Online Safety Community

Monitoring the heart’s mitochondria to predict cardiac arrest?

IMAGECredit: Dr. John Kheir, Boston Children’s Hospital & Shutterstock

A new device can assess in real time whether the body’s tissues are receiving enough oxygen and, placed on the heart, can predict cardiac arrest in critically ill heart patients, report researchers at Boston Children’s Hospital and scientists from Cambridge device maker Pendar Technologies. Their study, conducted in animal models, is the cover article in today’s issue of Science Translational Medicine.

 

“With current technologies, we cannot predict when a patient’s heart will stop,” says John Kheir, MD of Boston Children’s Heart Center, who co-led the study. “We can examine heart function on the echocardiogram and measure blood pressure, but until the last second, the heart can compensate quite well for low oxygen conditions. Once cardiac arrest occurs, its consequences can be life-long, even when patients recover.”

The device uses a technology called resonance Raman spectroscopy to measure whether enough oxygen is reaching the mitochondria, the organelles that provide cells with energy. In critically ill patients with compromised circulation or breathing, oxygen delivery is often impaired, making it hard for mitochondria to do their job. This is especially a problem for the heart, which has constant high energy needs.

The current standard for measuring tissue oxygenation, known as mixed venous saturation (SvO2), requires repeated blood draws, adding extra risk in critically ill patients. More importantly, SvO2 cannot tell whether oxygen supply is sufficient to meet the dynamic demands of heart muscle.

“We wanted to create an organ-specific, continuous, reliable readout of how adequately mitochondria are being fed oxygen,” says Kheir. “This is the first demonstration of a device that can monitor mitochondria in living tissues to predict impending organ failure.”

Using light to monitor mitochondria

This technology is the product of a collaboration between the Translational Research Lab in Boston Children’s Heart Center, co-led by Kheir and Brian Polizzotti, PhD, and Pendar Technologies (Cambridge, Mass.). “At the bedside, we saw patients who had a limitation to coronary blood flow, and wanted a device that could provide an early warning sign,” Kheir says.

The team created a metric they call 3RMR that uses light readings generated by resonance Raman spectroscopy to quantify oxygenation and mitochondrial function in real time.

 

Read More: http://snip.ly/bt6o8#https://scienmag.com/monitoring-the-hearts-mit...

Views: 19

Comment

You need to be a member of Online Safety Community to add comments!

Join Online Safety Community

Take our poll!

Take our poll!

Latest Activity

HrishikeshRam posted a photo

Nebosh course in Chrennai | Safety training institute

Learners seeing for NEBOSH Training Course in Chennai and other safety officer course in Chennai should direct their requests to the below mentioned address details.In Green World Group we provide NEBOSH, IOSH, HAZOP and various Customized and…
8 hours ago
G L Deepa posted photos
8 hours ago
Nakul Pratap posted photos
8 hours ago
Arifa Khan posted photos
8 hours ago

Forum

Gig Economy

The career world has rapidly changed and these days, long-term careers and people working in just one job are slowly but steadily becoming a thing of the past. In fact, according to research, in the…Continue

Tags: field, engineer, IT, freelance, economy

Started by Mohd Azher 9 hours ago.

How to Repair MySQL InnoDB Table That Has Issues?

When trying to run: delete IdentityRequest *I get an error of sailpoint.tools.GeneralException: null index column for collection: sailpoint.object.IdentityRequest.itemsDoing a select * from…Continue

Tags: course, sailpointonline, sailpoint

Started by Soujanya Naganuri yesterday.

Occupational Health and Safety 7 Replies

Health and safety are important aspects of an organisation’s smooth and effective functioning.  Did you know that workplace health & safety injuries cost Australian businesses over $60 billion…Continue

Tags: Safety, and, Health, Occupational

Started by WHS Solutions. Last reply by Tony Ferraro on Sunday.

About sailpoint software

An identity management system refers to an information system, or to a set of technologies that can be used for enterprise or cross-network identity management. Additional terms are used synonymously…Continue

Tags: sailpoint

Started by sujathayarlagadda on Friday.

What can be essentials safety measures taken to secure campus?

Students safety inside and outside the school premises is a huge concern in today's risk environment. what measures should be taken to ensure campus security?Continue

Tags: security, campus

Started by Jen McDade Feb 6.

Badge

Loading…

© 2018   Created by Safety Community.   Powered by

Badges  |  Report an Issue  |  Terms of Service