Twenty years of embolization for acute lower gastrointestinal bleeding: a meta-analysis of rebleeding and ischaemia rates.

BACKGROUND: Transarterial embolization (TAE) for acute lower gastrointestinal bleeding (LGIB) can be technically challenging due to the compromise between achieving haemostasis and causing tissue ischaemia. The goal of the present study is to determine its technical success, rebleeding, and post-embolization ischaemia rates through meta-analysis of published literature in the last twenty years. METHODS: PubMed, Embase, and Cochrane Library databases were queried. Technical success, rebleeding, and ischaemia rates were extracted. Baseline characteristics such as author, publication year, region, study design, embolization material, percentage of superselective embolization were retrieved. Subgroup analysis was performed based on publication time and embolization agent. RESULTS: A total of 66 studies including 2121 patients who underwent embolization for acute LGIB were included. Endoscopic management was attempted in 34.5%. The pooled overall technical success, rebleeding, post-embolization ischaemia rates were 97.0%, 20.7%, and 7.5%, respectively. Studies published after 2010 showed higher technical success rates (97.8% vs 95.2%), lower rebleeding rates (18.6% vs 23.4%), and lower ischaemia rates (7.3% vs 9.7%). Compared to microcoils, NBCA was associated with a lower rebleeding rate (9.3% vs 20.8%) at the expense of a higher post-embolization ischaemia rate (9.7% vs 4.0%). Coagulopathy (P = .034), inotropic use (P = .040), and malignancy (P = .002) were predictors of post-embolization rebleeding. Haemorrhagic shock (P < .001), inotropic use (P = .026), malignancy (P < .001), coagulopathy (P = .002), blood transfusion (P < .001), and enteritis (P = .023) were predictors of mortality. Empiric embolization achieved a similarly durable haemostasis rate compared to targeted embolization (23.6% vs 21.1%) but a higher risk of post-embolization ischaemia (14.3% vs 4.7%). CONCLUSION: For LGIB, TAE has a favourable technical success rate and low risk of post-embolization ischaemia. Its safety and efficacy profile has increased over the last decade. Compared to microcoils, NBCA seemed to offer a more durable haemostasis rate at the expense of higher ischaemia risk. Due to the heterogeneity of currently available evidence, future prospective and comparative studies are warranted. ADVANCES IN KNOWLEDGE: (1) Acute LGIB embolization demonstrate a high technical success rate with acceptable rate of rebleeding and symptomatic ischaemia rates. Most ischaemic stigmata discovered during routine post-embolization colonoscopy were minor. (2) Although NBCA seemed to offer a more durable haemostasis rate, it was also associated with a higher risk of ischaemia compared to microcoils. (3) Coagulopathy, malignant aetiology, and inotropic use were predictors of rebleeding and mortality. (4) Routine post-embolization endoscopy to assess for ischaemia is not indicated.

Epidemiological trends and disease burden of lower gastrointestinal bleeding in children within 10 years / 公共卫生与预防医学

Objective To retrospectively analyze the epidemiological trend of children with lower gastrointestinal bleeding in recent 10 years,and investigate the change of their disease burden,so as to provide a theoretical basis for the accurate prevention and control of children's lower gastrointestinal bleeding. Methods A total of 671 children with "lower gastrointestinal bleeding" who were diagnosed in our hospital from 2012 to 2021 were collected as research subjects. To analyze the microscopic examination rate and common etiology of lower gastrointestinal bleeding in children in the past 10 years,as well as the epidemiological characteristics of different age groups, different regions and different basic diseases; Calculate and compare the rate of disability life lost (YLD), early death life lost (YLL) and disability adjusted life year (DALY) of children with lower gastrointestinal bleeding within 10 years, and calculate the annual change percentage (AAPC) to analyze the change trend of disease burden. Results The microscopic examination rate of children with lower gastrointestinal bleeding showed a trend of increasing in the past 10 years (P18 years old, hypertension and gastroenteritis. The DALY rate, YLL rate and YLD rate caused by lower gastrointestinal bleeding in the past 10 years showed an upward trend (P<0.05). Conclusion The microscopic examination rate of lower gastrointestinal bleeding in children was graduallyincreasing,and the prevalence rate of basic diseases such as boys,hypertension and gastroenteritis was increasing;in addition,the disease burden caused by children's lower gastrointestinal bleeding was also increasing year by year and should be protected.

