Missed Pulmonary Embolism + DVT Prophylaxis Malpractice

Published 2026-05-27 · John Mahoney · MedLegal AI

Pulmonary embolism is the third most common cause of in-hospital cardiovascular death. Many PE deaths are preventable through proper risk stratification, prophylactic anticoagulation, and timely recognition. Two case types dominate this area of malpractice: (1) PE that occurred because DVT prophylaxis was not given despite risk factors, and (2) PE that progressed to death because the diagnosis was delayed when the patient presented with symptoms.

The Risk Stratification Standard

Hospitalized patients require VTE risk assessment on admission. Two validated scoring systems:

• Caprini Score — surgical patients. 0-1 low risk; 2 moderate; 3-4 high; 5+ very high. Determines mechanical vs pharmacologic prophylaxis selection.
• Padua Score — medical patients. ≥4 = high risk, indicating pharmacologic prophylaxis.

Standard of care: every hospital should have a VTE risk assessment in the admission order set. Failure to perform risk assessment, OR performing it incorrectly, OR failing to act on the score with appropriate prophylaxis is documented breach.

Prophylaxis Standard

For moderate-risk patients (Caprini 2 or Padua <4): mechanical prophylaxis (sequential compression devices) is acceptable. For high-risk patients: pharmacologic prophylaxis with low-molecular-weight heparin or unfractionated heparin (or DOAC alternatives in selected populations) is standard.

Contraindications: active bleeding, recent intracranial hemorrhage, severe thrombocytopenia, hypersensitivity. When contraindications exist, IVC filter may be appropriate — but the contraindication and the alternative chosen must be documented.

Common breaches:

• VTE risk assessment not done at all (despite Joint Commission requirement)
• High-risk patient given only mechanical prophylaxis
• Pharmacologic prophylaxis ordered but not actually administered (MAR shows missed doses)
• Prophylaxis held for an OR procedure but not restarted
• Discharge without anticoagulation despite ongoing risk

The MAR audit

Medication Administration Records often show prophylaxis was ordered but not administered. Common patterns:

• Patient refused (must be documented WHY and what alternative was offered)
• Held for procedure (must be documented WHEN to restart)
• Held for "thrombocytopenia" without documenting platelet count
• Held by nursing without physician notification

Recognition Standard

Once PE develops, timely recognition is the second causation question. Symptoms include sudden dyspnea, pleuritic chest pain, tachycardia, hypoxia, hemoptysis, syncope. Risk stratification tools:

• Wells Score for PE — clinical probability assessment
• PERC Rule — rule-out criteria for low-risk patients
• D-dimer — high sensitivity, useful for ruling out
• CT pulmonary angiography — gold standard imaging

Standard of care: any patient with risk factors plus suspicious symptoms requires D-dimer and/or CTPA. Failure to order in a patient meeting criteria is breach.

Causation in PE Death Cases

For prophylaxis-failure cases: published outcome data establishes prophylaxis effectiveness. LMWH prophylaxis reduces post-surgical VTE by approximately 70%. Number needed to treat is well-defined. Your expert can quantify the patient's PE risk with vs without prophylaxis.

For recognition-failure cases: mortality of treated PE is approximately 8%. Mortality of untreated or delay-treated PE rises substantially with each hour. Hemodynamically unstable PE has 15%+ mortality if untreated within hours.

Discovery Targets

• Admission VTE risk assessment (or absence thereof)
• Prophylaxis orders and MAR for the entire admission
• Nursing assessment of pain, dyspnea, leg swelling for the days preceding event
• Vital signs trends — tachycardia and hypoxia are classic PE harbingers
• Lab results including D-dimer and platelet counts
• Any imaging ordered and the timing
• Hospital's VTE prevention protocols and compliance audits
• Code blue and rapid response documentation if PE was the terminal event
• Autopsy report establishing PE as cause of death

Damages

PE death cases involve standard wrongful death damages. Many patients are working-age with substantial pecuniary loss to the family. PE survival with chronic thromboembolic pulmonary hypertension (CTEPH) involves lifetime cardiology care, possible thromboendarterectomy surgery, lung transplant possibility — cases routinely reach $5M+.

Bottom Line

PE malpractice cases have well-defined standards (Joint Commission VTE prevention requirement), bright-line breach evidence (MAR shows missed doses), and strong causation data (outcome studies). When prophylaxis was not administered or the diagnosis was delayed, the path to plaintiff verdict is straightforward.

Related: ED discharge malpractice, ICU malpractice cases.