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 Paediatrics · Cardiology

Infant with Respiratory Distress and Poor Feeding

History: An 8-month-old infant with known ventricular septal defect presents with 2 weeks of poor feeding, sweating during feeds, and increasing breathlessness. The mother reports reduced weight gain and longer feeding times.

History points to → Congestive heart failure Primary system: Cardiovascular Exclude: Lower respiratory tract infection

Targeted examination plan — derived directly from history

Examine — with justification

Respiratory rate and work of breathing Tachypnoea and recessions indicate severity

Heart rate and peripheral perfusion Tachycardia and prolonged capillary refill suggest decompensation

Hepatomegaly Early and sensitive sign of heart failure in infants

Basal crepitations Suggest pulmonary congestion

Weight and growth centiles Growth faltering indicates chronic cardiac burden

Do not prioritise — unless indicated

Full neurological examination No neurological concerns in the history

Detailed musculoskeletal examination Not relevant to presenting complaint

ENT examination Only if infection suspected

Clinical reasoning The history strongly suggests cardiac failure secondary to a significant left-to-right shunt. Examination is designed to confirm congestion, assess severity, and exclude infection. If hepatomegaly and tachycardia are absent, the hypothesis must be reconsidered — bronchiolitis or pneumonia may be responsible.

In infants, hepatomegaly is often a more reliable sign of heart failure than peripheral oedema.

Example 02 Paediatrics · Gastroenterology

Chronic Diarrhoea with Growth Faltering

History: A 9-year-old child presents with 5 months of loose stools, abdominal pain, fatigue, and weight loss. The parent reports recurrent mouth ulcers and intermittent knee pain.

History points to → Inflammatory bowel disease Primary system: Gastrointestinal Relevant others: Skin, joints, growth

Targeted examination plan — extraintestinal features matter

Examine — with justification

Height, weight, and growth chart review Growth faltering is a key paediatric severity marker

Pallor Suggests anaemia from chronic inflammation or blood loss

Abdominal tenderness or mass Right iliac fossa mass may suggest Crohn's disease

Perianal inspection Fissures or skin tags strongly suggest Crohn's disease

Joint examination Peripheral arthropathy may accompany active disease

Skin examination Erythema nodosum or other extraintestinal signs

Do not prioritise — unless indicated

Detailed respiratory examination No respiratory symptoms reported

Full cardiovascular examination Baseline observations only unless indicated

Neurological examination Not suggested by the history

Clinical reasoning The history strongly suggests inflammatory bowel disease. In children, growth assessment is essential and cannot be omitted. Examination extends deliberately beyond the abdomen because inflammatory bowel disease has systemic manifestations. Each sign sought either strengthens the hypothesis or broadens the differential.

In paediatrics, growth is a vital sign. Always review centiles in any child with chronic symptoms.

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.