Long-term Risks of Recurrence After Hospital Discharge for Acute Lower Gastrointestinal Bleeding: A Large Nationwide Cohort Study.

BACKGROUND & AIMS: Currently, large, nationwide, long-term follow-up data on acute lower gastrointestinal bleeding (ALGIB) are scarce. We investigated long-term risks of recurrence after hospital discharge for ALGIB using a large multicenter dataset. METHODS: We retrospectively analyzed 5048 patients who were urgently hospitalized for ALGIB at 49 hospitals across Japan (CODE BLUE-J study). Risk factors for the long-term recurrence of ALGIB were analyzed by using competing risk analysis, treating death without rebleeding as a competing risk. RESULTS: Rebleeding occurred in 1304 patients (25.8%) during a mean follow-up period of 31 months. The cumulative incidences of rebleeding at 1 and 5 years were 15.1% and 25.1%, respectively. The mortality risk was significantly higher in patients with out-of-hospital rebleeding episodes than in those without (hazard ratio, 1.42). Of the 30 factors, multivariate analysis showed that shock index ≥1 (subdistribution hazard ratio [SHR], 1.25), blood transfusion (SHR, 1.26), in-hospital rebleeding (SHR, 1.26), colonic diverticular bleeding (SHR, 2.38), and thienopyridine use (SHR, 1.24) were significantly associated with increased rebleeding risk. Multivariate analysis of colonic diverticular bleeding patients showed that blood transfusion (SHR, 1.20), in-hospital rebleeding (SHR, 1.30), and thienopyridine use (SHR, 1.32) were significantly associated with increased rebleeding risk, whereas endoscopic hemostasis (SHR, 0.83) significantly decreased the risk. CONCLUSIONS: These large, nationwide follow-up data highlighted the importance of endoscopic diagnosis and treatment during hospitalization and the assessment of the need for ongoing thienopyridine use to reduce the risk of out-of-hospital rebleeding. This information also aids in the identification of patients at high risk of rebleeding.

Internal Hemorrhoids: A Source of Massive Obscure Lower Gastrointestinal Bleeding in Cirrhosis.

Anorectal bleeding is the second most common site of lower gastrointestinal bleeding. Colonoscopy remains the gold standard test to localize sources of lower gastrointestinal bleeding, but it can miss left-sided colon pathologies such as diverticula, rectal varices, and internal hemorrhoids. We report an unusual case of a male cirrhotic patient with massive hemorrhoidal bleeding which went undiagnosed despite multiple imaging and endoscopic evaluations. He underwent urgent sigmoidoscopy that identified grade III internal hemorrhoids and sclerotherapy which resolved the hematochezia. Decompensated cirrhosis complicates patient candidacy for surgical hemorrhoidectomy, but sclerotherapy is a viable option even for high-risk patients. Urgent sigmoidoscopy during active bleeding should be considered if hemorrhoidal bleeding is suspected but inconclusive by colonoscopy.

Massive Lower Gastrointestinal Hemorrhage as a Complication of Severe Campylobacter Enteritis.

Campylobacter enteritis is typically caused by Campylobacter jejuni or Campylobacter coli and is a major cause of diarrheal illness worldwide. Patients with Campylobacter gastroenteritis can be asymptomatic, but commonly present with a wide range of clinical symptoms including abdominal pain, diarrhea, vomiting, and occasionally self-resolving hematochezia. Although hematochezia can occur, acute massive lower gastrointestinal (GI) bleeding is a rare complication of Campylobacter gastroenteritis and should be considered as a possible differential diagnosis in the presentation of lower GI bleeds. We describe a unique case of a 48-year-old male who presented with massive lower GI bleeding requiring multiple transfusions and admission to the medical intensive unit; the patient was ultimately diagnosed with severe Campylobacter gastroenteritis.

