Physical examination Study Guide

📖 Core Concepts Physical Examination – A systematic, hands‑on assessment by a clinician to find signs of disease; follows the medical history and informs diagnosis and treatment. Medical History – Patient’s report of past illnesses, surgeries, meds, allergies, family health, and chief complaint; guides which organ systems are examined. Vital Signs – Temperature, blood pressure (BP), pulse, respiratory rate – the “quick snapshot” of physiologic status. Four Core Actions – Inspection (look), Palpation (touch), Percussion (tap), Auscultation (listen). Each uses a different sense to detect abnormalities. Exam Types Routine (General Health Check) – Preventive screen for asymptomatic people; focuses on HEENT and basic vitals. Comprehensive (Executive) – Extensive labs, imaging, and full organ‑system assessment. Pre‑employment – Limited exam for job fitness; unnecessary tests discouraged. Evidence Base – Annual routine exams do not lower overall mortality; they can cause over‑diagnosis, overtreatment, and false‑positives. Tailored frequency based on age, risk, and prior results is preferred. Doctor‑Patient Relationship – Performing a physical reinforces trust and meets patient expectations for thorough care. --- 📌 Must Remember Purpose: Detect existing disease, catch early signs before symptoms, and set a baseline for future comparison. Routine Exam Outcomes: No mortality benefit; improves delivery of certain screenings (Pap smear, cholesterol). Guideline Highlights Cancer‑related check‑ups: annually for >40 yr, every 3 yr for 20–40 yr (American Cancer Society). Screening intervals should be individualized (age, sex, risk factors). Four Core Actions – always performed in order: Inspection → Palpation → Percussion → Auscultation. Systematic Order – Start at the head, move down to the extremities; add disease‑specific tests only when indicated. Documentation – Record findings in a standardized layout for billing, continuity, and future review. --- 🔄 Key Processes History → Focus Take comprehensive history → identify chief complaint & risk factors → decide which organ systems to examine in depth. Systematic Physical Exam Step 1: General appearance & vital signs. Step 2: Head‑to‑toe inspection. Step 3: Palpation of relevant structures. Step 4: Percussion where tissue density matters. Step 5: Auscultation of heart, lungs, abdomen, vessels. Step 6: Add targeted maneuvers (e.g., Trousseau’s sign for hypocalcaemia) if suspicion arises. Documentation Record each core action, normal/abnormal findings, and any follow‑up plan in the EMR using the clinic’s template. --- 🔍 Key Comparisons Routine vs. Comprehensive Routine: Quick screen, limited labs, focus on preventive care; low yield for mortality reduction. Comprehensive: Full panel of labs/imaging, organ‑system deep dive; used for executive health or specific diagnostic needs. Inspection vs. Palpation vs. Percussion vs. Auscultation Inspection: Visual clues (skin color, lesions). Palpation: Texture, size, tenderness. Percussion: Air vs. fluid vs. solid (e.g., resonance over lung). Auscultation: Sound patterns (murmurs, wheezes). Evidence‑Based Routine vs. Tailored Screening Routine: Fixed annual schedule – not supported by mortality data. Tailored: Frequency set by age, risk, prior results – supported by modern guidelines. --- ⚠️ Common Misunderstandings “Annual routine exams save lives.” → Data show no mortality benefit; over‑diagnosis risk is higher. “More tests = better care.” → Unnecessary tests (e.g., baseline low‑back X‑ray) can cause harm and increase costs. “Physical exam replaces lab testing.” → The exam complements labs; it generates hypotheses, not definitive diagnoses. “Every visit requires a full head‑to‑toe exam.” → Use a focused exam guided by the chief complaint and history. --- 🧠 Mental Models / Intuition Hypothesis‑Driven Exam – Treat the history as a set of hypotheses; the exam is a targeted test to confirm or refute each. Four‑Sense Framework – Map each core action to a sense (sight, touch, hearing, proprioception) to remember the sequence. Head‑to‑Toe Checklist – Visualize a ladder: start at the head, descend stepwise; ensures no system is missed unintentionally. --- 🚩 Exceptions & Edge Cases High‑Risk Populations – More frequent cancer or cardiovascular screening (e.g., smokers, familial hypercholesterolemia). Cultural Modesty – Adjust draping and exposure per patient preference; document any limitations. Occupational Medicine – Baseline low‑back X‑ray discouraged unless a specific occupational hazard exists. --- 📍 When to Use Which Routine vs. Tailored – Choose routine only for low‑risk, asymptomatic adults who prefer a general check; otherwise, apply risk‑based intervals. Comprehensive (Executive) – Use for high‑net‑worth patients, baseline health assessment before major surgery, or when multiple screening tests are indicated simultaneously. Focused System Examination – Deploy when the chief complaint points to a specific organ (e.g., respiratory exam for cough). --- 👀 Patterns to Recognize Silent Hypertension – Elevated BP with otherwise normal exam – flag for repeat measurement and work‑up. Red‑Flag Signs – Trousseau’s sign, cyanosis, clubbing – immediately suggest serious underlying disease. Overdiagnosis Clues – Isolated abnormal lab values without symptoms (e.g., mildly elevated PSA in a young man) → consider watchful waiting. Patient Anxiety – Frequent questioning about “missing something” often indicates need for reassurance rather than additional testing. --- 🗂️ Exam Traps Distractor: “Annual routine exams reduce cancer mortality.” – Attractive but contradicted by systematic reviews. Distractor: “More imaging always improves outcomes.” – Leads to over‑diagnosis; unnecessary radiation exposure. Distractor: “All vital signs must be recorded at every visit.” – In some follow‑up visits (e.g., mental‑health only), a full vital set may be optional. Distractor: “Inspection alone is sufficient for a normal exam.” – Misses tactile and auditory information critical for many diagnoses. ---