痔瘡切除術 (Hemorrhoidectomy)
Introduction
A hemorrhoidectomy is a surgical procedure designed to remove severe, extensive, or prolapsed hemorrhoids. Hemorrhoids are swollen, inflamed blood vessels located in the lower rectum and anus. While many hemorrhoids can be managed with dietary changes, over-the-counter medications, or minimally invasive procedures like rubber band ligation, a hemorrhoidectomy is recommended when these treatments fail, or when hemorrhoids are exceptionally large, painful, or bleed heavily. This surgery provides a highly effective, long-term solution for patients suffering from the significant discomfort and disruption caused by advanced hemorrhoidal disease.
Surgical Procedure
A hemorrhoidectomy is typically performed in a hospital or surgery center under general anesthesia, spinal anesthesia, or local anesthesia with sedation.
During the procedure, the surgeon gently opens the anal canal to access the hemorrhoids. Using a scalpel, laser, or electrocautery device, the surgeon makes careful incisions around the swollen hemorrhoidal tissue. The engorged blood vessels are then tied off (ligated) to prevent bleeding, and the hemorrhoid is excised (removed).
Depending on the surgeon’s assessment and the specific case, the surgical wounds may be closed with dissolvable stitches (a “closed” hemorrhoidectomy) or left open to heal naturally over time (an “open” hemorrhoidectomy). Sometimes, a stapled hemorrhoidopexy is performed for internal hemorrhoids, which uses a circular stapling device to cut off the blood supply to the hemorrhoids and lift prolapsed tissue back into place, though this is technically different from a traditional excision.
Surgical Risks
As with any surgical intervention, a hemorrhoidectomy carries general risks such as adverse reactions to anesthesia, excessive bleeding during or after the procedure, and the potential for blood clots.
General Complications
Common complications specific to hemorrhoidectomies include:
– Significant post-operative pain, especially during the first few bowel movements.
– Temporary difficulty urinating (urinary retention) due to pelvic muscle spasms or swelling.
– Minor bleeding or spotting from the anus for a few weeks.
– Mild, temporary loss of bowel control (incontinence) for gas or liquid stool.
Rare but Serious Complications
Although rare, more severe complications can occur:
– Severe, persistent bleeding requiring medical intervention.
– Infection at the surgical site, potentially leading to an abscess.
– Anal stricture: Narrowing of the anal canal caused by scar tissue formation, making bowel movements difficult.
– Permanent fecal incontinence due to unintended damage to the anal sphincter muscles.
Pre-operative Preparation
– Fasting: Patients are instructed not to eat or drink for 8 to 12 hours before surgery.
– Bowel Preparation: You will likely need to use an enema or take a laxative to completely clear the lower bowel before the procedure.
– Medication Review: Inform your doctor about all medications, especially blood thinners like aspirin or warfarin, which may need to be paused.
– Arrange Transportation: Since anesthesia is used, you must have someone available to drive you home after the surgery.
Post-operative Care
Most hemorrhoidectomies are outpatient procedures, allowing you to go home the same day. The recovery period is known to be painful, and pain management is a top priority. Your doctor will prescribe pain relievers, and you may be advised to take over-the-counter anti-inflammatory drugs. A local anesthetic injected during surgery will provide relief for the first few hours.
Wound Care
– Sitz Baths: Soaking the anal area in warm water (a sitz bath) for 15 to 20 minutes several times a day, especially after bowel movements, is crucial for soothing pain and keeping the area clean.
– Keep the Area Dry: After a sitz bath or shower, gently pat the area dry; do not rub.
– Use soft, unscented toilet paper or medicated wipes instead of harsh, dry toilet paper.
– Ice packs can be applied to reduce swelling in the first 48 hours.
Diet
Dietary adjustments are critical to prevent constipation, as hard stools can tear the healing incisions.
– Adopt a high-fiber diet immediately, incorporating plenty of fruits, vegetables, beans, and whole grains.
– Drink plenty of water (at least 8-10 glasses a day) to keep stools soft.
– Your doctor will likely prescribe stool softeners or a mild laxative to ensure bowel movements pass easily without straining.
Post-discharge Notes
Full recovery typically takes 2 to 4 weeks.
– Avoid heavy lifting, straining, or vigorous exercise during this period.
– Do not sit for prolonged periods, especially on hard surfaces or the toilet. A donut cushion may provide comfort.
– Expect some pain and minor bleeding during bowel movements for the first couple of weeks.
– Contact your doctor immediately if you experience severe bleeding, a high fever, inability to urinate, or worsening pain that is not controlled by medication.
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