Clinical Skills · Assessment of the Abdomen

Physical Assessment

10 min read

On this page 9 sections

In 30 seconds
Why this matters
The college version
Eli explains
Worked example
Key takeaway
Check yourself
Study tools
Sources & references

In 30 seconds

Abdominal physical assessment is the systematic examination of the abdomen using the four classic techniques — , , , and — in a specific order. The order is not arbitrary: you auscultate before you percuss or palpate because pressing on the abdomen can change bowel sounds, and you want to hear the bowel's natural activity before you disturb it. The assessment also begins well before you touch the patient: a careful health history often reveals more than the physical exam, and simply looking at the abdomen (inspection) provides a surprising amount of information. Throughout the exam, the goals are to identify tenderness, masses, distention, organ enlargement, and abnormal sounds; to compare findings with the patient's baseline; and to communicate anything concerning to the provider. Like all physical assessments, the abdominal exam is performed within the nurse's scope of practice and institutional policy, and findings are interpreted in the context of the whole patient, not in isolation.

Why this matters

Abdominal symptoms are common, and the abdominal exam is one of the most frequently performed nursing assessments — from routine admission exams to daily rounds to the rapid evaluation of a patient with acute pain. The exam has real safety consequences: recognizing the difference between a soft, non-tender abdomen and a rigid, tender one can be the difference between a routine report and an emergency response. Knowing the correct sequence prevents a common error — percussing or palpating first, then hearing bowel sounds you yourself altered. A skilled abdominal assessment also builds trust; patients who feel rushed or hurt during an exam are less likely to report symptoms, so technique, warmth, and communication are part of the skill, not extras.

The college version

Core Concepts

Before touching the abdomen, gather the history: the location, onset, and character of any pain (ask the patient to point with one finger); what makes it better or worse; associated symptoms such as nausea, vomiting, fever, or changes in appetite; and bowel and bladder patterns — the last bowel movement, any constipation or diarrhea, blood in stool, or urinary symptoms. Ask about recent surgery, known conditions (such as diabetes, which can change how pain is felt), and medications. Then prepare the environment: provide privacy and draping, position the patient supine with the head slightly elevated and knees bent (this relaxes the abdominal muscles), warm your hands and the stethoscope, and explain each step before you do it. If the patient reports a painful area, examine it last — this keeps the patient relaxed and prevents from masking other findings.

Inspection: look before you touch

Inspection begins the moment the drapes are lifted and continues while you talk with the patient. Note the contour of the abdomen — flat, rounded, protuberant (as with obesity, gas, or fluid), or scaphoid (sunken, as with malnutrition). Check for symmetry: a bulge on one side can indicate a mass or hernia. Observe the skin for color, scars, striae (stretch marks), bruises, lesions, or visible veins, and note the umbilicus — inverted, everted, or displaced. Watch for visible pulsations (normal in thin people over the aorta) and for movement with respiration — the abdomen should rise and fall with breathing; an abdomen that does not move with respiration can be a sign of peritoneal irritation. Finally, ask the patient to cough or bear down briefly to see if any bulge appears — a quick screen for hernias.

Auscultation: listen before you press

Auscultation comes next — before percussion and palpation — because pressing on the abdomen can stimulate or silence bowel sounds. Use the diaphragm of the stethoscope, warm it first, and listen in all four quadrants, at least a minute or two in total. Bowel sounds are the sounds of peristalsis moving gas and fluid — normally heard as intermittent gurgles or clicks, with frequency varying from person to person. Findings are described as normal, hypoactive (fewer or quieter), hyperactive (louder, more frequent, sometimes high-pitched, often called borborygmi or "stomach growling"), or absent (which requires listening for several minutes in multiple quadrants before concluding — be cautious, and confirm with the provider before alarming the patient). Also listen over the aorta and other major vessels for bruits — a swishing sound indicating turbulent blood flow; these are typically evaluated and interpreted by providers.

