Depending on physician orders, DuoDerm dressings can be used on stage 1, 2, 3 and 4 bed sores. The length of time a DuoDerm patch may be left on a wound is determined by the amount of moisture in the wound. Under normal conditions, DuoDerm can be left on the wound for 3-4 days.ecause DuoDerm essentially creates a moisture barrier, they should not be used on people with infected bed sores. Under normal circumstances, wounds covered with DuoDerm are likely to develop a strong odor after several days. The odor is consider to be a normal part of of the product.
Nicotine is detectable in a urine test for 2-4 days. A blood test will detect nicotine for up to 2-4 days. A saliva test will detect nicotine from 1-4 days. Nicotine, like many other drugs, can be detected with a hair follicle drug test for up to 90 days.
But for those who are passive smokers the traces of nicotine can be found for as long as 15-20 days... The answer to the question as to how long does nicotine stay in your blood rests on the fact that it gets transformed into a metabolite called cotinine which mixes in the blood and affects the body.