Quickly Use Iodine for Wounds!? Doctor: A Common Misconception
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2014/05/30 14:24
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Health and Medical Network Reporter Zhang Yufan Reports May 30, 2014
According to statistics from the Ministry of Health and Welfare, approximately 1.53 million people sought medical treatment in 2012 due to open wounds and vascular injuries. Many patients had to change their dressings themselves after being discharged, but how exactly should they handle it? Doctors point out that many people hold numerous misconceptions about wound care procedures and the principles of protecting wounds. Among these, the most common is "using povidone-iodine for disinfection."
Chen Ganghua, Director of Plastic Surgery at Zhenxing Hospital, stated that wounds do not necessarily require povidone-iodine for disinfection. This is because disinfectants—whether hydrogen peroxide, povidone-iodine, or iodine tincture—can damage granulation tissue, reduce white blood cell activity, and impair skin cell regeneration, thereby harming the skin and delaying wound healing. Therefore, if povidone-iodine must be used, the correct wound care procedure involves first rinsing the wound with saline solution, then disinfecting it with povidone-iodine or hydrogen peroxide, followed by rinsing off the povidone-iodine or hydrogen peroxide with saline solution, and finally covering the wound with a dressing.
Why is this process so complicated? Chen Ganghua explained that both povidone-iodine and iodine tincture can easily cause pigmentation, leading to dark scars after the wound heals. Additionally, these products are often highly irritating, and many people experience allergic reactions after using them. Therefore, it is generally recommended to rinse the wound thoroughly with saline solution after using povidone-iodine, iodine tincture, or hydrogen peroxide before bandaging.
As for why "saline solution" should be used instead of plain water, Chen Ganghua said this is because saline is an isotonic solution, whereas water is a hypotonic solution. If water is used to rinse the wound, it can easily penetrate into the wound. Since human cells contain some salt, they will absorb water at this time, causing the cells to swell and burst. This is why washing a wound with water often results in a swollen and painful sensation.
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