Topic Highlight
Copyright ©2012 Baishideng.
World J Gastrointest Pharmacol Ther. Apr 6, 2012; 3(2): 7-20
Published online Apr 6, 2012. doi: 10.4292/wjgpt.v3.i2.7
Table 1 Non-genetic risk factors for gallbladder stones
Age
Female gender
High-calorie, low-fiber diet
High-carbohydrate diet, dietary glycemic load
Obesity
Physical inactivity
Rapid weight loss/surgery for obesity
Total gastrectomy with lymph node dissection
Spinal cord injury
Infections: enterohepatic Helicobacter species, malaria
Biliary strictures
Drugs: estrogens, calcineurin inhibitors, fibrates, octreotide, ceftriaxone
Total parenteral nutrition
Duodenal diverticulum
Extended ileal resection (black pigment stones)
Vitamin B12/folic acid deficient diet (black pigment stones)
Pancreatic insufficiency
Cholangitis (brown pigment bile duct stones)
Table 2 Major features of the uncomplicated biliary colic
PathogenesisVisceral pain caused by the impaction of the stone in the cystic duct or the ampulla of Vater, followed by distension of the gallbladder and/or biliary tract with activation of visceral sensory neurons[161]
OnsetNot exclusively postprandial, typically intermittent
IntensityMean visual analogue scale of 9 cm on a 0-10 cm scale
LocalizationMost frequently right upper quadrant of the abdomen and/or the epigastrium (representative dermatomes T8/9)
DurationGenerally longer than 15-30 min. Can last several hours and be associated non-specific symptoms of indigestion
RadiationAngle of the right scapula and/or shoulder (about 60% of cases), retrosternal area (less than 10% of cases)
Associated featuresUrgency to walk[162] (two-third of patients), nausea or vomit[42,161,162]
ReliefIf the stone returns into the gallbladder lumen, passes through the ampulla of Vater into the duodenum or migrates back to the common bile duct[26]
First-line therapyFast-acting narcotic analgesics (meperidine[163]) or non-steroidal anti-inflammatory drugs (NSAIDs) (im or iv ketorolac or ibuprofen po) which could also reduce the risk of evolution towards acute cholecystitis[164-167]
Second-line therapyAntispasmodic (anticholinergic) agents like hyoscine (scopolamine). Less effective than NSAIDs[164]
RecommendationsFasting, to avoid release of endogenous cholecystokinin and further gallbladder contraction
Table 3 Indications for “prophylactic” cholecystectomy (i.e., asymptomatic gallstone patients bearing a high risk of becoming symptomatic)
Children (because they are exposed to the long-term physical presence of stones[58])
Morbid obese patients undergoing bariatric surgery (high risk to become symptomatic during rapid weight loss[62])
Increased risk for gallbladder cancer[63]
Patients with large gallstones (greater than 3 cm)[64,65]
A “porcelain” gallbladder[66] or gallbladder polyps rapidly growing or larger than 1 cm
Native Americans with gallstones (risk of gallbladder cancer 3 to 5 percent)[67]
Gallstone patients with sickle cell anemia (formation of calcium bilirubinate gallstones due to chronic hemolysis. Patients may become symptomatic with recurrent episodes of abdominal pain[68])
Coexistence of small gallstones and gallbladder dysmotility (increased risk of pancreatitis[47])
Table 4 Major features of the complicated biliary colic
Additional findings compared to uncomplicated biliary painLeukocytosis, nausea, jaundice, vomiting, fever
Underlying potential complicationsAcute pancreatitis, acute cholecystitis, biliary obstruction and cholangitis, gallbladder perforation, abscess formation, mucocele of the gallbladder
DecisionQuick admission to the hospital
TherapiesAntibiotics or invasive procedures with or without surgical procedures (Figure 1)
Early laparoscopic cholecystectomy recommended between 2 and 4[168] in mild and moderate acute cholecystitis