Peristomal skin breakdown: Mechanical breakdown (from adhesives, cleaning agents), exposure to effluent fluids (eg, from poorly fitting appliances), or allergic reaction to pouch Parastomal hernia formation: Especially common among colostomies.5,6 Risk factors include obesity, poor abdominal muscle tone, and chronic cough Peristomal infection, abscess or fistula formation: Relatively uncommon in early dpostoperative perio. Reported incidence of these complications is 2% to 14.8%7 Stomal stenosis: Narrowing of the stoma, which might need surgical revision Stomal necrosis: Occurs perioperatively as a result of venous congestion or arterial insufficiency from a tight fascial opening. The incidence of early stomal necrosis is reported to range from 2.3% to 17%
Trang 1An Overview of Ostomies and the High-Output Ostomy
Article in Hospital Medicine Clinics · October 2013
DOI: 10.1016/j.ehmc.2013.06.001
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Available from: Bilal Gondal Retrieved on: 20 September 2016
Trang 2A n O v e r v i e w o f O s t o m i e s a n d t h e
H i g h - O u t p u t O s t o m y
Bilal Gondal,MD, MRCSI, Meghna C Trivedi, MD*
HOSPITAL MEDICINE CLINICS CHECKLIST
1 A high-output stoma (HOS) is defined as greater than 2 L of output from the stoma in a 24-hour period
2 Jejunostomy is a HOS Jejunum ranges in length from 200 to 300 cm, and greater than 90% of nutrient absorption occurs in first 100 to 150 cm of the intestines
3 Clinical assessment of a patient with HOS focuses on identifying and correcting fluid and electrolyte disturbances, and optimizing nutritional status
4 It is a common mistake to encourage patients with a HOS to drink large amounts of hypotonic fluids Use Oral Rehydration Solution or other “isotonic” solutions for fluid replacement
5 Greater than 50 cm of functioning bowel is required for absorption of an oral proton-pump inhibitor
6 Dietary modifications play an important role in decreasing the stomal output
7 Correction of sodium and water depletion, oral or intravenous supplementation
of magnesium, and vitamin D analogue have been used to correct hypomagne-semia, which is a problematic complication of HOS
8 A multidisciplinary team approach is vital to enhance the quality of life of patients with an ostomy
DEFINITIONS
1 What is a stoma and what are the different types of stomas?
An ostomy is a surgically made opening from the inside of an organ to the outside.1
Stomas may be temporary or permanent Temporary stomas are usually reversed at
Department of Medicine, UMass Memorial Medical Center, 119 Belmont Street, Worcester, MA
01605, USA
* Corresponding author.
E-mail address: Meghna.Trivedi@umassmemorial.org
KEYWORDS
Stoma output Ileostomy Colostomy Management of stomas Nutrition support
High-output stoma
Hosp Med Clin 2 (2013) e542–e551
http://dx.doi.org/10.1016/j.ehmc.2013.06.001
2211-5943/13/$ – see front matter Ó 2013 Elsevier Inc All rights reserved.
Trang 3a later date, allowing the blind loop of intestine to be used once again and, more
impor-tantly, eliminating the need for an ostomy, allowing the patient to defecate normally
Types:
Gastrostomy and jejunostomy: openings between the abdominal wall and
stom-ach or jejunum, respectively These openings are used predominantly for enteral
feeding tubes
Ileostomy: opening from the small intestine to the abdominal wall so that feces
bypass the large intestine and the anal canal
Colostomy: opening from the large intestine to the abdominal wall so that feces
bypass the anal canal
Urostomy: connection between the urinary tract and abdominal wall leading to a
“urinary conduit” so urine passes straight into a stoma bag and thus bypasses
the urethra
2 What is the typical ostomy output/stool output in different types of resections?
Jejunostomy: A jejunostomy is a high-output fecal stoma and can have up to
6 L/d of stomal output The jejunum is a major organ for nutrient absorption
(most fats, proteins, vitamins, and carbohydrates not already absorbed in the
stomach and duodenum).2It is important to emphasize to patients that they
should limit the oral intake of fluids or a vicious cycle may begin A jejunostomy
tube placed for feeding should be clamped when not in use, not left to drain
Ileostomy: Initially 1200 mL/d which then decreases to about 600 mL/d During
the early postoperative period and episodes of gastroenteritis, daily output can
be 1800 mL or even higher.3
Colostomy: 200 to 600 mL/d (Table 1)
