My Treatment Approach to the Management of Ulcerative Colitis
Transcription
My Treatment Approach to the Management of Ulcerative Colitis
DIAGNOSIS AND TREATMENT GUIDELINES My Treatment Approach My Treatment Approach to the Management of Ulcerative Colitis Seymour Katz, MD, MACG Abstract Ulcerative colitis diagnosis and management represent a challenge for clinicians. The disguises of ischemia and acute infectious colitis continue to confound the diagnosis. The therapeutic options have remarkably expanded in the way of immunomodulators, biologics, or ileoanal pouch surgery, yet all carry potential considerable risks. These risks can confuse and impair patient acceptance, particularly elderly patients and men younger than 30 years. Predictors of outcome of medical and surgical therapy have improved but are far from complete. Nevertheless, therapies focused on the specific patient’s condition continue to offer hope. ª 2013 Mayo Foundation for Medical Education and Research T he diagnosis of ulcerative colitis (UC) may be elusive and is often cloaked by confusion with acute self-limited infectious colitis, ischemia, or drug effect. The management is daunting, considering no “one size fits all,” and even after medical failure, the surgical options open new areas of morbidity. The following approach is offered as a clinical guide to diagnosis and management. CHALLENGE THE DIAGNOSIS BEFORE EMBARKING ON THERAPY Is there sufficient evidence to substantiate the diagnosis? Obtain all prior imaging studies, seromarkers, and pathology slides for a second opinion by expert gastrointestinal radiologists and pathologists. Have the following conditions, often diagnosed as UC, and infections been ruled out: ischemia, Behçet disease, segmental colitis, celiac disease, microscopic colitis, drug (eg, nonsteroidal anti-inflammatory drugs)einduced colitis, diverticulitis (segmental colitis associated with diverticulitis), Clostridium difficile, Campylobacter, parasites (strongyloides) (particularly with travel in an endemic area), or cytomegalovirus (CMV)? Are there noneirritable bowel disease (IBD) factors that contribute to diarrhea that are misinterpreted as an IBD exacerbation (eg, bile acid diarrhea, small intestinal bacterial overgrowth, microscopic colitis, or sexually transmitted diseases, such as chlamydia, gonorrhea, syphilis, or AIDS mimicking proctitis)? If fecal calprotectin (FCP), C-reactive protein (CRP), and albumin levels are within n Mayo Clin Proc. 2013;88(8):841-853 normal limits, a noninflammatory source (eg, irritable bowel syndrome, sorbitol, or lactose intolerance) should be ruled out. GENERAL CONSIDERATIONS Vaccination At the first visit be sure that the patient’s vaccination schedule includes hepatitis A and B, pneumonia, influenza, and, if necessary, human papillomavirus (Gardasil; Merck & Co, Inc) and zoster (live attenuated vaccine). Live attenuated vaccines are contraindicated once immune suppression therapy commences. From the Department of Medicine, New York University School of Medicine, New York, NY; North Shore University HospitalLong Island Jewish Health System, Manhasset, NY; and St Francis Hospital, Roslyn, NY. Tobacco Current tobacco use is not associated with a risk of UC, but a history of former smoking is a risk that may persist for decades after cessation of smoking.1 Although it is a simple leap of faith to consider nicotine as beneficial in UC because smoking is “protective,” this has not been uniformly effective and has the added burden of increased extraintestinal manifestations.2 Pregnancy in Women With UC In the French Groupe d’Etude Thérapeutique des Affections Inflammatories du Tube Digestif (GETAID) study, infliximab use by pregnant women with IBD had no different outcomes than use by pregnant patients with IBD not taking biologics.3-5 However, the Pregnancy in Inflammatory Bowel Disease and Neonatal Outcomes (PIANO) registry of 896 IBD-complicated pregnancies noted patients with UC to Mayo Clin Proc. n August 2013;88(8):841-853 n http://dx.doi.org/10.1016/j.mayocp.2013.05.001 www.mayoclinicproceedings.org n ª 2013 Mayo Foundation for Medical Education and Research 841 MAYO CLINIC PROCEEDINGS have a 5 times greater spontaneous abortion rate, more preterm births, and lower birth weights than occurred with patients undergoing immunomodulator and/or biologic therapy.6 The concern for discontinuing infliximab therapy in the last trimester because of its accelerated transplacental movement persists. Nevertheless, the administration of the rotavirus live attenuated vaccine must still be delayed for at least 6 months before administering it to newborns of these mothers. Stress The recognized nexus between symptomatic flares of IBD and stress can be associated with markers of increased inflammation (eg, CRP), glucocorticosteroid resistance, and a reduced immune response.7 Whether cognitive and pharmacologic therapies directed at stress-related flares can alter the disease course remains to be explored.7,8 Adherence Nonadherence is a considerable disappointment in IBD therapy.9,10 The young college student, yuppie, or unmarried male is particularly at risk for a greater relapse rate. One approach to enhance adherence is a face-toface patient-physician session at least 3 times yearly even when the disease is quiescent. Bone Health Serum vitamin D levels should be measured. A dual-energy x-ray absorptiometry scan is indicated if glucocorticosteroids are given for more than 3 months. Calcium and vitamin D supplements will not be sufficient but may play a role in reducing UC risk in women.11 Osteoporosis often requires bisphosphonates but not in young women anticipating pregnancy. MEDICAL THERAPY FOR THE IBD OUTPATIENT: OFFICE MANAGEMENT 5-Aminosalicylic Acid The 5-aminosalicylic acid formulations remain the standard of care for mild to moderate UC populations seen in a community practice. 