complications-of-pulmonary-embolism

complications-of-pulmonary-embolism

Complications of Pulmonary Embolism
Authors:
Dean Percy, Yan Yu
Reviewers:
Tristan Jones, Ciara Hanly, Jieling Ma (􏰁􏰃􏰄), Dr. Man- Chiu Poon*, Dr. Lynn Savoie* * MD at time of publication
Venous Stasis
Hypercoagulable state Virchow’s Triad
Deep Vein Thrombosis
Vessel Injury
Popliteal, femoral, iliac veins
Clot migrates à IVC à Right Atrium of heart à Right
ventricleàgets lodged in pulmonary arteries/arterioles Clot obstructs pulmonary
arterial/arteriolar flow
Clot prevents blood flow to lungàischemia
Increased pulmonary artery pressure
Lung infarction Inflammation (inflammatory
cell invasion, ↑ pulmonary vessel permeability
Acute Respiratory Distress Syndrome
Failure to oxygenate Failure to ventilate
Respiratory Failure
(“hypercapnic”: patient has high blood [CO2])
Acute: Congestive Heart Failure (Right Sided)
Cardiogenic Shock
(heart fails to pump against increased pressure)
Pulseless Electrical Activity
(ECG activity in the absence of a palpable pulse)
If Chronic:
Pulmonary Hypertension
(High blood pressure only in the pulmonary vasculature, not in the systemic vasculature)
Legend:
Pathophysiology
Mechanism
Sign/Symptom/Lab Finding
Complications
Published August 7, 2012, updated Aug 18, 2021 on www.thecalgaryguide.com