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Bedside Biliary Ultrasound

By ACEP Now | on November 1, 2010 | 0 Comment
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Learning Objectives

After reading this article, the physician should be able to:

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  • Describe the indications for performing bedside biliary ultrasound.
  • Perform bedside biliary ultrasound.
  • Utilize ultrasound to assist in the diagnosis of acute cholecystitis.

Questionnaire Available Online

This educational activity should take approximately 1 hour to complete. The CME test and evaluation form are located online at www.ACEP.org/focuson.

The participant should, in order, review the learning objectives, read the article, and complete the CME post-test/evaluation form to receive 1 ACEP Category 1 credit and 1 AMA/PRA Category 1 credit. You will be able to print your CME certificate immediately.

The credit for this CME activity is available through Nov. 30, 2013.

Hepatobiliary disease is listed in the differential diagnosis of patients presenting to the emergency department with abdominal pain. Patients with right upper quadrant (RUQ) pain associated with fever, nausea, vomiting, and/or jaundice may have hepatobiliary disease as the cause and a bedside biliary ultrasound will assist in making this diagnosis.

Sonographic evaluation of the biliary system is a core emergency ultrasound application according to the 2008 American College of Emergency Physicians Policy on Emergency Ultrasound.

Clinical Indications for Performing a Biliary Ultrasound

The main indication for biliary emergency ultrasound is rapid identification of sonographic markers of acute cholecystitis.

Performing a Biliary Ultrasound

Anatomic landmarks and considerations. The liver is an intraperitoneal structure located in the RUQ of the abdomen. The liver is bordered superiorly by the diaphragm, inferomedially by the duodenum and head of the pancreas, and inferiorly by the gallbladder, hepatic flexure and ascending colon, and the superior pole of the right kidney. The gallbladder lies on the inferior surface of the liver between the right and left lobe of the liver. It is bordered inferiorly by the hepatic flexure and transverse colon and medially by the duodenum.

The liver has a characteristic sonographic appearance and serves as an echo-friendly window for imaging the gallbladder. The gallbladder appears as a cystic oval-shaped organ whose wall may contain normal anatomic variants such as folds, septations, and – when located at the fundus – a Phrygian cap. The main lobar fissure (MLF) appears to connect the gallbladder on long axis view to the portal vein and altogether gives a characteristic “exclamation point” appearance. The median hepatic vein divides the liver into right and left lobes and runs with the MLF. The hepatic artery and common bile duct (CBD) lie anterior to the portal vein, and the three together make the portal triad.

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Topics: Abdominal and GastrointestinalClinical ExamClinical GuidelineCMECritical CareDiagnosisEducationEmergency MedicineEmergency PhysicianImaging and UltrasoundPainProcedures and Skills

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