5-Aminosalicylic acid (mesalamine) offers comparable efficacy to sulfasalazine, but the latter is less costly and may be the only alternative in a patient’s formulary (Table 1).12,13 The adverse effects of the sulfapyridine moiety of sulfasalazine 842 Mayo Clin Proc. n requires more frequent monitoring of the complete blood cell (CBC) count and liver enzyme levels. These concerns often favor mesalamine at least for first-time users. Fifty percent of whites are slow acetylators of sulfapyridine to N-acetyl sulfapyridine, leading to accumulation of sulfapyridines with adverse effects, such as thrombocytopenia, leukopenia, and liver, lung, and pancreatic disease in slow N-acetyl-transferase acetylators.14 Yet, a Mayo clinic study revealed no significant differences between Nacetyl-transferase genotypes (rapid or slow) in predicting response or toxicity.15 Periodic monitoring of CBC counts and liver enzyme levels is recommended, particularly with the use of sulfasalazine. Although randomized controlled trials found similar efficacy of 2.4 g/d vs 4.8 g/d, the higher dose was more effective in patients with prior use of glucocorticosteroids, rectal therapy, or multiple medications.16 With the present drive for deep remission (ie, clinical, endoscopic, and histologic remission), 4.8 g/d was more effective in achieving mucosal healing (ie, giving a higher dose for longer period, eg, 12 weeks), especially in patients with longer duration of disease (65% with 4.8 g vs 58% with 2.4 g at 3 weeks and 80% vs 68% at 6 weeks).17 A revisit of prior oral and rectal combined therapy revealed a faster response of rectal bleeding, often as soon as 2 days, and a decrease in bowel movements within a median of 8 days. Similar combined therapy could achieve clinical and endoscopic healing within 3 weeks.16 If the patient is still symptomatic, consider alternating hydrocortisone or budesonide enemas at bedtime and suppositories with 5-aminosalicylic acid in the morning, even in patients with extensive pancolitis, before embarking on immunomodulator and biologic therapy. Rectal therapy is often forgotten as a necessary component of oral therapy because tenesmus, urgency, and fear of incontinence are the overarching concerns of most patients. Patient education regarding topical therapy efficacy is essential to overcome aversion to rectal agents. Social concerns for the college student living in a dormitory or a military recruit in barracks require collaboration with the health service to provide a private setting. Occasionally, severe proctitis may become resistant to all medical therapies. It is appropriate to consider surgery despite such limited disease. August 2013;88(8):841-853 n http://dx.doi.org/10.1016/j.mayocp.2013.05.001 www.mayoclinicproceedings.org MANAGEMENT OF ULCERATIVE COLITIS TABLE 1. Management of UC Key Points 1. Challenge the diagnosis: Review all prior imaging endoscopic laboratory and surgical records. Consider second gastrointestinal pathologist’s opinion 2. Due diligence: Rule out other causes, including concomitant neoplasia and dysplasia 3. Confirm active disease by endoscopy, biopsy, and CRP and FCP measurement before embarking on therapy (ie, rule out IBS-like confounding symptoms) 4. Customize therapy to patient’s disease severity (ie, mild-moderate to severe) and constraints of their daily activity (obstacles to regular dosing, followup appointment, procedures, and imaging studies) 5. Mild-moderate to severe UC: Add topical therapy to control tenesmus despite extent of disease 6. Adherence decisions: Consider once- vs twice-daily 5-aminosalicylic acid “toothbrush” approach 7. Predictors of relapse: Even with clinical remission (eg, biopsy with basilar plasmacytosis, increasing CRP and FCP levels, or change in SIBDQ) 8. Exit strategy: Glucocorticoid therapydalways limit to short-term use, never maintenance. Plan exit strategy with immunomodulator or biologics 9. Initial visit requirements: Baseline studies include purified protein derivative or Quantiferon gold test, stool culture and Clostridium difficile, pregnancy test if indicated, vaccination status for hepatitis A and B, and TPMT enzyme if immunomodulator or biologic therapy is anticipated. MRI or CT enterography if Crohn disease is suspected 10. Earlier use of biologics and immunomodulators is favored rather than risk long delays. Early surgical consultation if severe disease. Caution with immunomodulator or biologics in frail elderly patients and in males <30 y for fear of HSTCL CRP ¼ C-reactive protein; CT ¼ computed tomography; FCP ¼ fecal calprotectin; HSTCL ¼ hepatosplenic T-cell lymphoma; IBS ¼ irritable bowel syndrome; MRI ¼ magnetic resonance imaging; SIBDQ ¼ Short Inflammatory Bowel Disease Questionaire; TPMT ¼ thiopurine methyltransferase enzyme; UC ¼ ulcerative colitis. 