This lecture covers some of the most common vascular diseases you will encounter as a Registered Nurse. These conditions are seen every day in medical-surgical nursing, emergency departments, intensive care units, wound care clinics, home health, dialysis units, and primary care.
The ability to distinguish arterial disease from venous disease is one of the highest-yield concepts on the NCLEX.
By the end of this lecture, you should be able to:
Differentiate arterial disease from venous disease.
Recognize the signs and symptoms of Peripheral Arterial Disease (PAD).
Assess Chronic Venous Insufficiency (CVI).
Recognize Deep Vein Thrombosis (DVT).
Identify Acute Limb Ischemia.
Assess lymphedema.
Understand the Ankle-Brachial Index (ABI).
Apply clinical reasoning in vascular emergencies.
Answer NCLEX-style questions using nursing judgment.
A 72-year-old man arrives at the clinic.
He says,
"My leg hurts every time I walk."
A beginning nursing student asks,
"Does it hurt now?"
The patient says,
"No."
The student documents:
"Pain resolved."
The experienced RN asks:
How far can you walk before the pain starts?
Does resting make it better?
Do your feet feel cold?
Any ulcers?
Do you smoke?
Do you have diabetes?
Immediately the nurse suspects:
Peripheral Arterial Disease.
The pain disappearing with rest is actually an important clue.
PAD is caused by:
Atherosclerosis.
Fatty plaque narrows the arteries.
Blood flow decreases.
The tissues receive less oxygen.
Smoking
Diabetes
Hypertension
Hyperlipidemia
Advanced age
Obesity
Sedentary lifestyle
Family history
Smoking is one of the strongest modifiable risk factors.
Intermittent claudication
Cool extremity
Hair loss
Weak pulses
Delayed capillary refill
Pale skin
Shiny skin
Pain at rest (advanced disease)
Poor wound healing
Ulcers on the toes or feet
Definition:
Muscle pain during activity.
Caused by:
Insufficient blood flow during exercise.
Pain improves with:
Rest.
This is one of the hallmark findings of PAD.
As arterial disease worsens:
Pain may occur:
At rest.
Especially at night.
Patients often report:
Sleeping with the leg hanging over the side of the bed because gravity helps improve blood flow.
Location:
Toes
Feet
Heel
Pressure points
Appearance:
Round
Deep
"Punched-out"
Minimal drainage
Very painful
The surrounding skin is often cool, pale, and hairless.
This is a vascular emergency.
Usually caused by:
Arterial embolism
Arterial thrombosis
Trauma
Every RN must memorize these.
Pain
Pallor
Pulselessness
Paresthesia
Paralysis
Poikilothermia (cold limb)
If these findings are present:
Notify the provider immediately.
Time is tissue.
CVI develops when:
Venous valves fail.
Blood pools in the legs.
Venous pressure increases.
Fluid leaks into tissues.
Older age
Obesity
Pregnancy
Standing for long periods
Previous DVT
Varicose veins
Leg heaviness
Aching
Edema
Brown discoloration
Varicose veins
Venous ulcers
Symptoms improve with:
Leg elevation.
Compression therapy (when appropriate and not contraindicated).
Usually found:
Near the medial malleolus.
Appearance:
Shallow
Irregular
Moist
Drainage present
Surrounding skin often:
Brown
Edematous
Warm
Pain with walking
Cool skin
Weak pulses
Minimal edema
Pale skin
Hair loss
Painful ulcers on toes and feet
Improves with rest
Leg elevation may worsen symptoms in severe disease because it further reduces arterial blood flow.
Leg aching
Warm skin
Normal pulses
Edema
Brown discoloration
Varicose veins
Ulcers near the medial ankle
Symptoms often improve with leg elevation.
Definition:
Dilated superficial veins.
Caused by:
Valve failure.
Symptoms:
Visible twisted veins.
Leg heaviness.
Aching.
Fatigue.
Swelling.
DVT is:
A blood clot in a deep vein.
Most commonly occurs in:
The legs.
The clot can travel.
↓
Lungs.
↓
Pulmonary embolism.
Potentially fatal.
Remember Virchow's Triad:
Bedrest
Immobility
Long flights
Paralysis
Surgery
Trauma
IV catheters
Cancer
Pregnancy
Oral contraceptives
Inherited clotting disorders
Smoking
Unilateral swelling
Warmth
Tenderness
Redness
Calf pain
Sometimes no symptoms
Historically, calf pain with dorsiflexion of the foot (Homan's sign) was used as a bedside test.
Current practice: Homan's sign is not recommended because it is neither sensitive nor specific for DVT and should not be relied upon for diagnosis.
Every RN should recognize this emergency.
Symptoms:
Sudden shortness of breath
Chest pain
Rapid heart rate
Low oxygen saturation
Anxiety
Hemoptysis (sometimes)
Recent DVT history
Immediate evaluation is required.
Occurs when:
Lymph cannot drain properly.
Fluid accumulates.
Cancer surgery
Radiation
Congenital disorders
Trauma
Parasitic infection (in some parts of the world)
Non-pitting edema (especially in later stages)
Firm tissues
Thickened skin
Heaviness
Decreased mobility
Unlike venous edema, elevation often provides limited relief.
