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51 Cards in this Set

  • Front
  • Back
Nociceptors are located within _____ and ____
mucosa/muscularis of hollow viscera

serosal surface of peritoneum and mesentary
Nociception is mediated by ____ fibers and _____ fibers
A-delta fibers

C-fibers
A-delta fibers are located in skin and muscle and are ____ conducting fibers associated with _____ types of pain
rapidly-conducting

sharp, sudden and well-localized
C-fibers are located in muscle, periosteum, mesentary, peritoneum, and viscera and are ____ conducting fibers associated with ____ types of pain
slow-conducting

dull, burning and poorly localized pain with slower onset and longer duration
_____ is the primary type of nociception for the abdominal viscera
C-fiber
Afferent neurons in the GI tract discharge in response to _______
luminal chemicals

mechanical deformation of terminal fields
cytokines/inflammatory mediators
endocrine cells
mast cells
Efferent neurons in the GI tract have what function?
influence secretion, motility, and possibly supply blood vessels directly
First-order neurons innvervating the viscera carry information to the ______ and synapse at the _____
thoracolumbar SNS
dorsal horn of the spinal cord
Second-order neurons _______ and ascend the ______ to synapse at the _____ before proceeding to the ______
cross

spinothalamic / spinoreticular tracts

thalamus

limbic / somatosensory areas
Name the 3 types of abdominal pain
Visceral
Somatic
Referred
Visceral pain is ______ in quality as a result of ______
dull and poorly-localized to the midline

bilateral spinal cord transmission of sensory afferents by the organs
A patient will describe VISCERAL adbominal pain as ______ in quality; secondary autonomic effects of visceral pain include
cramping, burning, or gnawing

sweating, restlessness, nausea, vomiting
SOMATIC pain is described as ______ and due to
more intense and more precisely localized than visceral

irritation of the parietal peritoneum
An excellent example of somatic pain is
the early vague periumbilica visceral pain of appendicitis eventually localizes to McBurney's point with increased peritoneal irritation
SOMATIC pain is generally worsened by
movement / coughing
REFERRED abdominal pain is due to
convergence of visceral afferent neurons with somatic afferent neurons from different anatomical regions on second-order neurons in the same spinal cord segment
Two stimuli of VISCERAL pain include
mechanical
chemical
The primary stimulus in MECHANICAL-caused induction of visceral pain is _____, NOT _____!
stretching

cutting, tearing or crushing
Examples of mechanically-induced visceral pain include
Stretching things

rapid distention (obstruction)
forceful muscular contractions (biliary or renal colic)
mesenteric torsion (cecal volvulus)
traction on mesentary or vessels
Chemical stimuli in VISCERAL pain include
local mechanical, inflammatory, ischemic, noxious thermal or radiation that releases certain subtances (H, K, histamine, substance P, etc)
Chemical-induced visceral pain is basically due to
Accumulation of nocireactive substances which decrease the pain threshold by alterting the microenvironment of the injured tissue
Changes in location during the H/P of abdominal pain may indicate
progression from visceral to somatic pain (ie appendicitis)
Aggravating/alleviating factors related to the following:

peritonitis
renal colic
biliary colic
duodenal ulcer
gastric ulcer
pt lies motionless
pt listless and writhes
triggered by fatty-food ingestion
pain alleviated by meals
exacerbated with eating
Pts who are writhing and listless most likely have _____ pain
visceral pain
Pts lying still and reluctant to move in obvious distress most likely have ____
peritonitis
Hyperactive bowel sounds indicate ______, while hypoactive indicate ____
obstruction

ileus
Normal liver span is _____
10-12cm at MCL
When doing an abdominal exam, always begin _______
at the point of LEAST TENDERNESS
Serologic eval in abdominal pain should include
CBC w/ diff, UA, BMP
The imaging study of choice for hepatobiliary, kidneys, and pelvic organs is ____
US
Mechanisms of dysphagia include
Dysmotility
Mechanical
GERD
Mechanical causes of dysphagia include
Narrowing of esophageal lumen with dysphagia severity relating to the degree of obstruction, associated esophagitis, and type of food
Defects in oral preparation leading to oropharyngeal dysphagia include
disruption in the coordination of jaw, facial and buccal muscles, lips, saliva, teeth, etc. that impede the break down of food and mixing with saliva
Defects in oral transfer leading to oropharyngeal dysphagia include
inhibition of the tongue moving upwards and backwards to propel bolus into esophagus
In oropharyngeal dysphagia, the pt is often aware that
bolus has not left the oropharynx and will localize discomfort to the cervical esophagus
Complications of oropharyngeal dysphagia include
aspiration or nasal regurgitation (coughing during meal)

hoarseness (d/t recurrent laryngeal nerve dysfunction or instrinsic muscle disease leading to vocal cord impairment)

dysarthria, nasal speech, pharyngonasal regurgitation d/t weakness of soft palate or pharyngeal mm
Localization in esophageal dysphagia is
substernal
3 crucial questoins to ask in the eval of esophageal dysphagia include
Type of food causes the sxs?
Is the dysphagia intermittent or progressive?
Does the pt have heartburn?
Dysphagia to both solids AND liquids indicates a(n) ...
esophageal dysmotility disorder
Dysmotility disorders are often relieved by ...
repeated swallowing
raising arms over head
valsalva maneuver
Achalasia is
painless regurgitation of undigested foods, usually at night, with wt loss
Spastic motility disorders are characterized by
chest pain with hot or cold sensitivities
Scleroderma is characterized by
accompanied by severe GERD and dysphagia; generally related to peptic strictures
Dysphagia to SOLIDS only indicates ...
mechanical obstruction
Episodic and nonprogressive dysphagia is usually _____ and epitomized by
benign

"steakhouse syndrome" (hastily eating a meal with or without EtOH)
Progressive dysphagia may indicate
mechanical stricture (severity worsens with worsening obstruction); pt may regurgitate to relieve food impaction
Benign (peptic) strictures are characterized by
Long-standing hx of GERD
No wt loss
Malignant strictures clinically look how?
Old pts with rapidly-progressive dysphagia without reflux

anorexia leading to profound wt loss beyond severity of sxs
Odynophagia is ...
pain with swallowing due to severe inflammatory process involving the esophageal mucosa
Globus sensation is
feeling a lump or tightness in throat unrelated to swallowing

most common in middle-aged women

psych factors likely involved
A key important HX in diagnosing noncardiac chest pain
triggered by hot or cold foods