5-Aminosalicylic AcideRelated Renal Disease Risks of renal disease are rare, such as interstitial nephritis, which occurs in 0.20%.18 Nevertheless, it is wise to avoid use in patients with preexisting renal disease or renal calculous disease. Aging is associated with a decrease in creatinine clearance when calculating the effects of 5-aminosalicylic acid. Nevertheless, the greater decrease in creatinine clearance in 61 elderly patients with IBD was related to the cumulative 5-aminosalicylic acid dose.19 This population requires vigilant monitoring, even at the lowest effective 5-aminosalicylic acid dose, with semiannual creatinine clearance testing. Adherence Regarding Once- vs Twice-Daily Use No superior efficacy benefit exists for 5-aminosalicylic acid preparations over sulfasalazine except for cost and formulary availability.13,20 The mesalamine MMX formulation of 5-aminosalicylic acid is as effective, but the value of once-daily vs twice-daily dosing has been challenged.21 In general, no superiority of any one delivery system of 5-aminosalicylic acid has been reported regarding adherence.21 Use the “toothbrush” approach: advise patients to take their medications when brushing teeth in the morning and before sleeping, and thus avoid a midday dose. Analysis of pharmacokinetic data on plasma and urinary 5aminosalicylic acid excretion indicates similar Mayo Clin Proc. n August 2013;88(8):841-853 www.mayoclinicproceedings.org n systemic exposure of all 5-aminosalicylic acid formulations, 5-aminosalicylic acid prodrugs, or their release profile of 5-aminosalicylic acid.20 Proctitis remains problematic because most randomized controlled studies exclude such patients. However, the combination of topical and oral 5-aminosalicylic acid can achieve notable rectosigmoid mucosal concentrations. Budesonide is preferred in enema or suppository as an alternative to hydrocortisone to lessen systemic bioavailability. When Response to 5-Aminosalicylic Acid Is Poor It is essential to rule out confounding factors, such as CMV, sexually transmitted diseases (particularly with men who have sex with men), and neoplasia, that may masquerade as indolent infections. Additional biopsy by a colorectal surgeon and review by a second gastrointestinal pathologist is always appropriate. When UC is refractory to medical therapy, it is appropriate to consider surgery even for limited disease.22 If the disease worsens while the patient is undergoing therapy, consider a drug holiday because a small proportion (5%) of patients experience worsening with 5-aminosalicylic acid drugs.23 Predictors of Relapse Do not be fooled by clinical remission alone (ie, improved stool frequency and absent rectal bleeding) because 42% of such patients have continued mucosal inflammation that will signal http://dx.doi.org/10.1016/j.mayocp.2013.05.001 843 MAYO CLINIC PROCEEDINGS inevitable relapse.24 Predicting relapse can be difficult, especially in patients with apparently favorable clinical and endoscopic (Mayo score 0) findings. However, a pathologist’s review of histologic findings in the presence of endoscopic remission may reveal active disease manifested by basal plasmacytosis. In 21% of such patients, this finding was predictive of a relapse with an accuracy of 77%.25 Given such a finding, a more aggressive optimization of therapy should be considered. Fecal calprotectin appears to be a more consistent predictor of clinical relapse, mirroring the severity of inflammation, and is useful in distinguishing IBD from irritable bowel syndrome when symptoms overlap.26 Fecal calprotectin better reflects endoscopic activity in UC than CRP level, platelet count, hemoglobin level, or leukocyte level.27 5-Aminosalicylic acid as a chemoprotective agent against colorectal cancer remains a contentious issue. The initial optimistic reports28,29 and a meta-analysis30 are challenged by the Mount Sinai experience31 and a Canadian meta-analysis.32 Glucocorticosteroids: “Always Have an Exit Strategy” Moderate to severe UC has in the past been the clarion call for corticosteroid use and advocated by the 2010 American College of Gastroenterology guidelines (Table 2).33 However, the adverse events, corticosteroid dependency, and lack of mucosal healing require caution. The immediate salutary effects of glucocorticosteroids as an inexpensive and reproducible benefit should still temper its use with a need for an exit strategy for an alternative therapy. The impressive efficacy and safety with antie tumor necrosis factor (TNF) therapy and more so with concomitant immunomodulator therapy TABLE 2. American College of Gastroenterology Classification of UC Severitya Classification Mild Moderate Severe Fulminant a Features <4 Stools per day with or without blood, normal ESR, no sign of toxic effects 4 Stools per day with or without blood, minimal signs of toxic effects >6 Stools per day with blood, evidence of toxic effects (fever, tachycardia, anemia, or elevated ESR) >10 Stools per day, continuous