Examination Is Not a Ritual

Core Principle

We do not examine randomly.
We examine to test a hypothesis.

History first History does not just collect information — it generates a ranked set of hypotheses. The examination exists to test them.

CTAC still leads The organ system of primary interest follows from your most likely diagnosis. Common things are common — start there.

The standard A clinician who cannot explain why they examined what they examined has not examined — they have performed a ritual.

What the Examination Is For

"The physical examination is not a search party — it is a verification exercise."

Purpose 1

Support the most likely diagnosis — find the expected signs.

Purpose 2

Exclude serious alternatives — look for signs that would change management urgently.

Purpose 3

Assess severity and complications — findings that determine how sick this patient is right now.

Note on language: History rarely establishes a "provisional diagnosis" with certainty — it generates a ranked list of hypotheses. The examination is how you begin to confirm or discard them.

The Method

What history generates — and what examination does with it

History generates

Hypotheses & priorities

The history gives you a working differential — ranked by probability. The leading hypothesis determines where you begin.

Ranked differential diagnoses

Organ system of primary interest

Dangerous diagnoses to actively exclude

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Examination is

Targeted verification

You examine the system the history points to — thoroughly and systematically. Other systems only if the differential demands it.

Primary system — examined in full

Other systems — only if justified

Look for: signs, severity, complications

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Findings either

Confirm or redirect

Examination findings will either reinforce your working hypothesis — or open a new diagnostic branch you did not anticipate.

Expected signs present → proceed

Expected signs absent → reconsider

Unexpected signs → new hypothesis

Organ System

Finding the system of primary interest — CTAC still applies

CTAC-guided — most common system first

Presenting complaint → Primary system → Targeted examination

Presenting Complaint	Primary System	Key Signs to Seek	Cross-system Alert
Chest pain on exertion	Cardiovascular	Pulse character, BP, JVP, heart sounds, signs of heart failure	Respiratory (exercise-induced bronchoconstriction) CVS is the horse — but exertional dyspnoea may point to both
Chronic cough with purulent sputum	Respiratory	Respiratory rate, trachea, percussion, breath sounds, added sounds	Cardiovascular (cardiac cough — nocturnal, non-productive) If cough is nocturnal and non-productive, consider heart failure
Epigastric burning pain	Gastrointestinal	Epigastric tenderness, succussion splash, hepatomegaly, Murphy's sign	Cardiovascular (inferior MI can present as epigastric pain) A classic trap — the symptom does not always match the system
Polyuria and polydipsia	Endocrine	Hydration status, BMI, blood pressure, fundoscopy, peripheral neuropathy	Renal (diabetes insipidus — central or nephrogenic) Type 1 and 2 DM remain the horse — but DI must not be missed
Acute unilateral limb weakness	Nervous system	Power, tone, reflexes, plantar response, cranial nerves, speech	Cardiovascular (source of embolism — AF, valvular disease) Examination of the heart is relevant to prognosis and recurrence risk

The table is a starting point, not a rule. History may point to multiple systems simultaneously. If the history is ambiguous, begin with the most dangerous system first — not the most common.

What to Look For

Positively and negatively relevant findings — both matter equally

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Positively Relevant Findings

Also called: positive findings

Signs that, when present, increase the probability of a diagnosis. You examine specifically to find — or not find — these.

Signs characteristic of the leading diagnosis
Severity markers — how unwell is this patient?
Complications of the suspected condition
Signs confirming the organ system is involved

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Negatively Relevant Findings

Also called: pertinent negatives

Findings whose absence lowers the probability of a diagnosis. Equally important — and equally deliberate. You look for them specifically so you can say they are not there.

Absent oedema in suspected heart failure
No raised JVP despite clinical HF picture
No organomegaly in suspected haematological malignancy
No lymphadenopathy in suspected lymphoma

Key Insight The absence of an expected finding is not the same as finding nothing. A pertinent negative is a deliberate, documented observation — not an omission. Saying "no peripheral oedema" tells a different clinical story from simply not examining the legs.

Examples

History directing examination — in practice

Example 01 Cardiovascular · Medicine

Dyspnoea — Orthopnoea and PND

History: A 68-year-old man presents with progressive breathlessness over 4 weeks. He now sleeps with three pillows (orthopnoea) and has woken twice this week unable to breathe (paroxysmal nocturnal dyspnoea). He has a history of hypertension and was treated for a myocardial infarction 2 years ago.

History points to → Left ventricular failure Primary system: Cardiovascular Exclude: Respiratory cause

Targeted examination plan — derived directly from history

Examine — with justification

Jugular venous pressure (JVP) Elevated in right heart failure — confirms raised filling pressures

Peripheral oedema — ankles, sacrum Dependent oedema suggests fluid retention and right-sided failure

Apex beat position and character Displaced laterally and inferiorly in dilated left ventricle

Third heart sound (S3 gallop) Specific for ventricular dysfunction in adults — a significant finding when present

Basal lung crepitations Pulmonary oedema — fine, bibasal, on inspiration

Blood pressure and pulse character Hypertension — the likely precipitant here; low BP suggests poor cardiac output

Do not prioritise — unless indicated

Full cranial nerve examination No history suggesting neurological involvement

Peripheral nervous system Not relevant to the presenting complaint

Abdominal examination (unless hepatomegaly suspected) Examine if right heart failure and hepatic congestion are suspected

Clinical reasoning Orthopnoea and PND are highly specific for left ventricular failure. The examination is designed to confirm LVF, assess its severity (JVP, oedema, S3), and identify its precipitant (blood pressure). If examination is clear of cardiac signs, the diagnosis must be reconsidered — the history may be incomplete, or a respiratory cause (COPD, pulmonary fibrosis) may be responsible.

