Odds and Ends Flashcards
The ________ is the site of absorption of
vitamin B12 following release of intrinsic factor from the __________
distal ileum
gastric mucosa
If a needle biopsy fails to confirm diagnosis of a suspicious breast lesion, what is the next step?
excisional biopsy
How are venous return and cardiac output affected under general anesthesia?
both are decreased due to sympathetic (central) blockade
In paradoxical rhinorrhea, CSF leaks through the __________, which provides a connection between the middle ear and nasopharynx.
Eustachian tube
beware of postnasal drip/unusually salty taste in mouth!
Presence of a petrous fracture, the opacification of the normally aereated mastoid air cells, and the presence of air in the middle fossa…
temporal bone fracture leading to CSF leak and paradoxical rhinorrhea
Severance of the chorda tympani nerve (which accompanies CN7) will result in
loss of taste in the anterior 2/3 of the tongue
How do you treat CSF leaks caused by nonpenetrating trauma?
Raise head to lower ICP (and decrease fluid flowing out). If persistent, then serial taps or lumbar drain.
The breast tissue extends over the medial margin of the ________ muscle. Which nerve lies on the lateral aspect of this muscle and may be accidentally injured during breast surgery?
serratus anterior; nerve to the serratus anterior
If there is an absence of blood flow in the celiac artery, what collaterals will supply the stomach?
The superior mesenteric artery will supply
the inferior pancreaticoduodenal branch, which
will form collateral branches with the superior
pancreaticoduodenal branch from the celiac
axis branch (gastroduodenal subdivision). 43e44a45c46d47c48c49i50c51d??
The effects of (proximal/distal) ligation of the hepatic artery are more drastic.
distal. If you ligate proximally, collaterals beyond the obstruction will supply the organ. Note: hepatic arterial ligation is well tolerated; it decreases portal pressure, but should be avoided in obstructive jaundice or portal vein obstruction.
After gastrin or histamine administration, there is a(n) (increase/decrease) in acid secretion.
Increase. Higher in postsurgical patients than normal individuals or gastric ulcer patients.
What are the three phases of digestion? When is most acid secreted?
cephalic (responding to site of food), gastric (swallowed food activates activity), duodenal (intestine responds to chyme)
Most acid secreted in gastric phase; during intestinal phase, vagus nerve via the enterogastric reflex inhibited to stop acid secretion
The anterior esophageal and gastric plexus is formed mainly from the (left/right) vagus nerve.
Left = ANTERIOR Right = POSTERIOR
Excision of something in the submandibular division may lead to damage of the mandibular division of the facial nerve, causing
mandibular deformity; deformity of the angle of the mouth
Why do patients with lymphoma get gout?
Hyperuricemia results from increased cellular turnover in patients with lymphoma
T/F In osteoarthritis, the WBC is increased.
False. Osteoarthritis is a noninflammatory condition. WBC is normal.
Why might damage to the facial nerve damage ability to close the eye?
The palpebral portion of orbicularis oculi is responsible for closing the eyelid. It is innervated by CN7. Inability to close the eye leads to dryness of the conjunctiva that may cause blindness.
Note: levator palpebrae, innervated by CN3, is responsible for opening the eye.
Dermoid cysts are bilateral in __% of cases.
10%
A large amount of seroanguinous drainage
from an abdominal wound that occurs ____ days post-op is usually the result of dehiscence of the abdominal wound closure
5 to 7
Respiratory failure after starting nutritional support is characterized with which nutritional abnormality?
Hypophosphatemia (a hallmark of “refeeding syndrome”)
