Necropsy Procedures Flashcards
Self-directed portion of ppt
What is a prosector?
person doing the necropsy
What do small animal necropsies normally require?
What is this? What are its characteristics?
Stryker saw - cuts bone
does not cut soft tissue
What are the best gloves for a necropsy?
garden latex gloves
What is the necropsy procedure for histopathology?
specimens should be routinely collected from all major organs in all necropsies
need to be fixed in 10% neutral buffered formalin - will stop autolysis
What is the tissue:formalin ratio?
1:10
What are common postmortem changes?
rigor mortis
liver mortis (hypostatic congestion)
hemoglobin imbibition
pseudomelanosis
What is liver mortis i.e. hypostatic congestion?
gravitational pooling of blood
- results to intense dark reddish coloration of the organs and tissues at the dependant side of the cadaver
What is hemoglobin imbibition?
pinkish to reddish coloration due to lysis of rbcs
most evident on intimal surface of large arteries and other surfaces of light colored organs
What is pseudomelanosis?
greenish gray to black coloration of tissue due to the action of bacteria on hemoglobin forming hydrogen sulfide
What type of postmortem change is this?
liver mortis - hypostatic congestion
What type of postmortem change is this?
liver mortis - hypostatic congestion
What type of postmortem change is this?
liver mortis - hypostatic congestion
T/F: It is extremely important to have a good history
TRUE
T/F: Prosectors do not perform an external exam during a necropsy - only want to see internal issues
FALSE
What is the standard necropsy technique - gross dissection procedure?
What is the initial skin incision and skin reflection of a necropsy?
What must you remove to see the buccal cavity?
the tongue
What should remain attached at the thoracic inlet?
freed tongue, esophagus, and trachea
What is hemoperitoneum?
blood in the peritoneal cavity
What is ascites?
non-blood fluid in the peritoneal cavity
What kind of fluid is this in the abdominal cavity?
to me, it looks serosanguineous
A normal liver should not extend much beyond the _____
edge of the last rib
What is a common consequence of volvulus?
bloating
What is volvulus/torsion? What does it lead to?
involves a twisting of the mesenteric attachments of the stomach and/or intestines
ischemic necrosis
What is intusseption?
when the intestine telescopes in on itself
In a necropsy, how do you open the thoracic cavity?
use bone shears at costo-chondral junction
What kind of incision is made into the heart to open it? Which side of the heart?
v-shaped incision; right side
In what way should the liver be cut to expose any lesions that may be below the surface?
bread-loafed
How should the kidneys be cut to differentiate between the left and right?
right: right angle
left: longitudinally
What is the calvarium?
the brain case
How do you remove the head?
use your knife to sever all attachments at the atlanto-occipital joint
T/F: It is not uncommon for necropsy finds to be inconclusive as to cause of death, or even as to cause the clinical syndrome
TRUE
