Management of the adult patient with acute lower gastrointestinal bleeding. American College of Gastroenterology. Practice Parameters Committee

Massive gastrointestinal hemorrhage as a complication of the Flexi-Seal fecal management system

Use of the Flexi-Seal fecal management system, a safe and effective means of fecal diversion in patients with fecal incontinence and diarrhea, can be associated with rare, life-threatening complications. For example, a critically ill patient had 2 episodes of massive rectal bleeding associated with use of the system that required transfusion of blood products. Hemorrhage was controlled during the first episode by angiography with selective coil embolization; the second required colonoscopy with suture ligation of the affected lesion. A literature review revealed 9 other cases that were managed endoscopically, surgically, or with angiography. Although none of the patients died, they experienced obvious complications that required transfusion of blood products, endoscopy, surgery, use of conscious sedation or general anesthesia, angiography, and exposure to intravenous contrast material. Patients receiving therapeutic doses of anticoagulation and antiplatelet drugs, which may precipitate or aggravate hemorrhaging, are particularly at risk for complications with the Flexi-Seal system.

Incidental detection of a bleeding gastrointestinal stromal tumor on Tc-99m red blood cell scintigraphy

The role of 99m-technetium labeled red blood cell (RBC) scintigraphy in acute gastro-intestinal bleed is well-established. The authors report a case of a bleeding gastrointestinal stromal tumor (GIST) incidentally discovered on Tc-99m RBC scintigraphy.

Technetium-labeled erythrocyte scintigraphy in acute gastrointestinal bleeding

PURPOSE

Optimal management of acute gastrointestinal (GI) bleeding requires accurate localization of the bleeding source. The role of technetium-labeled erythrocyte scintigraphy (tagged red blood cell (TRBC) scan) in evaluating acute GI bleeding has been controversial, though recent literature suggests that it is a reliable tool and may be used as a first-line diagnostic test. We evaluated our recent experience with and the clinical outcomes of the TRBC scan in patients presenting with acute GI bleeding.

METHODS

A retrospective study of 100 consecutive TRBC scans performed between April 2006 and January 2009 was conducted. Medical records of each corresponding patient were queried for pertinent data. Twenty TRBC scans performed for occult GI bleeding or >48 h after hospital admission were excluded.

RESULTS

Of the 80 TRBC scans, 29 (36%) were positive and 51 (64%) were negative for bleeding. Eight (10%) were incorrect positive (leading to five incorrect operations), 12 (15%) true positive, 9 (11%) unconfirmed positive, 17 (21%) false negative, and 34 (43%) unconfirmed negative. The cause of bleeding was confirmed in 31 cases, of which the scan result was incorrect positive in 2 (7%), true positive in 12 (39%), and false negative in 17 (55%).

CONCLUSIONS

TRBC scans have low positive yield as well as high incorrect positive and high false negative rates in patients with acute GI bleeding. Further research is needed to improve scan technique, refine patient selection, and determine in what setting TRBC scanning may be more clinically useful.

An Unusual Appearance of Meckel′s Diverticulum as a Site of Bleed on Gastrointestinal Bleeding Scan

Lower gastrointestinal (GI) hemorrhage is a frequently encountered and challenging clinical problem. GI bleeding scans are extremely useful for localizing the source of GI bleeding before interventional radiology procedures. It is essential that physicians understand the numerous possible pitfalls when interpreting these scans. Understanding the potential causes of false-positive scan interpretation eliminates unnecessary procedures for the patient and minimizes costs. We report a rare case of an 8-year-old boy who presented with GI bleeding. Upper and lower GI endoscopy did not reveal a source of bleeding. We emphasize case of Meckel's diverticulum appearing as a proximal jejunum false-positive site of bleed on bleeding scan. In addition, we reinforce the criteria needed for diagnosis of GI bleeding site on the nuclear bleeding scan. A high index of suspicion is the most important diagnostic aid that can prevent the nuclear medicine physicians from misdiagnosing the site of lower GI hemorrhage.

Transarterial embolization in acute colonic bleeding: review of 11 years of experience and long-term results

BACKGROUND

Lower gastrointestinal bleeding represents 20 % of all gastrointestinal bleedings. Interventional radiology has transformed the treatment of this pathology, but the long-term outcome after selective embolization has been poorly evaluated. The aim of this study is thus to evaluate the short-term and long-term outcomes after selective embolization for colonic bleeding.