3 What is a high-output stoma?
Normally in a healthy adult, about 4 L of intestinal secretions (0.5 L saliva, 2 L gastric
acid, and 1.5 L pancreaticobiliary secretions) are produced in response to food and
Table 1
Characteristics of different types of ostomies
Type of Ostomy Location Type of Discharge Patient Problems
Ileostomy Right lower
quadrant
Liquid or paste like Continuous drainage Contains digestive enzymes
Skin protection Odorous Dehydration Food blockage Ascending colostomy Middle or right
upper abdomen
Liquid or semisolid Contains digestive enzymes
Skin protection Odorous Dehydration Gas control Transverse colostomy Center of abdomen,
higher side
Semisolid Frequent drainage May contain digestive enzymes
Skin protection Odorous Gas control Descending colostomy
or sigmoid colostomy
Left lower quadrant Normal stool
Odorous
Skin protection Odorous Gas control Adapted from Hollister, Inc Types of ostomies Libertyville (IL): 1992.
Trang 4drink each day.4A high-output stoma (HOS) is defined as greater than 2 L (8 cups) of fluid from the ostomy in a 24-hour period
STOMA COMPLICATIONS
Peristomal skin breakdown: Mechanical breakdown (from adhesives, cleaning agents), exposure to effluent fluids (eg, from poorly fitting appliances), or allergic reaction to pouch
Parastomal hernia formation: Especially common among colostomies.5,6Risk factors include obesity, poor abdominal muscle tone, and chronic cough
Peristomal infection, abscess or fistula formation: Relatively uncommon in early postoperative period Reported incidence of these complications is 2% to 14.8%7
Stomal stenosis: Narrowing of the stoma, which might need surgical revision
Stomal necrosis: Occurs perioperatively as a result of venous congestion or arterial insufficiency from a tight fascial opening The incidence of early stomal necrosis is reported to range from 2.3% to 17%7
Retraction: Occurs commonly with obesity or weight gain after surgery
Stomal prolapse: Occurs with elevated intra-abdominal pressures, more com-mon in transverse loop colostomies and end colostomies
CAUSES OF HIGH-OUTPUT STOMA
Intra-abdominal sepsis
Surgery leaving less than 200 cm residual small bowel and no remaining colon
Obstruction in intestine at stoma site or proximal
Infection of the intestine (eg, Clostridium difficile) Methicillin-resistant Staphylo-coccus aureus enteritis is also reported to cause a high stoma output in the early
postoperative period after bowel surgery8
Active Crohn disease
Radiation enteritis
Withdrawal of medications, such as steroids or opiates
Administration of certain prokinetic medications (eg, metoclopramide, erythro-mycin, or laxatives) Metformin has also been shown to cause increased stomal output9
HISTORY AND EXAMINATION
1 What are the features of a healthy stoma?
The stoma is located above the skin level, and is red and moist (pallor can sug-gest anemia, whereas a dark hue may indicate ischemia) Immediately postoper-atively, it looks swollen The swelling subsides within 6 weeks Patients need to
be reassured that a red stoma is a healthy stoma The patient should not report pain or other discomfort associated with the intestinal stoma, as there are no somatic nerve endings in bowel
There is no separation between the mucocutaneous edge and the skin
There is no erythema, ulceration, rash, or inflammation in the surrounding skin
2 What are signs and symptoms seen in patients with HOS?
Patients with HOS present with watery stool and report emptying the stomal pouch/appliance more than 8 to 10 times per day The output may be difficult Gondal & Trivedi
e544
Trang 5to contain and may cause leakage Patients may complain of dry mouth,
increased thirst, fatigue, light-headedness, shortness of breath, muscle cramps,
or abdominal cramping It is important to evaluate these patients for signs of
dehydration and electrolyte disturbances Hyponatremia, hypokalemia, and
hy-pomagnesemia are commonly noted in these patients.10Dehydration can lead
to renal failure
HOS puts patients at risk of malnutrition Patients complain of feeling fatigued or
dizzy; they may have unintentional weight loss, impaired wound healing (due to
protein-energy malnutrition and inadequate micronutrients), and easy bruisability
(due to vitamin deficiency or malabsorption)