bleeding, toxic effects, abdominal tenderness and distention, transfusion requirement, colonic dilation on radiography ESR ¼ erythrocyte sedimentation rate; UC ¼ ulcerative colitis. Data from Am J Gastroenterol.33 844 Mayo Clin Proc. n were documented in the Success trial and should be considered.34 A limit of 3 months maximum for continued tapering of glucocorticosteroids will provide an opportunity for introduction of alternate therapies and prevent further bone loss.35,36 At this time a discussion regarding bone density loss, opportunistic infections, cataracts, and avascular necrosis with long-term glucocorticosteroid use should be documented in the medical record. On occasion, reintroduction of high-dose 5-aminosalicylic acid (4.8 g) has been successful in a select 20% of patients maintaining remission with a glucocorticosteroid taper.37 The goal of mucosal healing is limited with glucocorticosteroids; thus, the early introduction of immunomodulators and biologics is reasonable with 2 exceptions: elderly, frail patients with IBD or young male patients (<30 years old). The latter have shown a proclivity for hepatosplenic T-cell lymphoma with thiopurines alone or possibly in combination with anti-TNFs. The number needed to harm has been revised to 1:12,616.38 Budesonide is an alternative corticosteroid preparation of first-pass metabolism category cloaked in the mesalamine formulation, which is presumed to enhance distal colon delivery. This preparation was deemed safe because of a lessened systemic effect. However, in one trial, 5-aminosalicylic acid granules were superior to budesonide.39 The patients with UC in the budesonide CORE I and II trials had a 17.7% clinical and endoscopic remission with 9 mg of budesonide vs 6.2% with placebo. Yet 31.3% of selected patients with left-sided disease taking budesonide, 9 mg, entered clinical and endoscopic remission vs 5.9% of those taking placebo; 40.6% of patients taking budesonide achieved mucosal healing vs 26.0% of patients taking placebo. No significant longterm adverse glucocorticosteroid effects were seen with the 9-mg budesonide dose.40 This mesalamine formulation may fill the gap in those patients in whom 5-aminosalicylic acid therapy failed but who are not willing to accept the hazards of systemic glucocorticosteroids. Recapitulation When are glucocorticosteroids appropriate to use? Can UC be managed without glucocorticosteroids? Glucocorticosteroids are embedded in August 2013;88(8):841-853 n http://dx.doi.org/10.1016/j.mayocp.2013.05.001 www.mayoclinicproceedings.org MANAGEMENT OF ULCERATIVE COLITIS the American College of Gastroenterology guidelines, but caution is required because most patients with UC are in moderate or mild categories and usually do not require glucocorticosteroids.33 If there is an acute flare with fever, bloody diarrhea, pain, elevated FCP and CRP levels, elevated white blood cell count, and low albumin level, an abbreviated glucocorticosteroid course has been recommended but always with an exit strategy (ie, use for no longer than 3 months and begin concomitant immunomodulator therapy while tapering).33 A subset of patients who achieve corticosteroid-induced remission may benefit from a retrial of high-dose oral and rectal 5aminosalicylic acid before moving on to immunomodulator and biologic therapy.37 In inpatients, intravenous glucocorticosteroid therapy administered for more than 3 days without symptomatic improvement is a hazard signal; infliximab or cyclosporine and surgery should then be considered. Immunomodulators: “The Good and the Bad” The role of thiopurines (6-mercaptopurine and azathioprine) is less well defined and has lesser efficacy in UC than in Crohn disease. The delay in onset of effect may be as long as 12 weeks, making this drug inappropriate for the acutely ill patient with UC.41 However, usually a subset of patients responds within 4 to 6 weeks; these patients are generally males with more severe extensive disease who require hospitalization because of failing glucocorticosteroid therapy. Immunomodulators play a role as an exit strategy when tapering glucocorticosteroids and are more effective in maintaining remission than 5-aminosalicylic acid.42 Thiopurine methyltransferase enzyme (TPMT) should be measured before immunomodulator use and particularly if higher 6mercaptopurine and azathioprine dosage is contemplated. A normal level is seen in 88% of patients, but 11% have an intermediate enzyme activity, and 0.3% of patients lack the enzyme entirely and are at risk for severe and rapid adverse effects, including myelosuppression and hepatic dysfunction. Yet 5% of patients with adequate TPMT levels may still experience myelosuppression.43 Mayo Clin Proc. n August 2013;88(8):841-853 www.mayoclinicproceedings.org n Screening for TPMT alone should not substitute for monitoring the patient’s CBC count or liver function test results.44 Considerations in ordering the 6-thioguanine nucleotide metabolite (>230 pmol/8 108 is the effective range) as a means of monitoring the patient include whether it is worth the cost and whether adherence difficulties are anticipated.45,46 However, a mean corpuscular volume to white blood cell count ratio greater than 12 may