METHODS

From November 1998 to December 2010, all acute colonic embolizations for hemorrhage were retrospectively reviewed and analyzed. The risk factors for post-embolization ischemia were also assessed.

RESULTS

Twenty-four patients underwent colonic embolization. There were 6 men and 18 women with a median age of 80 years (range, 42-94 years). The underlying etiologies included diverticular disease (41.9 %), post-polypectomy bleeding (16.7 %), malignancy (8.2 %), hemorrhoid (4.1 %), and angiodysplasia (4.1 %). In 23 patients, bleeding stopped (95.8 %) after selective embolization. One patient presented a recurrence of bleeding with hemorrhagic shock and required urgent hemorrhoidal ligature. Four patients required an emergent surgical procedure because of an ischemic event (16.7 %). One patient died of ileal ischemia (mortality, 4.1 %). The level of embolization and the length of hypoperfused colon after embolization were the only risk factors for emergent operation. Mean hospital stay was 18 days (range, 9-44 days). After a mean follow-up of 28.6 months (range, 4-108 months), no other ischemic events occurred.

CONCLUSION

In our series, selective transarterial embolization for acute colonic bleeding was clinically effective with a 21 % risk of bowel ischemia. The level of embolization and the length of the hypoperfused colon after embolization should be taken into consideration for emergent operation.

Portal hypertensive colopathy and haematochezia in cirrhotic patients: an endoscopic study

BACKGROUND AND STUDY AIMS

In patients with liver cirrhosis, portal hypertensive colopathy (PHC) and anorectal varices (ARVs) are thought to cause lower gastrointestinal (GI) bleeding. In the present work, we studied the diagnostic yield of colonoscopy in cirrhotic patients and haematochezia.

PATIENTS AND METHODS

The current study was conducted on 77 consecutive cirrhotic patients who underwent colonoscopy at Mansoura Emergency Hospital, Egypt, between May 2007 and May 2011. Following rapid evaluation and adequate resuscitation, a thorough history was obtained with complete physical examination including digital rectal examination and routine laboratory investigations. Colonoscopic evaluation was performed for the included patients by recording endoscopic abnormalities and obtaining biopsies from lesions.

RESULTS

There was no significant difference between the PHC-positive group when compared with the PHC-negative group regarding patients' age, sex, severity of haematochezia, positive family history and the history of intake of non-steroidal anti-inflammatory drugs (NSAIDs). Significant difference was noted regarding the Child-Pugh class (p<0.05), history of splenectomy (p<0.05), prior history of endoscopic sclerotherapy (EST) or endoscopic variceal ligation (EVL) (p<0.05), prior history of upper gut bleeding (p<0.05), the presence of gastric varices (GVs) (p<0.05), presence of portal hypertensive gastropathy (PHG) (p<0.05), presence of haemorrhoids (p<0.05) and rectal varices (<0.05) and therapy with β-blockers (p<0.05). Regarding the laboratory parameters, the platelet count only was markedly reduced in the PHC-positive group (p<0.05). All the PHC-related sources of bleeding (7/32 cases (21.87%)) were successfully managed with argon plasma coagulation. Regarding the laboratory parameters, the platelet count only was markedly reduced in the PHC-positive group (p<0.05). All the PHC-related sources of bleeding (7/32 cases (21.87%)) were successfully managed with argon plasma coagulation.

CONCLUSION

Our data revealed that it is not only PHC which is involved in haematochezia in cirrhotic patients despite the significant association. Instead, a high prevalence of inflammatory lesions came on the top of the list. Complete colonoscopy is highly advocated to detect probable proximal neoplastic lesions.

Lower gastrointestinal bleeding in chronic hemodialysis patients

Gastrointestinal (GI) bleeding is more common in patients with chronic kidney disease and is associated with higher mortality than in the general population. Blood losses in this patient population can be quite severe at times and it is important to differentiate anemia of chronic diseases from anemia due to GI bleeding. We review the literature on common causes of lower gastrointestinal bleeding (LGI) in chronic kidney disease (CKD) and end-stage renal disease (ESRD) patients. We suggest an approach to diagnosis and management of this problem.

