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Hernia – Causes, Treatment, and Prevention.

Overview

A hernia occurs when an organ pushes through an opening in the muscle or tissue that holds it in place. For example, the intestines may break through a weakened area in the abdominal wall. Hernias are most common in the abdomen, but they can also appear in the upper thigh, belly button, and groin areas. Most hernias aren’t immediately life-threatening, but they don’t go away on their own. Sometimes they can require surgery to prevent potentially dangerous complications.

Types of Hernia

There are many types of hernias. The most common types of hernia include:

Causes of Hernia

Hernias are caused by a combination of muscle weakness and strain. Depending on its cause, a hernia can develop quickly or over a long period of time.

Common causes of muscle weakness include:

Factors that strain your body and may cause a hernia, especially if your muscles are weak, include:

Risk factors of Hernia

The risk factors can be broken down by hernia type:

Incisional hernia risk factors

Because an incisional hernia is the result of surgery, the clearest risk factor is a recent surgical procedure on the abdomen.

People are most susceptible 3-6 months after the procedure, especially if:

These factors all put extra stress on tissue as it heals.

Inguinal hernia risk factors

Those with a higher risk of inguinal hernia include:

Umbilical hernia risk factors

Umbilical hernias are most common in babies with low birth weight and premature babies.

In adults, the risk factors include:

Hiatal hernia risk factors

The risk of hiatal hernia is higher in people who:

Signs and Symptoms

External Hernia Symptoms

The most common hernias are external, although this category covers a few different types of hernia.

The location of each of these hernia types vary, and not all of them will cause the same symptoms. But the most common symptoms of an external hernia include the following:

Internal Hernia Symptoms

Unlike an external hernia, an internal hernia will not create a bulge on the outside of your body.

One of the most common types of internal hernia is a hiatal hernia, in which part of the stomach pushes up through the diaphragm, the sheet of muscle that separates your abdomen from your chest.

In many cases, a hiatal hernia doesn’t cause any symptoms.

But sometimes a hiatal hernia can cause digestive juices in the stomach to move up into the esophagus, known as acid reflux, or gastroesophageal reflux disorder (GERD).

Symptoms of GERD include these reactions:

Hiatal hernias don’t always cause GERD, and most cases of GERD aren’t caused by a hiatal hernia, so these symptoms, or a lack of them, can’t definitively let you know whether you have this condition.

A hiatal hernia can also cause chest pain, which may be a symptom of a heart attack. If you experience chest pain, it’s important to call or see a doctor right away.

There are several other relatively rare types of internal hernias, most of which involve areas of the digestive tract pushing through surrounding structures and tissues.

These hernias are often the result of abdominal surgery, especially certain kinds of gastric bypass operations. But they can also be the result of congenital (present since birth) openings or weaknesses in internal abdominal structures, the most common of which is known as a paraduodenal hernia.

Complications

Other than umbilical hernias in babies, hernias will not disappear on their own. Over time, a hernia can grow larger and more painful or can develop complications.

Complications of an untreated inguinal or femoral hernia may include:

Diagnosis and Test

Hiatus hernia is most commonly diagnosed when doctors do an endoscopy to investigate reflux, or when a barium X-ray has been performed. The hiatus hernia can show up as a bulge that is positioned between the oesophagus and your stomach. Large hiatus hernias can be observed on plain chest X-rays.

Herniagram

This is a special x-ray (not often done now, partly because it is ‘invasive’) that involves an injection with a needle. A liquid that shows on x-rays (radio-opaque) has to be injected into the abdominal cavity. If there is a hernia (hole in the abdominal wall) the liquid trickles through the hole and can be seen on the x-ray. It’s sometimes helpful if there is a question about whether a previously repaired hernia has returned

Barium X-ray

A barium swallow test or barium meal is a test in which you will be asked to drink a chalky liquid containing barium that helps your internal organs show up more clearly on X-ray pictures. The barium will outline your gullet, stomach and upper part of your small intestine. This test may help your doctor see whether you have a hiatus hernia.