3 What are the psychological effects of having a stoma?
Anxiety and depression are commonly seen; ostomies may contribute to perceived
reduced quality of life It is crucial to prepare patients undergoing stoma formation
with educational materials and one-on-one counseling with a mental health specialist
Introducing patients to other patients who already live with an ostomy may also be
valuable The first few weeks post stoma are the most vital Patients frequently have
difficulty managing their stoma while performing daily activities (eg, shopping), and
changing bags without necessary facilities Patients may experience a change in
body image, and intimate relationships may suffer.11,12
“Phantom rectum” may occur during the first weeks after a colostomy or ileostomy,
whereby patients may experience sudden urges to defecate In this case the patient
may require reassurance and support, as this can be very distressing
MANAGEMENT
1 Which adults with HOS should be hospitalized?
Patients with moderate to severe dehydration and renal failure need hospitalization
These patients are kept NPO (nothing by mouth) and are hydrated with 0.9% saline
(2–4 L/d) After 2 to 3 days of intravenous hydration, food and restricted fluids up to
500 mL are introduced while slowly weaning intravenous fluids.13 Strict input and
output should be recorded Urine output should measure at least 800 mL/d with a
sodium concentration greater than 20 mmol/L
Weight should be followed daily Serum electrolytes and renal function should be
measured on a regular basis Electrolytes should be repleted appropriately It is
important to identify the cause of HOS and to treat the underlying cause as early as
possible
2 What are the goals of management?
The 4 important principles on which management of high-output stoma should be
based are as follows:
Correct dehydration and electrolyte imbalance
Reduce stoma output by pharmacologic and nonpharmacologic methods
Identify and treat the underlying cause of HOS
Act as quickly as possible to prevent complications
Patients should be linked with a nutrition counselor who has experience in managing
these complex patients A multidisciplinary approach to management of HOS should
Trang 6be undertaken It should include the patient and his or her family, a nutritionist, the patient’s surgeon, and potentially other health care providers
3 What pharmacologic strategies can be used in patients with high-output stoma?
A conservative approach is used initially If it fails to improve the patient’s clinical condition, medications to decrease the amount of stool output are used The most commonly used medications are proton-pump inhibitors and antidiarrheal medications such as loperamide (Imodium) and diphenoxylate/atropine (Lomotil)
a Proton-pump inhibitors
Proton-pump inhibitors work by covalently binding to the H1K1-ATPase system
at the secretory surface of gastric parietal cells This action suppresses the final step in gastric acid production, and leads to inhibition of both basal and stimulated acid secretion
Gastric hypersecretion may occur in the first 2 weeks after bowel resection, but may also occur over a longer period of time.14 In the immediate postoperative period, it has been recommended to use a pantoprazole drip (80 mg bolus followed
by 8 mg/h).15Once oral intake is started, proton-pump inhibitors are used orally Omeprazole, 20 mg twice a day, may be used to reduce hypersecretion.16 It is important to bear in mind that greater than 50 cm of functioning jejunum is required for absorption of oral proton-pump inhibitors.17
b Loperamide (Imodium)
Loperamide slows transit time, resulting in decreased intestinal output Lopera-mide can be used in patients with HOS to reduce bowel movements to 1 to 3 times per day The patient should be advised to take 2–4 mg of loperamide 30 minutes before meals and at bedtime The patient should be advised not to exceed
8 mg/d (over-the-counter dose) and 16 mg/d (prescription dose).15
c Diphenoxylate-atropine (Lomotil)
If loperamide is not effective, codeine phosphate or diphenoxylate-atropine may
be used Diphenoxylate-atropine has a relaxation effect on intestinal smooth mus-cles and thereby reduces intestinal output by 20% to 30%.18–20 Diphenoxylate has central opiate effects and an increased risk of overdose It is chemically related
to some narcotics, and may be habit forming if taken in quantities larger than pre-scribed Atropine may cause anticholinergic side effects Diphenoxylate-atropine
is available as 4-mg tablets, and the recommended dose is 2 tablets 4 times per day.17If any tablets/capsules emerge unchanged in stool/stomal output, tablets/ capsules can be crushed, opened, and/or mixed with water or put on food Liquid formulations are also available
