Review: VA Flashcards
what is the role of hypokalemia in a hypochloric metabolic alkalosis?
to increse of the blood pH, the intracellular H is exchanged by the extracellular K which lowers the blood K.
kidney increases the excretion of H in exchange of K and HCO3 (aldosterone)
paradoxical aciduria despite the alkalemia
- Which of the following statements is false?
- Normal filling of the reticulum activates the primary/mixing cycle
- Normal saliva production is not dependent on the time the animal spends cud chewing (ruminate)
- Normal rumen emptying is dependent on an intact primary cycle
- Volatile fatty acids are absorbed through the rumen wall along a concentration gradient
- Activation of stretch receptors in the dorsal rumen wall initiates the eructation reflex
Normal saliva production is not dependent on the time the animal spends cud chewing (ruminate)
- Ventral subcutaneous edema is least likely to be caused by:
- Decrease oncotic pressure
- Increased hydrostatic pressure
- Bladder rupture
- Increased capillary permeability following generalized vasculitis
- Chronic congestive heart failure
Bladder rupture
- Which of the following is not associated with cud chewing?
- Saliva production
- Mechanical breakdown of lignin
- Mechanoreceptor induced increased in mixing cycles
- Decrease the formation of stable foam through saliva production
- Drops rumen pH by increasing rumen acidity
Drops rumen pH by increasing rumen acidity
- All statements are true except
- Lepto, Clostridium, copper cause anemia through intravascular hemolysis
- A PCV of <12 is one of the indications for a blood transfusion
- Amprolium may predispose to polioencephalomalacia because it acts a thiamine analog
- A goats blood volume is equal to 12% of its body weight
- Fetal manipulation is not indicated until 30 minutes after onset of labor in goat
A goats blood volume is equal to 12% of its body weight
- Which of the following statements is false?
- A large fluid filled rumen is commonly associated with acute grain overload
- A high lignin content in hay is one of the predisposing causes of abomasal impaction
- Lymphoma involving the wall of the abomasum is one of the predisposing causes of pyloric outflow obstruction
- Type 1 vagal indigestion is characterized by a papple shaped abdomen
- Hypokalemia and hypocalcemia is often associated with an RDA
Type 1 vagal indigestion is characterized by a papple shaped abdomen
The normal rumen Ph is: 1 3-4 ]
2 5-6
3 6-7
6-7
- You perform a venous blood gas on a 60 kg calf. The calf is severely acidotic and has a base deficit of - 15mmol/liter. What volume isotonic bicarb (156 mmol/l) would you administer to correct the entire bicarb deficit? For purposes of calculation assume a 0.4 bicarbonate space.
- 1.2
- 2.3
- 3.4
- 5.1
- 6.0
2.3
free abdominal fluid
- Apart from Ca – H exchange on protein what other mechanism contributes to the lowered Ca with an alkalosis?
- Increased Ca excretion in the milk
- Calciuria induced by the alkalosis
- Decreased affinity of osteoclastic receptors to bind with PTH
- Insufficient Ca binding protein in gut
- Rumen hypomotility
Decreased affinity of osteoclastic receptors to bind with PTH
- A cow (body condition score 4.5) with an RDA which is severely dehydrated, hypocalcemic and hypokalemic (1.9mEq/L – normal 3.8-5) and ketotic and has a blood pH of 7.28 and high anion gap is best treated with which of the following?
- 20l iv fluids (.9 % Saline) and bicarb; 2x 500ml 50% dextrose; KCl at 20mEq/L and 750 ml Ca IV
- 20l iv poly-ionic, isotonic fluids; 2x 500ml 50% dextrose; 20mg dexamethasone; KCl at 20mEq/L and 750 ml Ca IV
- 1liter hypertonic saline; 20l iv (.9% saline + 2.5% dextrose); 1 x 500ml 50% dextrose; KCl at 20mEq/L; 150g KCL orally and 750 ml Ca IV
- 1liter hypertonic saline; 20l iv (.9% saline + 2.5% dextrose); KCl at 20mEq/L; 20mg dexamethasone, 150g KCL orally and 750 ml Ca IV
- 1liter hypertonic saline; 1 x 500ml 50% dextrose bolus then CRI fluids (.9% saline + 2.5% dextrose); KCl at 20mEq/L; 150g KCL orally and 750 ml Ca IV and insulin CRI
Cow needs a lot of K (IV and oral) because it is hypokalemic, needs bicarb because of the acidosis, and dextrose because of ketosis. Do not give hypertonic saline in this situation because it is an acidic solution. Not an appropriate question because the most correct answer does not have bicarb as part of the treatment.
