If the drainage is thin and clear, it's serum, also known as serous fluidThe serous membrane (or serosa) is a smooth tissue membrane of mesothelium lining the contents and inner walls of body cavities, which secrete serous fluid to allow lubricated sliding movements between opposing surfaces.https://en.wikipedia.org › wiki › Serous_membrane
Purulent drainage is a sign of infection. It's a white, yellow, or brown fluid and might be slightly thick in texture. It's made up of white blood cells trying to fight the infection, plus the residue from any bacteria pushed out of the wound. There may be an unpleasant smell to the fluid, as well.
It's common to have small amounts of fluid drain or ooze from a scrape. This oozing usually clears up gradually and stops within 4 days. Drainage is not a concern as long as there are no signs of infection.
A weeping wound can soften the wound bed and damage surrounding skin. In turn, this endangers healing and provides a nutritional environment for germs. If you have a weeping wound, it's important to absorb the excess fluid without drying it out and apply an appropriate wound dressing.
Poor Circulation
During the healing process, your body's red blood cells carry new cells to the site to begin rebuilding tissue. Poor blood circulation can slow down this process, making the wound that much longer to heal. Chronic conditions, such as diabetes and obesity, can cause poor blood circulation.
Apply pressure to the area using a clean and dry absorbent material – such as a bandage, towel or handkerchief – for several minutes. If the cut is to your hand or arm, raise it above your head to help reduce the flow of blood.
An infected wound can produce a yellowish, bad-smelling fluid called pus. When fluid seeps from a wound, it is called wound drainage.
Signs of wound infection
But cloudy, yellow-ish drainage or purulent discharge with a pungent or foul odor accompanied with swelling and elevated pain is a sign of an infected wound. Pimple: When a pimple-like crust forms on an injury, it indicates an infection.
You also may see some clear fluid oozing from the wound. This fluid helps clean the area. Blood vessels open in the area, so blood can bring oxygen and nutrients to the wound. Oxygen is essential for healing.
Once you stop the bleeding and clean the wound, you should apply a clean bandage. Here's why: Air dries out the wound and promotes cell death, not healing. Covering the wound maintains the natural moisture that helps keep cells alive.
Color is generally clear to pale yellow (normal), red (fresh blood), brown (dried or old blood), white (see above), or blue-green (usually indicative of Pseudomonas infection and should be cultured). The amount of drainage is generally documented as absent, scant, minimal, moderate, large, or copious.
Serous drainage
It is often thin and watery and will usually have a clear to yellowish or brownish appearance. Small amounts of serous drainage are normal during the first stages of healing. Continuous serous drainage may be a sign that there are high levels of bacteria living on the surface of the wound.
When you get a scrape or an abrasion, serous fluid (which contains serum) can be found at the healing site. Serous fluid, also known as serous exudate, is a yellow, transparent liquid that aids the healing process by providing a moist, nourishing environment for the skin to repair.
Remodeling or also known as maturation phase is the fourth and final phase in wound healing and lasts from 21 days up to 2 years. In this final and longest phase, collagen synthesis is ongoing in order to strengthen the tissue. Remodeling occurs as wound continues to contract and fibers are being reorganized.
Healthy granulation tissue is pink in colour and is an indicator of healing. Unhealthy granulation is dark red in colour, often bleeds on contact, and may indicate the presence of wound infection.
Sometimes a wound is clean but there's a risk of infection because of where it is on the body. If the wound is in an area that has more bacteria — like the urinary tract, gastrointestinal system, or respiratory system — fluids and other contaminants could get into the wound and cause infection.
Moisture in the wound is essential for healing; however, excessive moisture is harmful. Normally, the fluid coming from the wound is very rich in protein-melting enzymes which help to remove dead tissue from the wound bed. Because these enzymes can melt protein, they can also melt the normal skin around the wound.
If the wound environment is dry, the cells will have to find moisture deep in the wound bed so that they can migrate. This slows down the healing process. In fact, studies show that moist wounds heal 50 % faster than dry wounds.
Small cuts and scrapes can be left uncovered, but moisture is usually needed to help speed up the healing process. Apply petroleum jelly (Vaseline) and cover with an adhesive bandage any exposed wounds that might become dirty on the hands, feet, arms or legs.
A handful of studies have found that when wounds are kept moist and covered, blood vessels regenerate faster and the number of cells that cause inflammation drop more rapidly than they do in wounds allowed to air out. It is best to keep a wound moist and covered for at least five days.
It shows signs of infection
Whether it's a surgical wound or one that seemed minor at first but is getting worse instead of better, any wound that's infected should be evaluated by a medical provider. Signs a wound may be infected include: Increasing pain or redness. Drainage or bleeding that won't stop.
A skin wound that doesn't heal, heals slowly or heals but tends to recur is known as a chronic wound. Some of the many causes of chronic (ongoing) skin wounds can include trauma, burns, skin cancers, infection or underlying medical conditions such as diabetes.