d Codeine phosphate and tincture of opium are used if loperamide and diphenoxylate-atropine are not effective
e Somatostatin/octreotide
Octreotide is a synthetic analogue of hormone somatostatin
Octreotide decreases intestinal output by 3 mechanisms:
It inhibits the release of gastrointestinal hormones, namely gastrin, cholecysto-kinin, secretin, motilin, and other hormones This inhibition decreases the secre-tion of water, bicarbonate, and pancreatic enzymes into the intestine, thus decreasing the intestinal volume.21
Octreotide relaxes the intestinal smooth muscles, thereby allowing for an increased intestinal capacity
It increases intestinal water and electrolyte absorption.22
Gondal & Trivedi
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Trang 7Octreotide is dosed 50 to 250 mg subcutaneously 3 to 4 times per day It may be
needed if there is insufficient length of remaining jejunum (<50 cm) to absorb a
proton-pump inhibitor in patients with jejunostomy
SMS 201-995 is a very potent analogue of somatostatin that has been shown to
decrease proximal ileostomy output.23
f Clonidine
Clonidine has been shown to reduce intestinal output in patients with HOS or
short bowel syndrome with high output refractory to treatment with antidiarrheals
and antisecretory agents Clonidine has been shown to significantly reduce output,
thus limiting the need for parenteral nutrition and intravenous fluids The
recom-mended dose is 0.1 to 0.3 mg up to 3 times per day.24
g Steroids/fludrocortisone:
Oral fludricortisone, high-dose hydrocortisone, or intravenous aldosterone each
has been shown to occasionally reduce stomal output in patients with functioning
ileum Fludricortisone increases ileal sodium absorption.25,26
4 What nonpharmacologic strategies should be used in patients when they initially
experience increasing volume output of their stoma?
The patient should be instructed to avoid drinking hypotonic fluids and
bever-ages such as tea, coffee, alcohol, and fruit juices, and avoid foods containing
high amounts of sugar
Oral input and stomal output should be monitored closely Adequate urine output
(0.5 mL/kg/h) should be maintained
Oral Rehydration Solution (ORS) is recommended to prevent dehydration The
World Health Organization recommended ORS consists of 3.5 g sodium chloride,
2.5 g sodium bicarbonate, 1.5 g potassium chloride, and 20 g of mixture in 1 L of
potable water This drink can be easily prepared by mixing 8 teaspoons of sugar,
1 teaspoon of salt, and 1 cup of orange juice in 1 L of drinking water Patients are
encouraged to sip at least 1 L of this solution at frequent intervals
Alternative such as Pedialyte, Rehydralyte, and Ceralyte are good hydration
solutions for patients with a HOS
Gatorade G2 with one-eighth teaspoon of salt added to every 8 ounces of the
drink is another good alternative to ORS
Patients should eat small meals every 2 to 3 hours or 6 to 8 times a day for better
digestion and absorption, and include foods that may help thicken stools The list
of foods is provided in the next section
Starch and protein-rich food slow the transit time, thus providing the body more
time for digestion
Reducing lactose in the diet helps to decrease bloating and diarrhea
Salt should be used liberally
High-fiber food and food with skins and roughage that may increase output
should be avoided
5 Which foods decrease the amount of diarrhea/ostomy output?
In general, complex carbohydrates should be consumed, as they slow down the
transit time through the intestine and provide bulk to the stool Foods that are rich
in complex carbohydrates are pasta (white), bread (white), grains, rice (white),
potatoes, fruits (apples, bananas), and vegetables without skin
Foods such as tapioca pudding, creamy peanut butter, almond butter, potatoes
(without skin), oatmeal, and apple sauce help thicken foods and limit the stomal
output
Trang 86 Which foods increase the amount of diarrhea/ostomy output?
Simple carbohydrates such as honey, sugar, corn syrup, soda, chocolates, jams, jellies, and so forth increase the amount of water in intestines secondary to osmotic effect, and increase the amount of ostomy output
Sugar-free products containing sorbitol, mannitol, or xylitol should be avoided,
as they can worsen diarrhea
Beverages containing caffeine, such as coffee, tea, cola, and alcohol, are stim-ulants that increase stool output
Juices, especially apple, grape, and prune juice, are high in sugar and cause diarrhea
Juices with pulp, dried fruits such as raisins and pineapple, frozen berries, and coconut should be avoided
Raw vegetables, corn, popcorn, potato skins, stir-fried vegetables, peas, beans, legumes, and salads should be avoided during the period of high ostomy output,
as they are high in fiber and increase the stool output (Table 2)
