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Related Concept Videos

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

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Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
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Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
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Pulmonary Embolism III: Nursing Management01:27

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A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Venous Thrombosis I: Introduction01:30

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Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
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Negative D -Dimer With Single-Subsegmental Pulmonary Embolism.

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Summary
This summary is machine-generated.

A negative d-dimer test did not rule out pulmonary embolism (PE) in a high-risk patient. Clinical judgment and imaging are crucial for diagnosing PE in emergency departments, especially with prior thromboembolic history.

Keywords:
CT pulmonary angiographyemergency departmentpulmonary embolismrisk stratification

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Radiology

Background:

  • Pulmonary embolism (PE) presents diagnostic challenges in the emergency department (ED) due to nonspecific symptoms.
  • A history of cesarean section and prior PE increases patient risk.
  • D-dimer testing is commonly used but can be unreliable in certain patient populations.

Purpose of the Study:

  • To highlight the importance of clinical judgment in diagnosing PE.
  • To emphasize that a negative d-dimer should not exclude PE in high-risk individuals.
  • To underscore the role of imaging in confirming PE diagnosis.

Main Methods:

  • Case study presentation of a 37-year-old woman with pleuritic chest pain and recent cesarean section.
  • Initial d-dimer testing resulted in a negative outcome.
  • CT pulmonary angiography was performed due to persistent clinical suspicion.

Main Results:

  • CT pulmonary angiography revealed a single-subsegmental PE.
  • The negative d-dimer result was misleading in this high-risk patient.
  • Outpatient anticoagulation with Eliquis was initiated.

Conclusions:

  • Negative d-dimer results should be interpreted cautiously in patients with high-risk factors or prior thromboembolic events.
  • Clinical suspicion and diagnostic imaging remain essential for accurate PE diagnosis in the ED.
  • Personalized risk stratification and treatment are vital for managing PE.