Family Medicine · Year 3 · from Family Medicine

Case 2: Erectile Dysfunction with Cardiovascular Risk

Patient Demographics

  • Age: 54 years old
  • Sex: Male
  • Occupation: Construction supervisor

Chief Complaint

"I've been having trouble maintaining an erection. It's been going on for about six months now."

History of Present Illness

Mr. James Walker is a 54-year-old man presenting with erectile dysfunction that has gradually worsened over the past 6-8 months. He describes difficulty achieving and maintaining erections sufficient for intercourse. He can still achieve partial erections but they are not firm enough and do not last. Morning erections have also decreased in frequency and quality. He denies loss of libido, premature ejaculation, or relationship problems with his wife. He has not tried any medications for this condition. The problem has caused significant distress and he reports avoiding intimacy due to embarrassment.

Past Medical History

  • Hypertension (diagnosed 3 years ago)
  • Prediabetes (HbA1c 5.9%)
  • No prior cardiac events
  • No prior surgeries

Medications

  • Hydrochlorothiazide 25 mg daily

Family History

  • Father: Myocardial infarction at age 58
  • Mother: Type 2 diabetes

Social History

  • Smokes 1 pack per day for 30 years (30 pack-years)
  • Alcohol: 3-4 beers most evenings
  • Married for 28 years
  • Sedentary lifestyle, no regular exercise
  • High-stress job

Physical Examination

  • Vital Signs: BP 148/92 mmHg, HR 78, BMI 31
  • General: Overweight male, appears older than stated age
  • Cardiovascular: Regular rhythm, no murmurs, peripheral pulses slightly diminished in feet
  • Genitourinary: Normal external genitalia, testes normal size and consistency, no penile plaques
  • Secondary sex characteristics: Normal male hair pattern, no gynecomastia

Clinical Image

Image: Cross-sectional comparison of normal artery versus atherosclerotic artery demonstrating plaque buildup that narrows the vessel lumen. The penile arteries are smaller than coronary arteries and may show symptoms of vascular insufficiency earlier.

Image Source: Wikimedia Commons Attribution: National Heart Lung and Blood Institute, Public Domain URL: https://commons.wikimedia.org/wiki/File:Atherosclerosis_diagram.png

Laboratory Studies

  • Fasting glucose: 118 mg/dL (impaired)
  • HbA1c: 6.0%
  • Lipid panel:
  • Total cholesterol: 248 mg/dL (high)
  • LDL: 168 mg/dL (high)
  • HDL: 38 mg/dL (low)
  • Triglycerides: 210 mg/dL (high)
  • Total testosterone (morning): 385 ng/dL (low-normal)
  • TSH: 2.1 mIU/L (normal)
  • Serum creatinine: 1.0 mg/dL

Assessment and Diagnosis

  1. Erectile dysfunction - likely vasculogenic etiology given cardiovascular risk profile
  2. Cardiovascular risk factors - erectile dysfunction as potential early marker of systemic atherosclerosis
  3. Uncontrolled hypertension - current BP above goal
  4. Dyslipidemia - untreated, high LDL, low HDL
  5. Prediabetes - progressing toward diabetes
  6. Tobacco use disorder
  7. Alcohol use - possibly excessive

Management Plan

Cardiovascular Risk Assessment and Management (Primary Focus):

  • Calculated 10-year ASCVD risk: 18% (high)
  • Initiate atorvastatin 40 mg daily for primary prevention
  • Optimize blood pressure control:
  • Continue hydrochlorothiazide
  • Add lisinopril 10 mg daily (ACE inhibitor preferable given metabolic syndrome)
  • Consider switching thiazide if ED persists (thiazides can contribute to ED)

Erectile Dysfunction Treatment:

  • After confirming no contraindications (not on nitrates):
  • Sildenafil 50 mg as needed, 30-60 minutes before sexual activity
  • May increase to 100 mg or decrease to 25 mg based on response and tolerability
  • Maximum once daily
  • Counseled on side effects: headache, flushing, nasal congestion, visual changes

Critical Counseling on Nitrate Contraindication:

  • Absolute contraindication: Do NOT use nitroglycerin or any nitrate within 24 hours of sildenafil (48 hours for tadalafil)
  • Combination can cause severe, potentially fatal hypotension
  • If chest pain occurs, seek emergency care but inform providers about sildenafil use

Lifestyle Modifications (Most Important Long-Term):

  • Smoking cessation: Discussed as single most important intervention; offered nicotine replacement and referral to cessation program
  • Weight loss: Target 5-10% weight reduction
  • Exercise: Start with 30 minutes moderate activity most days
  • Alcohol reduction: Limit to 1-2 drinks per day maximum
  • Dietary counseling: Mediterranean-style diet

Follow-Up

  • Blood pressure recheck in 2 weeks
  • Repeat lipids in 6-8 weeks
  • Return visit in 4-6 weeks to assess ED treatment response
  • If ED improves with risk factor modification, may eventually reduce reliance on PDE5 inhibitors
  • Consider cardiology referral for stress testing given multiple risk factors

Teaching Points

  1. Erectile dysfunction is a cardiovascular warning sign: The penile arteries (1-2 mm) are smaller than coronary arteries (3-4 mm) and may manifest atherosclerosis earlier - ED may precede coronary events by 2-5 years
  1. Comprehensive cardiovascular risk assessment is mandatory when evaluating ED, including lipids, glucose, blood pressure, and lifestyle factors
  1. PDE5 inhibitors (sildenafil, tadalafil, vardenafil) are first-line ED therapy but are absolutely contraindicated with nitrate use
  1. Lifestyle modifications (smoking cessation, weight loss, exercise) address the root cause and may improve ED independent of pharmacotherapy
  1. Thiazide diuretics and some beta-blockers can contribute to ED - consider medication review and alternatives when appropriate

All cases for this lecture as Markdown