Click here to download a PDF of this information.

Short Bowel SyndromeShort Bowel Syndrome

Curt bowel syndrome (SBS) occurs when the small intestine ceases to function properly due to trauma, affliction activity, or when too much of it has been removed. SBS results in inadequate nutrient and fluid absorption equally well every bit chronic and/or frequent diarrhea. It can lead to dehydration, malnutrition, fatigue, weight loss, and a variety of other health bug. Management might include farthermost dietary modifications, medications, and further surgeries.

Intestinal Anatomy

The upper part of the gastrointestinal (GI) tract consists of the esophagus, stomach, and duodenum. The lower GI tract consists of the small intestine (nigh 6 metres in length) and the large intestine or colon (two metres).

The upper 40% of the pocket-sized intestine is the jejunum, which comes from the Latin word for empty. The lower threescore% is the ileum, which, in Greek, means to roll or twist. These portions of the pocket-size intestine differ significantly in nature and function. The jejunum has a thicker wall and wider inside area (lumen) than the ileum. In addition, abdominal muscle contraction (peristalsis) is more forceful and rapid in the jejunum than in the ileum. Therefore, passage of material is normally faster through the upper section of the small intestine and slower as it goes farther along.

The principal part of the small intestine is to digest and absorb dietary nutrients, including proteins, carbohydrates, fats, vitamins, and minerals. The digestive tract works with back up from colonic bacteria and other organs (the liver and pancreas), to intermission down circuitous foods and to extract the nutrients. Water and salt are absorbed into the body via the large intestine.

Causes of Short Bowel Syndrome

The need for surgical resection tin occur for a number of reasons, including blocked or restricted blood menstruation to the bowel, a strangulated abdominal hernia, Crohn's illness, gastrointestinal cancer, radiation therapy, a perforated bowel, a twisting or tangling of the small-scale intestine (volvulus), congenital defects, and some other rare diseases. In infants and small children, the most common causes are built abdominal anomalies or a disease that causes bowel tissue death in premature babies (necrotizing enterocolitis).

The minor intestine is quite adaptive; in fact, even with removal of up to 40% of it, appropriate digestion is nevertheless possible. Notwithstanding, removing more than than this, or even removal of sure parts of the modest intestine can take agin consequences. For example, those who retain their duodenum, jejunum, and ileum are by and large able to avoid severe complications because of the adaptive nature of the modest intestine. Conversely, removing just 25% of the distal end of the small intestine that intersects with the large intestine (last ileum) can cause ongoing diarrhea and pregnant nutrient malabsorption.

Symptoms of Short Bowel Syndrome

The symptoms and severity of SBS vary according to the part of the intestine that is affected. For example, the duodenum absorbs fe, calcium, and magnesium. The jejunum absorbs fatty acids, amino acids, monosaccharides, and water-soluble vitamins. The ileum absorbs fat-soluble vitamins (A, D, Due east, G), vitamin B12, and bile acids. Therefore, loss of function in any one of these parts has its own implications as to what the body will end up having difficulty absorbing from the food an private consumes.

Symptoms of SBS typically include chronic diarrhea, fatigue, bloating, cramping, weight loss, aridity, and malnutrition. Many of the most devastating complications occur specifically because of this malnutrition.

Gastric acrid hypersecretion can occur in individuals with SBS, especially in the immediate aftermath of a surgical removal of part of the intestine (resection). Loftier levels of breadbasket acrid can enter the altered intestine and interfere with absorption of nutrients.

Vitamin and mineral deficiencies can cause many additional aggravating symptoms, including visual disturbances, dryness of the eyes, prickling or tingling feelings on the skin, muscle spasms, piece of cake bruising, blood clotting problems, and difficulty animate on exertion.

Electrolyte imbalances tin can outcome when the small intestine is unable to absorb minerals such every bit potassium, sodium, and magnesium fairly, resulting in weakness, nausea, headaches, and irregular heartbeats.

Acidosis is an abnormally high level of lactic acid in the bloodstream resulting from the shortened bowel's reduced power to digest carbohydrates. Undigested carbohydrates create lactic acid, which can build up due to a reduced ability to employ and effectively dispose of it. Acidosis can consequence in defoliation, blurry vision, and slurred speech.

Steatorrhea is dietary fat remaining in the feces after passing through the small intestine unabsorbed. In a normal small-scale intestine, bile salts, which are essential for fat assimilation, enter the alimentary canal from the gallbladder. These bind to fat, which together are absorbed at the concluding ileum. When this part is missing or damaged, then an excess amount of fat passes in the stool. Steatorrhea causes stool that floats, is grayness in colour, and is exceptionally foul smelling.