Acute lower gastrointestinal bleeding due to low-grade mucinous neoplasm of appendix.

INTRODUCTION: Lower gastrointestinal tract (GIT) bleeding originating from the appendix is rare and may be difficult to diagnose. PATIENTS AND METHODS: In this case report, we present an 88-year-old male patient who was admitted with hematochezia due to appendiceal bleeding. A colonoscopy revealed bleeding in the appendix orifice so an appendectomy was performed, and bleeding did not recur in the postoperative period. RESULTS: The results of the microscopic examination showed low-grade mucinous neoplasm (LGMN) of the appendix. CONCLUSION: It should be kept in mind that bleeding may originate from the appendix in patients presenting with GIT bleeding. Our patient is the first to present with an acute lower GIT bleed who was diagnosed as having LGMN in the appendectomy specimen.

Massive Hematochezia Secondary to Rectal Enema Injury: The Role of Sengstaken-Blakemore Tube for Hemostasis When Endoscopy Fails.

In rare instances, rectal cleansing enemas may cause rectal injury, precipitating lower gastrointestinal hemorrhage (LGIH). In a subset of LGIH cases, the bleeding diathesis may fail to respond to traditional treatment modalities and can be life-threatening. We present a case of an 84-year-old female with cleansing enema induced rectal bleeding - she was a poor surgical candidate and due to lack of access to in-house interventional radiology teams, hemostasis was attempted with sui generis use of the Sengstaken-Blakemore tube. Our transanal application of the Sengstaken-Blakemore tube for the management of LGIH contributes further evidence supporting the use of balloon tamponade in achieving hemostasis in select patients when traditional therapeutic modalities are unavailable.

Surgical Options and Approaches for Lower Gastrointestinal Bleeding: When do we operate and what do we do?

Lower gastrointestinal bleeding (LGIB) is a common entity encountered by the surgeon. Though most LGIB stops on its own, familiarity with the diagnoses and their treatments is critical to optimal patient care. Even in 2016, surgery may be required. Advances in imaging have led to an enhanced ability to localize bleeding. Newer anticoagulants have developed which provide ease of use to the patient, but challenges to caregivers when bleeding arises.

Dieulafoy lesion in a Hartmann stump.

A 70-year-old man underwent laparoscopic anterior resection for sigmoid carcinoma, and on postoperative day 4, he required an emergency Hartmann procedure for bowel ischemia and anastomotic leakage. Five days after the emergency procedure, there was a massive hemorrhage through the anus that appeared in the abdominal drain. During exploration, the origin of the bleeding could not be found, and the rectal stump was closed over a urinary Foley catheter (with an inflated balloon) with the help of a purse-string suture. In the intensive care unit, massive hematochezia continued. Emergency transanal colonoscopy to the Hartmann stump found the rectum full of clotted blood. Active pulsatile arterial bleeding of a rectal Dieulafoy lesion was detected. After endoscopic hemostasis efforts failed, bleeding was stopped successfully by transanal suturing. The patient was discharged without any other problems, and no recurrent bleeding occurred during the 18-month follow-up. Here, we report a rectal Dieulafoy lesion in a Hartmann stump for the first time.

Guidelines for Colonic Diverticular Bleeding and Colonic Diverticulitis: Japan Gastroenterological Association.

