia
Which breeds are predisposed to FIP infection?
Burmese, persian, birman and bengal
Frequently in cats
How is toxoplasma diagnosed?
Detection of oocysts – but usually clinical signs do not develop until after oocyst shedding has ceased.
Following infection with T gondi - Igg seroconversion occurs after 2-4 weeks with peak titres 4-6 weeks, then maintained at high levels for many months or years. IgM titres rise more rapidly following infection and are normally maintained only for a limited period of time so a single high IgM titre demonstrates recent or reactivated infection with T gondi.
What is the treatment of toxoplasmosis?
Clindamycin
What is the recommended treatment of tuberculosis in cats?
rifampcin, pradofloxacin and clarithromycin for 2 months then rifampicin and pradofloxacin for a further 4 months.
which virus causes infectious hepatitis in dogs?
canine adenovirus 1
Which virus causes parvoviral enteritis?
CPV2
Which serovars are most commonly implicated in canine leptospira?
Icterohaemorrhagica
Canicola
Pomona
Bratislava
Grippotyphosa
What is diagnostic and treatment of choice for leptospirosis?
Microscopic agglutination test on serology
Penicillins - immediately stop replication
Elimination of carrier state is achieved by administering tetracyclines/fluoroquinolones
How does leishmaniasis cause disease in dogs?
Following infection there is a protracted incubation period. clinical signs tend to result due to hyperglobulinaemia and immune complex deposition and include glomerulonephritis, polyarthritis and uveitis. There may be dry desquamation and alopecia of the head.
What is the treatment of leishmania?
Allopurinol and antimonial drugs (meglumine antimonite)
What is the gold standard diagnostic test for rabies?
Fluorescent antibody test on brain tissue.
Which part of the oesophagus is striated or smooth muscle?
In dogs, cattle and sheep, its entire length is striated muscle, whereas in cats, horses and humans, the proximal esophagus has striated muscle and the distal esophagus smooth muscle.
What animals should amitraz not be used in?
Horses
Chihuahuas
Cats
It can cause sedation/migraines and hyperglycaemia in humans.
What would a cat with a ventral truncal alopecia with strikingly smooth shining thin and translucent skin raise suspicion of?
Feline paraneoplastic alopecia - usually associated with pancreatic and bile duct carcinomas.