Surgical management of lower gastrointestinal bleeding

PURPOSE

Lower gastrointestinal bleeding (LGIB) is any form of bleeding distal to the Ligament of Treitz. In most cases, acute LGIB is self-limited and resolves spontaneously with conservative management.

METHODS

Only a minority of approximately 10% is admitted to hospital with signs of massive bleeding and shock requiring resuscitation, urgent evaluation and treatment.

RESULTS

Over the past decade, there has been a progressive decrease in upper GI events and a significant increase in lower GI events. Overall, mortality has also decreased, but in-hospital fatality due to upper or lower GI complications have remained constant. The problem is that LGIB can arise from a number of sources and may be a significant cause of hospitalisation and mortality in elderly patients.

CONCLUSIONS

After initial resuscitation, the diagnosis and treatment of LGIB remains a challenge for acute care surgeons, whereby the identification of the source of bleeding is of utmost importance.

Epidemiology of lower gastrointestinal bleeding in China: single-center series and systematic analysis of Chinese literature with 53,951 patients

OBJECTIVES

The epidemiology of lower gastrointestinal bleeding (LGIB) in Western populations has been reported; however, there are scant Asian reports. The aim of the present study was to determine the etiology of LGIB in a Chinese population by reporting a retrospective case series and a systematic analysis of Chinese literature.

METHODS

A large colonoscopy database in a tertiary endoscopic center was searched to identify all patients with the indication of LGIB. The data, including patients' sex, age, endoscopic and pathological findings, were collected and analyzed. A comprehensive database search of the Chinese literature was carried out to obtain all relevant studies.

RESULTS

In our series, a total of 720 patients with LGIB were included. There were 425 males and 295 females with a median age of 50 years, the most common etiologies of LGIB were inflammatory bowel disease (IBD; 30.2%), polyps (23.4%) and cancer (10.7%). In 30.2% of all the patients, no obvious causes were identified. A systematic analysis of Chinese literature found an additional 160 studies providing relevant data in 53,951 patients. Overall, colorectal cancer (24.4%), colorectal polyps (24.1%), colitis (16.8%), anorectal disease (9.8%) and IBD (9.5%) were the most common etiologies of LGIB. The main etiologies were different between adults, the elderly and children.

CONCLUSION

The study shows colorectal cancer, colorectal polyps, colitis, anorectal disease and IBD were the most common etiologies of LGIB in the Chinese adult and elderly population, whereas colorectal polyps, chronic colitis and intussusception were the main causes of LGIB in Chinese children. Whereas diverticulum, the most common cause of LGIB in Western populations, is uncommon in China.

[Surgical intervention in acute upper gastrointestinal bleeding]

BACKGROUND AND PURPOSE

Acute gastrointestinal bleeding (AGIB) requiring transfusion and surgical treatment still constitutes a life-threatening situation. The purpose of this paper was to examine the treatment outcome for this group of patients as a function of various risk factors and to present our diagnostic and therapeutic regime.

METHODS

A retrospective analysis of data from 154 patients with AGIB who underwent surgical procedures and received massive transfusions in a university hospital between 1999 and 2008 was carried out.

RESULTS

The patients were divided into two groups. Group I include 91 patients with acute upper gastrointestinal bleeding and group II included 63 patients with lower gastrointestinal bleeding. The average age was 67 years (range 29-93 years) in group I and 70 years (39-97 years) in group II. The initial hemoglobin level was 8.4 g/dl in group I and 10.5 g/dl in group II. Univariate analysis of mortality revealed the following significant risk factors for group I: postoperative need for ventilation (p=0.007), prolonged ICU stay (p=0.004) and anticoagulants in the medical history. The risk factors in group II were blood transfusions >10 units (p=0.031), postoperative need for ventilation (p=0.004), necessary reoperations (p=0.016) and an initial hemoglobin level <8.0 g/dl (p=0.043). The complication rate was 76.9% (mortality rate 34.1%) in group I and 60.3% (mortality rate 15.9%) in group II.

CONCLUSIONS

Examination and stabilization of the patient is directly followed by diagnostic localization. The indication for surgery is mainly limited to peracute, uncontrollable and recurrent forms of gastrointestinal bleeding. The mortality rate for these critically ill, negatively selected patients remains high and could not be lowered in the last decade. Postoperative need of ventilation is a predictor for poor prognosis.

