Clinical investigation of 41 patients with ischemic colitis accompanied by ulcer

Ischemic proctitis after low-dose-rate brachytherapy using hydrogel spacer for prostate cancer

INTRODUCTION

Recently, an absorbable hydrogel spacer is becoming more widespread to reduce rectal radiation dose for radiation therapy for localized prostate cancer.

CASE PRESENTATION

A 79-year-old male patient was referred to our hospital for radical treatment of organ-confined prostate cancer. Low-dose-rate brachytherapy was performed, and the hydrogel spacer injection was added. The spacer was properly injected between the prostate and the rectum, causing no acute complications during hospitalization. Two months after low-dose-rate brachytherapy, the patient visited our hospital with constipation and melena, without fever. He was diagnosed with ischemic proctitis based on clinical courses and examinations. He was hospitalized for 19 days and made a complete recovery with conservative treatment.

CONCLUSIONS

Herein, we report the first case of ischemic proctitis after low-dose-rate brachytherapy using hydrogel spacer for prostate cancer.

Colon ischemia: A comprehensive review

The clinical and endoscopic features of colon ischemia (CI) are non-specific. CI is correctly identified at the time of presentation in only 9% of patients is. The true incidence is likely underestimated because many mild cases resolve spontaneously without medical treatment. Furthermore, since most cases of CI are transient, and no specific cause is detected they are often considered to be "idiopathic". In the setting of severe CI correct diagnosis and prompt recognition and therapy as well as identification of underlying causes are crucial for a favourable outcome. Although less severe, mild cases may present with similar symptoms, the prognosis and management are completely different and managed conservatively rather than with surgery. Unfortunately, data from most studies and current guidelines do not provide recommendations on the long-term management of CI or about the need for endoscopic follow-up to detect the development chronic, recurrent and/or ischemic colonic strictures. In this review, we focus on the definition of CI, its aetiology, and patterns of presentation. We highlight the pharmacological and/or endoscopic management as determined severity of disease that allow for improved outcomes. Prompt recognition and treatment using a multidisciplinary approach are essential for successful management of severe CI because mortality rates are significantly higher when the diagnosis is delayed.

Leukocytes and creatinine may predict severity and guide management of ischemic colitis

BACKGROUND

Ischemic colitis (IC) is caused by a transient hypo-perfusion of the colon leading to mucosal ulcerations, inflammation, and hemorrhage. The primary aim was to identify predictive factors of endoscopic severity of IC. Secondary endpoints were to show epidemiology, clinical presentation, endoscopic findings, and outcomes of IC.

METHODS

In this single-center retrospective analysis, IC was scored according to endoscopy as: grade 1 (hyperemia, <1 cm erosions and non-confluent ulcers); grade 2 (>1 cm superficial, partially confluent ulcers); and grade 3 (deep or diffuse ulcers or necrosis). Then, IC was grouped into low- (grade 1) and high-grade (grades 2 and 3). Significant (P≤0.1) independent factor of severe IC at univariate analysis were entered into multivariate analysis and considered significant at P<0.05.

RESULTS

227 patients (male:female 60:167; mean age 72.7±16.2 years) were included. IC was scored as grade 1 in 137/227 (60.4%), grade 2 in 62/227 (27.3%), and grade 3 in 28/227 (12.3%) patients. At univariate analysis, age (74.9 vs. 71.3 years; P=0.09), diabetes (14.4% vs. 12.4%; P=0.09), and leukocytosis or creatinine elevation (74.4% vs. 60.6%; P=0.032) were associated with endoscopic high-grade IC. At multivariate analysis, leukocytosis and creatinine levels remained associated with high-grade IC (44.7% vs. 29.9%; odds ratio 1.92, 95% confidence interval 1.07-3.52; P=0.030).

CONCLUSIONS

Although confounding factors cannot be excluded due to study design and patients' characteristics, leukocytosis and/or creatinine elevation at hospital admission were significantly related with endoscopic high-grade IC and might be used to stratify patients for the need of endoscopy.

Ischemic colitis after enema administration: Incidence, timing, and clinical features

BACKGROUND

Enema administration is a common procedure in the emergency department (ED). However, several published case reports on enema-related ischemic colitis (IC) have raised the concerns regarding the safety of enema agents. Nevertheless, information on its true incidence and characteristics are still lacking.

AIM

To investigate the incidence, timing, and risk factors of IC in patients receiving enema.

