Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Jan 7;49(4):661–670. doi: 10.1097/CCM.0000000000004862

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Society of Critical Care Medicine and Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

PMC Copyright notice

Figure 4. — Microaggregates in coronavirus disease 2019 (COVID-19) patients. A, An example of a plugged vessel with microaggregates. B, Receiver-operating-characteristic curve analysis of the number of leukocytes, RBC microaggregate, the capillary-to-systemic hematocrit (cHct/sHct) ratio, and RBC velocity (RBCv) show that the number of leukocytes, cHct/sHct, and RBCv show the highest sensitivity and specificity for distinguishing COVID-19 patients from volunteers. C, The raised number of microaggregates measured in the image segments of the COVID-19 patients was much higher than that found in the volunteers. D, Presence of an RBC microaggregate as a dark thick band in the space time diagram indicative of RBC clumping in this capillary vessel. AUC = area under the curve.