How does changing dressings for a bleeding cancerous wound differ from changing dressings for a regular wound ?

Cancerous wounds are open wounds formed after malignant tumors infiltrate the skin. The tissue structure and vascular condition of these wounds are completely different from ordinary traumatic or surgical wounds. Tumor-induced angiogenesis is disordered, the vessel walls are fragile, and they lack the support of normal smooth muscle and connective tissue. Even slight touch, dressing friction, or a slightly stronger flow of irrigation water can trigger massive bleeding. The tumor tissue itself also releases procoagulant and anticoagulant substances, causing local coagulation dysfunction and making the wound less able to stop spontaneously after bleeding. Therefore, dressing changes for cancerous wounds cannot simply follow the routine procedures for cleaning and debridement of ordinary wounds. Preventing bleeding must be the primary focus in the design of the dressing change process, and the potential for bleeding to occur must be assessed beforehand for every action. 

What preparations should be made before changing dressings to reduce the risk of bleeding?

Adequate preparation is essential to minimizing bleeding during dressing changes. Before changing the dressing, assess the wound's bleeding history and current condition. If significant bleeding occurred during the last dressing change, or if numerous tortuous and engorged blood vessels are visible on the wound surface, it is considered a high-risk wound, requiring more conservative handling. Prepare all necessary dressings and instruments before starting the procedure to avoid repeated contact with the wound while searching for items. Prepare multiple pieces of gauze soaked in saline solution and dry gauze, as well as local hemostatic materials such as calcium alginate dressings, absorbable gelatin sponges, or adrenaline-soaked gauze, for immediate use in case of bleeding. Choose a time when the patient's pain is well controlled for the dressing change. Pain and tension can raise blood pressure, increasing the tendency to bleed; if necessary, administer analgesics before the dressing change as prescribed. Maintain a quiet and warm operating environment. Cold stimulation can cause vasoconstriction but may also cause shivering and muscle tension in the patient, which is detrimental to bleeding control; the room temperature should be kept within a suitable range. 

How should you rinse a cancerous wound to prevent bleeding?

The primary principle of cleaning cancerous wounds is low-pressure, gentle flow. Avoid using pulsating irrigation or high-pressure syringes, as the force of the water flow may directly puncture the fragile blood vessels on the tumor surface. Use warm saline solution to rinse the wound at a near-natural drip rate using a syringe or irrigation bulb, or gently apply saline-soaked gauze to the wound to remove surface secretions and old dressing residue. Never scrub cancerous wounds, as friction and shearing forces are the most common factors that induce tumor vessel rupture and bleeding. Do not forcefully peel off old dressings adhering to the wound surface. First, thoroughly moisten the contact surface between the dressing and the wound with saline solution, wait one or two minutes to loosen the dressing, and then slowly peel it off parallel to the wound surface. If necrotic tumor tissue that has sloughed off is not firmly attached to the wound, it can be gently removed with tweezers. However, do not forcibly clean tissue that is resistant or adhered; any remaining necrotic material can be left for the next dressing change or gradually softened with an autolytic debridement dressing.

What methods can be used to stop bleeding if it occurs during dressing changes?

When bleeding occurs during dressing changes for cancerous wounds, the operator needs to remain calm and treat the bleeding in layers according to its severity. For minor oozing, which manifests as slow, localized oozing of bloody fluid, apply dry gauze directly and gently to the bleeding point. The pressure should be enough to stop the bleeding without excessively compressing the tumor tissue. Continue applying pressure for five to ten minutes, then slowly remove the gauze and observe. Most minor oozing will stop on its own. If pressure is ineffective or the bleeding is moderate, apply a calcium alginate dressing to the bleeding area. The calcium alginate fibers release calcium ions upon contact with the blood, activating the coagulation process. Simultaneously, the fibers expand to form a gel that seals the bleeding point. Secure the dressing with dry gauze under pressure. If the bleeding is spurting or a continuous, large flow, it is an emergency. Immediately apply continuous pressure with thick gauze while calling for emergency medical assistance. Do not attempt to clean the wound or ligate blood vessels at home. Adrenaline-impregnated gauze is used for local hemostasis in some medical facilities, but it should only be used after a doctor's evaluation and is not suitable for patients with cardiovascular disease. Topical hemostatic materials should not be forcibly removed within 24 to 48 hours after application. Allow the hemostatic material to fall off or dissolve naturally on the wound surface. Forcibly removing it may cause bleeding again.

How should dressings be selected and secured after bleeding is controlled?

For cancerous wounds in the bleeding phase, dressing selection should prioritize non-adhesion and easy removal. Silicone foam dressings are a good choice, as the silicone side contacts the wound but does not adhere to granulation tissue or tumor tissue, and there is almost no mechanical traction on the wound during dressing changes. An inner layer of petroleum jelly or paraffin gauze can be used as an anti-adhesion layer, and the outer layer can be secured with breathable tape or non-woven tape. The tape should be applied in a direction that avoids excessive tearing force on the skin around the wound. Whether a blood-soaked dressing needs to be changed immediately or thickened depends on whether the bleeding has stopped. If the bleeding has stopped, the soaked dressing can be left in place, and a new absorbent pad can be placed on top to avoid frequent changes that could damage the newly formed blood clot. If bleeding continues to seep through the dressing, the blood-soaked dressing should be carefully removed under pressure and re-treated. When securing the dressing, the tape should not be pulled taut, as taut tape creates a continuous pull on the skin, which may pull on the wound edges and cause new bleeding. For more information on Innomed® Alginate Dressing, refer to the Previous Articles. If you have customized needs, you are welcome to contact us; You Wholeheartedly. At long-term medical, we transform this data by innovating and developing products that make life easier for those who need loving care.

Editor: kiki Jia