give comparable data.47 There is value in determining 6-methylmercaptopurine and 6-thioguanine nucleotide metabolite levels when suspected hepatotoxicity emerges. Should abnormal liver enzyme levels evolve during immunomodulator use, rather than discontinuing use of the drug, adding allopurinol, 100 mg/d, with reduction of the immunomodulator dose to one-fourth prior levels usually permits continued immunomodulator therapy with liver enzyme resolution.48 The only concern is that this approach may increase potential for infection.49 The emerging concern with long-term thiopurine use is lymphoma50-52 and nonmelanoma skin cancers.53,54 However, French and Dutch patients with IBD reportedly had a reduced incidence of colorectal cancer when taking thiopurines, which was not true for 5-aminosalicylic acid.55,56 A gratifying lack of thiopurine effect on pregnancy has been established,57 permitting pregnant patients to continue its use when it effectively maintains remission. Irritable bowel disease activity is almost always the greater threat to the pregnancy and requires continued thiopurine use. The lack of thiopurine effect on the father’s (with IBD) ability to influence a pregnancy was seen in a Spanish study.58 Anticipate that up to 50% of thiopurinetreated patients will discontinue the drug therapy by 1 year because of lack of efficacy or adverse effects (eg, pancreatitis and infection). Nausea can be controlled by bedtime dosing. Patients should always be encouraged to contact the treating physician if any new or different symptoms supervene. Methotrexate’s limited role in UC has been particularly hampered by adverse effects and high dropout rate as noted in a recent Italian trial. Clinical and endoscopic remission rates of 82% and 72% in 17 patients were mitigated after 3 months when only 9 of 17 patients http://dx.doi.org/10.1016/j.mayocp.2013.05.001 845 MAYO CLINIC PROCEEDINGS continued its use.59 In an initial study with methotrexate therapy in IBD only 40% remained in remission at 59 weeks.60 Methotrexate is contraindicated in pregnancy. Its use is further limited by prospects of hepatic fibrosis, hypersensitivity pneumonitis, alopecia, overall intolerance, and oligospermia.61 However, no greater liver enzyme abnormalities are seen with low-dose methotrexate than with thiopurines.62 All patients receiving methotrexate should receive folic acid supplementation. Probiotics Other than one very small Italian study of probiotic preparation (VSL 3),63 there are few probiotic studies to merit its use in UC patients. Yet patients will continue to insist on using probiotics and other complementary medications. Curcumin64,65 and Natura-a66 (Natrogen Therapeutics Inc; a STAT-3 selective inhibitor that “rebalances” the T helper cell type 17/T-regulatory axis) seem promising, but there are no large randomized controlled trials of significance. Which Biologics and Why? Infliximab has clinically important value in UC, with overall better remission and response rates than placebo, less need for dose escalation, and longer duration of efficacy. In addition, UC mucosal healing was correlated with a lesser rate of colectomy in the Active Ulcerative Colitis Trial 1 in patients taking infliximab.67 Adverse effect mortality and morbidity appear substantially greater with glucocorticosteroid and narcotic use and thiopurines, yet the risk of opportunistic infection persists with biologics, especially in elderly patients.68 The Active Ulcerative Colitis Trials 1 and 2 reported a doubling of the remission rate vs placebo. Sixty percent to 70% of infliximab-treated patients had clinical and endoscopic improvement vs 40% of the placebo group, with a reduction in hospitalizations and colectomy.69,70 This response was sustained at 3 years.71 Monitoring a response with sigmoidoscopy alone may be disappointing because the proximal colon heals faster than the distal rectosigmoid.72 The Success trial reaffirmed the benefits in UC, with remission rates of 63% for combined azathioprine and infliximab (ie, mucosal healing), 55% for infliximab alone, and 37% for azathioprine alone.34 Mucosal healing with infliximab proved 846 Mayo Clin Proc. n to be the best signal of a favorable long-term clinical outcome.67 Although no head-to-head trials exist between infliximab and adalimumab delineating a definitive superiority or equivalence between these 2 agents, adalimumab as a self-administered alternative to intravenous infliximab was used in 248 patients with UC.73 These patients had an induction remission rate of 16.5% vs 9.3% for the placebo group at 8 weeks. There was maintenance of remission at 52 weeks using 40 mg every other week in 17.3% vs 8.5% of the placebo group, which is a very modest to less than expected rate.73 However, the initial adalimumab responders (50.4% at 8 weeks vs 34.5% in the placebo group) maintained that response in 30.2% of patients vs 18.3% of those taking placebo at 52 weeks, with anticipated lower colectomy and hospitalization rates.74 If patients were naive to anti-TNF, the remission rate at week 8 was 21.3% vs 11% for those taking placebo, and when continued to week 52 these patients had a 22% remission rate vs 12.4% for the placebo group. Mucosal healing was