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A female asked:

How long does it take pressure sores to develop? how long does someone need to be in a bed before they are at risk of developing pressure sores?

4 doctor answers10 doctors weighed in
Dr. Christopher Khorsandi
Plastic Surgery 22 years experience
Pressure sores: It only takes 2 hours of pressure for a pressure sore to begin developing. Thus the guidelines for bedsore prevention advise turning patients every 2 hours.
Dr. Scott Bolhack
Wound care 35 years experience
Time to develop: It is very difficult to answer your question. The answer for a healthy person would be different from a person who is very ill. Being confined to a bed does not mean that you will develop ulcerations. Repositioning, type of mattress, and nutritiona are just some of the other factors that make answering your question difficult.
Dr. Holly Maes
Pediatrics 36 years experience
Time varies: The time to a pressure sore is dependent on a number of different factors. General health of person, condition of skin in general, nutritional status, weight of patient, amount of mobility and movement able to be achieved. I've seen them develop in just days, yet i've seen people who are immobile go weeks without developing them. The key is to monitor and prevent them, or catch them early on.
Dr. Scott Bolhack
Wound care 35 years experience
Cause Pressure Sore: Pressure causes a bed sore. One unknown is how long does it take a pressure ulcer to develop. There are many risk factors including diabetes mellitus, low blood pressure, moisture from incontinence or perspiration, fungal infection, use of medical devices, etc. We simply do not know for an individual patient whether rotating them every five minutes or every two hours will prevent pressure injury.

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Last updated Apr 1, 2019

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