- Clinical science
A fundamental part of physical examination is examination of the abdomen, which consists of inspection, auscultation, percussion, and palpation. The examination begins with the patient in supine position, with the abdomen completely exposed. The skin and contour of the abdomen are inspected, followed by auscultation, percussion, and palpation of all quadrants. Depending on the findings or patient complaints, a variety of examination techniques and special maneuvers can provide additional diagnostic information.
- Instruct the patient to lie down and expose the patient's abdomen.
- If your hands are cold, warn the patient prior to palpating the abdomen.
- Note any scars, striae, vascular changes (e.g., ), or protrusions
- Note the general contour of the abdomen
Auscultation of the abdomen should be performed prior to percussion and palpation, as physical manipulation of the abdomen may induce a change in bowel sounds.
- Purpose: to assess bowel sounds
- Auscultate over all four quadrants.
- Listen for bruits.
- Normal findings: : gurgling bowel sounds every 5–10 sec
- Purpose: to determine the size and location of intra-abdominal organs
- Percuss over all four quadrants.
- Normal findings: tympanic sound over air-filled stomach/intestinal sections; muffled sounds over fluid-filled or solid organs (liver, spleen)
- Purpose: to evaluate internal organs and identify any sources of pain (if present)
- Prior to palpation, ask the patient whether they have abdominal pain or tenderness. If so, begin palpation in the non-painful area.
- Observe the patient's face during abdominal palpation, as it is the main indicator of the intensity and location of pain.
- Superficial palpation: to assess for superficial or abdominal wall processes
Deep palpation in all four quadrants: to assess intraabdominal organs (potential signs of )
- Rebound tenderness: abrupt increase in pain when an examiner suddenly releases compression of the abdominal wall. Caused by irritation of the receptors in parietal peritoneum
Abdominal guarding: patient contraction of the abdominal wall muscles during palpation
- Involuntary guarding (also referred to as "rigidity"): involuntary tightening of the muscles due to peritoneal inflammation and is often localized to a specific abdominal quadrant.
- Voluntary guarding: voluntary contraction in order to avoid pain during the examination and is often generalized over the entire abdomen.
Palpation of the liver
- Place the pads of your fingers over the right upper quadrant, approx. 10 cm below the costal margin at the mid-clavicular line. Palpate as you move towards the right upper quadrant and attempt to feel for the edge of the liver. Continue until you feel the liver or reach the costal margin.
- Asking the patient to take a deep breath may facilitate palpation of the liver, as the movement of the diaphragm will move the liver toward your hand.
Palpation of the spleen
- Place the pads of your fingers lateral to the belly button and palpate as you move towards the left upper quadrant. Repeat 10 cm below the left costal margin.
- Asking the patient to lie on their right side may facilitate palpation of an enlarged spleen.
- Palpation of the inguinal lymph nodes: (see )
Abdominal tenderness may be a sign of numerous conditions (see and ).
- Place the middle finger of your non-dominant hand against the abdominal wall. With the tip of the middle finger of your dominant hand, strike the distal interphalangeal joint 2–3 times.
- Start below the breast at the midclavicular line. Percuss as you move your hand downward and note the sound change as you transition from lung (resonant) to liver (dull). Continue until the sound changes again after the inferior margin of the liver.
- Liver scratch test
- Normal findings: : The normal craniocaudal liver size is 7–11.5 cm in women and 8–12.5 cm in men. In most patients, the liver is fully covered by the ribs.
- shifting dullness for or
- CVA tenderness for
Digital rectal examination: to assess for rectal bleeding, fecal impaction, colorectal cancer, and/or to evaluate the prostate
- Positioning: The patient can stand and lean forward against the examination table or can lie down in a lateral position with their legs slightly bent.
- Procedure: With a lubricated, gloved finger, palpate the anal canal and rectum. Assess anal sphincter tone and the size and consistency of the prostate.
- Normal findings: There should be no palpable masses. The prostate should be rubbery and non-tender.
Common causes of abdominal pain (based on location)
|Upper abdomen|| || |
|Mid abdomen|| |
Causes of diffuse or generalized abdominal pain
Causes of acute abdomen