statistically significantly higher in anti-TNFenaive patients. Lymphoma is the most common concern of patients when discussing biologics. The risk of lymphoma is approximately 5.5 cases per 10,000 patient-years, with a standard incidence ratio of 9.7 for anti-TNF therapy, which is only slightly higher than that for the general population.75 Such discussions of biologic use with patients would be more accepted if the benefits of biologics are emphasized in controlling inflammation, thereby lessening hospitalizations and surgery. Indeed, a beneficial effect of anti-TNF therapy on bone formation has also been noted.76 Once immune suppression has begun, vigilance is needed for opportunistic infections, such as histoplasmosis, coccidiomycosis, and blastomycosis, especially in endemic areas. Histoplasmosis can mimic community-acquired pulmonary infections, resulting in a dangerous delay in instituting appropriate therapy. Tuberculosis testing may include the QuantiFERONTB Gold test (Cellestis, Ltd) and a purified protein derivative (tuberculin) skin test and chest radiography, although most reported tuberculosis cases have been extrapulmonary. Isoniazid should be administered if test results are positive, and immunomodulator or biologic therapy can begin before the completion August 2013;88(8):841-853 n http://dx.doi.org/10.1016/j.mayocp.2013.05.001 www.mayoclinicproceedings.org MANAGEMENT OF ULCERATIVE COLITIS of the full 6- to 9-month course of isoniazid.77 Nevertheless, cases of breakthrough tuberculosis (cervical lymphadenopathy and gastrointestinal tuberculosis) have occurred.78 Yearly tuberculosis retesting while undergoing biologic therapy has been advocated, particularly in vulnerable patients, such as American Indians, Southeast Asians, Central Americans, and patients with human immunodeficiency virus.79 Untreated hepatitis B poses a lethal threat with immunosuppressive therapy. A patient’s global vaccination schedule should be updated and precede immunomodulator or biologic use. An antipapillomavirus antibody (Gardacil) and serial Papanicolaou smears are required for young women, particularly those undergoing immunomodulator or combined therapy. Although questioned by some investigators, cervical dysplasia remains a risk with immunomodulator therapy.80 An antipapillomavirus antibody (Gardacil) has also been considered for young men undergoing immunomodulator therapy. Elderly patients remain at particular risk for serious infection with the use of biologics, and neoplasia during immunomodulator therapy appears to be a greater risk than during biologic therapy.68,81 Earlier use of biologics is key to controlling inflammation and thereby lessens the need for hospitalization and surgery, but the risk of serious infection remains elevated. The significant costs of these agents may be an impedance for use in select patients (Table 3). MEDICAL THERAPY AND MANAGEMENT OF THE HOSPITALIZED UC PATIENT Although 91% of patients with UC have mild to moderate disease, once severe symptoms surface, 18% to 25% of patients will require hospitalization82,83 and 27% may require colectomy.84 Hospitalizations result most often from failure of outpatient medical therapy and the more dreaded complications of toxic megacolon, thrombotic disease, and opportunistic infections, including C difficile and hemorrhage. Baseline laboratory studies are similar to those described in the initial visit but now are required daily, along with a CBC count with a differential and albumin and electrolyte measurement. Testing for C difficile by polymerase chain reaction is mandatory. Mayo Clin Proc. n August 2013;88(8):841-853 www.mayoclinicproceedings.org n Admission flexible sigmoidoscopy is safe for further identifying disease activity and obtaining biopsy specimens for CMV testing, especially if deep excavated ulcers and patchy involvement are noted. C difficile endoscopic findings may lack pseudomembranes in 50% of patients85 but may be suggested on biopsy of a “volcano” effect, but this is not universally true. Colonoscopy should be avoided if colonic dilation exists, suggesting transmural extension of the inflammatory process and thereby risking perforation,86 although colonoscopy has been used in acute UC flares. There is concern in patients with severe disease about the negative effect of the colon preparation and endoscopic risks when compared with controls with less severe UC.87 Medical therapy should begin with corticosteroids but with a clear exit strategy. If the clinical situation does not improve by the third day of intravenous corticosteroid therapy (40 mg or 1 mg/kg maximum), surgery vs infliximab vs cyclosporine should be considered. There is no advantage to dividing the corticosteroid dosage during 24 hours.88 Vigilance in recording the daily number of bowel movements and daily abdominal radiographs are needed. Intravenous fluids, subcutaneous heparin for venous thromboembolism prophylaxis (which is not contraindicated in the presence of bloody bowel movements), and topical rectal corticosteroids should be administered. Venous thromboembolism incidence is increased 3-fold in IBD, especially with acute disease.89 Clinical remission and improvement in corticosteroid-responsive