Transanal Hemorrhoidal Dearterialization (THD): A Minimally Invasive Solution for Hemorrhoids

Understanding Transanal Hemorrhoidal Dearterialization (THD) Hemorrhoids are a common and often uncomfortable condition affecting many people in India and worldwide. While many cases are mild and can be managed with lifestyle changes and home remedies, some individuals experience severe symptoms that require medical intervention. Transanal Hemorrhoidal Dearterialization, commonly known as THD, is a modern, minimally invasive surgical procedure designed to treat internal hemorrhoids that cause significant discomfort and bleeding. This article delves into what THD is, how it works, its benefits, potential risks, and what patients can expect during recovery, providing a comprehensive guide for those considering this treatment option. What are Hemorrhoids? Before understanding THD, it's crucial to know what hemorrhoids are. Hemorrhoids are swollen veins in the lower rectum and anus, similar to varicose veins. They can be internal (inside the rectum) or external (under the skin around the anus). Symptoms can range from itching and irritation to pain and bleeding, especially during bowel movements. Factors contributing to hemorrhoids include straining during bowel movements, chronic constipation or diarrhoea, pregnancy, obesity, and prolonged sitting. Why Consider THD? For mild hemorrhoids, lifestyle adjustments like increasing fibre intake, staying hydrated, and avoiding prolonged sitting or straining are often sufficient. Over-the-counter creams and ointments can also provide temporary relief. However, when these conservative measures fail, and symptoms persist or worsen, medical treatments become necessary. Traditional surgery for hemorrhoids, known as hemorrhoidectomy, involves cutting out the swollen tissue. While effective, it can be painful and involve a longer recovery period. THD offers a less invasive alternative, aiming to reduce blood flow to the hemorrhoids without excising tissue, thereby minimizing pain and speeding up recovery. How Does THD Work? THD is a specialized procedure that targets the blood vessels supplying the hemorrhoids. Here’s a step-by-step overview: Preparation: Before the procedure, you will likely receive sedation and local anesthesia to ensure comfort and relaxation. Sedation helps you stay calm, while local anesthesia numbs the surgical area. Insertion of Anoscope: The surgeon inserts a special instrument called an anoscope into the anus. This anoscope is equipped with an ultrasound Doppler probe. Locating Arteries: The ultrasound probe emits sound waves to precisely locate the superior rectal arteries that are supplying blood to the hemorrhoidal tissue. Ligation (Tying Off): Once the specific arteries are identified, the surgeon uses a specialized tool attached to the anoscope to suture, or tie off, these arteries. This action effectively reduces the blood flow to the hemorrhoids. Mucopexy (Optional): In some cases, particularly with prolapsed hemorrhoids (where they bulge outside the anus), the surgeon may also perform a mucopexy. This involves stitching the hemorrhoidal tissue back up to its normal position in the anal canal, helping to prevent recurrence. The entire THD procedure is typically completed in less than 30 minutes. Benefits of THD THD offers several advantages over traditional hemorrhoid surgery: Minimally Invasive: It does not involve cutting the anal tissue, which is a major source of pain in traditional surgery. Reduced Pain: Patients generally experience less post-operative pain compared to hemorrhoidectomy. Quicker Recovery: The recovery time is significantly shorter. Most patients can leave the hospital within 24 hours of the procedure. Lower Complication Rate: THD is associated with a lower risk of complications such as infection or anal strictures (narrowing of the anus). Effective Treatment: Studies have shown THD to be highly effective in treating symptomatic internal hemorrhoids, with a high satisfaction rate among patients. Potential Complications and Side Effects While THD is generally considered safe, like any surgical procedure, it carries some risks. Potential complications, though rare, can include: Persistent Urge to Defecate: Some patients may experience a feeling of needing to have a bowel movement even when the bowel is empty. This is often temporary. Bleeding: Minor bleeding can occur, but significant bleeding is uncommon. Anal Fissures: Small tears in the lining of the anus. Perianal Fistula: An abnormal tunnel forming between the anus and the skin near it. Perianal Abscess: A collection of pus near the anus. In a 2020 study from Brazil involving over 700 patients who underwent a specific type of THD (THM with mucopexy), the overall complication rate was reported at 1.1%. The most common issue noted was the persistent urge to defecate. What to Expect During Recovery Recovery after THD is generally smooth and much faster than traditional surgery. Here’s what you can typically expect: Hospital Stay: You can usually go home the same day or within 24 hours after the procedure. Your surgeon might advise you to stay until you have your first bowel movement to ensure there are no immediate complications. Pain Management: Post-operative pain is usually manageable with over-the-counter pain relievers. Bowel Movements: You might be advised to take laxatives if you don’t have a bowel movement within 48 hours to prevent straining. Activity Restrictions: It is advisable to avoid strenuous physical activity and heavy exercise for about 2 to 3 weeks to allow the area to heal properly. Diet: Maintaining a high-fibre diet and staying well-hydrated is crucial to ensure soft, regular bowel movements and prevent constipation. Cost of THD The cost of medical procedures can vary significantly based on location, hospital, and whether you have insurance. In some regions, the cost of procedures to treat internal hemorrhoids using heat can be relatively low without insurance. However, additional costs for anesthesia and hospital fees can add up. It is advisable to discuss the estimated costs with your healthcare provider and

In summary, timely diagnosis, evidence-based treatment, and prevention-focused care improve long-term health outcomes.