We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App





Chest CT Scans of COVID-19 Patients Could Help Distinguish Between SARS-CoV-2 Variants

By HospiMedica International staff writers
Posted on 28 Jun 2022
Print article
Image: Chest CTs reveal Omicron variant is less severe than Delta variant infection (Photo courtesy of Oxford University)
Image: Chest CTs reveal Omicron variant is less severe than Delta variant infection (Photo courtesy of Oxford University)

The SARS-CoV-2 Omicron variant has demonstrated rapid spread but with reduced disease severity. Patients with Omicron infection have half the odds of hospitalization and of severe disease than those infected with Delta and preceding variants. Furthermore, the risk of being admitted to hospital for Omicron infection is 65% lower for vaccinated compared to unvaccinated individuals. However, there is limited data on differential severity and outcomes between variants once patients are admitted to hospital for SARS-COV-2. A recent study had demonstrated that vaccinated patients with SARS-COV-2 ‘breakthrough’ infections show fewer chest CT findings of pneumonia compared with unvaccinated patients, although variant status in this study was unknown. Now, a new study has found that the SARS-COV-2 Omicron variant is associated with fewer and less severe changes on chest CT compared with the Delta variant. The study also found that patients with Omicron had greater frequency of bronchial wall thickening but lower clinical severity and improved hospital outcomes than those with Delta.

In a retrospective analysis, researchers at the Oxford University Hospitals NHS Foundation Trust (Oxford, UK) compared the radiological pattern, imaging characteristics and disease severity on initial CT pulmonary angiograms of patients infected with the Omicron variant with those infected with the Delta variant, as well as compared the imaging severity according to vaccination status.

In a small series of hospitalized patients who had tested RT-PCR positive for SARS-CoV-2 with CT pulmonary angiography performed within seven days of admission, the researchers found that the Omicron variant infection is less likely to be associated with SARS-CoV-2 pneumonia, and that, when pneumonia does occur, it is less severe on chest CT. In agreement with chest CT patterns, Omicron infection was associated with reduced clinical and biochemical markers of severity and improved hospital outcomes. The researchers found lower CT severity scores (7.2) and increased incidence of bronchial wall thickening in the Omicron group. In terms of vaccination status, those who were vaccinated also recorded lower CT severity scores. These findings were consistent, regardless of the interpreting radiologist’s experience level.

Related Links:
Oxford University Hospitals NHS Foundation Trust


Print article
IIR Middle East

Channels

Critical Care

view channel
Image: Three dimensional measurement of the all-mesh thermistor (Photo courtesy of Shinshu University)

Ultraflexible, Gas-Permeable Thermistors to Pave Way for On-Skin Medical Sensors and Implantable Devices

On-skin medical sensors and wearable health devices are important health care tools that must be incredibly flexible and ultrathin so they can move with the human body. In addition, the technology has... Read more

Surgical Techniques

view channel
Image: The POINT Kinguide robotic-assisted surgical system has made its debut in the US (Photo courtesy of Point Robotics)

First-Ever Spinal Surgical Hand-Held Robot Makes Worldwide Debut

The world’s first ever hand-held robot framework equipped with a parallel manipulator for orthopedic application has made its worldwide debut in the U.S. Point Robotics MedTech Inc. (Taipei, Taiwan) has... Read more

Patient Care

view channel
Image: The biomolecular film can be picked up with tweezers and placed onto a wound (Photo courtesy of TUM)

Biomolecular Wound Healing Film Adheres to Sensitive Tissue and Releases Active Ingredients

Conventional bandages may be very effective for treating smaller skin abrasions, but things get more difficult when it comes to soft-tissue injuries such as on the tongue or on sensitive surfaces like... Read more

Health IT

view channel
Image: Using digital data can improve health outcomes (Photo courtesy of Unsplash)

Electronic Health Records May Be Key to Improving Patient Care, Study Finds

When a patient gets transferred from a hospital to a nearby specialist or rehabilitation facility, it is often difficult for personnel at the new facility to access the patient’s electronic health records... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.