patients can be anticipated within 3 to 5 days. Nevertheless, 27% of patients may require colectomy, and only 60% respond to intravenous corticosteroids, highlighting the importance of an early colorectal surgical consultation.90 Immunomodulators have little role at this point, considering they require 2 to 4 weeks to reach a steady state and as long as 8 to 10 weeks for sustained clinical improvement. A TPMT enzyme level should be determined at this time when anticipating transition to an immunomodulator. Short of restricting oral intake in patients undergoing surveillance for toxic megacolon, hospitalized patients with severe IBD should be allowed to eat. The effect of complete bowel http://dx.doi.org/10.1016/j.mayocp.2013.05.001 847 MAYO CLINIC PROCEEDINGS rest does not influence the outcome in corticosteroid-treated patients.91 Nutritional support is directed at concomitant malnutrition rather than consideration as therapy. Hypoalbuminemia is a major risk factor, particularly if surgery is contemplated.92 Severe to fulminant UC may require cyclosporine, with glucocorticosteroid failure as the last resort before surgery,93 although the French GETAID randomized controlled trial of infliximab vs cyclosporine revealed no statistical difference inducing a glucocorticosteroid-free remission with either an intact colon or colectomy.94 Because most clinicians are more comfortable with infliximab because it produces fewer adverse effects and does not require monitoring of cyclosporine levels, infliximab appears to be the favored drug in this difficult situation because its adverse effects are more manageable than those of cyclosporine (eg, hypocholesterinemic seizures, renal insufficiency, and renal failure). Cyclosporine therapy cannot be continued for maintenance even if a desired result occurs. Only 41% of patients taking cyclosporine will avoid colectomy, and 38% to 78% will require colectomy in a 5- to 7-year followup.95,96 Tacrolimus can then be substituted for cyclosporine for oral maintenance therapy, but data on its efficacy are limited.97 Surgery Recourse to surgery should not be considered a failure of treatment but rather an extension of a therapeutic plan. It is just as appropriate to recommend early consultation with a colorectal surgeon and colectomy for intractable distal left-sided disease or proctitis as it is for pancolitis. Predictors of colectomy in severe corticosteroid- or infliximab-refractory colitis include temperature higher than 37.5 C, tachycardia, heart rate greater than 90 beats/min, elevated CRP level, and low albumin level.97 Elevated FCP and fecal lactoferrin levels and persistent basilar plasmocytic mucosal infiltrates often forecast corticosteroid and infliximab unresponsiveness, indicating more urgent need for colectomy.25-27,98,99 Prior hospitalization, especially in men older than 65 years, is an added risk factor for colectomy.100 Surgical intervention for hemorrhage, toxic megacolon, or dysplasia is indisputable. Predictors for emergency colectomy with medical failure included the Simon Travis 848 Mayo Clin Proc. n index of 8 bowel movements (BMS) per day after 3 days or a CRP level greater than 45 mg/L with more than 2 BMS per day, which yields an 85% positive predictive value for colectomy. There is a 60% colectomy rate by day 7 with more than 3 BMS per day or if blood is visible in the stool, but most clinicians do not wait this long.101,102 Once surgery is accepted, a lengthy discussion is needed regarding risks and benefits of an ileal pouch-anal anastomosis. Risks include incontinence with multiple bowel movements, small bowel obstruction, acute and chronic pouchitis, cuffitis, irritable pouch, ischemia, CMV, prepouch ileitis (Crohn disease) (especially in patients with primary sclerosing cholangitis),103 and reduced fecundity in young women.104,105 No patient likes surprises (eg, “I wasn’t told this could happen.”). Thus, indepth discussion preoperatively is needed. Surgery in acutely ill patients often requires a 3-stage procedure with an emergency subtotal colectomy and ileostomy, then a 3-month wait for nutritional improvement before undergoing an ileoanal J pouch procedure and closure of ileostomy (ie, reversal). Surgery often includes bringing the rectal bypassed segment out as a mucous fistula or placing it subcutaneously at the lower end of the incision. This approach could limit potential postoperative infection to the wound site rather than risk an intra-abdominal abscess or perforation. The goal is reoperation in 3 months to create an ileal pouch-anal anastomosis and reverse the ostomy. Ileal pouch-anal anastomosis is an option for a fit but not frail older patient. A total proctocolectomy and end ileostomy may be the alternative procedure for the fragile elderly patient with multiple comorbidities or for patients with rectal cancer or preexisting sphincter incompetence.106 Toxic megacolon fortunately is found in only 7.9% of hospitalized patients with UC.107 A temperature greater than 38.6 C, heart rate greater than 120 beats/min, a white blood cell count greater than 10,500/mL, and anemia coupled with dehydration or altered sensorium hypertension or electrolyte imbalance is enough to set in motion a high-grade