Hardening & narrowing of the blood vessels, limiting blood flow (O₂ perfusion). Risk factors scar & stretch the artery lining → tiny tears → lipids, calcium & macrophages settle into the tears and build atheromas (plaque) → the artery goes hard and narrow. Then the plaque bursts, a clot forms, and it can kill the client.
PATHO TIPArteriosclerosis = any hardening/stiffening of arteries (includes plain aging & calcium). Atherosclerosis = the fatty-plaque version. All atherosclerosis is arteriosclerosis; not all arteriosclerosis is atherosclerosis.
🧠 “Oatmeal in the pipes.” Picture cold oatmeal (athero = porridge) glued to the inside of a pipe, then left to dry into concrete (sclerosis = hard). Soft core, hard shell — that image explains every complication on this page.
🔬 How a scratch becomes a plaque — the foam-cell cascade
Fatty streaks can start in childhood and adolescence. By the time she has symptoms, the wall has been building for decades — which is exactly why prevention is the nursing answer.
🧠 “Injured wall orders take-out.” The torn lining lets LDL in, LDL goes rancid, macrophages arrive to “clean up,” get stuffed (foam cells), and die right there. The garbage crew becomes the garbage.
⚠️ Modifiable risks — what scratches the wall
🚬 Smoking — direct endothelial toxin, also ↓HDL. The single biggest one she can change.
🩸 Hypertension — shear force sandblasts the lining
🍟 High LDL / low HDL, diet high in animal fats & trans fats
🍬 Diabetes / insulin resistance — sugar is chemically corrosive to endothelium
🧠 “SODA” — Smoke · Obesity · Diabetes/Diet · Arterial pressure. Every one of them is a hand holding sandpaper against the artery lining.
🔒 Non-modifiable risks — what she can't change
🎂 Age — risk climbs for men ≥45 and women ≥55
🚻 Sex — men earlier; women's risk catches up after menopause
👪 Family history of premature CAD — a first-degree male relative <55 or female <65
🧬 Genetics — e.g. familial hypercholesterolemia = very high LDL from childhood
🌍 Health inequities — higher CVD burden in Black adults is driven largely by access, stress & social determinants, not by race itself
🧠 Non-modifiable = the deck she was dealt. Modifiable = how she plays it. Exam questions about teaching always live in the modifiable column.
⭐ Source-check: two numbers people repeat wrong
Often written as…
The accurate version
“Obesity = BMI over 25”
25.0–29.9 = overweight; ≥30 = obesity. Both raise risk — just don't call 26 obese on a test.
“HTN = over 140/90”
Under the 2017 ACC/AHA thresholds, hypertension starts at ≥130/80; ≥140/90 is stage 2. Older texts still teach 140/90 — know both.
🧠 If two sources disagree on a cut-off, the direction of the answer never changes: higher BMI, higher BP, higher LDL = more plaque. Pick the answer that lowers the number.
🧱
THE 4 STAGES
STEP 2 · WATCH IT CLOSE
One artery, four snapshots. Learn this picture once — MI, angina and the statins page all point back to it.
🧱 Scratch → Snack → Scar → SNAP — the artery cross-section, stage by stage
🧠 “Scratch, Snack, Scar, SNAP.” Say it as a rhythm. Four S's, four panels, four exam answers: risk factors → cholesterol → stable angina → MI. Every other cardio page in this set is one of these four boxes.
📈 How much narrowing before she feels it?
EXAM TIP A plaque can sit at <50% for years with a totaly normal history and normal EKG. “No symptoms” never means “no disease.”
🧠 “70 to complain, 90 to be in pain at rest.” Around 70% she gets chest pain only when she asks the heart to work; near 90% the pain shows up sitting still.
🚨 Stable plaque vs vulnerable plaque
The scary one is not the biggest plaque. Many fatal events come from a plaque that was only moderately narrowing — but had a thin, inflamed cap.
🧠 “Thin cap = thin ice.” Thick crust holds your weight; thin crust drops you into the water. Statins are so powerful partly because they thicken and calm the cap, not just lower a number.
💥 What the clot does next — 3 endings
🧱 Plaque cap ruptures
▼
🩸 Platelets + fibrin build a thrombus on the spot
▼
🫀 Stays put → occludes that artery = MI (NG-071)
🧠 Breaks off → travels = embolus → ischemic stroke
🧠 Thrombus stays, embolus escapes.“Throm-STAYS, em-BOLTS.” Same clot, different address — and the address decides whether it's a heart attack, a stroke, or a cold blue foot.
🔎
CLUES
STEP 3 · WHERE IT SHOWS UP
Atherosclerosis has no symptoms of its own — it borrows the symptoms of whatever organ it starves.
🗺️ Main sites — same plaque, different disease name
AAA — pulsatile abdominal mass, back pain. Never palpate deeply if AAA is suspected.
Iliac / femoral 🦵
Intermittent claudication, cool shiny hairless legs, weak pulses, PAD (NG-045)
Renal 🫘
Hypertension that won't respond to meds, rising creatinine
Mesenteric 🍽️
Abdominal pain after eating ("intestinal angina"), weight loss, food fear
🧠 “CAFÉ-I” — Carotids · Abdominal aorta · Femorals · Iliacs (add the coronaries, which order the same food). Picture a café where every plate is fried: the neck, the belly, the hip and the thigh are all sitting at the same table.