Kidney stones tin also result when unabsorbed fat in the colon binds with calcium, preventing the normal combination of calcium and oxalate, a compound found in plant foods. When the colon absorbs oxalate that is unbound to calcium, the body passes it in college than normal amounts in the urine, resulting in oxalate kidney stones.

Diagnosing Short Bowel Syndrome

While having l% or more of the small intestine removed is a strong indicator of SBS, physicians use these tools to brand a diagnosis: blood tests, physical exam, and stool examination. Blood tests can reveal vitamin, mineral, and electrolyte deficiencies. Physical exam tin assistance a physician observe loss of muscle mass, inability to maintain weight, and dermatological weather condition related to vitamin deficiency, such every bit rashes or scaly pare. Stool exam is useful for identifying whether an private is absorbing a healthy amount of fatty and carbohydrates.

Management of Curt Bowel Syndrome

At that place are a multifariousness of options for the management and handling of short bowel syndrome, covering the spectrum of nutrition, medication, and surgery.

Dietary Modifications

In the backwash of intestinal resection, patients initially require the commitment of fluids, electrolytes, and liquid nutrients into the bloodstream through a tube placed in the vein (intravenous, or Four), called total parenteral nutrition (TPN) or parenteral nutrition (PN). This phase may terminal from 3-four months. However, the major focus within 2-iv days later a surgical resection is on long-term abdominal adaptation. Depending on the extent of the resection, some individuals are able to resume a modified oral diet within a few weeks of surgery. Adaptation for others might take upwards to a year. Remarkably, during adaptation, the remaining intestinal villi will grow in length and thickness to recoup for the loss of intestine, thus increasing the remaining surface area for nutrient absorption.

Enteral and oral diet are two mechanisms that aid in abdominal adaptation. Enteral diet involves the delivery of a special liquid nutrient mixture to the stomach or pocket-size intestine through a feeding tube. This mechanism stimulates adaptation of the intestinal villi. Patients must have a partially operation GI tract for this to exist effective.

One time out of the adaptation phase and able to swallow orally, diet and eating habits might exist able to help prevent malnutrition and dehydration. Dietitians volition customize diet plans, which vary according to which parts of the remaining intestine are functioning.

General dietary guidelines include:

  • swallow small, more frequent meals (5-seven per day),
  • potable liquids between meals instead of with them,
  • eat high protein foods,
  • eat complex carbohydrates, such as pasta, rice, potatoes, breads, and cereals,
  • consume a low-fatty diet, especially for those experiencing steatorrhea or who are missing their terminal ileum,
  • limit alcohol and caffeinated beverages,
  • consider limiting foods that are high in oxalate (for those without an ileum, simply with retained colonic function),
  • consume foods that assistance command diarrhea, including bananas, oatmeal, rice, tapioca, applesauce, and yogurt.

While oral nutrition is preferred, some individuals might be unable to larn adequate nutrition through nutrition lone. In serious cases, fifty-fifty enteral nutrition might not work well and it could be necessary to use TPN long-term. However, this is complex therapy with risk of serious complications including primal line infections, bone disease, and liver affliction.

Medications

In add-on to nutrition, a physician might prescribe medications, whether prescription or over-the-counter, to relieve some symptoms and to address the underlying condition.

Anti-diarrheal medications boring down the fourth dimension it takes food to pass through the pocket-size intestine by decreasing the charge per unit of contraction and relaxation (peristalsis) of the abdominal muscles. Drugs in this category include diphenoxylate (Lomotil®) and loperamide (Imodium®). Codeine might besides be helpful.

Gastric acid reducers come in two primary types: histamine-2 receptor blockers (H2RAs) and proton pump inhibitors (PPIs), which can inhibit or reduce the release of stomach acid. Examples of H2RAs include cimetidine (Tagamet®), ranitidine (Zantac®), famotidine (Pepcid®), and nizatidine (Axid®). PPIs include omeprazole (Losec®), lansoprazole (Prevacid®), pantoprazole sodium (Pantoloc®), esomeprazole (Nexium®), rabeprazole (Pariet®), and pantoprazole magnesium (Tecta®), as well as dual delayed release PPI capsules in the form of dexlansoprazole (Dexilant®). Excessive acid passing from the stomach into the intestines can hinder intestinal adaptation and can cause pain and discomfort, especially right later on surgery.