Colonic diverticular disease has been increasing in prevalence in Japan due to the rapidly aging population. Colonic diverticular bleeding can result in hemorrhagic shock requiring blood transfusion, and it carries a high risk of recurrence within 1 year. Colonic diverticulitis can cause abscess, fistula formation, and perforation of the colon that may require surgery, and it often recurs. As a result, patients with colonic diverticular disease are often bothered by required frequent examinations, re-hospitalization, and a consequent decrease in quality of life. However, the management of diverticular disease differs between Japan and Western countries. For example, computed tomography (CT) is readily accessible at Japanese hospitals, so urgent CT may be selected as the first diagnostic procedure for suspected diverticular disease. Endoscopic clipping or band ligation may be preferred as the first endoscopic procedure for diverticular bleeding. Administration of antibiotics and complete bowel rest may be considered as first-line therapy for colonic diverticulitis. In addition, diverticula occur mainly in the sigmoid colon in Western countries, whereas the right side or bilateral of the colon is more commonly involved in Japan. As such, diverticular disease in the right-side colon is more prevalent in Japan than in Western countries. Against this background, concern is growing about the management of colonic diverticular disease in Japan and there is currently no practice guideline available. To address this situation, the Japanese Gastroenterological Association decided to create a clinical guideline for colonic diverticular bleeding and colonic diverticulitis in collaboration with the Japanese Society of Gastroenterology, Japan Gastroenterological Endoscopy Society, and Japanese Society of Interventional Radiology. The steps taken to establish this guideline involved incorporating the concept of the GRADE system for rating clinical guidelines, developing clinical questions (CQs), accumulating evidence through a literature search and review, and developing the Statement and Explanation sections. This guideline includes 2CQs for colonic diverticulosis, 24 CQs for colonic diverticular bleeding, and 17 CQs for diverticulitis.

Role of hemostatic powders in the management of lower gastrointestinal bleeding: A review.

Despite the recent advances in endoscopic hemostatic techniques, the management of lower gastrointestinal bleeding could be sometimes challenging. Hemostatic powders such as Hemospray, EndoClot, and Ankaferd Blood Stopper have found their way into digestive endoscopy and are licenced in many countries especially for use in upper gastrointestinal bleeding. We reviewed the literature on the use of these hemostatic powders in different situations in lower gastrointestinal bleeding and looked at the success rate and rebleeding rate. Most of the data are derived from case reports, retrospective and prospective case series with absence of any randomized controlled trials. Hemostatic powders were used as primary or salvage therapy to control bleeding from polypectomy site, colonic tumors, diverticula, arteriovenous malformations, radiation proctitis, ischemic colitis, and surgical intestinal anastomosis. The rate of immediate control of bleeding is in the range of 88-100% with a recurrence rate of 3-13% except for radiation proctitis bleeding where rebleeding rate can be as high as 77%. Although there are many advantages for the use of local hemostatic agents in lower gastrointestinal bleeding, future randomized controlled trials comparing them with conventional methods are needed.

Acute Severe Gastrointestinal Tract Bleeding Is Associated With an Increased Risk of Thromboembolism and Death.

BACKGROUND & AIMS: We performed a retrospective cohort study of patients with and without gastrointestinal bleeding (GIB) to determine whether GIB increases the risks of thromboembolism and death. METHODS: We collected data from 522 patients with acute severe GIB and 1044 patients without GIB (control subjects, matched for age, sex, year of diagnosis, history of thromboembolism, and use of antithrombotic drugs) who underwent endoscopy at the National Center for Global Health and Medicine in Japan from January 2009 through December 2014. Hazard ratios of GIB for thromboembolism and mortality risk were estimated, adjusting for confounders. We also compared standardized mortality ratios between the GIB cohort and the age- and sex-matched general population in Japan. RESULTS: During a mean follow up of 23.7 months, thromboembolism was identified in 11.5% of patients with GIB and 2.4% of control subjects (hazard ratio, 5.3; 95% confidence interval, 3.3-8.5; P < .001). Multivariate analysis revealed GIB as a risk factor for all-thromboembolic events, cerebrovascular events, and cardiovascular events. During a mean follow-up of 24.6 months, 15.9% of patients with GIB and 8.6% of control subjects died (hazard ratio, 2.1; 95% confidence interval, 1.6-2.9; P < .001). Multivariate analysis revealed GIB as a risk factor for all-cause mortality. Compared with the general population, patients with GIB were at increased risk of death (standardized mortality ratio, 12.0). CONCLUSIONS: In a retrospective analysis of patients undergoing endoscopy in Japan, we identified acute GIB was a significant risk factor for late thromboembolism and death, compared with patients without GIB. GIB also increased risk of death compared with the general population.

