Related Experiment Video
Updated: Dec 5, 2025

Optimization of the Longa Middle Cerebral Artery Occlusion Method for Complete Reperfusion
Published on: November 22, 2024
Cerebral Venous Sinus Thrombosis and Acute Myocardial Infarction in a Patient with PAI-1 4G/4G Homozygosity
Daniel Chiu1, Jesse Weinberger2
1Department of Neurology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1137, New York, NY 10029; Department of Neurology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029.
The plasminogen activator inhibitor-1 (PAI-1) 4G/4G homozygous genotype represents a genetic thrombophilia that has been associated with enhanced risk of arterial and venous thrombotic events. The optimal anticoagulation strategy for PAI-1 4G homozygous patients is unclear. Herein we present a case of a patient with PAI-1 4G/4G homozygosity who was placed on dabigatran after developing cerebral venous sinus thrombosis (CVST), but who then suffered an acute myocardial infarction several weeks later. We seek to highlight the relationship between the PAI-1 4G/4G genotype and risk of CVST, as well as discuss our management strategy in the aftermath of dabigatran failure.
The plasminogen activator inhibitor-1 (PAI-1) 4G/4G homozygous genotype represents a genetic thrombophilia that has been associated with enhanced risk of arterial and venous thrombotic events. The optimal anticoagulation strategy for PAI-1 4G homozygous patients is unclear. Herein we present a case of a patient with PAI-1 4G/4G homozygosity who was placed on dabigatran after developing cerebral venous sinus thrombosis (CVST), but who then suffered an acute myocardial infarction several weeks later. We seek to highlight the relationship between the PAI-1 4G/4G genotype and risk of CVST, as well as discuss our management strategy in the aftermath of dabigatran failure.
Related Concept Videos
Venous Thrombosis I: Introduction
Peripheral Artery Disease I: Introduction
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