- Which of the following statements is false?
- Acetate is one of the main precursors of butter fat
- Buffalo milk has a high butter fat content making it suitable for type B dairies
- Heat stress is linked with lowered fertility
- Open mouth breathing results in lowered rumen buffering
- Providing cooling through water via mist is ideal for heat stress control
Providing cooling through water via mist is ideal for heat stress control
- Which of the following is not a complication of RVA after correction?
- Abomasal ileus
- Abomasal ulceration
- Vagal indigestion type 2
- Vagal indigestion type 3
- Persistent hypochloremic metabolic alkalosis
Vagal indigestion type 2
- Regarding a positive pinch test, which statement is true?
- Is a reliable test for all stages of traumatic reticulo-peritonitis
- Pain is caused by the foreign body penetrating into the heart
- The foreign body has likely penetrated into the pericardial sac
- Is caused by tearing fresh fibrin strands attaching peritoneal surfaces
- The animal bends her back ventrally in response
Is caused by tearing fresh fibrin strands attaching peritoneal surfaces
- Which of the following should you do to expedite a diagnosis and prognosis for a 12-month old blocked goat which lives on pasture/browse?
- Take an x-ray to check for calcium stones in urethra (pearl string effect)
- Ultrasound bladder and kidneys
- Amputate the urethral process
- Check blood potassium
- Do retrograde catheterization
Take an x-ray to check for calcium stones in urethra (pearl string effect)
- From the following select the most effective treatment to prevent pregnancy toxemia in sheep?
- Identify triplet carrying sheep and feed separately
- Feed only roughage prior to lambing
- Determine liver Mg levels and supplement Mg
- Feed extra potassium
- Make sure all sheep body condition score is 4.5 – 5.0
Identify triplet carrying sheep and feed separately
- Which of the following infectious agents does not cause mouth lesions in cattle?
- BVD
- Actinobacillus lignereisi
- Fusobacterium necrophorum
- Bovine papular stomatitis
- Clostridium perfringens type A
Clostridium perfringens type A
Which findings listed strongly indicates severe fermentation failure
a) Absence of cud chewing
b) Rumen ping
c) Rumen atony
d) Rumen pH 7
e) Methylene blue reduction test - 3 minutes to discolor
rumen ping
when is LDA more likely to occur?
right after calving
- Which of the following statements is false?
- As age of castration increases, weight loss increases
- Castration at less than 500 lb had less marbling than castrated at more than 700 lb
- Calves castrated at feedlot have higher morbidity and mortality
- Early castration with implant better production than late castration in backgrounding program
- Intact calves fetch less money at conventional markets
Castration at less than 500 lb had less marbling than castrated at more than 700 lb
name 4 groups of organism that proliferates in an acidic rumen environment and their associated abnormal conditions
lactobacili- lactic acidosis
mucor- mucomycosis in the rumen abomasum and rectum
C. PERFRINGENS a- ACUTE DEATH/BOWEL SYNDROME
C. perfringens D- overeating dz, pulpy kidney
\B thiaminolyticus- polio
Which condition is typically not associated with Fusobacterium necrophorum in cattle.
a) Necrobacillosis (Necrotic stomatitis)
b) Caudal vena cava syndrome
c) Diffuse peritonitis
d) Foot rot
e) Liver abcsesses
Diffuse peritonitis
- Which of the following would be most indicative of intestinal parasitism in a sheep flock?
- Loss of body condition
- Bottle jaw as result of decreased vascular oncotic pressure
- Rumen atony
- Constipation
- Famacha score 2 in the majority of sheep
Bottle jaw as result of decreased vascular oncotic pressure
- All of the following statements are true EXCEPT?
- Enterotoxigenic E coli (ETEC) contains a K99 adherence antigen
- ETEC causes a secretory type diarrhea resulting in the loss of primarily Na, Cl and bicarb
- Adult cows can be asymptomatic shedders of Rota virus
- Oral administration of bicarb to neonatal calves is one control method to prevent the spread of E. coli
- Swollen joints can be one of the signs of failure of passive transfer
Oral administration of bicarb to neonatal calves is one control method to prevent the spread of E. coli
- Which of the following techniques is the best to catch a llama?