Application of magnetic resonance enterography and ectopic gastric mucosa imaging in children with lower gastrointestinal hemorrhage / 中华实用儿科临床杂志

Objective To evaluate the diagnostic value of magnetic resonance enterography(MRE)and ectopic gastric mucosa imaging(EGMI)in children with lower gastrointestinal hemorrhage.Methods The clinical data including gender,age,amount of bleeding and preoperative minimum hemoglobin(Hb)levels of 54 children with lower gastrointestinal hemorrhage were collected,who received surgical exploration in Department of Pediatric Surgery,Anhui Provincial Children's Hospital between February 2014 and April 2016.Children were divided into lesion group and non-lesion group according to the findings of surgical exploration.Lesion group were defined as children with Meckel's diverticulum(MD)or duplication of the small intestine by surgery and postoperative pathological findings.A total of 36 cases,25 cases of boys,11 cases of girls,aged(2.86±1.59)years old.Non-lesion group were defined as children,who underwent operation with negative result or with lesions but not MD or duplication of the small intestine.A total of 18 cases,14 cases of boys,4 cases of girls,aged(3.87±1.62)years old.MRE and EGMI were performed when the children stopped bleeding,before the inspection,should fasting for 4-6 h.SPSS 13.0 software was used for statistical processing.The evaluation of EGMI,MRE and the both in diagnosing MD or duplication of the small intestine were conducted by receiver operating characteristic curve(ROC).According to the principles of biggest gain best diagnostic value by Youden index,and the degree of sensitivity and specificity was calculated at this time,P0.05).There were statistically significant differences in age,amount of bleeding and preoperative minimum hemoglobin levels(t=2.179,2.027,2.222,all P<0.05).There were statistically significant differences in classification comparison by EGMI and MRE between 2 groups(x2=15.226,29.121,all P<0.01).The optimal cut-off value of EGMI and MRE in the diagnosis of enteric malformation was more than level 3,and the suspected positive and being positive value was assigned as positive results.According to the cut-off value above,EGMI,MRE and EGMI plus MRE in series and in parallel in the diagnosis of enteric malformation,the areas under curves(AUC)were 0.809,0.917,0.750 and 0.847,respectively.The sensitivity was 61.1％,75.0％,55.6％and 80.6％,respectively.The specificity was 90.4％,94.4％,94.4％and 88.9％,respectively.The Youden's indexes were 0.515,0.694,0.500 and 0.695,respectively.The optimal cut-off value of age and preoperative minimum hemoglobin levels in the diagnosis of enteric malformation were 2.92 years and 80 g/L,respectively.The AUC was 0.761 and 0.672.The Youden's indexes were 0.515 and 0.333.There was no significant differences statistically in AUC compared with age,MRE and EGMI(all P<0.05).Conclusions The high diagnostic value in children with lower gastrointestinal hemorrhage is found by using MRE and EGMI.Then,MRE as a separate diagnosis method is also worthy of clinical application.

Ultraselective embolization using a 1.7-Fr catheter and soft bare coil for small intestinal bleeding.