Endoscopy or gastroscopy

Another way your doctor may check for a hiatus hernia is by referring you for a gastroscopy, which is an endoscopic examination. This is where you are given a light sedative and a doctor will insert a thin flexible lighted tube (an endoscope) down into your esophagus (gullet).

The tube allows the doctor to ‘look’ at your esophagus and check for abnormalities. This common procedure is usually painless and is generally performed in day surgery centers in public or private hospitals.

Ultrasound

Similar to the ultrasound exam used for pregnant women. Ultrasound gives a shadowy black and white picture. The result is operator dependent, meaning it depends on who is doing it.

Treatment and Medication

Hernias usually do not get better on their own, and surgery may be the only way to repair them. However, your doctor will recommend the best therapy to address your hernia and may refer you to a surgeon. If the surgeon thinks it is necessary to repair your hernia, then the surgeon will tailor the method of repair that best meets your needs.

In the case of an umbilical hernia in a child, surgery may be recommended if the hernia is large or if it has not healed by the age of 4–5 years old. By this age, a child can usually avoid surgical complications.

If an adult has an umbilical hernia, surgery is usually recommended because the condition will not likely improve on its own and the risk of complications is higher.

One of three types of hernia surgery can be performed:

Open surgery, in which a cut is made into the body at the location of the hernia. The protruding tissue is set back in place and the weakened muscle wall is stitched back together. Sometimes a type of mesh is implanted in the area to provide extra support.

Laparoscopic surgery involves the same type of repairs. However, instead of a cut to the outside of the abdomen or groin, tiny incisions are made to allow for the insertion of surgical tools to complete the procedure.

Robotic hernia repair, like laparoscopic surgery, uses a laparoscope and is performed with small incisions. With robotic surgery, the surgeon is seated at a console in the operating room and handles the surgical instruments from the console. While robotic surgery can be used for some smaller hernias or weak areas, it can now also be used to reconstruct the abdominal wall.

Postoperative Care after Hernia Repair

After hernia repair surgery, the patient is taken to the postanesthesia care unit (PACU). Patients are closely monitored by the nursing staff and remain there until they are stable. The amount of time spent in the PACU depends on the patient’s progress and on the type of anesthesia they received. Patients given general anesthesia must be awake and coherent before they leave the PACU.

Ice chips are offered to the patient in the PACU, and if those are tolerated, water is given. The intravenous line remains in place until clear liquids can be taken and tolerated. This may occur almost immediately following surgery, especially if a local anesthetic was used. Sometimes general anesthesia can induce nausea, which may delay taking oral fluids. Once clear liquids are tolerated, the diet progresses to solid foods.

Patients are transferred from the PACU to the outpatient or ambulatory unit, where recovery is completed. Inpatients return to their room. Most patients go home once they are up and walking around. Even though the anesthesia has worn off, most patients remain groggy for the rest of the day. Patients must make arrangements for a family member or friend to be with them upon discharge if they are going home the day of surgery.

Spinal anesthesia usually wears off within a few hours. In the first hour following surgery, patients usually lie flat on their back to decrease the chance of an anesthetic-induced headache, which can be painful and prolonged. A patient must regain full sensation in the region of their body that was numbed before being discharged.

Patients experience pain at the incision site, especially conventional procedure patients. Medication is prescribed and taken as directed. Swelling and discoloration usually develops around the incision and eventually disappears in the healing process. Some soreness can be expected during the first 24 to 48 hours.

The tiny incisions made during laparoscopic surgery are held together by steri-strips that fall off in about a week to 10 days. Patients can take a shower within two days after surgery. Regular sutures or staples usually hold together the large incision made in the open procedure. The wound must be kept dry until it begins to heal, so patients may have to take sponge baths for the first few postoperative days to avoid getting the wound wet.

Prevention

You can’t prevent the congenital defect that makes you susceptible to an inguinal hernia. You can, however, reduce strain on your abdominal muscles and tissues. For example:

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