Staging pressure injuries in darkly pigmented skin

Andrea Kirk, the Pressure Injury Coordinator CNS at Western Sydney Local Health District is the guest speaker at the upcoming webinar 'Staging pressure injury in darkly pigmented skin' in association with the Australian College of Nursing. Ahead of this Stop Pressure Injury Day event Andrea offers her insights around pressure injury and in particular the challenges of staging pressure injury in darkly pigmented skin. 

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A pressure injury, also known as a pressure ulcer, pressure sore or bed sore, is caused by unrelieved pressure and/or shear forces on any part of the body. Anytime you lie or sit down in the same position for a period of time, pressure is applied to different parts of your body. Any object that has continuous contact with your skin has the potential to cause a pressure injury. (Clinical Excellence Queensland, 2019). In order to fully assess patients for pressure injuries, skin assessments need to be comprehensive. This is particularly important in darker pigmented skin as visual colour changes are often difficult to detect.

 

What kind of patients are particularly prone to pressure injuries (PIs)?

Pressure injuries are the result of sustained unrelenting pressure that is not relieved by normal mobilization.

Those prone to PIs include older people, those with multiple comorbidities such as Peripheral Vascular Disease, diabetes etc., palliative or chemo patients, those who may be incontinent, malnourished, sitting/lying on an inappropriate surface, experiencing poor skin condition e.g. dry, current PI, reactions to certain medications and/or those with reduced mobility, particularly chair-bound.

PIs can also be caused by devices such as gastric tubes, catheters and tape.

 

Why is it challenging to detect PIs in darkly pigmented skin?

Early changes that are detected such as redness and slower capillary refill are not picked up in darker pigmented skin or may be more subtle. Therefore, Stage 1 and Suspected Deep Tissue Injuries (sDTI) are easily missed. Stage 1 shows as a non-blanchable redness and sDTI shows as a purple/maroon colour. With a comprehensive skin assessment changes such as temperature and oedema can be picked up.

 

What are some other signs of PIs in dark skin?

Cooler or hotter skin, harder or softer tissue when compared to surrounding skin.

 

What are some key elements of preventing PIs in dark-skinned patients?

Comprehensive skin assessments will allow tissue changes to be picked up sooner plus the same prevention as with all people e.g. regular offloading of bony prominences, checking under devices, alternating air mattresses, good nutrition, dressings, Incontinence Associated Dermatitis prevention, etc.

 

Are there any technological advances designed to overcome the difficulties in detecting pressure damage in people with darker skin?

Other than the comprehensive skin assessment the only device I’m aware of is the Sub-Epidermal Moisture (SEM) scanner that would detect the shift in oedema to the damaged tissue.

We know from evidence that particularly Stage 1 PIs are under-reported in the darker pigmented skin compared to lighter pigmented skin. This is not because it is believed they are less at risk but that people cannot see subtle changes to the skin.

 
Author: 
Andrea Kirk, Pressure Injury Coordinator CNS,
Western Sydney Local Health District

 

To gain a deeper understanding into what you can do to avoid pressure injuries in darker pigmented skin, therefore reducing harm to patients from an injury that can mostly be avoided please contact us at enquiries.au@arjo.com

To find out more you can review the Prevention and Treatment of Pressure Ulcers/Injuries: Clinical Practice Guideline, The International Guideline, 3rd Edition (2019) http://www.internationalguideline.com/ 

 


References:

Clinical Excellence Queensland, Pressure Injury Prevention, 2019, < https://clinicalexcellence.qld.gov.au/priority-areas/safety-and-quality/pressure-injury-prevention> Retrieved 18 Nov 2019