- Grab it by the halter
- Drive it into the chute
- Calmly let it walk into a corner of the stall and grab it by the tail
- Calmly let it walk into a corner of the stall and circle your arm around its neck
Calmly let it walk into a corner of the stall and circle your arm around its neck
- What is the best test for transfer failure of passive immunity (FPT) for a septic calf
- Total protein
- Sodium sulfate turbidity
- Blood GGT levels
- Blood fibrinogen levels
- Specific gravity of the colostrum
Total protein
- How many bottles of 500ml of 50% dextrose needs to be added to 20liters saline to make a 5% solution?
- 2
- 4
- 6
- 8
- 10
4
- The rumen pH of a cow that has been off feed was found to be 7.4. The increase in pH is partly caused by which of the following?
- Increase in lactic acid
- Decreased absorption of VFA’s
- Decreased saliva production
- Decrease VFA production
- Gram negative bacteria releasing endotoxin
Decrease VFA production
- You are presented with a 5 year old dairy cow with anorexia and muscle tremors. Rumen fluid analysis showed the following: pH 7.1; Methylene blue reduction test – slight discoloration at 5 minutes; no protozoa visible; rumen fluid watery with no particular odor. Urine positive for ketones. Which of the following will be the most appropriate treatment for this cow?
- Rumenotomy and evacuation of contents; transfaunation; dexamethazone im
- Rumenotomy; transfaunation, dexamethazone im; Vit B12 im
- Dextrose iv; KCl orally; Yeast & molasses orally
- Transfaunation; dextrose iv; KCl orally; Vit B12 im; Yeast & molasses orally
- Twenty liter saline iv; Dextrose iv; KCl orally; Yeast & molasses orally
Transfaunation; dextrose iv; KCl orally; Vit B12 im; Yeast & molasses orally
Which of the following VFA may lead to overgrowth and fusion of rumen papillae
(parakeratosis)
a) Acetic
b) Butyric
c) Propionic
d) Lactic
e) Valeric
acetic
The owner of a very valuable 24 hour old beef calf had a RID test done for
immunoglobulin transfer. The test result showed an IgG level of 920 mg/dl (normal
>1000mg/dl). He wants your advice. Despite the calf’s value he does not want to
spend money unless absolutely necessary (IgG test $35; plasma plus catheter $185)
You tell him:
a. The IgG has not reached maximum levels yet and should be retested at 36-48 hours
before deciding on plasma administration
b. The calf is fine. Take it home and leave it with the mother
c. The calf has probably already been infected and should be placed on IV antibiotics and hospitalized ($80/day for 5 days)
d. Ultrasound the umbilicus and give a shot of LA 200 ($105) e. Give plasma immediately
The IgG has not reached maximum levels yet and should be retested at 36-48 hours
before deciding on plasma administration
- A farmer calls to ask your advice about a cow that has stopped eating. Her left paralumbar fossa is sunken. He suspects that she may have some “digestive” problems. She is also looking depressed. He wants to give her something to stimulate her rumen and improve her mental state. Which of the following would you advise him to do?
- 750ml vegetable oil orally plus 2 table spoons of detergent
- 750 ml vinegar; 4pounds of sugar and 500ml coffee (helps w energy)
- 1.5 gallon vinegar; 4 pounds of sugar and 1 pound yeast
- 10 table spoons of baking soda in 1 gallon water
- Give her fresh water and hay
750 ml vinegar; 4pounds of sugar and 500ml coffee (helps w energy)
Regarding the use of oral electrolyte solutions in a 2 day-old calf with diarrhea. Which
of the following statements is TRUE?
a) Oral electrolytes contain bicarbonate to treat the systemic lactic acidosis
b) Acetate and proprionate in oral replacement fluids is indicated because they assist
in suppressing the growth of enteric pathogens
c) Oral replacement fluids facilitates clotting of milk replacers of cows’ milk origin
d) Oral electrolyte solutions should never be given with plant based milk replacer
e) Oral electrolyte solutions are sufficient to treat a severely acidotic and
hypoglycemic calf with E coli diarrhea
hypoglycemic calf with E coli diarrhea
- Which of the following statements is incorrect?
- Low ionized calcium concentration in pregnancy toxemia in sheep is partly caused by the increased blood pH à preg sheep are ketoacidodic
- Hypocalcemia in cows commonly occur during the first 2 weeks post calving
- Hyperglycemia in pregnancy toxemia in sheep is associated with insulin resistance due to high endogenous steroid release
- Induction of pregnancy with steroids and prostaglandin is not the best treatment option for a sheep suffering from severe ketoacidosis
- Pregnancy toxemia in sheep typically occurs in the last 3-4 weeks prior to lambing
Low ionized calcium concentration in pregnancy toxemia in sheep is partly caused by the increased blood pH à preg sheep are ketoacidodic
Which one of the following does not cause a profuse diarrhea in adult cattle
a) Mycobacterium paratuberculosis
b) Ostertagia type 2
c) Corona virus
d) Bovine leucosis virus
e) Copper deficiency
Bovine leucosis virus
- Which of the following statements is false?