🧪 Labs that tell the story
Total cholesterol — goal <200 mg/dL
LDL "Lousy" — goal <100 mg/dL (lower targets if she already has CAD/diabetes)
hs-CRP — inflammation marker; supports risk staging, not a diagnosis
A1c<5.7% normal — diabetes accelerates every stage on this page
🧠 L = Lousy (want it LOW) · H = Happy (want it HIGH). If the letter and the arrow both start with the same feeling, you got it right. Full drug detail on NG-242.
🔬 How it's found
Lipid panel — fasting is traditional; many labs now accept non-fasting for screening
CT angiography / cardiac catheterization — cath is the gold standard and can stent in the same visit
Stress test — unmasks flow limits that rest EKG hides
🧠 Ultrasound looks, calcium score counts, cath fixes. Escalate in that order and you'll pick the right "next step" answer almost every time.
🩺
CARE
STEP 4 · STOP THE BUILD
You cannot un-build a plaque overnight — but you can stop the scratching, shrink the core and thicken the cap.
✅ The ABCDE of atherosclerosis care
A
Antiplatelet & Antilipid — aspirin/clopidogrel where indicated; a statin is the backbone (NG-242)
B
Blood pressure & Beta blockers — less shear force on the wall, less O₂ demand
C
Cholesterol diet & Cigarette cessation — smoking cessation is the highest-yield single change
D
Diabetes control & Diet — A1c to goal, DASH/Mediterranean pattern, less saturated & trans fat
E
Exercise & Education — aim for about 30 min × 5 days/week as tolerated
🧠 “ABCDE” = the alphabet of arteries. If a question asks for the priority teaching and she still smokes, smoking cessation wins — it's the only risk factor that both scratches the wall and thickens the blood.
🍽️ Diet teaching — plate, not pill
🥓LIMITsaturated fat
🍩AVOIDtrans fat
🧂LIMITsodium
🐟MOREfatty fish
🥣MOREsoluble fiber (oats, beans)
🥬MOREveg & fruit
🌰MOREnuts, olive oil
🍬LESSrefined sugar
Why fiber? Soluble fiber binds bile in the gut → the liver pulls LDL out of the blood to make more bile. Same trick the bile acid sequestrants use.
🧠 “Oats mop the pipes.” Oatmeal = the porridge that fights the porridge (athero). Cute enough to stick.
🚨 Teach her the emergency lines
🫀 Chest pain/pressure not relieved by rest → call 911, do not drive yourself
🧠 BE-FAST: Balance, Eyes, Face droop, Arm weakness, Speech, Time — stroke is atherosclerosis of the neck
🎈 Tearing back/abdominal pain + pulsatile mass → possible AAA rupture, emergency
🧠 Same disease, three phone calls: chest = 911, face droop = 911, cold blue leg = 911. Plaque doesn't care which artery it lives in — the urgency is identical.
🔧 When lifestyle isn't enough — procedures
Procedure
What it does
Nursing watch
PCI / angioplasty + stent
Balloon squashes the plaque, stent props the artery open
Site bleeding/hematoma, distal pulses, kidney function after contrast, dual antiplatelet therapy adherence
CABG
Bypass graft routes blood around the blocked segment
Neuro checks, neck swelling/hematoma → airway, BP control
Peripheral bypass / atherectomy
Restores flow to the leg
Pulses, warmth, color, capillary refill — mark them and recheck
NCLEX TIP A stent doesn't cure the disease — it fixes one segment. If she stops the statin or the antiplatelet, the stent can clot.
🧠 “Roto-rooter vs detour vs scrape.” Stent = roto-rooter, CABG = detour around the blockage, endarterectomy = scrape it out. The plumbing metaphor holds all the way down.
🧱 Atheroma= lipids + calcium + macrophages in LARGE arteries
💥 Rupture > narrowingThe clot on a thin-capped plaque is what kills
🚭 Priority teachingStop smoking · statin · BP · A1c · move 30 min × 5/wk
🎯 Cover & check — 6 rapid-fire questions
Q1: Define atherosclerosis in one line.
Hardening & narrowing of the blood vessels, limiting blood flow (O₂ perfusion) — caused by atheromas (plaque) of lipids, calcium and macrophages in large arteries.
Q3: Which is more dangerous — a 90% stable plaque or a 50% plaque with a thin inflamed cap?
The thin-capped one. It's the rupture and clot that cause MI and stroke, not the percentage alone. The 90% lesion causes symptoms; the vulnerable one causes events.
Q4: Name the main sites.
CAFÉ-I: Carotids, Abdominal aorta, Femorals, Iliacs — plus the coronary arteries, renal and mesenteric arteries.
Q5: The client's LDL is 168 and HDL is 32. Interpret.
Both are unfavorable — LDL should be under 100 and HDL over 40. Lousy is high, Happy is low: maximum plaque-building conditions.
Q6: She says "I feel fine, so my arteries must be fine." Response?
Atherosclerosis is silent until roughly 70% narrowing — fatty streaks can begin in childhood. Feeling fine does not mean no disease; screening and risk-factor control still matter.