Family Medicine · Year 3 · from Family Medicine

Case 2: Cardiovascular Risk Assessment and Statin Decision

Patient Demographics

  • Age: 48 years old
  • Sex: Male
  • Occupation: Software engineer

Chief Complaint

"My cholesterol came back high on a work screening. Do I need to be on medication?"

History of Present Illness

Mr. David Park is a 48-year-old man who had a biometric screening at work that revealed total cholesterol of 248 mg/dL. He is concerned and wants to know if he needs medication. He has no chest pain, shortness of breath, or other cardiac symptoms. He exercises occasionally (walks 1-2 times weekly) and tries to "eat healthy" but admits to frequent fast food meals due to work demands.

Past Medical History

  • No known chronic conditions
  • No prior cardiac events
  • No diabetes

Family History

  • Father: MI at age 58, currently alive with CAD
  • Mother: Hyperlipidemia, on statin
  • No family history of diabetes

Social History

  • Never smoker
  • Alcohol: 2-3 beers weekly
  • Married with two children
  • High-stress job with long hours
  • Sedentary work

Physical Examination

  • Vital Signs: BP 128/84, HR 72, BMI 27
  • General: Well-appearing, mildly overweight
  • Cardiovascular: Regular rate and rhythm, no murmurs
  • Peripheral pulses: Normal
  • No xanthomas or xanthelasma

Laboratory Results (fasting)

  • Total cholesterol: 252 mg/dL
  • LDL cholesterol: 168 mg/dL
  • HDL cholesterol: 42 mg/dL
  • Triglycerides: 210 mg/dL
  • Fasting glucose: 102 mg/dL (impaired fasting glucose)
  • HbA1c: 5.9%

Cardiovascular Risk Calculation

Using ASCVD Risk Calculator:

  • Age: 48
  • Sex: Male
  • Race: Asian
  • Total cholesterol: 252
  • HDL: 42
  • Systolic BP: 128 (untreated)
  • Diabetes: No
  • Smoker: No

10-year ASCVD Risk: 6.8% (borderline risk: 5-7.5%)

Risk-enhancing factors present:

  • Family history of premature ASCVD (father MI at 58)
  • Metabolic syndrome features (low HDL, elevated TG, impaired fasting glucose)
  • LDL > 160 mg/dL

Assessment

  1. Hyperlipidemia with LDL 168 mg/dL
  2. Borderline ASCVD risk (6.8%) with multiple risk-enhancing factors
  3. Prediabetes (IFG and HbA1c 5.9%)
  4. Metabolic syndrome - meets criteria

Management Plan

Shared Decision-Making Discussion: Explained to patient:

  • His 10-year risk of heart attack or stroke is approximately 7%
  • Risk-enhancing factors (family history, metabolic syndrome) increase his true risk
  • Options: lifestyle changes alone vs. lifestyle + statin therapy
  • Statin benefits: Would reduce his risk by approximately 25-30%
  • Statin risks: Muscle aches (5-10%), rare liver issues, small diabetes risk increase

Patient Decision: After discussion, patient elects to try intensive lifestyle modification for 3-6 months before starting medication.

Lifestyle Prescription:

  • Diet: Mediterranean or DASH pattern, limit saturated fat <7% calories, increase fiber
  • Exercise: Goal 150 min/week moderate intensity; start with 30 min walking 5x/week
  • Weight: Target 5-7% weight loss (goal weight: 175 lbs from current 185 lbs)
  • Referral to registered dietitian

If Statin Indicated (follow-up):

  • Would recommend moderate-intensity statin (atorvastatin 20mg or rosuvastatin 10mg)
  • Given risk-enhancing factors, may still recommend statin at follow-up

Prediabetes Management:

  • Discussed progression risk
  • Intensive lifestyle intervention (same as above)
  • Consider Diabetes Prevention Program referral

Follow-Up

  • Repeat fasting lipid panel in 3 months
  • Monitor weight and lifestyle adherence
  • Reassess statin decision at 3-month visit
  • Annual diabetes screening

Teaching Points

  1. Risk calculation: The ASCVD risk calculator is essential for guiding statin decisions in primary prevention. Raw cholesterol numbers alone are insufficient.
  1. Risk-enhancing factors: Borderline risk patients with risk-enhancing factors (family history, metabolic syndrome, LDL > 160) benefit from more intensive discussions about statin therapy.
  1. Shared decision-making: Statin therapy for primary prevention is a preference-sensitive decision. Some patients prefer medication; others want to try lifestyle first.
  1. Lifestyle as foundation: Therapeutic lifestyle change is the foundation of cardiovascular prevention regardless of medication decisions.

All cases for this lecture as Markdown