7 How should hypomagnesemia be managed?
Magnesium depletion is an important electrolyte derangement in patients with jejunos-tomy Sodium depletion causes secondary hyperaldosteronism, thereby affecting magnesium balance Patients may become symptomatic with a serum magnesium level of less than 0.6 mmol/L Patients may suffer from fatigue, muscle weakness, dizziness, nausea, vomiting, and muscle cramps
Water and sodium depletion should be corrected to correct hypomagnesemia Oral magnesium in the form of magnesium oxide is used as gelatin capsules of 4 mmol to a total of 12 to 24 mmol/d.13It does not appear to increase stomal output Magnesium oxide is usually taken at night when transit time is slowest and can be maximally absorbed
If oral magnesium oxide fails to increase magnesium to optimal levels, 1a-hydrox-ycholecalciferol in increasing doses can be used Oral 1a-hydrox1a-hydrox-ycholecalciferol
Table 2
Dietary recommendations for patients with ostomy
Eat meals in small amounts frequently, every
2 or 3 h or 6–8 times a day
Prevents bloating Helps digestion and absorption Helps meet nutritional needs Include foods in diet that thickens stool Helps decrease stool output
Include starchy foods like white rice, white
pasta, bread, cereal, and potatoes
Include protein foods including fish, meat,
eggs, cheese, and peanut butter
These foods slow the movement of food through intestines, giving the body more time for digestion
Include salty snacks like crackers, chips,
pretzels
Helps absorb fluids better Reduce lactose in diet Reduces bloating and diarrhea
Avoid high-fiber diet like whole grains and
food with membranes
Reduces bloating and diarrhea, helps decrease stool output
Avoid foods high in sugar like jams, jellies,
honey, white and brown sugar, molasses
Reduces diarrhea/stool output Gondal & Trivedi
e548
Trang 9increases intestinal and renal absorption of magnesium The dose of 0.25 to 9 mg daily
is gradually increased (every 2–4 weeks in 0.25-mg increments) while ensuring that
hypercalcemia does not occur.27Magnesium can also be administered in intravenous
infusions with saline
PERFORMANCE IMPROVEMENT
There is no specific performance improvement measure related to management of
HOS However, several practices may be associated with improved outcomes:
A multidisciplinary approach to the management of patients with stoma is very
important in enhancing the patient’s quality of life This multidisciplinary team
includes the colorectal surgeon, wound ostomy continence nurse, nutritionist,
patient, and family members involved in the care of the patient
Use of ORS instead of hypotonic fluids when the patient becomes dehydrated
Early intervention or hospitalization when the patient develops high output and
signs/symptoms of dehydration
Concurrent attention to the psychological needs of the patient with an ostomy
The United Ostomy Association of America (UOAA) is a national organization that
provides support, information, and advocacy to patients with ostomy and their
care-givers The UOAA is a member of the International Ostomy Association The UOAA
Web site is a useful online resource for patients with ostomy, with discussion boards,
support groups, and general information for patients
CLINICAL GUIDELINES
Nightingale J, Woodward JM Guidelines for the management of patients with a short
bowel; on behalf of the Small Bowel and Nutrition Committee of the British Society of
Gastroenterology Published in Gut Available athttp://dx.doi.org/10.1136/gut.2006
091108
FUTURE DIRECTIONS
Four randomized placebo-controlled trials have been performed using growth
hor-mone to stimulate mucosal growth for better absorption of nutrients.28–30In 3 studies
there was no significant increase in nutrient absorption, but 1 did show a small
improvement in nutrient absorption.31
GLP-2 has been shown to cause villus growth Plasma levels of GLP-2 are low in
patients with jejunostomy.32GLP-2 is given as subcutaneous injections, and a small
increase in nutrient absorption has been shown.33
Intestinal transplantations are possible in patients with “intestinal failure,” and more
than 1200 such surgeries have been performed worldwide Intestinal transplant has
not yet been recommended as an alternative therapy for patients with intestinal failure
who have been safely maintained on long-term intravenous nutrition, which is partly
due to the excellent outcomes reported for long-term parenteral nutrition and the
com-plications and challenges posed by intestinal transplant.34
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22 Sancho JJ, di Costanzo J, Nubiola P, et al Randomized double-blind placebo-controlled trial of early octreotide in patients with postoperative enterocutaneous fistula Br J Surg 1995;82(5):638–41
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