Natural history of acute colonic diverticular bleeding: a prospective study in 133 consecutive patients

BACKGROUND

Bleeding recurrence rate after spontaneous haemostasis of colonic diverticular haemorrhage varies in the literature, and a small minority of patients will require endoscopic, radiological or surgical intervention.

AIM

To study the natural history of colonic diverticular bleeding in consecutive patients.

METHODS

We studied prospectively consecutive patients admitted for colonic diverticular bleeding from 1997 to 2005. Data on age, gender, 30-day mortality, therapeutic modality for bleeding management and subsequent rebleeding were collected.

RESULTS

One hundred and thirty-three patients (mean age 75.7 years) were recruited. Bleeding stopped spontaneously in 123 patients (92.4%). A more interventional approach was necessary in 10 patients. Thirty-day mortality rate for first bleeding was 2.25%. Out of the 123 patients managed conservatively and submitted to an average follow-up of 47.5 months, 17 (13.8%) presented at least one recurrent diverticular bleeding. Spontaneous haemostasis was obtained in all recurrent cases except one, who died. The estimated bleeding recurrence rate was 3.8% at 1 year, 6.9% at 5 years and 9.8% at 10 years.

CONCLUSIONS

The low estimated rebleeding rate and the fact that rebleeding can be treated conservatively in most cases suggest that an aggressive approach with intervention is not justified.

Nonoperative management of complicated diverticular disease

The complications of diverticular disease of the colon can be divided into those related to inflammatory conditions (diverticular abscess, fistula, and perforation) and those related to noninflammatory conditions (lower gastrointestinal hemorrhage and noninflammatory stricture or obstruction). Nonoperative management of uncomplicated diverticulitis includes bowel rest and antibiotics. For abscesses, percutaneous drainage by radiologic guidance often turns complicated diverticulitis to an uncomplicated condition. In very select instances, fistulas or even perforation may be managed without operation. Strictures may be dilated or stented. Diverticular hemorrhage may be controlled with colonoscopic and angiographic techniques. For colonoscopy, these include cautery, epinephrine injection, and endoclips. For angiography, these include arterial infusion of vasopressin and selective embolization of bleeding vessels. For both diverticulitis and diverticular bleeding, these nonoperative therapeutic modalities may be utilized as a bridge to surgery, or in select instances as a definitive therapy obviating the need for surgery.

Lower gastrointestinal bleeding in the elderly

Lower gastrointestinal bleeding (LGIB) is an important worldwide cause of morbidity and mortality in the elderly. The incidence of LGIB increases with age and corresponds to the increased incidence of specific gastrointestinal diseases that have worldwide regional variation, co-morbid diseases and polypharmacy. The evaluation and treatment of patients is adjusted to the rate and severity of hemorrhage and the clinical status of the patient and may be complicated by the presence of visual, auditory and cognitive impairment due to age and co-morbid disease. Bleeding may be chronic and mild or severe and life threatening, requiring endoscopic, radiologic or surgical intervention. Colonoscopy provides the best method for evaluation and treatment of patients with LGIB. There will be a successful outcome of LGIB in the majority of elderly patients with appropriate evaluation and management.

The role of colonoscopy and radiological procedures in the management of acute lower intestinal bleeding

There are multiple strategies for evaluating and treating lower intestinal bleeding (LIB). Colonoscopy has become the preferred initial test for most patients with LIB because of its diagnostic and therapeutic capabilities and its safety. However, few studies have directly compared colonoscopy with other techniques and there are controversies regarding the optimal timing of colonoscopy, the importance of colon preparation, the prevalence of stigmata of hemorrhage, and the efficacy of endoscopic hemostasis. Angiography, radionuclide scintigraphy, and multidetector computed tomography scanning are complementary modalities, but the requirement of active bleeding at the time of the examination limits their routine use. In addition, angiography can result in serious complications. This review summarizes the available evidence regarding colonoscopy and radiographic studies in the management of acute LIB.