METHODS

We consecutively collected the data of all adult patients receiving various enema administrations in the ED from January 2010 to December 2018 and identified patients confirmed with IC following enema. Of 8320 patients receiving glycerin enema, 19 diagnosed of IC were compared with an age-matched control group without IC.

RESULTS

The incidence of IC was 0.23% among 8320 patients receiving glycerin enema; however, there was no occurrence of IC among those who used other enema agents. The mean age ± standard deviation (SD) of patients with glycerin enema-related IC was 70.2 ± 11.7. The mean time interval ± SD from glycerin enema administration to IC occurrence was 5.5 h ± 3.9 h (range 1-15 h). Of the 19 glycerin enema-related IC cases, 15 (79.0%) were diagnosed within 8 h. The independent risk factors for glycerin-related IC were the constipation score [Odds ratio (OR), 2.0; 95% confidence interval (CI): 1.1-3.5, P = 0.017] and leukocytosis (OR, 4.5; 95%CI: 1.4-14.7, P = 0.012).

CONCLUSION

The incidence of glycerin enema-related IC was 0.23% and occurred mostly in the elderly in the early period following enema administration. Glycerin enema-related IC was associated with the constipation score and leukocytosis.

Diagnosis and treatment of ischemic colitis

Ischemic colitis (IC) is a common reason of acute lower gastrointestinal bleeding, and it is frequently seen in elderly people. In recent years, both the incidence and prevalence of IC have been rising. Most episodes of IC are transient and self-limited and only a minority of cases are severe. IC often has missed and delayed diagnosis. This review mainly focuses on the progress in the understanding of the diagnosis and therapy of IC.

Predictive factors of short-term mortality in ischaemic colitis and development of a new prognostic scoring model of in-hospital mortality

BACKGROUND

Ischaemic colitis (IC) is the most common form of intestinal ischaemia with a wide spectrum of severity, with possible risk of death.

OBJECTIVE

The purpose of this study was to evaluate predictive factors of in-hospital and short-term mortality, in a cohort of patients with IC.

METHODS

Retrospective analysis of IC cases diagnosed between 2008-2013 in a single tertiary centre, with assessment of factors at the time of diagnosis associated with in-hospital and 90-day mortality.

RESULTS

Of the 203 patients included (132 women), 47 (23%) died during the follow-up (median: 16 months). There were 21 patients (45%) who died during hospitalization and at 90 days there were 30 deaths (64% of total). In multivariate analysis, need for vasopressor support (odds ratio (OR) 11.21; 95% confidence interval (CI): 2.31-54.24; p = 0.01), Intermediate or Intensive Care Unit (ICU): admission (OR 7.01; 95% CI: 1.48-33.16; p = 0.014) and atrial fibrillation (OR 4.99; 95% CI: 1.1-26.23; p = 0.048) were independently and significantly associated with in-hospital mortality. Using the coefficients of the estimated logistic model, we calculated a scoring model to predict the occurrence of in-hospital mortality. The presence of all three risk factors predicted a probability of death of 32% with an area under the receiver operating characteristic curve (AUROC) of 0.89 (95% CI 0.80-0.98. At 90 days, the presence of chronic kidney disease (OR 7.46; 95% CI: 1.87-29.73; p = 0.002), and male sex (OR 5.85; 95% CI: 1.57-21.83; p = 0.009) were also independently associated with mortality.

CONCLUSIONS

Most deaths in ischaemic colitis occur in the first 90 days after admission, sharing similar risk factors. Assessment of the presence of atrial fibrillation, need of vasopressor support or hospitalization in the intermediate/intensive care unit provides a useful tool to estimate in-hospital mortality and to establish the management for patients admitted for ischaemic colitis.

Systematic review of the management of ischaemic colitis

AIM

The study reviews the literature related to ischaemic colitis (IC) to establish an evidence base for its management and to identify factors predicting severity and mortality.

METHOD

A systematic review of the English language literature was conducted according to recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. MEDLINE, Embase and Cochrane Library databases were searched using the keyword search 'ischaemic colitis OR colon ischaemia OR colonic ischaemia OR management ischaemic colitis'. IC is often misdiagnosed so only studies where the diagnosis was supported by histopathology in every case were included. Critical appraisal was performed of included studies using predefined quality assessment checklists and narrative data synthesis.

