When the wound is very large, it is difficult to see the wound. Even if you can see the wound, it may be difficult to determine whether there is an obstruction in the tubule. Students like visiting topcvwritersuk.com/resumesplanet-review/ website for help in essay. If the patient's condition is poor and there is a high risk of necrosis, you should not use this method. If there are signs of severe inflammation, such as swelling or redness of the skin, it is necessary to use this method with caution.