Percussion: tap for the map

Percussion involves tapping the abdomen with the middle finger of one hand (the pleximeter) struck by the middle finger of the other hand, and listening to the resulting note. — a hollow, drum-like note — is normal over gas-filled bowel and is the predominant sound over most of the abdomen. is heard over solid organs (the liver in the RUQ) and over fluid or masses. Percussion helps map the size of the liver and detect ascites (fluid in the peritoneal cavity — a fluid wave or shifting dullness can be elicited, typically by the provider). Percussion should be gentle; a painful response to percussion is significant and should be reported.

Palpation: feel with care

Palpation is performed last and in two stages. Light palpation uses the flat of the hand, pressing gently (about 1 cm) to assess for tenderness, guarding, and superficial masses; watch the patient's face for wincing, which may be more reliable than their words. Deep palpation (2–4 cm or more) is used to feel deeper organs and masses, and is often performed or confirmed by the provider. Note the location, size, shape, consistency, and tenderness of anything you feel. Guarding — voluntary tensing of the abdominal muscles — occurs when the patient is anticipating pain. — involuntary, board-like stiffness of the abdominal wall — is a more serious sign and can indicate peritoneal irritation. (pain worse when pressure is suddenly released) is a classic sign of peritoneal irritation; it is uncomfortable, so it is generally not repeated once elicited, and its evaluation is typically left to the provider. Palpate the painful area last, and stop if the patient is in significant distress.

Special considerations

Several groups need adjustments. Older adults may have less pronounced signs and atypical presentations of serious conditions (pain may be vague, fever may be blunted), so a high index of suspicion is needed and any change should be reported. Post-operative patients may have incisions, dressings, drains, and temporary ileus (slowed bowel activity) — compare with the expected post-op course and report deviations. Pregnant patients have displaced organs and altered landmarks; follow obstetric-specific protocols. Patients who cannot report pain (altered mental status, sedation, language barriers, cognitive impairment) require extra attention to non-verbal cues and, often, provider involvement. Scope of practice varies by state or provincial regulations and facility policy.

Common Confusions

Do Not Confuse	With	Difference
Auscultation order	Percussion/palpation order	Auscultate FIRST — pressing changes bowel sounds; percussion and palpation come after
Hypoactive bowel sounds	Absent bowel sounds	Hypoactive = fewer/quieter (common after surgery); absent = none heard over several minutes, needs confirmation
Guarding	Rigidity	Guarding is voluntary, relaxes with distraction; rigidity is involuntary, board-like, and more serious
Tympany	Dullness	Tympany = hollow note over gas; dullness = flat note over solid organs/fluid
Light palpation	Deep palpation	Light = gentle, for tenderness/guarding; deep = firmer, for organs/masses, often provider-performed
Rebound tenderness	Direct tenderness	Direct pain is on pressing; rebound is worse on release and suggests peritoneal irritation
"Normal for this patient"	"Normal textbook abdomen"	Post-op ileus, obesity, pregnancy, and age all change findings — compare with baseline

Eli explains

The same idea, in plain words

Explain it like I’m 10

Checking your belly is like checking a car engine — but with a strict order so you don't mess up the readings. First you look at the engine (inspection), then you listen to it running quietly (auscultation), then you tap parts to hear if they're full or hollow (percussion), and only at the very end do you press on things to feel for problems (palpation). If you pressed first, you'd change the sounds you hear, like shaking a car before listening to its engine. And you always save the sore spot for last, so the person stays relaxed.

