Related Experiment Video
Updated: Aug 28, 2025

Sub-acute Cerebral Microhemorrhages Induced by Lipopolysaccharide Injection in Rats
Published on: October 17, 2018
Cerebral microhemorrhages in severe COVID-19 pneumonia
Melvin Parasram1, Shamelia Y Loiseau1
1Department of Neurology, Weill Cornell Medicine, New York City, New York, United States.
Background:
Cerebral microhemorrhages are a complication in patients with severe COVID-19 pneumonia.
Case Description:
A 50-year-old woman presented to the hospital with shortness of breath due COVID-19 (SARS-CoV-2, alpha variant) pneumonia. Her hospital course was complicated by hypoxic respiratory failure requiring intubation and severe acute respiratory distress syndrome. She received a tracheostomy for ongoing ventilator support after prolonged intubation. Her mental status was notable for disorientation and severe agitation for which a magnetic resonance imaging (MRI) of the brain was obtained. MRI revealed numerous microhemorrhages predominantly at the gray-white matter junctions.
Conclusion:
Cerebral microhemorrhages in severe COVID-19 pneumonia are associated with critical illness, increased mortality, and worse functional outcome. The pathophysiology of cerebral microhemorrhages in COVID-19 is unknown.
More Related Videos
09:04In Vivo Tracking of Edema Development and Microvascular Pathology in a Model of Experimental Cerebral Malaria Using Magnetic Resonance Imaging
Published on: June 8, 2017
09:14Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021