What Are the Most Common Causes of Delayed Wound Healing?

Wounds can result from ruptured skin after a trauma or skin incisions after surgery. The wound does not fully heal within the prescribed time, and is medically referred to as delayed wound healing.

Delayed wound healing

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Wounds can result from ruptured skin after a trauma or skin incisions after surgery. The wound does not fully heal within the prescribed time, and is medically referred to as delayed wound healing.

Delayed wound healing refers to the removal of the head and face 4 to 5 days, the chest and abdomen 7 to 8 days, the lower back 10 to 12 days, and the limbs and joints 14 days. If the wound does not heal within the above time, This is medically referred to as delayed wound healing. ^[1]

Wounds (or incisions) can result from ruptured skin after trauma or skin incisions after surgery. In general, after an injury, patients often pay attention to how many stitches are stitched in their wounds, or how long the wounds will heal. In fact, the human body is a body that is constantly undergoing metabolism and has its own regulation mechanism. The healing time after skin damage will also follow this pattern. In clinical practice, the basic rules of suture removal after wound healing are roughly as follows: head and face suture removal 4 to 5 days, chest and abdomen 7 to 8 days suture removal, waist and back 10 to 12 days suture removal, and limb joint 14 days suture removal. If the patient's wound does not heal within this time, this is medically referred to as delayed wound healing. So why does the wound heal delayed? This is because:

1. Infection: It is one of the most common causes of delayed wound healing. Local inflammation is caused by bacteria or viruses, resulting in delayed wound healing, including external infections (severe trauma), internal infections (peritonitis caused by appendic suppuration infection, etc.) ).

2. Foreign body retention: It means that the patient's wound has not been cleaned up, or the doctor left gauze, thread, etc. in the patient's body during the operation, which caused the wound to delay healing.

3. Severe injury: When a patient is severely traumatized or undergoes major surgery, the blood vessels at the injured site will rupture, which will increase the difficulty of tissue repair, resulting in delayed wound healing.

4. Malnutrition: After trauma or surgery, it can destroy the body's metabolic balance and cause excessive consumption of protein and carbohydrates in the body, which affects the normal supply of nutrients needed for wound healing.

5. Diabetes: Diabetic patients have abnormal regulation of insulin secretion in the body, which affects the body's glucose metabolism, reduces the utilization of sugar, and affects the regeneration and repair function of the tissue, resulting in delayed healing of the wound.

6. Poor tissue alignment: The patient suffered severe trauma, resulting in unclear local anatomy, difficulty in suture, or loose skin at the incision of the patient after surgery, and the distance between the skin margins was relatively long, which prolonged the cell crawl time. This causes delayed wound healing.

7. Age factor: In older patients, due to the decline of organ function and slow metabolism, the ability to replace cells to grow is also reduced, resulting in delayed wound healing.

8. Skin defects: The growth of skin and other tissues depends on the crawling replacement of cells. If the tissue, especially the surface layer of the skin, is lost, the replacement "engagement" time of the epithelial cells will be prolonged, resulting in delayed wound healing.

9. Auto-sensitivity: Because the patient's own sensitivity is too high, he is allergic to the silk thread used for suture, causing local redness and swelling of the wound or accompanied by purulent secretions, which affects the speed of wound healing.

10. Fat liquefaction: This condition is more common in women or obese patients, but also in patients with abdominal injuries. When localized fat liquefaction occurs in the wound, yellow thin secretions may overflow from the patient's wound. Although not accompanied by inflammatory symptoms such as redness, swelling, heat, and pain, it will affect the normal healing of the wound.

11. Subcutaneous effusion: Excessive exudation of tissues around the wound, exudation of bloody fluid accumulating in the wound, resulting in delayed wound healing. ^[1]