L5: Acute Abdominal Pain: pt 1 Flashcards
Life threatening causes of abdominal pain that must be ruled out
Abdominal aortic aneurysm Abdominal aortic dissection GI perforation Incarcerated hernia Acute bowel obstruction Mesenteric ischemia Ectopic pregnancy Placental abruption Splenic rupture
Top 10 abdominal pain diagnoses in the ED
Appendicitis Biliary tract disease Small bowel obstruction GYN disease Pancreatitis Renal colic Perforated ulcer Cancer Diverticular disease Non-specific abd pain
Red flags in history
Age >65 Alcoholism Immunocompromised Cardiovascular disease Comorbidities Prior abdominal surgery→ always ask Recent GI instrumentation Early pregnancy
Red flags on physical exam
Rigid abdomen
Signs of shock
Involuntary guarding
Red flags in characteristics of pain
Acute onset
Significant pain at onset
Pain followed by emesis
Constant pain for <2 days
Gallbladder refers pain to
Right sub-scapular
Perforated duodenal ulcer refers pain to
Shoulders
Ureteral obstruction refers pain to
Testicles
MI refers pain to
epigastric
jaw
neck
upper extremity
GYN issues refer pain to
Low back
Visceral pain vs parietal pain: character
Visceral pain: dull, achy, colicky
Parietal pain: sharp
Visceral pain vs parietal pain: localization
Visceral pain: poorly localized
Parietal pain: well localized
Visceral pain vs parietal pain: causes
Visceral pain: Distention, ischemia, inflammation/spasm of hollow organ
Parietal pain: Peritoneal irritation, ischemia, inflammation/stretching of parietal peritoneum
Buzzword: restless, can’t sit still
Renal colic
Buzzword: laying perfectly still/supine
Peritonitis
Buzzword: increased respiratory rate
metabolic acidosis
pain
Buzzword: hypotension
sepsis
GI bleed
Buzzword: bruits heard on auscultation
Abdominal Aortic Aneurysm
Buzzword: hypoactive bowel sounds
peritonitis
small bowel obstruction
Buzzword: hyperactive bowel sounds
blood/inflammation in the GI tract
Buzzword: lower quadrant or hypogastric pain
always do a testicular or pelvic exam
On physical exam, always
Listen to heart for afib Listen to lungs for pneumonia Check for CVAT hepatosplenomegaly abdominal hernias
Initial diagnostics for acute abdominal pain
CBC with differential BMP/ CMP AST, ALT, Alk Phos Total Bilirubin Lipase/amylase Lactic Acid UA Urine Pregnancy in females Stool guaiac
Plain films can show
Dilated bowel loops air-fluid levels free air constipation foreign body
CT without contrast is for
renal stone
obstruction
CT with IV contrast is for
Ischemic bowel
diverticulitis
peritonitis
abdominal aortic aneurysm
CT with oral contrast can be used for
children
skinny adults
Ultrasounds can show
gallbladder free fluid renal ovaries testicles
Monitor for signs of sepsis and shock such as
fever
tachycardia
hypotension
AMS
URGENTLY refer to surgery if….
Obstruction Perforation Peritonitis Ischemic bowel Dissection
Rapid symptom evolution:
- Increasing tenderness and rigidity
- Pain is severe, is it out of proportion to exam
Who might present with vague, nonspecific symptoms
Elderly
DM
Immunocompromised
Causes of perforation of the GI tract
Inflammatory changes→gallbladder,
appendix→ “spontaneous”
Bowel obstruction
Trauma
Instrumentation
Perforation presentation
Depends on organ affected and contents releases→ air, stool, gas
Localized tenderness followed by diffuse pain
+/- Pain relief followed by peritonitis
Most common: <10 years or >50 years