OBJECTIVE: We aimed to evaluate the safety and efficacy of embolization using a 1.7-Fr catheter and soft bare coil to treat acute small intestinal bleeding. MATERIAL AND METHODS: Subjects were five consecutive patients who experienced onset of melena with small intestinal bleeding and underwent transcatheter arterial embolization with 1.7-Fr catheters and 0.010-inch detachable bare coils (five procedures in total). Technical success, clinical success, relative post-procedural complications, arterial bleeding source and cause, and relationship between coagulopathy and embolization efficacy were examined by capsule endoscopy. RESULTS: We achieved 100% technical and clinical success for the five transcatheter arterial embolizations. All catheterizations of the vasa recta of the bleeding artery (jejunal artery, n = 2; ileal artery, n = 3) were possible with a 1.7-Fr catheter. We achieved high embolization efficacy in two patients with coagulopathy. No rebleeding, intestinal ischemia, or necrosis was observed on follow-up capsule endoscopy. We confirmed that peptic ulcers/ulcer scars were the cause of bleeding for all patients. CONCLUSION: Embolization with 0.010-inch coils using a 1.7-Fr catheter and catheterization of the vasa recta of bleeding vessels was effective and safe for treating small intestinal bleeding.

Development and Validation of a Risk Scoring System for Severe Acute Lower Gastrointestinal Bleeding.

BACKGROUND & AIMS: We aimed to develop and validate a risk scoring system to determine the risk of severe lower gastrointestinal bleeding (LGIB) and predict patient outcomes. METHODS: We first performed a retrospective analysis of data from 439 patients emergently hospitalized for acute LGIB at the National Center for Global Health and Medicine in Japan, from January 2009 through December 2013. We used data on comorbidities, medication, presenting symptoms, and vital signs, and laboratory test results to develop a scoring system for severe LGIB (defined as continuous and/or recurrent bleeding). We validated the risk score in a prospective study of 161 patients with acute LGIB admitted to the same center from April 2014 through April 2015. We assessed the system's accuracy in predicting patient outcome using area under the receiver operating characteristics curve (AUC) analysis. All patients underwent colonoscopy. RESULTS: In the first study, 29% of the patients developed severe LGIB. We devised a risk scoring system based on nonsteroidal anti-inflammatory drugs use, no diarrhea, no abdominal tenderness, blood pressure of 100 mm Hg or lower, antiplatelet drugs use, albumin level less than 3.0 g/dL, disease scores of 2 or higher, and syncope (NOBLADS), which all were independent correlates of severe LGIB. Severe LGIB developed in 75.7% of patients with scores of 5 or higher compared with 2% of patients without any of the factors correlated with severe LGIB (P < .001). The NOBLADS score determined the severity of LGIB with an AUC value of 0.77. In the validation (second) study, severe LGIB developed in 35% of patients; the NOBLADS score predicted the severity of LGIB with an AUC value of 0.76. Higher NOBLADS scores were associated with a requirement for blood transfusion, longer hospital stay, and intervention (P < .05 for trend). CONCLUSIONS: We developed and validated a scoring system for risk of severe LGIB based on 8 factors (NOBLADS score). The system also determined the risk for blood transfusion, longer hospital stay, and intervention. It might be used in decision making regarding intervention and management.

Safety and Effectiveness of Early Colonoscopy in Management of Acute Lower Gastrointestinal Bleeding on the Basis of Propensity Score Matching Analysis.

