Lab 8 - Pancreatic Function and GI Flashcards
What is ileus
- lack of movement somewhere in the intestines that leads to a buildup and potential blockage of food material.
- can lead to an intestinal obstruction. This means no food material, gas, or liquids can get through. It can occur as a side effect after surgery.
- can be a blockage, can be outside of intestine - tumor, or inside - an irritant
Neustigmin
Parasympomimetic which is rarely used
A) Locally: sm contraction, incr metabolism -> gas formation and accumulation is caused by gas from mouth
B) Systemic effect: incr mm (sm and striated) irritability (used in treatment)
Atropine:
Parasympatholytic effect, only used in life saving occations
Adrenaline
Sympathomimetic effect only used in life saving occations
What are the GENERAL local and systemic effects if ileus
Local effects occur at the intestines
general effects: changes of circulation, electrolyte and water balance, acid-base balance etc
What symptom means we need to check for ileus
Vomiting always
could also be pancreatitis
effect of distal ileus (jejunum and more distal parts)
metabolic acidosis
effect of proximal ileus (stomach, proximal duodenal part)
metabolic alkalosis in the beginning and metabolic acidosis follows.
Foreign body in or near stomach causing gas and fluid accumulation. This will activate the tensor receptors which will incr HCl production, which will be vomited. This loss of acids leads to metabolic alkalosis in the beginning. Then lactic acid is produced in anaerobic glycolysis, and met acidosis occurs.
Symptoms of distal ileus (jejunum and more distal parts)
- no eating, empty stomach
- reflux: vomit contains small int fluids = high pH (out of body)
- dehydration
- anaerobic glycolysis=lactic acid ➡️ metabolic acidosis
- miserere: vomiting intestinal contents(feces)
Symptoms of proximal ileus (jejunum and more distal parts)
severe vomiting, dehydration, anorexia, depression, etc.) are more prominent, and the general state of the animal is worsening more quickly, than in case of distal ileus.
Local and general consequences in ileus
1️⃣ INTESTINAL SPASM onto foreign body
2️⃣ as decomposition of irritant begins it will not move aborally STASIS ➡️ GAS ACCUMULATION
3️⃣ aborally intestines are empty and sometimes stuck together
4️⃣ bv are COMPRESSED at ileus site
5️⃣ v/a flow is blocked; HYPOXIA
6️⃣ Lactic acid prod ➡️ NECROSIS, inflammation locally ➡️ bacteria from int into peritoneal cabity ➡️ local/general PERITONITIS
7️⃣ cranial osmotic fluic accumulation in int., water influx (full cran, empty aboral well visible in xray)
8️⃣ water into abd cavity=ASCITES, if bacteria present septic peritonitis
9️⃣ DEHYDRATION: VOMIT water: ca/fe/su, REFLUX:ru, stomach RUPTURE:ep ➡️ HYPOVOLEMIC SHOCK, eq die first
1️⃣0️⃣ K into intestines (HYPOKALEMIA) ➡️ muscle weakness(hypoventilation)➡️ RESP ACIDOSIS ➡️ GENERAL LACTACIDOSIS(also caused by no eating bc pain)
1️⃣1️⃣ HCO3- influx cause METABOLIC ACIDOSIS ➡️ general lactacidosis
1️⃣2️⃣Met +res acidosis = MIXED ACIDOSIS
1️⃣3️⃣ accumulation of bacteria cause ENDOTOXEMIA(gram-) toxin out if bacteria when it dies, to bloodstream causing SEPSIS (or exotoxemia in gram+)
🔺 BILE! Slows down bacterial reprod, but its not prod if animal dont eat! Eq dont have gallbladder!
Others, BLAH Bleeding Lack of CNS function Acute kidney failure Hypoxic liver damage
aims of the examination of pancreatic function
1️⃣ diagnose inflammatory (acute and chronic)
2️⃣ regressive (necrosis, fibrosis, atrophy) changes in the pancreas
3️⃣ neoplastic changes (but these very rarely occur in veterinary patients)
Where are pancreatic enzymes produced
acinar cells, activated in lumen of duodenum, during harmful processes eg inflammation the activation could occur in pancreas if walls are degr. Sep from maturing enzymes
Disruped structure of pancreas
Since the enzymes are now activated inside pancreas, they can harm pancreatic tissue but also high amounts in blood:
1️⃣ cause severe lesions in organs far from the pancreas (lungs, kidney, heart, blood vessels, etc…)
2️⃣ abdominal cavity, peritoneal irritation locally near the pancreas (local peritonitis, damage to the liver, gall blader, omentum, fundus of the stomach, duodenum, spleen, right kidney, colon ascendens, and transversus),
A) or in severe cases generally on the whole surface of the peritoneum (generalised peritonintis).
clinical signs and complications of pancreatitis
anorexia, depression, severe abdominal pain (at the epigastrium,in severe cases at the whole abdominal cavity), severe vomiting (pure water is also vomited!), exsiccosis, sometimes diarrhea, signs of heart failure, vasculitis, kidney failure, liver failure, dyspnoe, sometimes anaemia and/or icterus, sometimes signs of peritonitis, paralytic ileus, septicaemia, DIC, multi organ failure (MOF), abscess formation in the pancreas.
Laboratory examination of pancreatic disease
requires haematological, serum biochemical, cytological and microbiological analysis.
