GIT Match (2)
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Questions and Answers

Match the following causes of vagal indigestion with their descriptions:

Extension from oral & esophageal infections = Infection spread leading to reticulum penetration Grain overload = Increased carbohydrate leading to ruminal lactic acidosis Sudden change to high CHO diet = Rapid dietary transition causing bacterial overgrowth Overgrowth of gram + bacteria = Excessive bacteria altering ruminal pH

Match the sequelae of grain overload with their outcomes:

Bacterial rumenitis = Inflammation caused by Fusobacterium necrophorum Liver abscesses = Potential rupture into vena cava resulting in embolism Mycotic rumenitis = Infarcts leading to systemic issues Ulcers on the rumen pillars = Damage resulting from grain overload complications

Match the conditions with their associated symptoms:

Acute gastric dilation = Functional obstruction of cardia and pylorus Volvulus = Rotation on its mesenteric axis causing gas accumulation Abomasal displacement = Common GI disorder requiring surgical intervention Right abomasal displacement = Occurs in cows and calves, less common than left

Match the types of abomasal displacement with their characteristics:

<p>Left abomasal displacement = Common in older high-producing dairy cows Right abomasal displacement = 15% occurrence rate in cows and calves Postcalving period = Associated with increased risk of left displacement Seldom fatal = Characteristic of left abomasal displacement surgeries</p> Signup and view all the answers

Match the following gastric conditions with their primary causes:

<p>Gastric ulcers = High gastric acidity Gastritis = C.septicum infection Parasitic diseases = Haemonchosis Gastric dilation and rupture = Fermentable CHO</p> Signup and view all the answers

Match the following symptoms with the related gastric condition:

<p>Hematemesis = Gastric ulcers Abdominal pain = Gastritis Melena = Gastric ulcers Anemia = Gastric ulcers</p> Signup and view all the answers

Match the causes of gastric ulcers with their descriptions:

<p>Local mucosal injury = Damage due to foreign substances or trauma Steroids &amp; NSAIDs = Medication related irritation Local ischemia = Decreased blood flow leading to stress ulcers Helicobacter = Bacterial infection causing gastric issues</p> Signup and view all the answers

Match the following gastric conditions with their descriptions:

<p>Gastric bots = Parasitic infection in equine Gastric dilation and rupture = Acute condition related to carbohydrate fermentation Abomasal impaction = Low-quality roughage and water intake Chronic gastritis = Long-term inflammation often linked with Helicobacter</p> Signup and view all the answers

Match the following species with their gastric conditions:

<p>Cattle = Gastritis Horses = Gastric dilation and rupture Dogs &amp; Cats = Chronic gastritis Ruminants = Parasitic diseases</p> Signup and view all the answers

Match the part of the forestomach with its description:

<p>Rumen = Largest compartment involved in fermentation Reticulum = Honeycomb structure that traps foreign objects Omasum = Absorbs water and nutrients Stratified squamous epithelium = Lining of the forestomachs</p> Signup and view all the answers

Match the type of bloat with its characteristics:

<p>Primary bloat = Caused by excess soluble proteins in feed Secondary bloat = Results from obstruction of the eructation mechanism Frothy bloat = Gases trapped in bubbles within rumen contents Free gas bloat = No foam, just excessive gas in the rumen</p> Signup and view all the answers

Match the cause of bloat with its description:

<p>High grain diets = Leads to less salivation and foamy bloat White Clover = Common plant associated with frothy bloat Alfalfa = Another legume contributing to gas formation Legumes = Plants that can lead to primary bloat due to soluble proteins</p> Signup and view all the answers

Match the condition related to foreign bodies with its consequence:

<p>Trichobezoar = Formation of hairballs in the digestive tract Phytobezoars = Result from ingestion of plant material Lead poisoning = Can cause severe digestive issues Sharp metals = May lead to traumatic reticulopericarditis</p> Signup and view all the answers

Match the symptom of bloat with its description:

<p>Abdominal distension = Enlargement of the rumen due to gas buildup Bloat line = Marking on the esophagus indicating congestion Congestion of head &amp; neck = Pooling of blood in cranial regions Cardiac arrest = Result of vena cava compression from pressure</p> Signup and view all the answers

Match the digestive movement with its function:

<p>Muscular movements = Mix and move layers within the rumen Regurgitation = Brings solid bits back for re-mastication Eructation = Process of expelling gas from the rumen Mixing slurry = Combines solid and liquid feed particles</p> Signup and view all the answers

Match the type of ruminal content with its characteristic:

<p>Slurry = Mixture of solid feed with rumen fluid Liquid portion = Contains dissolved nutrients and gases Solid/lighter bits = Material that can be regurgitated Bits of straw/hay = Common components of ruminal contents</p> Signup and view all the answers

Match the condition related to bloat with its type:

<p>Localized reticulitis = Infection in the reticulum due to sharp objects Traumatic Reticulopericarditis = Involves penetration of the diaphragm Vagal indigestion = Inhibition of rumen motility due to nerve damage Obstruction in esophagus = Physical blockage preventing gas release</p> Signup and view all the answers

Match the intestinal conditions with their definitions:

<p>Atresia = Absence of a normal opening Intussusception = Telescoping of one segment of bowel into another Hernia = Protrusion of an organ through an opening Volvulus = Rotation of the organ around its long axis</p> Signup and view all the answers

Match the types of enteritis with their specific areas affected:

<p>Enteritis = Inflammation of the small intestine Typhlitis = Inflammation of the cecum Colitis = Inflammation of the large intestine Enterocolitis = Inflammation of all intestines</p> Signup and view all the answers

Match the types of diarrhea with their descriptions:

<p>Diarrhea = Increase in stool mass, frequency, and/or fluidity Dysentery = Painful, bloody diarrhea Malabsorption = Defective digestion/absorption Osmotic diarrhea = Exerted by luminal solutes</p> Signup and view all the answers

Match the sequealae with their effects:

<p>Strangulation = Cutting off the venous return Adynamic ileus = Bowel obstruction Perforation = Breakthrough of the intestinal wall Shock and septicemia = Severe systemic infection</p> Signup and view all the answers

Match the types of hernias with their descriptions:

<p>Diaphragmatic hernia = Through diaphragm Ventral hernia = Anterior abdominal wall protrusion Umbilical hernia = Involves the umbilicus Scrotal hernia = Involves protrusion into the scrotum</p> Signup and view all the answers

Match the types of intestinal inflammation with their causes:

<p>Catarrhal = Associated with viral diseases Hemorrhagic = Can be caused by bacterial diseases Proliferative/hyperplastic = May result from parasitic infections Granulomatous = Often linked to noninfectious entities</p> Signup and view all the answers

Match the pathogenesis of diarrhea with their descriptions:

<p>Hypersecretion = Excessive intestinal fluid secretion Exudation = Increased capillary permeability Malabsorption = Impaired digestion/absorption Osmotic diarrhea = Caused by luminal solutes</p> Signup and view all the answers

Match the inflammation types with the corresponding locations:

<p>Gastroenteritis = Inflammation of stomach and small intestines Proctitis = Inflammation of the rectum Enteritis = Inflammation of intestines Typhlitis = Inflammation of the cecum</p> Signup and view all the answers

Study Notes

Forestomachs

  • The rumen, reticulum, and omasum make up the forestomachs
  • They are lined by stratified squamous epithelium
  • Examination of plant contents in the rumen can reveal toxicities

Ruminal Tympany (Bloat)

  • Over-distension of the rumen and reticulum with fermentation gases
  • Primary Bloat (Frothy Bloat):
    • Gases trapped in bubbles within the rumen
    • Caused by:
      • Plants with high soluble proteins (e.g., white clover, alfalfa, red clover) which trap bubbles
      • High grain diets which decrease salivation (saliva has anti-foam properties)
  • Secondary Bloat (Free Gas Bloat):
    • Blockage in the eructation mechanism
    • Obstruction in the esophagus
    • Vagal indigestion: ruminal motility inhibited due to vagal nerve damage
  • Why do animals with bloat die?
    • Pressure from expanding rumen compresses the thorax
    • Compression of the vena cava leads to poor venous return and cardiac arrest.
    • Gross findings:
      • Abdominal distension
      • Marked congestion of head and neck
      • "Bloat line" on the esophagus at the thoracic inlet

Ruminal Contents & Foreign Bodies

  • Layers of different substances develop within the rumen and are mixed by muscular movements
  • Slurry contains bits of straw/hay mixed with liquid
  • Solid/lighter bits are regurgitated for remastication
  • Foreign bodies:
    • Trichobezoar (hair balls)
    • Phytobezoars (plant balls)
    • Lead substances (poisoning)
    • Sharp metals

Fate of Sharp Metals

  • Sharp metallic objects deposited directly into the reticulum
  • Consequences:
    • Localized reticulitis
    • Penetrated reticulum, diaphragm, and pericardial sac (Traumatic Reticulopericarditis)
    • Penetrated reticulum damaging the vagus nerve (Vagal indigestion)

Inflammation of the Forestomach

  • Causes:
    • Extension from oral and esophageal infections
    • Grain overload (ruminal lactic acidosis)
  • Pathogenesis:
    • Sudden change to high carbohydrate diet leads to overgrowth of gram-positive bacteria
    • Increased lactic and dissociated fatty acids lower pH
    • Ruminal atony and damage to mucosa
    • Fluid moves from blood into the rumen
  • Outcome:
    • Acute dehydration, acidosis, and endotoxemia
    • Sudden death