BACKGROUND & AIMS: We investigated the safety and effectiveness of early colonoscopy (performed within 24 hours of hospital admission) for acute lower gastrointestinal bleeding (LGIB) vs elective colonoscopy (performed 24 hours after admission). METHODS: We conducted a retrospective study by using a database of endoscopies performed at the National Center for Global Health and Medicine in Tokyo, Japan from January 2009 through December 2014. We analyzed data from 538 patients emergently hospitalized for acute LGIB. We used propensity score matching to adjust for differences between patients who underwent early colonoscopy vs elective colonoscopy. Outcomes included rates of adverse events during bowel preparation and colonoscopy procedures, stigmata of recent hemorrhage, endoscopic therapy, blood transfusion requirement, 30-day rebleeding and mortality, and length of hospital stay. RESULTS: We selected 163 pairs of patients for analysis on the basis of propensity matching. We observed no significant differences between the early and elective colonoscopy groups in bowel preparation-related rates of adverse events (1.8% vs 1.2%, P = .652), colonoscopy-related rates of adverse events (none in either group), blood transfusion requirement (27.6% vs 27.6%, P = 1.000), or mortality (1.2% vs 0, P = .156). The early colonoscopy group had higher rates than the elective group for stigmata of recent hemorrhage (26.4% vs 9.2%, P < .001) and endoscopic therapy (25.8% vs 8.6%, P < .001), including clipping (17.8% vs 4.9%, P < .001), band ligation (6.1% vs 1.8%, P = .048), and rebleeding (13.5% vs 7.4%, P = .070). Patients in the early colonoscopy group stayed in the hospital for a shorter mean time (10 days) than patients in the elective colonoscopy group (13 days) (P < .001). CONCLUSIONS: Early colonoscopy for patients with acute LGIB is safe, allows for endoscopic therapy because it identifies the bleeding source, and reduces hospital stay. However, compared with elective colonoscopy, early colonoscopy does not reduce mortality and may increase the risk for rebleeding.

Risk factors for adverse in-hospital outcomes in acute colonic diverticular hemorrhage.

AIM: To investigate the factors associated with transfusion, further bleeding, and prolonged length of stay. METHODS: In total, 153 patients emergently hospitalized for diverticular bleeding who were examined by colonoscopy were prospectively enrolled. Patients in whom the bleeding source was identified received endoscopic treatment such as clipping or endoscopic ligation. After spontaneous cessation of bleeding with conservative treatment or hemostasis with endoscopic treatment, all patients were started on a liquid food diet and gradually progressed to a solid diet over 3 d, and were discharged. At enrollment, we assessed smoking, alcohol, medications [non-steroidal anti-inflammatory drugs (NSAIDs)], low-dose aspirin, and other antiplatelets, warfarin, acetaminophen, and oral corticosteroids), and co-morbidities [hypertension, diabetes mellitus, dyslipidemia, cerebro-cardiovascular disease, chronic liver disease, and chronic kidney disease (CKD)]. The in-hospital outcomes were need for transfusion, further bleeding after spontaneous cessation of hemorrhage, and length of hospital stay. The odds ratio (OR) for transfusion need, further bleeding, and prolonged length of stay were estimated by logistic regression analysis. RESULTS: No patients required angiographic embolization or surgery. Stigmata of bleeding occurred in 18% of patients (27/153) and was treated by endoscopic procedures. During hospitalization, 40 patients (26%) received a median of 6 units of packed red blood cells. Multivariate analysis revealed that female sex (OR = 2.5, P = 0.02), warfarin use (OR = 9.3, P < 0.01), and CKD (OR = 5.9, P < 0.01) were independent risk factors for transfusion need. During hospitalization, 6 patients (3.9%) experienced further bleeding, and NSAID use (OR = 5.9, P = 0.04) and stigmata of bleeding (OR = 11, P < 0.01) were significant risk factors. Median length of hospital stay was 8 d. Multivariate analysis revealed that age > 70 years (OR = 2.1, P = 0.04) and NSAID use (OR = 2.7, P = 0.03) were independent risk factors for prolonged hospitalization (≥ 8 d). CONCLUSION: In colonic diverticular bleeding, female sex, warfarin, and CKD increased the risk of transfusion requirement, while advanced age and NSAID increased the risk of prolonged hospitalization.

Role of urgent contrast-enhanced multidetector computed tomography for acute lower gastrointestinal bleeding in patients undergoing early colonoscopy.