RESULTS

In all, 2610 publications were identified. Of these, eight retrospective case series and three case controlled studies describing 1049 patients were included. Medical management was used in 80.3% patients of whom 6.2% died. Surgery was required in 19.6% of whom 39.3% died. The overall mortality of IC was 12.7%. Lack of rectal bleeding, peritonism and renal dysfunction were commonly quoted predictors of severity; however, right sided IC appeared to be the most significant predictor of outcome.

CONCLUSION

Most patients with IC can be managed conservatively. Right sided IC may be the most significant predictor of severity.

Predictors of severity in ischaemic colitis

PURPOSE

Ischaemic colitis (IC) is an inadequate perfusion leading to potentially life-threatening colonic inflammation. The aim was to identify patient characteristics that predict severity in biopsy-confirmed IC.

METHODS

A retrospective study of consecutive patients admitted with a robust diagnosis of IC over a 5-year period was performed. As IC is often misdiagnosed, strict inclusion criteria including supporting histopathology, exclusion of inflammatory bowel disease, absence of recent antibiotics or negative stool sampling with testing for Clostridium difficile were adhered to. Due to differing pathophysiology involved, patients suffering IC due to injury to colonic perfusion from vascular procedures or tumours were also excluded. Patients were divided by outcomes into a severe IC group including those that needed surgery or suffered mortality and a non-severe IC group that included patients managed medically with good evolution during their index admission. Patient characteristics were analysed to identify statistically significant predictors of severity (p < 0.05).

RESULTS

Thirty-two patients (11 males, 21 females; mean age 72.5) met the inclusion criteria. Medical management was adopted in 23 patients with a single mortality (4.3%). Nine patients were managed surgically with two mortalities (22.2%), giving an overall mortality of 9.4% and a severe IC group consisting of ten patients. Significant prognostic predictors of severity included: right-sided IC (p = 0.0002), guarding (p = 0.001), lack of bleeding per rectum (p = 0.005) and chronic constipation (p = 0.02).

CONCLUSIONS

The majority of patients with IC can be managed conservatively. Right-sided IC, guarding, lack of bleeding per rectum and chronic constipation are associated with severe IC.

Development and validation of a novel prognostic scoring model for ischemic colitis

PURPOSE

This study was conducted to identify prognostic factors affecting the course of ischemic colitis and to develop a prognostic scoring model.

METHODS

We analyzed medical records of consecutive patients with ischemic colitis treated between October 2002 and September 2008 at Severance Hospital, Seoul, Republic of Korea. Patients were excluded if results of endoscopy were unavailable. Patients were classified as having severe ischemic colitis on the basis of outcome (improvement delayed for more than 2 weeks, complications requiring surgery, or death). Univariate analyses and multivariate logistic regression analyses with backward stepwise selection were used to identify clinical, endoscopic, and laboratory variables associated with severe ischemic colitis. A novel prognostic scoring model was derived from the data, with probability of severe ischemic colitis and risk index determined for 8 risk groups based on independent risk factors identified by multivariate analyses. Predictive power was tested by means of 10-fold cross-validation, with area under the receiver operating characteristic curve representing discrimination accuracy.

RESULTS

Analyzable data were available for 153 of 173 consecutive patients. Ischemic colitis was classified as severe in 20 patients. Multivariate analyses showed the following significant independent predictors of severe ischemic colitis: tachycardia (adjusted odds ratio = 4.6; 95% CI, 1.4-14.7), shock within 24 hours after admission (adjusted odds ratio = 6.5; 95% CI, 2.0-21.2), and endoscopic evidence of ulceration (adjusted odds ratio = 9.9; 95% CI, 2.0-48.8). Probability of severe ischemic colitis and risk index were 74 times higher for patients with all 3 risk factors (group 8) than for patients with none (group 1). Internal validation showed the area under the receiver operating characteristic curve to be 0.91 (95% confidence interval, 0.86-0.96).

CONCLUSIONS

Endoscopic findings and instability of vital signs were associated with the disease course of ischemic colitis. A novel scoring model based on presence of tachycardia, shock within 24 hours after admission, and endoscopic evidence of ulceration provides a method of assessing patient prognosis and should be further validated.

Ischemic colitis in the elderly: predictors of the disease and prognostic factors to negative outcome

OBJECTIVE

Ischemic colitis (IC) poses a challenge for physicians, especially in elderly patients. The aim of this study was to identify predictors of the disease and to assess the factors predicting its evolution in elderly people.

