Cardiovascular Prevention and Rehabilitation — DCE Clinical Case

What this station is really testing

The risk-factor examination is not a ritual head-to-toe sweep. The examiner wants a targeted hunt for the physical footprints of dyslipidaemia, hypertension, smoking and adiposity, performed fluently, then — critically — a synthesis that turns signs into a risk calculation and a plan. The highest-value sign in the room is tendon xanthomata, because it converts a lipid number into a genetic diagnosis [1].

Examination sequence

General inspection and hands. Note body habitus and any nicotine staining of the fingers. Look at the extensor tendons over the knuckles for xanthomata — firm, skin-coloured nodules that move with the tendon. Ask her to make a fist and extend the fingers to bring the tendons out [1].

Eyes. Xanthelasma — yellowish periorbital plaques — is common and only modestly specific for dyslipidaemia (many patients with xanthelasma have normal lipids). Corneal arcus is the discriminating sign: a grey-white lipid ring at the corneal margin. Arcus before 45 years of age is a Dutch Lipid Clinic criterion for familial hypercholesterolaemia; in older patients it loses specificity [1].

Tendons. Palpate both Achilles tendons for thickening or nodules — tendon xanthomata here are near-pathognomonic of FH and carry 6 points on the Dutch Lipid Clinic Network criteria, the single most specific sign in preventive cardiology. Compare with the extensor tendons of the hands and, if indicated, the patellar tendon insertion [1].

Blood pressure, done properly. Seated, back supported, arm at heart level, correct cuff size, after five minutes' rest; take at least two readings and average, and check both arms if this is the first assessment. State your technique aloud — the examiner is scoring it as much as the number [2].

Adiposity and cardiovascular survey. BMI and waist circumference (central adiposity drives risk beyond BMI). Palpate radial, carotid, femoral and pedal pulses for established peripheral disease; listen for carotid and femoral bruits; feel for an abdominal aortic aneurysm in a parous habitus. A brief cardiac examination — displaced apex, added sounds — screens for consequences of long-standing hypertension [2].

Presentation template (deliver this to the examiner)

"Mrs Tran is a 52-year-old woman undergoing cardiovascular risk assessment because of a first-degree relative with premature coronary disease. On examination she has [BMI/waist], blood pressure of [reading] measured with correct technique, [presence or absence] of xanthelasma and corneal arcus, and — most significantly — [presence or absence] of tendon xanthomata at the Achilles and knuckles. Her peripheral pulses are [findings]. The positives in this examination, combined with non-fasting lipids, renal function, HbA1c and smoking status, will let me calculate her 5-year absolute CVD risk; tendon xanthomata, if present, would shift the framework entirely toward familial hypercholesterolaemia, cascade screening and early high-intensity statin therapy rather than routine risk-band management." [1] [2]

From signs to plan

• Calculate absolute risk with the AusCVDRisk calculator — her family history of premature CVD is a risk-enhancing factor that moves borderline patients toward treatment [2].
• If tendon xanthomata or very high LDL is found, score the Dutch Lipid Clinic Network criteria, manage as probable FH with high-intensity statin therapy, and arrange cascade screening of first-degree relatives — including, at the right age, her children [1].
• If arcus under 45 or premature family history is prominent, consider a one-off Lp(a) measurement: a level above about 50 mg/dL upgrades her risk estimate and tightens every other factor [3].
• Lifestyle prescription with numbers — Mediterranean dietary pattern, 150 minutes of weekly moderate exercise, smoking cessation support if relevant — and, if she were ever post-ACS, cardiac rehabilitation referral with its ~26% cardiovascular mortality benefit [2] [4].

Probing questions

"Which sign here most changes her management, and why?" — "Tendon xanthomata. Xanthelasma and arcus in a 52-year-old are soft signs, but xanthomata are near-pathognomonic of familial hypercholesterolaemia — that converts a risk-band conversation into a genetic diagnosis, an early high-intensity statin, and a screening obligation for her relatives" [1].

"She asks why you measured her waist when her cholesterol is the problem." — "Because the treatment decision is driven by her total absolute risk, not one lipid number — central adiposity, blood pressure, smoking and glucose all feed the same calculation, and two people with identical cholesterol can need completely different treatment depending on that total" [2].

"Her LDL comes back at 4.1 mmol/L. Does she need a statin?" — "That single number does not decide it. I would calculate her 5-year absolute risk; if it is 10% or more, or if her full profile meets criteria for possible FH, I would recommend a statin. If her risk is low and FH is not supported, lifestyle management with surveillance is defensible — and I would show her the absolute numbers behind whichever recommendation I make" [1] [2].

"What would you look for in her brother's records?" — "Whether his event truly was premature atherosclerotic disease, his lipid levels at diagnosis, and whether anyone examined his tendons — a confirmed FH diagnosis in him would make her a cascade-screening contact, not just a risk-assessment patient" [1].