The ABI compares:
Ankle systolic blood pressure
↓
Arm systolic blood pressure
It helps detect PAD.
Normal.
Borderline.
Suggests Peripheral Arterial Disease.
Severe arterial disease.
Critical limb ischemia may be present.
A handheld Doppler device helps assess blood flow when pulses are difficult to palpate.
It is commonly used for:
Peripheral pulses
Postoperative vascular assessment
Patients with edema
Patients with diabetes
Always perform after:
Fractures
Orthopedic surgery
Trauma
Assess:
Pain
Pulses
Capillary refill
Temperature
Sensation
Movement
These findings help identify evolving vascular compromise.
Patient:
Smoker
Diabetes
Calf pain while walking
Weak dorsalis pedis pulse
Hair loss
Think:
Peripheral Arterial Disease.
Patient:
Brown ankles
Edema
Varicose veins
Venous ulcer
Think:
Chronic Venous Insufficiency.
Patient:
Recent knee replacement
Unilateral calf swelling
Warmth
Tenderness
Think:
Deep Vein Thrombosis.
Patient:
Sudden cold foot
Absent pulse
Severe pain
Numbness
Think:
Acute Limb Ischemia.
Medical emergency.
Bilateral lower extremities warm and well perfused. Dorsalis pedis and posterior tibial pulses 2+ bilaterally. Capillary refill less than 2 seconds. No edema or skin discoloration. No varicosities or ulcers noted.
Left lower extremity cool and pale with absent dorsalis pedis pulse. Capillary refill 5 seconds. Patient reports severe pain and numbness. Findings concerning for acute arterial insufficiency. Provider notified immediately.
"I am calling regarding acute changes in circulation to the patient's left leg."
"The patient has a history of peripheral arterial disease."
"The left foot is pale, cool, pulseless, and painful. Capillary refill is markedly delayed. The patient reports increasing numbness."
"I recommend immediate evaluation because I am concerned about acute limb ischemia."
Confusing arterial ulcers with venous ulcers.
Assuming bilateral edema always indicates heart failure.
Using Homan's sign to diagnose DVT.
Ignoring unilateral swelling.
Forgetting to assess pulses.
Not comparing both extremities.
Elevating a severely ischemic leg without considering the clinical context.
Ignoring diabetic foot changes.
A patient reports calf pain while walking that improves with rest. Which condition is most likely?
A. Chronic venous insufficiency
B. Peripheral arterial disease
C. Cellulitis
D. Deep vein thrombosis
Answer: B
Rationale: Intermittent claudication is the hallmark symptom of PAD.
Which assessment finding is most concerning for acute limb ischemia?
A. Bilateral ankle swelling
B. Brown discoloration near the ankles
C. Cold, pale foot with absent pedal pulse
D. Mild varicose veins
Answer: C
Which patient is at greatest risk for a deep vein thrombosis?
A. A healthy runner
B. A patient one day after hip replacement surgery who has remained in bed
C. A teenager with a sprained ankle
D. A patient with seasonal allergies
Answer: B
An ankle-brachial index (ABI) of 0.65 suggests:
A. Normal circulation
B. Mild venous insufficiency
C. Peripheral arterial disease
D. Normal aging
Answer: C
Which finding best differentiates chronic venous insufficiency from peripheral arterial disease?
A. Pain with walking
B. Weak pedal pulses
C. Brown skin discoloration with ankle edema
D. Cool, hairless feet
Answer: C
Think:
"Pain with Pace."
Walking causes pain.
Think:
"Veins Volume Up."
Blood pools, causing swelling and edema.
Remember the 6 P's:
Pain
Pallor
Pulselessness
Paresthesia
Paralysis
Poikilothermia
Think:
"One Leg Swells."
Unilateral swelling should always raise concern.
Arm vs. Ankle
A lower ankle pressure compared with the arm suggests arterial disease.
Without looking at your notes:
What causes peripheral arterial disease?
What is intermittent claudication?
What are the 6 P's of acute limb ischemia?
How do arterial ulcers differ from venous ulcers?
What causes chronic venous insufficiency?
What are the three components of Virchow's triad?
Why is a DVT dangerous?
What are the typical characteristics of lymphedema?
What does the ABI measure?
Which vascular findings require immediate provider notification?
Practice a focused vascular assessment on a classmate or simulation patient:
Inspect both lower extremities.
Compare skin color and temperature.
Palpate all major lower-extremity pulses.
Assess capillary refill.
Check for edema and grade it if present.
Inspect for arterial and venous ulcers.
Identify signs of PAD, CVI, DVT, and lymphedema.
Perform a neurovascular assessment (pain, pulses, capillary refill, sensation, movement).
Practice communicating urgent findings using SBAR.
Document the assessment using accurate nursing terminology.
Today you learned how to recognize and differentiate the most common peripheral vascular disorders encountered in nursing practice. You can now identify the characteristic findings of peripheral arterial disease, chronic venous insufficiency, deep vein thrombosis, acute limb ischemia, and lymphedema. You also learned how to interpret the ankle-brachial index, understand the role of Doppler assessment, and recognize vascular emergencies requiring immediate intervention.