What is Hernia & Types of Hernia Surgery
A hernia occurs in the abdomen when abdominal contents, such as part of the intestine or other organs, protrude through a defect or weakness in the abdominal wall muscle. This can happen due to increased intra-abdominal pressure that pushes the contents outward or weakened abdominal wall muscles, which may be caused by factors such as pregnancy, obesity, after surgery or genetic predisposition.
You may notice a lump in the abdomen or a fullness in the groin or scrotum if the hernia extends indirectly into the scrotum. The commonest type of hernia is a groin hernia which is seen as a swelling in the groin with or without discomfort. A hernia can also happen within the abdomen or chest and may not be visible outside as an obvious swelling but may just cause symptoms.
The only definitive cure for a hernia is surgery to reduce the hernia and repair the hole/defect by sutures or by the placement of a mesh.
Hernia surgeries fall into two types, with the choice depending on the individual case:
- Open Procedure: This involves a 7 cm skin incision directly over the hernia site in the abdomen to address (reduce the content back into the abdomen) the hernia content and reinforce the abdominal wall muscles with mesh or sutures depending on the size, type, and nature of hernia. Open surgery is performed in patients who may not tolerate a general anesthesia or in whom there is a hernia recurrence after keyhole surgery.
- Laparoscopic Procedure: A narrow port with a camera is inserted through keyhole incision to visualize the interior of the abdomen and repair the necessary components with 2 other ports. This method offers the advantage of smaller skin incisions and faster recovery.
Why is the Hernia Surgery done?
Hernia surgery mainly aims to achieve three goals regarding addressing the hernia problem:
- Repair and Support: The primary purpose of hernia surgery is to repair the defect in the abdominal wall that allows an organ (often a loop of intestine) to protrude through. Surgery aims to close this opening, reinforcing the weakened area and preventing further herniation. The same applies to hernias inside the abdomen such as a hiatal hernia or internal hernias.
- Reduce Complications: By repairing the hernia, surgeons help reduce the risk of potential complications. Untreated hernias can lead to complications such as bowel obstruction or strangulation (a surgical emergency includes the death of herniated tissue due to compromised blood supply).
- Assess Hernia Content: During surgery, doctors carefully assess the hernia content. This assessment is crucial because the herniated tissue may lose its blood supply when pushed into a new space. If the blood flow is compromised, it can lead to tissue damage. Surgeons evaluate the viability of the hernia contents and decide on the best course of action.