Dating bruises

However, there is much confusion in the literature and clinical practice as to the accuracy of dating bruises. This article will demonstrate that using the color of.
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• Dating of bruises in children: an assessment of physician accuracy.
• Can one accurately date a bruise? State of the science.
• Geminiresearchnews.com
• Dating yellow bruises

To determine whether physicians can estimate accurately the age of an accidental bruise on direct physical examination. Children who presented to the emergency department of a children's hospital with accidental bruises of known age and origin had demographic data and information about their injury recorded. History-blinded emergency pediatricians, other physicians, and trainees fellows, residents, and medical students independently examined the bruised area and recorded injury characteristics and age estimation and ranked characteristics that influenced their estimation.

Fifty children with accidental bruises were enrolled. Emergency pediatricians' accuracy of age estimation within 24 hours of actual age was At first, a bruise is red, then purplish, blue, green and yellow before turning brown. Researchers use the natural metabolic changes that occur in haemoglobin, a protein that give blood its red colour, to date the mark. As days pass, haemoglobin breaks down into different chemical compounds — each with distinctive colours. The amount of bilirubin reaches a peak after approximately four days, followed by a gradual reduction.

The theoretical basis for this technology has been developed by Professor Lars Svaasand. In principle, the technology is simple: A lamp emits white light towards the bruise.

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• THE NAKED AND SUBJECTIVE EYE?

White light consists of all the colours of the rainbow. The light reflected by the skin is measured by a spectrometer,which specifically measures how much of each colour is reflected.

This indicates how far the metabolic process has come. Using the reflected light, researchers can record the amount of blood in the bruise and the oxygen level in the blood. Based on these factors, Randeberg is developing an algorithm — the key to interpreting bruise dates. This part of the study confirmed that it is possible to find traces of yellow bilirubin in bruises before it is visible to the naked eye, and that the development of bruises is fairly similar in young and healthy people.

In the autumn of the research team enlarged their research material by including patients who have undergone heart surgery at St. Additionally, this is a different age group, so that we can investigate whether age makes a difference in the timing of bruise breakdown. The research team will also try to increase their understanding of how injuries may have appeared; how powerful the blow was, and what type of object could have caused the bruise.

It is possible the technology of dating bruises can be employed in other areas as well. In the future, researchers think it could be used to more accurately establish the time of death for victims of violence. International medical technology firms find this research very interesting, and the team members hope their work will someday result in this technology being standard in emergency response departments across Norway. On average, women live longer than men. Researchers have established a technique that will help ensure a stable supply of electricity even as new renewable energy sources come on line.

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Dating yellow bruises

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