Consensus and controversies in platelet transfusion

Platelet transfusion therapy is the standard of care for thrombocytopenic patients with hemato-oncological disorders and bone marrow failure states due to intensive chemoradiotherapy. Guidelines to lower triggers for prophylactic and therapeutic transfusions are being developed based on better levels of evidence. The optimum transfusion dose, the choice of platelet concentrate and transfusion interval pose a challenge to balance scientific advances with cost-effective strategies. Platelet refractoriness requires "matched" platelets and is a difficult to treat phenomenon. Pathogen inactivation is a crucial issue in view of susceptibility of platelet concentrates to bacterial contamination. This article reviews the current developments and challenges in optimizing platelet transfusion therapy.

Long-term outcome of transcatheter embolotherapy for acute lower gastrointestinal hemorrhage

OBJECTIVES

We sought to assess the safety, short- and long-term efficacy, and durability of transcatheter embolization for lower gastrointestinal hemorrhage (LGH) unresponsive to endoscopic therapy and to analyze the overall survival of the embolized patients.

METHODS

Between January 1997 and January 2008, 122 patients were referred for angiographic evaluation to control major LGH. Overall, 43 patients (35.3%) presented with angiographic signs of contrast extravasation. In 39 patients (26 men, 13 women; mean age 67.7 years), a transcatheter embolization was performed to stop the bleeding.

RESULTS

In all 39 patients, no contrast extravasation could be depicted on completion of angiography after embolization. Rebleeding occurred in eight patients (20%), in six of them within the first 30 days after embolization. Ischemic intestinal complications requiring surgery occurred in four patients (10%) within 24 h after embolization. Long-term follow-up depicted estimated survival rates of 70.6, 56.5, and 50.8% after 1, 3, and 5 years, respectively.

CONCLUSIONS

Transcatheter embolotherapy to treat lower gastrointestinal bleeding is very effective, with a relatively low rebleeding and ischemic complication rate, mostly occurring within the first month after the embolization. Long-term follow-up shows a very low late rebleeding rate, and half of the embolized patients survive more than 5 years. This study shows that the majority of patients presenting with lower gastrointestinal bleeding, unresponsive to endoscopic therapy, do not benefit from transcatheter embolization. In cases of angiography extravasation, a good immediate clinical outcome-defined as high immediate success with acceptable rebleeding-and ischemic complication rate may be obtained.

Superselective embolization for lower gastrointestinal hemorrhage: an institutional review over 7 years

INTRODUCTION

Superselective embolization of visceral arterial branches has become integral in the management of acute lower gastrointestinal (GI) hemorrhage. The present study aimed to evaluate the success of superselective embolization as a primary therapeutic modality in the control of lower GI hemorrhage and to identify factors associated with rebleeding and surgical intervention after the procedure.

METHODS

We performed a retrospective review of all cases of superselective embolization for acute lower GI bleeding during a 7-year period (December 2000-October 2007) in a single 1,300-bed hospital in Singapore. Hemostasis was achieved with microcoils, polyvinyl alcohol particles, gelfoam, or by selective vasopressin infusion. Various clinical and hematologic factors were analyzed against rebleeding and surgical intervention after the procedure.

RESULTS

A total of 265 patients underwent mesenteric angiography for GI hemorrhage. Superselective embolization of visceral vessels for lower GI hemorrhage was performed in 32 patients (12%) whose median age was 66 years (range: 34-82 years). The group was of similar gender distribution, and the median follow-up was 8 months (range: 1-32 months). Location was the small bowel in 19% and the colon in 81%. The underlying etiologies included diverticular disease (59%), angiodysplasia (19%), ulcers (19%), and malignancy (3%). In 31 patients (97%) technical success was achieved, with immediate cessation of hemorrhage in every case. Clinical success was achieved in 20 patients (63%), all of whom were discharged well with no further intervention. Seven patients rebled, and 9 underwent surgery: 1 for incomplete hemostasis, 4 for rebleeding, 1 for infarcted bowel postembolization, and 3 on the basis of the surgeon's decision. There were 2 anastomotic leaks; 1 after surgery for postembolization ischemia and 1 after surgery for rebleeding. Overall mortality in this series was 9%. Rebleeding was more likely to occur if the site of bleeding was located in the small bowel compared to the colon (OR: 8.33, 95% CI 1.03-66.67). It was also more likely in patients with a hematocrit level </=20.0% (OR: 7.52, 95% CI: 1.14-50.00) and a platelets level </=140 x 10(9)/l (OR: 9.35, 95% CI: 1.36-62.5) just before the procedure. Surgical resection was also more likely in patients with a hematocrit level </=20.0% just before embolization (OR: 12.66, 95% CI: 1.96-83.33), and it appeared to be more likely if the underlying cause was diverticular disease (OR 8.70, 95% CI: 0.93-83.33).

