PE — the plain-language one-pager.

What is Pulmonary Embolism?Diagnosis

Pulmonary Embolism (PE) is when a blood clot — almost always from a DVT in the leg or pelvis — breaks off, travels through the heart, and lodges in the pulmonary arteries. PE blocks blood flow to part of the lung, drops oxygen, and strains the right side of the heart. Massive PE can stop the heart in minutes. But low-risk PE, caught early and treated promptly, has a survival rate above 95%. Speed of recognition is everything.

• Classic signs — Sudden shortness of breath, sharp chest pain (often worse with deep breath), fast heart rate, lightheadedness or fainting, coughing up blood, leg swelling/pain (the source DVT). Many PEs are subtle — fatigue, mild dyspnea, low oxygen on a pulse ox.
• PE risk = DVT risk — surgery, hospitalization, long immobilization, pregnancy, hormonal contraception, cancer, obesity, smoking, prior DVT/PE, inherited clotting disorders, and severe COVID-19.
• Diagnosis — Wells score → D-dimer → CT pulmonary angiography (CTPA) is the gold standard. V/Q scan when CTPA is contraindicated (pregnancy, contrast allergy, kidney disease).
• Risk stratification matters more than just "PE diagnosed" — Massive PE (sustained hypotension, cardiac arrest) → emergency thrombolysis or thrombectomy. Submassive (right-heart strain, elevated troponin/BNP) → close monitoring, sometimes thrombolysis. Low-risk → anticoagulation, often outpatient with Hestia / sPESI scoring.

If you suspect a PE — call 911Know your plan

Massive PE is one of the few cardiovascular events where minutes matter as much as in heart attack and stroke. The deciding factor is door-to-call. Most PE deaths happen within hours of symptom onset, often before the diagnosis is made.

• Call 911 for: sudden severe shortness of breath; chest pain that worsens with breathing; coughing up blood; sudden fainting or near-fainting; sustained fast heart rate with breathlessness.
• Tell EMS your DVT/PE history + clotting disorder + current anticoagulant — they can pre-alert the hospital so a CTPA is ready.
• Do not drive yourself — collapse en route is the most common avoidable PE death.
• If you survive a massive or submassive PE, ask about a follow-up echocardiogram at 3-6 months to screen for chronic thromboembolic pulmonary hypertension (CTEPH) — a treatable late complication.

Your daily Force FieldLive It

• Take your anticoagulant every day, same time — missed doses dramatically raise PE recurrence in the first months.
• Move once cleared — early ambulation reduces recurrence and supports recovery.
• Compression stockings if there was a DVT — daytime, 20-30 mmHg.
• Avoid prolonged immobility — long flights and drives need walks every 1-2 hours, ankle pumps, hydration, no alcohol.
• Surgery + procedure plan — tell every surgeon and dentist about your PE. Plan bridging anticoagulation in advance.
• Cancer screening up to date — sometimes PE is the first sign of an undiagnosed cancer; ask your team if a workup is needed.
• Bleeding awareness — know what to do for falls, head injury, or persistent bleeding. Wear a medical ID.
• Pulmonary rehab after a large PE — improves exercise capacity and quality of life. Catches CTEPH early.

Red flags — call nowAction

• Call your clinic the same day for: new chest discomfort with exertion that goes away with rest (stable sudden chest pain or shortness of breath worth evaluating); a missed dose of antiplatelet or anticoagulant; medication side effects (muscle aches, bleeding, GI symptoms).
• Bring up at next visit: any change in exercise tolerance, lipid follow-up timing, BP log review, smoking-cessation support, depression screening, sleep concerns.