Worked example

The RLQ pain workup, done in order. Ms. Alvarez, 29, reports sharp right lower quadrant pain that started around her navel this morning and moved down. After the history (pain, appetite, last bowel movement, any vomiting, last menstrual period), you set up for the exam: draping, knees bent, warm hands. You inspect — abdomen flat, symmetric, no scars, moves with respiration. You auscultate all four quadrants and hear normal, active bowel sounds. You percuss — tympany throughout, no dullness. Then light palpation, starting away from the pain: she is relaxed until you reach the RLQ, where she winces and guards. You do not press deeply there; you document "RLQ tenderness with guarding, bowel sounds active, abdomen soft otherwise" and report to the provider, who performs deep palpation and further evaluation. The sequence mattered: had you palpated first, you might have heard altered bowel sounds and misread the picture — and by examining the painful area last, you got a relaxed, cooperative patient and a reliable exam.

Key takeaways

Order matters: Inspection → Auscultation → Percussion → Palpation. Auscultate before pressing, because touch alters bowel sounds.
History first: location of pain (one finger), onset, character, aggravating/relieving factors, appetite, nausea/vomiting, bowel and bladder patterns, recent surgery.
Inspect for contour, symmetry, skin, umbilicus, pulsations, and movement with respiration.
Listen in all four quadrants and describe bowel sounds as normal, hypoactive, hyperactive, or absent — "absent" requires several minutes of listening and provider confirmation.
Tympany over gas, dullness over solid organs — percussion maps the liver and detects fluid.
Palpate light then deep; examine the painful area last. Guarding is voluntary; rigidity is involuntary and serious; rebound tenderness suggests peritoneal irritation (provider territory).
Report red flags promptly: severe or worsening pain, rigid abdomen, absent bowel sounds with distention and vomiting, blood in stool or vomit, fever with abdominal pain.
Scope and technique vary by institution; when in doubt, ask, and never repeat a maneuver that causes significant pain just to confirm a finding.

Check yourself

6 review questions from the chapter. Try each one, then open the answer.

What is the correct order of the four abdominal exam techniques, and why does the order matter?
Show answer
Inspection, auscultation, percussion, palpation. Order matters because percussion and palpation can alter bowel sounds, so you listen before you disturb the abdomen.
You hear tympany in most of the abdomen and dullness in the RUQ. Is this expected?
Show answer
Yes — tympany over gas-filled bowel is normal, and dullness over the liver in the RUQ is expected.
A patient's abdomen feels stiff and board-like, and it does not relax even when you distract them. What is this finding called, and why is it important?
Show answer
Rigidity — involuntary board-like stiffness that can indicate peritoneal irritation (such as peritonitis); it is more serious than voluntary guarding and warrants prompt reporting.
When should you examine the painful area during palpation — first or last, and why?
Show answer
Last — examining the painful area first makes the patient tense up (guarding), which can mask other findings and make the exam unreliable.
What must you do before concluding bowel sounds are absent?
Show answer
Listen in multiple quadrants for several minutes total (and confirm with the provider) before concluding sounds are absent.
List three red flags from an abdominal assessment that warrant prompt provider notification.
Show answer
Severe or worsening pain; rigid (board-like) abdomen; absent bowel sounds with distention and vomiting; blood in stool or vomit; fever with abdominal pain. (Any of these warrant prompt notification.)

Keep learning

Ready to build on this? Continue to the next lesson.

Study toolsKey vocabulary

Key vocabulary

Inspection: Looking at the abdomen before touching it
Auscultation: Listening with a stethoscope for bowel and vascular sounds
Percussion: Tapping to produce notes (tympany vs dullness)
Palpation: Pressing with the hands to feel organs and masses
Tympany: A hollow, drum-like percussion note
Dullness: A flat percussion note
Guarding: Voluntary muscle tensing because the patient expects pain
Rigidity: Involuntary, board-like abdominal wall stiffness
Rebound tenderness: Pain worsened by sudden release of pressure
Bruit: A swishing sound over a vessel

Sources & references

openstax.org — Clinical Nursing Skills

This lesson was adapted from the open educational references above; their licenses and attributions are preserved. See Copyright & Licensing.

Educational content only. It is not medical, legal or professional advice. Found an error? Tell us.