alert for surgical backup for impending colectomy. C difficile may confound management because that alone can mimic toxic megacolon. Computed tomography is preferred for detection of impending perforation with a August 2013;88(8):841-853 n http://dx.doi.org/10.1016/j.mayocp.2013.05.001 www.mayoclinicproceedings.org MANAGEMENT OF ULCERATIVE COLITIS TABLE 3. Drug Costs Drug Cost per mo ($) Cost per y ($) Lialda, 1.2 g (30 tablets; Shire US Inc) Lialda, 2.4 g Lialda, 4.8 g Asacol, 400 mg (180 tablets; Warner Chilcott), 2.4 g/d Asacol, 4.8 g/d Pentasa, 500-mg tablets (30 tablets; Shire US Inc), 4 g/d Colazal, 750 mg (270 tablets; Salix Pharmaceuticals Inc), 6.75 g/d Colazal, 750 mg (540 tablets), 13.5 g/d Sulfasalazine, 500 mg (120 tablets; generic), 2 g/d Sulfasalazine, 500 mg (240 tablets), 4 g/d Imuran, 50 mg (90 tablets; Prometheus Laboratories, Inc), 150 mg/d Azathioprine, 50 mg (90 tablets; generic), 150 mg/d (Imuran generic) Purinethol, 50 mg (60 tablets; Gate Pharmaceuticals) (6-mercaptopurine), 100 mg/d Purinethol, 50 mg (60 tablets) (6-mercaptopurine generic), 100 mg/d Rowasa enema, 7 enemas of 4 g/60 mL, 1 kit (Alaven Pharmaceutical, LLC) Canasa, 1000 mg every day (30 suppositories; Aptalis) UCERIS Budesonide MMX, 9 mg (Santarus Inc) Methotrexate, 25 mg/wk (4 vials), 2 mL of 25 mg/mL (generic) Hydrocortisone enema, 100 mg every day (28 enemas; generic) Infliximab (Remicade; Janssen Biotech Inc) (3 vials), 100 mg, 1 kit (every 8 weeks) Adalimumab (Humira; Abbott Laboratories), 40 mg/0.8 mL, 2 pens 210.00 420.00 840.00 412.50 824.00 88.80 75.00 150.00 18.00 36.00 480.00 24.00 470.00 90.00 300.00 (generic, 90.00) 630.00 2850.00 15.00 160.00 2505.00 2360.00 2520.00 5040.00 10,080.00 4950.00 9888.00 1065.00 900.00 1800.00 216.00 432.00 5760.00 288.00 5640.00 1080.00 3600.00 (generic, 1080.00) 7560.00 34,200.00 180.00 1920.00 30,060.00 28,320.00 Data are from www.goodrx.com. dilated colon.108 Diagnostic invasive procedures, narcotics, antidiarrhea medications, and anticholinergics are to be avoided. Patients with toxic megacolon require intensive intravenous support with fluid electrolytes, nutrition, and antibiotics, but nasogastric suction is unnecessary. Twice-daily laboratory tests and abdominal radiographs are required, and urgent surgery should be performed if no response occurs within 24 to 48 hours, never waiting beyond 72 hours.102,109 Pain management should be limited to acetaminophen or tramadol because narcotics are associated with increased infection and mortality as noted in the IBD TREAT registry.68 Unrelenting pain is often a marker for transmural extension of disease that warrants emergency surgery. The importance of identifying C difficile, even when least expected, cannot be overemphasized. C difficile infection in patients with UC creates a more difficult and longer hospital stay, with greater colectomy and mortality rates.85,110 The absence of prior antibiotics does not protect against C difficile because 39% of patients with IBD have C difficile without such exposure,85 and this is especially true in older patients with IBD with multiple comorbidities.110 There is also a greater incidence in Mayo Clin Proc. n August 2013;88(8):841-853 www.mayoclinicproceedings.org n patients with IBD who undergo immunomodulator therapy. Recurrence of C difficile in IBD is frequent, and repeated or pulsed courses of vancomycin are often necessary.85 The efficacy of fecal transplant in IBD awaits further study. Cytomegalovirus represents a conundrum because detection by antigen levels does not necessarily indicate disease severity.111 Nevertheless, the corticosteroid-refractory or immune modulatoretreated patient is at risk for CMV replication and dissemination, but this is not necessarily so with anti-TNF therapy.111,112 However, endoscopic suspicion of CMV by the presence of deep ulcerations, patchy involvement, or even pseudotumors with biopsyproven Cowdry type A intranuclear inclusions merits therapy with ganciclovir and discontinuation of immunomodulator therapy.113 RECOMMENDATIONS Therapy for IBD must be individualized. The philosophy of “no one size fits all” is applicable to this population, which needs a personalized therapeutic approach. A conservative oral and rectal 5-aminosalicylic acid program usually suffices for mild to moderate UC, but the patient with severe UC may benefit from earlier intervention with immunomodulators and http://dx.doi.org/10.1016/j.mayocp.2013.05.001 849 MAYO CLINIC PROCEEDINGS biologics to preclude further hospitalizations, colectomy, or possibly cancer. ACKNOWLEDGMENTS The author thanks Seth Lipka, MD, for research and technical assistance. Abbreviations and Acronyms: BMS = bowel movements; CBC = complete blood cell; CMV = cytomegalovirus; CRP = C-reactive protein; FCP = fecal calprotectin; GETAID = Groupe d’Etude Thérapeutique des Affections Inflammatories du Tube Digestif; IBD = irritable bowel disease; PIANO = Pregnancy in Inflammatory Bowel Disease and Neonatal Outcomes; TNF = tumor necrosis factor; TPMT = thiopurine methyltransferase; UC = ulcerative colitis Potential Competing Interests: Dr Katz is on the speaker's bureau for Warner-Chilcott and UCB. 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