BACKGROUND: The clinical significance of performing computed tomography (CT) for acute lower gastrointestinal bleeding (LGIB) remains unknown. This study aimed to evaluate the role of urgent CT in acute LGIB settings. METHODS: The cohort comprised 223 patients emergently hospitalized for LGIB who underwent early colonoscopy within 24 h of arriving at the hospital, including 126 who underwent CT within 3 h of arrival. We compared the bleeding source rate between two strategies: early colonoscopy following urgent CT or early colonoscopy alone. RESULTS: No significant differences in age, sex, comorbidities, vital signs, or laboratory data were observed between the strategies. The detection rate was higher with colonoscopy following CT for vascular lesions (35.7 vs. 20.6%, p = 0.01), leading to more endoscopic therapies (34.9 vs. 13.4%, p < 0.01). Of the 126 who underwent colonoscopy following CT, 26 (20.6%) had extravasation and 34 (27.0%) had nonvascular findings. The sensitivity and specificity of CT extravasation and nonvascular findings for predicting vascular lesions and inflammation or tumors were 37.8 and 88.9 and 81.3 and 80.9%, respectively. A high κ agreement (0.83, p < 0.01) for active bleeding locations was found between CT and subsequent colonoscopy. There were no cases of contrast-induced nephropathy after 1 week of CT. CONCLUSIONS: Urgent CT before colonoscopy had about 15% additional value for detecting vascular lesion compared to colonoscopy alone and thus enabled subsequent endoscopic therapies. Contrast-enhanced CT in acute LGIB settings was safe and correctly identified the presence and location of active bleeding, as well as severe inflammation or tumor stenosis, facilitating decision making.

Massive gastrointestinal hemorrhage secondary to typhoid colitis: A case report and literature review.

We present a case of massive lower gastrointestinal hemorrhage secondary to Salmonella enterica subtype Typhi (S. Typhi) colitis, in a 29 year-old female treated for S. Typhi bacteremia. One week post-treatment, she unexpectedly developed a large volume of rectal bleeding. Endoscopy showed colonic ulcers and ileitis, but no endoscopic hemostasis was required. Treatment was supportive with transfusions and a prolonged course of antimicrobials, with the bleeding stopping spontaneously. This case illustrates the phenomenon of delayed lower gastrointestinal hemorrhage, as a rare complication of S. Typhi infection.

Recurrence and mortality among patients hospitalized for acute lower gastrointestinal bleeding.

BACKGROUND & AIMS: The long-term recurrence of lower gastrointestinal bleeding (LGIB) and associated mortality have not been studied extensively. We investigated rates of recurrence of LGIB, mortality, and associated risk factors. METHODS: In a retrospective study, we analyzed data from 342 patients hospitalized for overt LGIB at the National Center for Global Health and Medicine in Japan from December 2004 through June 2013. All patients underwent colonoscopy. We assessed Charlson comorbidity index scores and the use of nonsteroidal anti-inflammatory drugs, low-dose aspirin, other antiplatelet drugs, or warfarin. Rebleeding, the total number of rebleeding episodes, and mortality were measured. The Cox proportional hazards model was used to estimate hazard ratios (HRs). RESULTS: Rebleeding occurred in 84 patients, at a mean follow-up time of 19 months. The cumulative percentages of patients with rebleeding at 1 and 5 years were 19% and 46%, respectively. During the follow-up period, 29 patients (39%) had secondary rebleeding and 18 patients (62%) had subsequent rebleeding. Multivariate analysis showed age 65 years and older (HR, 1.7; P = .04) and the use of nonsteroidal anti-inflammatory drugs (HR, 2.0; P < .01) and nonaspirin antiplatelet drugs (HR, 1.8; P < .05) as independent risk factors for rebleeding. Dual therapy had a higher risk than single therapy (adjusted HR, 1.8; P < .05). During the mean follow-up period of 28 months, 21 patients died (2 from bleeding). Cumulative mortality rates at 1 and 5 years were 4.2% and 13%, respectively. Mortality was associated significantly with age ≥65 years (P < .05), Charlson comorbidity index score, and warfarin use. CONCLUSIONS: Based on a retrospective analysis of patients with LGIB, 46% of all patients have rebleeding, and the overall mortality rate is 13% within 5 years after hospitalization. Besides age ≥65 years, use of antithrombotic drugs increases the risk of bleeding recurrence and mortality among patients with LGIB.