Haematological analysis checks
polycythaemia (due to dehydration)
degradation of red blood cells (membrane damage due to high activated enzyme level in the blood, schysiscytosis, acanthocytosis)
anaemia (in chronic sever cases)
leukocytosis (or leukopenia in case of abscess)
neutrophilia (or -penia), left shift
leukemoid reaction
Serum (plasma) biochemistry checks what
1️⃣ activity or the concentration of pancreatic enzymes is increased in blood
2️⃣ determine glucose concentration, insulin production can be decreased by the organ damage, and diabetes mellitus can develop. (Function can restore after healing)
❓Determination of pancreatic enzymes in the plasma:
alpha-amylase activity
lipase activity
phospholipase-a2 activity
trypsinogene - /trypsine/ concentration (RIA or ELISA methods)
elastase concentration (RIA or ELISA methods)
Best is: pancreas specific lipase (PSL) (ELISA method)
❓Determination of substrates in pancreas:
glucose concentration (IDDM)
concentration of electrolytes (Na+, K+, Cl-) (alteration of isoosmosis, -ionia as a
consequence)
alpha2-macroglobulin concentration (it can be decreased because this protein is able to
bind to active pancreatic enzymes and deactivate them)
alpha1-antitrypsine concentration (it can also be decreased because of the intensive
utilisation, as it is an antiprotease which defends the plasma from trypsine and other
proteases)
triacylglycerol concentration (due to increased lipase activation, and/or IDDM)
Ca2+ concentration (Ca2+ can be depleted into the necrotised fat of the pancreas forming
“soaps”, “liponecrosis pancreatica”)
kidney, liver parameters and total protein, albumin concentration should be measured in
order to diagnose the effects of the complications.
Name the parameters of pancreatitis
1+2 are the best
1️⃣ lipase (+ special lipase for cat and dog - Elisa)
2️⃣ alpha amylase
🔺 these two are not specific or sensitive for pancreatitis (except the special lipase!)
3️⃣ TLI
4️⃣ alpha amylase:creatinine
What cause alpha-amylase activity increase
1️⃣ATLES acute pancreatitis acute 2️⃣ABSURDE Acute/subacute kidney failure 3️⃣FAR FIP 4️⃣LIKER lymphoma, myeloma 5️⃣DAG dm 6️⃣IKKE ileus 7️⃣GAUTE gastroc or int perforation 8️⃣PÅ parotitis 9️⃣CAMPING chronic enteritis
Starch digestion test:
Spectrophotometric method! measure alpha-amylase activity
Starch absorb stain, when alpha-amylase digests it in alkaline environment stain become free. More free stain - more enzyme activity in plasma sample.
p-nitrophenol method:
Spectrophotometric method! measure alpha-amylase activity
p-nitrophenol is bound to oligosacharides. Alpha-amylase splits oligosacharides to smaller parts (disacharids, monosacharids) freeing p-nitrophenol which is yellow. More yellow more alpha-amylase activity!
Lipase isoenzymes
As lipase is produced in stomach and intestines aswell damage to those qill incr the activity of pancreatic lipase. Its also secreted by kidney, but not as much as alpha amylase so incr act is less that that one.
Lipase activity determination by laboratory test, normal range
ELISA: acute pancreatitis in cats and dogs; pancreatic specifc lipase is measured.
Below 800
Turbidimetric method:
spectrophotometer. Reagent contains triolein (lipid) which is split by lipase. This will decr the turbidity of lipid reagent, the time of changed turbidity is prop to lipase activity.
Increased lipase activity is found in case of:
ATLES1️⃣acute pancreatitis ABSURDE 2️⃣acute, subacute kidney failure IDIOTI3️⃣ileus, GIR4️⃣gastric or intestinal perforation chronic enteritis. CD5️⃣ chronic enteritis
Alpha-amylase/creatinin-ratio
- acute pancreatitis incr amylase and lipase activity
- kidney failure and pancreatitis incr creatinine, amylase and lipase
In order to estimate the real problem we can check the excretion of alpha-amylase and creatinin
Lab signs for pancreatitis in Alpha-amylase/creatinin-ratio
Pancreatitis: ⬆️ urine amylase ⬆️ plasma amylase ⬆️ urine creatinin ⬆️↔️ plasma creatinin
Lab signs for kidney failure in Alpha-amylase/creatinin-ratio
kidney failure: ⬇️ urine amylase ⬆️ plasma amylase ⬇️ urine creatinin ⬆️ plasma creatinin
Normal value Alpha-amylase/creatinin-ratio
1-6%, more than 6% means pancreatitis
mechanism of TLI (Trypsine like immunoreactivity)
Expensive, used in cat only
TLI is determined by RIA(radioimmunassay). Marked Ab`s are prod against trypsinogen(same hapten as tryspin): increased radioactivity that can be measured by specific analyser
In case of pancreatitis more trypsinogen or active trypsine can get into the blood stream and the concentration will be 15 times more than the normal value (2,5-5 μg/l). (Usually mostly into duodenum, little in blood)
TLI may not incr in case of pancretitis bc: (imp)
There is a strong defense mechanism against active enzymes entering the bloodstream. This consists of different antiprotease molecules (alpha 1-antitrypisine, alpha 2- macroglobulin) which bind active proteolytic enzymes in the blood and deactivate them. In some individuals this defense can be so strong, that it prevents the increase of TLI level in case of pancreatitis.
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes
Pancreatitis vs. EPI
Pancreatitis
🔺Beautiful but unhappy
🔺 acute and painful! (No time to get “ugly”)
EPI
🔺 ugly but happy
🔺 chrpnic and no pain, lack digestive enzymes