Transducer: Curvilinear Ultrasound Probe (Ideal Choice) or Phased Array Probe.
You may need to use a Linear Probe for appendicitis and pediatric applications
Preset: Abdomen
Machine Placement: Position the ultrasound machine on the right side of the patient with the screen facing you. With this configuration you can face both the patient and the ultrasound screen, scanning with your right hand and manipulating buttons on the machine with the left hand.
Since there are so many organs in the abdominal cavity, it is probably easiest to think of your differential in terms of abdominal quadrants/areas. Below is a list and figure showing some common abdominal diagnoses relative to the abdominal regions.
However, keep in mind that these diagnoses are not confined to just these regions. For example, diverticulitis most commonly presents as left lower quadrant pain, but sometimes can cause pain on the right lower quadrant.
This list and figure are just starting points for you to understand the most common abdominal pathologies and where they usually present.
Abdominal Pain:
Right upper quadrant: cholelithiasis, hepatitis, evaluation for free fluid, kidney stones (also flank pain)
Right lower quadrant: appendicitis, intussusception, psoas abscess, inguinal hernia
Left upper quadrant: splenomegaly, evaluation for free fluid, kidney stones (also flank pain)
Left lower quadrant: diverticulitis, small bowel obstruction, inguinal hernia
Epigastric: AAA, pancreatitis, SBO (can also be generalized)
Abdominal Trauma: Evaluation for abdominal free fluid (hemoperitoneum)
Abdominal Pathology by Region
In this post, we will cover the most common Point of Care Ultrasound (POCUS) applications of abdominal ultrasound including: Hepatobiliary, Spleen, Appendix, Free Fluid Detection, Bowel Emergencies (small bowel obstruction/pneumoperitoneum), and Pediatric specific abdominal applications (pyloric stenosis, intussusception)