Bile acrid sequestrant, cholestyramine (Olestyr®), reduces the incidence of bile-salt diarrhea past increasing the removal of bile acids from the body. As the torso loses bile acids, it replaces them by converting cholesterol from the blood to bile acids, which also causes blood cholesterol levels to decrease.

Glutamine is the most abundant amino acrid in the body and is involved in more metabolic processes than whatsoever other amino acid. Information technology helps promote gut integrity by interim every bit an energy source and preventing the passage of intestinal bacteria through the gut mucosa into other bodily tissues and organs (bacterial translocation). Bacterial translocation can lead to buildup of harmful leaner and their toxins (sepsis), typically through infection of a wound, and can be fatal. Glutamine acts as a major fuel source for the white blood cells of the immune arrangement. It improves nitrogen residue, thereby helping those with SBS avoid the occurrence of nutritional stress in which the body uses more poly peptide than information technology takes in. Glutamine might likewise reduce diarrhea because it aids in the reabsorption of sodium and water.

Y'all tin can notice oral glutamine in some health nutrient stores, pharmacies, and online. Products include NutreStore® and GlutaSolve®. Discuss with your doctor before using it for short bowel syndrome.

Teduglutide (Revestive®) was the kickoff medication approved by Health Canada to treat adults and children with SBS who need extra diet or fluids from parenteral feeding. Teduglutide is a glucagon-similar peptide (GLP-2), which helps the intestines blot nutrients and fluid. It works by regenerating cells in the intestinal lining, improving intestinal absorption of fluids and nutrients, promoting growth in the surface area of the small intestine lining, and possibly restoring gastric elimination and secretion. Patients can inject information technology just under the pare (subcutaneously) in one case a solar day in the breadbasket area, upper legs, or upper arms.

Surgery

Regrettably, surgery might still be necessary when other therapeutic options are not working. These focus on increasing the intestines' absorptive backdrop and are either non-transplant or transplant surgeries.

Non-transplant surgeries involve manipulating the intestine to lengthen it. In the Bianchi procedure, a surgeon cuts a portion of the bowel lengthwise into 2 pieces and joins them together end to end. This results in a narrower, but longer segment of the bowel. Surgeons typically reserve the serial transverse enteroplasty (Pace) procedure for children who have plenty small intestine remaining to lengthen and restore role. In the Footstep procedure, a surgeon makes a serial of cuts in the pocket-size intestine and staples it dorsum together in a 'zig-zag' design, resulting in a narrower, longer bowel. Because of the intestine'southward new shape, food takes more fourth dimension to move through the bowel, thus increasing its fourth dimension in contact with the bowel lining and the chances of nutrient assimilation.

In the case of small bowel transplantation, a surgeon removes the diseased small bowel and replaces it with a donor intestine. All the same, this procedure comes with potential complications, including organ rejection, infections, and the excess product of white blood cell lymphocytes that results in lymphoproliferative disease. To lessen the incidence of rejection, individuals are required to utilise immunosuppressive drugs. Nonetheless, surgical techniques and immunosuppressive drugs continue to better, increasing the chances of successful transplants.

Brusque Bowel Syndrome Outlook

For individuals with brusk bowel syndrome, especially those who have had a big function of their intestines surgically removed, the goal is to enhance abdominal accommodation, enhance nutrition, and eliminate the demand for full parenteral nutrition. The future of treatments for SBS revolves around improving ways to maximize bowel adaptation and refining techniques for abdominal transplantation. For now, though, a diversity of options exist for helping individuals manage symptoms.

A potent team for constructive management will mostly include gastroenterologists, surgeons, dietitians, nursing specialists, and pharmacists. Maintaining a strong relationship with these individuals is essential in order for those with SBS to find a treatment plan that is correct for them. While there is no single diet or cure for curt bowel syndrome, education and open communication with trusted medical professionals might help individuals avoid the harmful health consequences of malnutrition, dehydration, and chronic diarrhea associated with brusque bowel syndrome.

Want to learn more than about short bowel syndrome?

We have several related articles that may exist helpful:

  • Are You Getting Enough Zinc?
  • Compromised Bowel and Diet
  • Glutamine
  • Minerals: Nosotros are What we Absorb
  • Prebiotics: The Latest Food for Thought
  • Short Bowel Syndrome
  • Short Bowel Syndrome and Diet
  • Short Bowel Syndrome Video
Image Credit: © bigstockphoto.com/sevendeman