Colic I Flashcards
Two most common causes of GI colic:
- Bad management
2. Intestinal “accidents”
Common management factors that can cause GI colic:
1. 2. 3. 4. 5.
- sand
- high quality
- excessive CHO
- enough water
- fecals/deworming performed
Two most broad causes of non-strangulating lesions:
1.
2.
- Impactions
2. Displacements
Most common places for impactions:
1. 2. 3. 4. 5.
- Pelvic flexure
- right dorsal colon
- transverse colon
- small colon
- gastric impaction
Sand impactions:
Dx methods:
1.
2.
3.
- auscultation
- Fecal float/sink
- Abdominocentesis reveals sand
Sand impactions:
Most common location for impaction?
RIGHT DORSAL COLON
Sand impactions:
Clinical presentation
chronic MASSIVE and HEAVY lump
Cecal Impactions:
Clinical presentation
mild to moderate pain, usually acute but can be chronic.
Cecal Impactions:
- most common type affected?
- Prognosis with sx?
- ___% can rupture
- cecal base/cupula impactions
- excellent
- 57
Fecal impactions: Tx options?
Medical = fluid therapy
Surgical = pelvic flexure enterotomy***
What parasite can cause ascarid GI impaction? when?
Parascaris equorum. 24hrs after deworming
What parasite can cause verminous arteritis that leads to thromboembolic disease induced ischemic bowel?
How do you treat it?
Strongylus vulgaris
anthelmintic/ivermectin
What parasite causes problems at the ileocecal junction? What disease does it cause?
Anoplocephala perfoliata (tapeworm).
Ileocecal intussusception
Bezoars / Enteroliths:
- Name if caused by hair? By fiber?
- Where do they impact?
- trichobezoars. phytobezoars.
2. Transverse colon
Stangulating lesions:
- Usually broadly caused by ______
- cause of ___-___% of SI colic are caused by strangulating lesions
- intestinal “accidents”
2. 58-85%
4 Main types of strangulating lesions:
1.
2.
3.
4.
- Lipoma
- volvulus/torsion of large colon
- EFE (epiploic foramen entrapment
- Mesenteric volvulus
Strangulating Lipoma:
Prognosis?
short term survival in 48-85% of cases
Lipoma:
- Most common location?
- Average age affected?
- Tx via
- > 90% in small intestine
- 14-19 yr
- Exploratory celiotomy to perform resection/anastomosis
Epiploic Foramen Entrapment
- EF aka _____
- Boundaries of EF?
- Foramen of Winslow
2. Caudate process of the liver, Portal vein, Gastropancreatic fold
EFE:
- Usually strangulates the (small/large) intestine?
- Usually (left to right / right to left)?
- Ages?
- Predisposing behavior?
- small
- left to right
- all ages
- cribbing
EFE Surgery:
- surgical technique?
- Main complication?
- manual reduction
2. Portal vein tear
EFE Surgery:
- __x more likely to require repeat surgery.
- EFE associated with
- 4x
2. decreased survival
Volvulus is (common/rare) in large colon?
common
Clinical presentation of Large Colon volvulus?
severe unrelenting pain with rapid CV compromise.
Risk factors for large colon torsion:
1.
2.
3.
- Post parturient mare
- diet change
- recent access to lush pasture
In addition to PE for colic exam, ALWAYS _____
insert NG tube
Rectal Exam: what can be palpated in the middle?
1.
2.
3.
- Aorta = dorsal midline
- Inguinal rings = ventral
- Small colon
Rectal Exam: what can be palpated on the right?
1.
2.
3.
- cecum
- colon
- right ovary
Rectal Exam: what can be palpated on the left?
1.
2.
3.
- left kidney
- spleen
- left ovary
T/F: abdominal ultrasound is a routine part of the colic exam?
T
Things abdominal ultrasound can confirm:
1.
2.
3.
4.
- LDD
- SI distension
- bowel thickening
- free fluid
FLASH technique:
left side:
1.
2.
3.
4.
- Ventral abdomen
- Gastric window
- Spleno-renal window
- Left middle 1/3rd of abdomen
FLASH technique:
right side:
1.
2.
3.
- Duodenal window
- Right middle 1/3rd of abdomen
- cranial ventral thorax
Therapeutic uses for Nasogastric Intubation:
1.
2.
3.
- gastric decompression
- Esophageal choke
- Administration of medication