- Morphine is an effective and inexpensive drug to treat acute pain
- Side effects can include euphoria and aggression
- Most of the morphine receptors are situated in the spine
- Morphine can be effectively combined with NSAID drugs
Morphine can be effectively combined with NSAID drugs
Which of the following can cause an L-shaped abdomen
a) Small intestinal volvulus
b) Free gas bloat
c) Vagal indigestion type 1
d) Abomasal hypomotility (outflow obstruction)
Abomasal hypomotility (outflow obstruction)
All of the following are true statements regarding the primary rumen contraction EXCEPT
a) The mixing contraction plays a pivotal role in maintaining optimal fermentation
b) The integrity and presence of the primary cycle can only be evaluated by means of a
rumen fluid evaluation
c) Rumen/reticulum emptying takes place during the phase of reticulum contraction
d) Damage to the vagus nerve may alter or suspend the primary cycle
e) Blood pH and electrolyte changes can have a negative effect on the gastric center
leading to rumen atony
The integrity and presence of the primary cycle can only be evaluated by means of a
rumen fluid evaluation
- You are presented with an 8 month old boer goat selected for breeding showing the following signs; Intermittent straining, vocalization and dribbling urine for at least past 2 days. The goat had been fed 1 pound of sweet feed/day. The owner wants to keep the goat for breeding purposes. Which of the following diagnostic and treatment protocols should be followed in this case to ensure the best outcome for both the animal and client?
- Sedate the animal with xylazine, ultrasound the bladder; marsupialize the bladder. Tell the owner the goat will be able to breed
- Check for urethral rupture by palpating the perineal area for edema, do cystocentesis and flush the bladder with Walpole solution until urine pH is below 4.5
- Tell the owner that the goat will unblock in the next 6-8 hours
- Ultrasound the bladder and kidneys. Since you suspect struvite do a tube cystotomy with normograde flushing
- Check for urethral rupture by palpating the perineal area for edema; ultrasound the kidneys, do check blood potassium and creatinine, do tube cystotomy and normograde flushing
- Ultrasound the kidneys, do check blood potassium and creatinine, do tube cystotomy and normograde flushing; continue flushing post op.
- Check for urethral rupture by palpating the perineal area for edema, do cystocentesis and flush the bladder with Walpole solution until urine pH is below 4.5
- Which of the following clinical signs is not consistent with ketosis?
- Cow licking itself
- Inverse milk fat to protein ratio
- Loss of body condition
- Acetone smell on breath
- Diarrhea
Diarrhea
what is the etiology for abomasal impactions?
poor quality roughage,
(nutrition)
- All of the following statements are true EXCEPT?
- Trueperilla pyogenes is commonly involved in abdominal abscesses following hardware disease
- Pyopericardium may lead to cardiac tamponade with distention of the jugulars and small to absent jugular pulses
- Pericardiocentesis can be done at the point of maximal intensity of the heart sounds
- Rumencentesis is done on ventral midline just behind the umbilicus
- Subacute rumen acidosis can predispose to hemorrhagic bowel syndrome caused by Clostridium perfringens type A
Rumencentesis is done on ventral midline just behind the umbilicus
- Which of the following has a negative feedback on the gastric center resulting in rumen atony and failure of fermentation?
- Low threshold tension receptors in the reticulum
- Mechanoreceptors in the mouth
- Tactile receptors round the cardia
- High threshold tension receptors in reticulum and dorsal rumen wall
- Tactile receptors in mouth - calves
High threshold tension receptors in reticulum and dorsal rumen wall
- You are presented with a calf with chronic continuous moderate bloat, a fluid filled rumen with a putrid smell and a pasty yellow, low grade diarrhea. Which of the following would be the most likely cause?
- Vagal indigestion type 1
- Abomasal ulcer
- Esophageal groove failure (Rumen drinker)
- Esophageal obstruction
- Calf diptheria
Esophageal groove failure (Rumen drinker)
- Which of the following combination is the best indicator of protein energy malnutrition (starvation)
- Low albumin; ketonuria; anemia
- Low albumin ; low total bilirubin; anemia
- Low BCS; low albumin; low bun
- Low BCS; low bun; low SDH
- Ketonuria; anemia; low bun
Low BCS; low albumin; low bun
- You are presented with an LDA and decided to correct the displacement with roll and toggle procedure. Which of the following is the correct order in which to proceed?