Sequelae of Ruminal Inflammation

  • Bacterial rumenitis:
    • Fusobacterium necrophorum
    • Healed ulcers ("stellate scars")
  • Liver abscesses:
    • Can rupture into vena cava leading to fatal septic embolism
  • Mycotic rumenitis:
    • Well-demarcated, circular hemorrhagic infarcts
    • Can become systemic, causing placentitis and abortion

Acute Gastric Dilation and Volvulus (GDV)

  • Occurs predominantly in large dog breeds
  • Causes:
    • Large meal (dry or highly fermentable)
    • Failure of eructation and pyloric outflow
  • Pathogenesis:
    • Gas accumulation leads to functional obstruction of cardia and pylorus
    • Dilation occurs, followed by rotation on its mesenteric axis (volvulus)
  • Consequences:
    • Compression of the diaphragm and vena cava leading to decreased venous return and cardiac output

Abomasal Displacement

  • Left abomasal displacement:
    • Mostly in dairy cows, especially older, high producers
    • Common postcalving period
    • Usually requires surgery
  • Right abomasal displacement:
    • Less frequent, but occurs in cows and calves
    • Usually on the right side

Gastric/Abomasal Impaction

  • Causes:
    • Low-quality roughage
    • Low water intake
    • Poor mastication
    • Vagal nerve damage ("vagus indigestion")
    • Pyloric stenosis

Gastric Dilation and Rupture

  • Occurs in horses
  • Causes:
    • Fermentable carbohydrates
    • Secondary to intestinal obstruction
    • Equine dysautonomia
  • Distinction:
    • Ant-mortem rupture from post-mortem rupture

Gastric Ulcers

  • Important but less common than in humans
  • Mechanism:
    • Imbalance between acid secretion and mucosal protection
    • Epithelial necrosis leads to erosion, ulceration, bleeding, and perforation

Causes of Gastric Ulcers

  • Local mucosal injury
  • High gastric acidity
  • Local ischemia (stress ulcers)
  • Steroids and NSAIDs (aspirin)
  • Helicobacter (bacterial infection)

Signs of Gastric Ulcers

  • Hematemesis (vomiting blood)
  • Melena (dark, tarry stool)
  • Anemia
  • Abdominal pain

Gastritis

  • Inflammation of the stomach
  • Ruminants:
    • Clostridium septicum (Braxy or bradsot)
    • Clostridium perfringens type A (Abomasitis with ulceration)
    • Mycotic infections
  • Dogs and Cats:
    • Uremia
    • Chronic gastritis and Hypertrophy
    • Helicobacter

Parasitic Diseases

  • Ruminants:
    • Haemonchosis
    • Ostertagiosis (lymphoid hyperplasia)
    • Trichostrongylosis
  • Equine:
    • Gastric bots
    • Trichostrongylosis
    • Draschia megastoma
    • Habronema

Congenital Anomalies

  • Atresia:
    • Absence of a normal opening
    • Atresia ani: Absence of an anus

Intestinal Displacements and Malposition

  • Hernia: Protrusion of an organ through a natural or artificial opening
    • Internal:
      • Diaphragmatic hernia (through diaphragm)
    • External:
      • Ventral hernia
      • Umbilical
      • Scrotal
  • Sequelae of hernias:
    • Strangulation: Interference with blood flow
    • Adynamic ileus: Lack of bowel movement
    • Perforation

Torsion and Volvulus

  • Torsion: Rotation of the organ around its long axis
  • Volvulus: Twisting of the organ on its mesenteric axis

Intussusception

  • Telescoping of one segment of bowel into another adjacent section

Enteritis

  • Inflammation of the intestines
  • Types:
    • Enteritis: Small intestine
    • Typhlitis: Cecum
    • Colitis: Large intestine
    • Enterocolitis: All intestines
    • Gastroenteritis: Stomach and small intestines
    • Proctitis: Rectum

Diarrhea and Dysentery

  • Diarrhea: Increase in stool mass, frequency, and/or fluidity
  • Dysentery: Painful, bloody diarrhea

Pathogenesis of Diarrhea

  • Malabsorption: Defective digestion/absorption
  • Osmotic diarrhea: Exerted by luminal solutes
  • Hypersecretion: Excessive intestinal fluid secretion induced by enterotoxins
  • Exudation: Increased capillary or epithelial permeability

Types of Enteritis Based on Gross Appearance

  • Catarrhal: Viral diseases
  • Hemorrhagic: Bacterial diseases
  • Fibrinous/fibrinonecrotic: Mycotic diseases
  • Ulcerative: Protozoal diseases
  • Proliferative/hyperplastic: Parasitic diseases
  • Granulomatous: Noninfectious disease entities

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Digestive System Lecture II PDF

Description

Explore the anatomy of the forestomachs in ruminants, focusing on the rumen, reticulum, and omasum. Understand the causes and effects of ruminal tympany (bloat), including the differences between primary and secondary bloat. This quiz covers essential veterinary concepts related to ruminant physiology.

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