MATERIAL AND METHODS

A retrospective study was undertaken in patients with IC admitted to Padua General Hospital between 2003 and 2008. Only patients with biopsy-proven IC were considered. Fifty control subjects were randomly selected from those seen at our units for acute geriatric disease during the same interval. Patients with IC were classified as having either a positive or negative outcome.

RESULTS

A total of 46 patients were considered. The risk factors for IC identified from univariate analysis were analyzed in a multivariate logistic regression model and constipation [adjusted odds ratio (OR) 4.8; 95% confidence interval (CI) 1.1-20.1], vasculopathy (OR 4.9; 95% CI 1.4-16.6), hepatitis C virus (HCV) (OR 9.9; 95% CI 1.1-92.9) and cancer (OR 7.5; 95% CI 2.1-26.9) confirmed their independent significance as risk factors. Hematochezia was predictive of a positive outcome (OR 0.07; 95% CI 0.02-0.40), while cancer (OR 3.2; 95% CI 1.2-11.9), HCV positivity (OR 9.6; 95% CI 1.6-56.5), signs of peritonism (OR 4.7; 95% CI 1.2-18.4), localization in the right colon (OR 5.75; 95% CI 1.5-21.9) and increased levels of lactate dehydrogenase (LDH) and urea were independently predictive of a negative outcome.

CONCLUSIONS

Elderly patients with IC are characterized by significant comorbidities. The absence of hematochezia and the presence of a concomitant malignancy, HCV, a marked increase in urea and LDH and disease involving only the right colon are factors that may predict a negative outcome in elderly patients.

Rebamipide enema therapy for left-sided ischemic colitis patients accompanied by ulcers: Open label study

AIM: To attempt rectal administration of rebamipide in the treatment of ischemic colitis patients with ulcers, and evaluate its effects.

METHODS: We compared 9 ischemic colitis patients (2 men, 7 women) with ulcers treated by bowel rest only from 2000 to 2005 (conventional therapy group), with 6 patients (2 men, 4 women) treated by rebamipide enema therapy in 2006 (rebamipide enema therapy group) and analyzed the mean duration of fasting and hospitalization, degree of ulcer healing, and decrease in WBC count for the two groups.

RESULTS: The mean duration of fasting and hospitalization were 2.7 ± 1.8 d and 9.2 ± 1.5 d in the rebamipide group and 7.9 ± 4.1 d and 17.9 ± 6.8 d in the control group, respectively, and significantly reduced in the rebamipide group (t = -2.915; P = 0.0121 and t = -3.054; P = 0.0092). As for the degree of ulcer healing at 7 d after admission, the ulcer score was reduced by 3.5 ± 0.5 (points) in the rebamipide group and 2.8 ± 0.5 (points) in the control group (t = 1.975; P = 0.0797), while the decrease in WBC count was 120.0 ± 55.8 (× 10²/&mgr;L) in the rebamipide group and 85.9 ± 56.8 (× 10²/&mgr;L) in the control group (t = 1.006; P = 0.3360).

CONCLUSION: In left-sided ischemic colitis patients with ulcers, rebamipide enema therapy significantly reduced the duration of fasting and hospitalization, recommending its use as a new and effective therapeutic alternative.

Ischemic colitis in postmenopausal women taking hormone replacement therapy

BACKGROUND AND AIM

Estrogen and progestins have established effects on the gastrointestinal tract and ischemic colitis was related in the past with certain regimens including both hormones. On this basis, we aimed to evaluate a group of postmenopausal women who presented with ischemic colitis after taking hormone replacement therapy (HRT) for the last several months.

METHOD

Postmenopausal women taking conjugated estrogens, conjugated estrogens plus medroxyprogesterone acetate, 17beta-estradiol plus norethisterone and estradiol valerate plus norgestrel are included in the present study. All patients, without a medical history of bowel problems, reported an acute crisis of colitis a few months after the beginning of the treatment.

RESULTS

Fasting, parenteral nutrition, intravenous antibiotic treatment with metronidazole and discontinuation of HRT proved successful. Antibiotics were continued after the patients' discharge from the hospital. A second-look colonoscopy, 3 to 4 months after the initial episode, was normal in all cases.

CONCLUSION

Ischemic colitis is a rare complication of HRT that should not be ignored when HRT is prescribed.