side by side comparison

DVT vs Pulmonary Embolism: Clot in the Leg vs Clot in the Lung

A client with calf swelling yesterday now has sudden dyspnea and chest pain today — that DVT just migrated to the lungs. Mixing up leg-clot findings with lung-clot findings on the NCLEX means you miss the respiratory emergency and choose the wrong priority action.

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Comparison

Side-by-side2 compared
Dimension
DVT
Pulmonary Embolism
Clot location & onset
  • Deep leg veins (femoral, popliteal)
  • Gradual onset over hours to days
  • Clot lodges in pulmonary arteries
  • Sudden onset — seconds to minutes
Key findings
  • ★Unilateral leg edema, warmth, erythema
  • Palpable cord
  • dull calf pain worse standing
  • ★Sudden dyspnea + pleuritic chest pain
  • Tachypnea, tachycardia, anxiety/doom
  • hemoptysis
Diagnostics & vitals
  • Duplex compression venous ultrasound
  • Lungs clear, SpO₂ normal, stable VS
  • CT pulmonary angiography (CTPA)
  • ↑ D-dimer
  • ★Hypoxemia SpO₂ <94%
  • tachypnea >20
Nursing priorities
  • Elevate extremity
  • initial bed rest
  • Never massage the affected leg
  • High-flow O₂
  • support oxygenation
  • Prepare for possible code
Treatment
  • Anticoagulate: heparin/LMWH then warfarin/DOAC
  • Emergent heparin bolus + drip
  • Massive PE: thrombolytics (tPA) or embolectomy
Prevention & teaching
  • Early ambulation post-op
  • SCDs, TED hose
  • Prophylactic enoxaparin
  • stay hydrated
  • Prevent DVT — same measures
  • IVC filter if anticoagulation contraindicated
Red flags — escalate
  • ★New dyspnea/chest pain then clot embolized
  • Hypotension + right heart strain then massive PE
Complications
  • Embolization to lungs (PE)
  • Post-thrombotic syndrome
  • Cardiac arrest from massive PE
  • Right heart failure
Clot location & onset

DVT

  • Deep leg veins (femoral, popliteal)
  • Gradual onset over hours to days

Pulmonary Embolism

  • Clot lodges in pulmonary arteries
  • Sudden onset — seconds to minutes
Key findings

DVT

  • ★Unilateral leg edema, warmth, erythema
  • Palpable cord
  • dull calf pain worse standing

Pulmonary Embolism

  • ★Sudden dyspnea + pleuritic chest pain
  • Tachypnea, tachycardia, anxiety/doom
  • hemoptysis
Diagnostics & vitals

DVT

  • Duplex compression venous ultrasound
  • Lungs clear, SpO₂ normal, stable VS

Pulmonary Embolism

  • CT pulmonary angiography (CTPA)
  • ↑ D-dimer
  • ★Hypoxemia SpO₂ <94%
  • tachypnea >20
Nursing priorities

DVT

  • Elevate extremity
  • initial bed rest
  • Never massage the affected leg

Pulmonary Embolism

  • High-flow O₂
  • support oxygenation
  • Prepare for possible code
Treatment

DVT

  • Anticoagulate: heparin/LMWH then warfarin/DOAC

Pulmonary Embolism

  • Emergent heparin bolus + drip
  • Massive PE: thrombolytics (tPA) or embolectomy
Prevention & teaching

DVT

  • Early ambulation post-op
  • SCDs, TED hose
  • Prophylactic enoxaparin
  • stay hydrated

Pulmonary Embolism

  • Prevent DVT — same measures
  • IVC filter if anticoagulation contraindicated
Red flags — escalate

DVT

  • ★New dyspnea/chest pain then clot embolized

Pulmonary Embolism

  • Hypotension + right heart strain then massive PE
Complications

DVT

  • Embolization to lungs (PE)
  • Post-thrombotic syndrome

Pulmonary Embolism

  • Cardiac arrest from massive PE
  • Right heart failure

★ marks the fact that sets a column apart.

Clinical Pearl

Swollen hot leg = DVT stays put. Sudden dyspnea + chest pain = the clot moved to the lungs.

Component Topics

Deep Vein ThrombosisPulmonary Embolism

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