- Place the cow in right lateral then roll her on her back. Place the first toggle and allow the abomasum to deflate
- Place the cow in left lateral then roll her on her back. Place the first toggle and allow the abomasum to deflate
- Place the cow in right lateral then roll her on her back. Place the first toggle and pull the abomasum up. Place the second toggle and allow the abomasum to deflate
- Place the cow in right lateral. Place the first toggle and pull the abomasum up. Place the second toggle and allow the abomasum to deflate
- Roll the cow from right lateral into left lateral. Let her stand up. If the ping is gone place the toggles while standing
Place the cow in right lateral then roll her on her back. Place the first toggle and pull the abomasum up. Place the second toggle and allow the abomasum to deflate
- Which of the following statements is incorrect?
- Diagnosis of hypomagnesemia can be confirmed on necropsy by measuring mg levels in ocular fluid
- Decreased blood Ca levels may also be associated with hypomagnesemia
- Frequent urination is often a sign of subacute hypomagnesemia
- Sheep and goats are very resistant to hypomagnesemia
- Lush spring pasture predispose to hypomagnesemia
Sheep and goats are very resistant to hypomagnesemia
- Which of the following statements is incorrect?
- Relative metabolic alkalosis increases the affinity of osteoclast receptors for PTH
- PTH will decrease the renal excretion of Mg in cases of hypomagnesemia
- One reason why older cows are more susceptible to develop milk fever is reduction in osteoclast receptors
- The DCAD diet can indirectly stimulate PTH activity by causing a slight metabolic acidosis
Calcium is primarily absorbed through the duodenum via calcium binding protein
Relative metabolic alkalosis increases the affinity of osteoclast receptors for PTH
- Which of the following statements is incorrect?
- The dietary cation/anion difference of dairy cows on primarily forage during the dry period will increase the incidence of milk fever à cow that is mainly on forage will have more cations than anions (alkalotic); goes against calcium mobilization
- Addition of anions to the diet will increase the absorption of calcium from both the gut and bone à osteoclasts receptor affinity for PTH increases during acidemia
- Ionized calcium levels will decrease in the face of a metabolic alkalosis
- PTH does not play a role in the conservation of magnesium à PTH will cause resorption of magnesium in the kidney
- Subclinical hypocalcemia may play a significant role in the pathogenesis of abomasal displacement à causes decreased abomasal tone
PTH does not play a role in the conservation of magnesium à PTH will cause resorption of magnesium in the kidney
Which of the following feeding methods for colostrum will result in highest levels of IgG
in a 4 hour old Holstein calf.
a. tube feeding
b. nursing from a bottle
c. nursing the cow
d. bucket feeding
e. Wait until the calf is 8 hours old before feeding
tube feeding
- Which of the following is not an important consideration when doing FAMACHA scores?
- Time of membrane exposure before recording
- Ambient temperature
- Dust
- Age
- Fever
Age
- All of the statements are true except
- Open mouth breathing in alpacas represents a severe problem since they are obligate nasal breathers
- BCS of 3 in a lactating goat is normal
- IM injections in the back of the leg in goats should not be used as a routine
- The correct site for tail amputation in sheep to prevent rectal prolapse is sacro-coccidial
- Both the infratrochlear and cornual nerves should be blocked for disbudding in goats
The correct site for tail amputation in sheep to prevent rectal prolapse is sacro-coccidial
- Which of the following statements is false?
- Black leg can cause a necrotizing myocarditis
- Lymphosarcoma can occur in the right atrium of adult cattle
- Vegetative endocarditis caused by Trueperalla pyogenes usually affects the left AV valve à right AV valve
- Vit E difficiency is associated with “Mulberry heart disease” in pigs
- Gossypol is a potential cardiac toxin
Vegetative endocarditis caused by Trueperalla pyogenes usually affects the left AV valve à right AV valve
- Which of the following should be included in spring/summer herd health program?
- FAMACHA
- Body condition score
- Fecal floats on 10% of herd
- FECRT on those with high egg counts
- All of the above
- All of the above
- Which of the following is not directly associated with heat stress?
- Infertility
- Rumen acidosis
- Respiratory alkalosis
- Rectal temperature
- Mastitis
Mastitis