S3 is specific but not sensitive for ventricular dysfunction in adults. Its presence is meaningful — but its absence does not exclude heart failure.

Example 02 Gastroenterology · Medicine

Chronic Diarrhoea with Weight Loss

History: A 34-year-old woman presents with 6 months of loose stools (4–6 times per day), cramping abdominal pain, and a 7 kg weight loss. She mentions occasional mouth ulcers and has noticed some joint pain in her knees. There is no family history of bowel cancer but her mother had "colitis."

History points to → Inflammatory bowel disease (Crohn's / UC) Primary system: Gastrointestinal Relevant others: Skin, Joints, Eyes, Mouth

Targeted examination plan — extraintestinal manifestations matter here

Examine — with justification

General nutritional status — BMI, muscle wasting Weight loss with chronic diarrhoea requires nutritional assessment

Pallor — anaemia of chronic disease or blood loss Common in IBD — iron deficiency, B12, folate

Abdominal examination — mass, tenderness, distension Right iliac fossa mass in Crohn's; distension if obstruction or toxic megacolon

Perianal inspection — fissures, skin tags, fistulae Perianal disease is pathognomonic of Crohn's disease

Skin — erythema nodosum, pyoderma gangrenosum Extraintestinal manifestations of IBD — mouth ulcers also noted in history

Joints — arthropathy (knees, ankles) Peripheral arthropathy correlates with gut disease activity in IBD

Thyroid — if hyperthyroidism on differential Hyperthyroidism causes diarrhoea and weight loss — examine if goitre suspected

Do not prioritise — unless indicated

Detailed respiratory examination No respiratory symptoms in the history

Full cardiovascular examination Not indicated by presenting complaint — check pulse and BP as baseline only

Neurological examination No neurological features — defer unless B12 deficiency develops

Clinical reasoning The history here suggests IBD strongly. But the examination extends beyond the abdomen — deliberately — because IBD has well-recognised extraintestinal manifestations. Examining the skin, joints, and mouth is not random: it is hypothesis-driven. Each finding either confirms the diagnosis or raises the differential to include other systemic diseases.

Perianal disease — fissures, skin tags, fistulae — is so characteristic of Crohn's disease that its presence shifts the diagnosis significantly. Do not omit perianal examination in any patient with chronic diarrhoea.

The Mismatch

When history and examination do not agree — a diagnostic red flag

Diagnostic Red Flag

History–Examination Mismatch Is Never Irrelevant

Example: History strongly suggests heart failure. But examination reveals no raised JVP, no oedema, and clear lung bases. What now?

Is the history reliable? Was the history taken completely? Did the patient minimise symptoms? Is there a communication barrier? Take a collateral history.

Is the patient already treated? Diuretics will clear oedema. Beta-blockers lower heart rate. A patient on optimal heart failure therapy may have a normal examination.

Was the examination adequate? Was the patient fully exposed? Was JVP assessed at 45°? Were lung bases examined posteriorly? Technique matters.

Is the diagnosis wrong? A clear examination does not mean the history is false — it means the initial hypothesis may be incorrect. Revise and retest.

Is there more than one diagnosis? Co-existing pathology is common, particularly in older patients. Two diseases can produce a picture that fits neither perfectly.

The mismatch itself is data. Do not explain it away. Document it. Investigate it. A clinician who ignores the mismatch has stopped thinking.

The Checklist

Six questions before you examine — make them a habit

Bedside & Viva Checklist

Before you lay a hand on the patient — ask these

Apply to every patient. Every time. Make it automatic.

What is the main complaint?

One sentence. The complaint, not the diagnosis. "Breathlessness for 4 weeks" — not "I think it's heart failure."

Which organ system is primarily involved?

Based on the history, not assumption. This determines where you begin. If unclear, begin with the most dangerous system.

What are my top three differential diagnoses?

Ranked by probability — CTAC guides you. Name them before you examine. This is how you know what to look for.

What findings should I look for to support each?

The positively relevant findings — signs that, if present, would confirm a diagnosis. List them mentally before you begin.

What findings, if absent, would argue against them?

The pertinent negatives — findings you will specifically look for and document as absent. Not incidentally absent — deliberately checked.

Am I examining purposefully — or performing a ritual?

If you cannot explain why you are examining a system — you should not be examining it yet. Or you should revise your differential first.

One more thing: Always obtain consent before examining. A brief explanation — "I'd like to examine your chest" — is not a formality. It is part of clinical practice and reflects respect for the patient.

Take-Home Message

"Examination is not a ritual.
It is a tool to test your clinical hypothesis."

Every sign you look for should answer a question generated by the history.
Every sign you find — present or absent — should update your thinking.

History Hypothesis

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Examination Verification

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Investigations Confirmation or Revision

We do not examine randomly. We examine to test a hypothesis.