CONCLUSIONS

The use of superselective mesenteric embolization for the treatment of lower GI bleeding is highly successful and relatively safe-97% technical success and 3% postembolization ischemia in our series. In 63% of cases it is definitive without any further intervention. Postembolization ischemia and surgery may be associated with a higher risk of anastomotic leak. Greater vigilance must be adopted in treating patients who have active hemorrhage from the small bowel and in those with a hematocrit </=20.0%.

Risk and management of upper gastrointestinal bleeding associated with prolonged dual-antiplatelet therapy after percutaneous coronary intervention

Prolonged dual-antiplatelet therapy with aspirin and clopidogrel is mandatory after drug-eluting stent implantation because of the potential increased risk of late stent thrombosis. The concern regarding prolonged antiplatelet therapy is the increased risk of bleeding. Gastrointestinal bleeding is the most common site of bleeding and presents a serious threat to patients due to the competing risks of gastrointestinal hemorrhage and stent thrombosis. Currently, there are no guidelines and little evidence on how best to manage these patients who are at high risk of morbidity and mortality from both the bleeding itself and the consequences of achieving optimum hemostasis by interruption of antiplatelet therapy. Managing gastrointestinal bleeding in a patient who has undergone recent percutaneous coronary intervention requires balancing the risk of stent thrombosis against further catastrophic bleeding. Close combined management between gastroenterologist and cardiologist is advocated to optimize patient outcomes.

Colonic diverticular bleeding with comorbid diseases may need elective colectomy

BACKGROUND

Colonic diverticular bleeding can usually be managed with conservative treatment. However, in a selected group of patients under conditions of recurrent, persistent bleeding influencing quality of life or causing life-threatening shock, it should be managed with surgery. This is a retrospective study to clarify the risk factors relating to colectomy for colonic diverticular bleeding.

METHODS

Between 1997 and 2005, a retrospective chart review of 73 patients with colonic diverticular bleeding was undertaken. Univariate and multivariate logistic regression analyses were performed to identify the relevant risk factors correlating to colectomy.

RESULTS

The mean age of the 73 patients was 70 years (range, 22-90 years). Most colonic diverticular bleeding could be managed with conservative treatment (n = 63, 86.3%), and urgent colectomy was performed in ten patients (13.7%). The bleeding site could not be well identified in six of those ten patients and so underwent total abdominal colectomy with ileorectal anastomosis, and the other four underwent right hemicolectomy after a diagnosis of right-sided colon diverticula with bleeding. There were two deaths in the surgical group and one death in the nonsurgical group. The overall mortality rate in the series was 4.11% and 20% among patients undergoing urgent colectomy. Multiple logistic regression analysis showed that the presence of comorbidities and daily maximum blood transfusion requirement were risk factors for urgent colectomy for colonic diverticular bleeding.

CONCLUSION

Preoperative comorbid diseases may increase operative risk in urgent surgery, and the outcome is poor. To avoid high mortality and morbidity relating to the urgent colectomy, we suggest that patients of colonic diverticular bleeding with comorbid diseases, especially subgroups of patients with diabetes and gouty arthritis, may need early elective colectomy.

Video capsule endoscopy in life-threatening GI hemorrhage after negative primary endoscopy (with video)

BACKGROUND

Video capsule endoscopy (VCE) continues to evolve as a key diagnostic tool. Traditionally VCE has been used to detect occult and obscure GI bleeding in adult patients. VCE has not been documented or accepted as an early diagnostic tool for acute life-threatening GI hemorrhage.

OBJECTIVE

Our purpose was to demonstrate the use of VCE as an early diagnostic tool in acute life-threatening GI hemorrhage.

DESIGN

Case series.

PATIENTS

Patients with life-threatening GI hemorrhage.

INTERVENTIONS

VCE after negative primary endoscopy.

RESULTS

VCE allowed rapid diagnosis and reliable data before surgical intervention. Although proving to be a beneficial diagnostic tool for acute GI hemorrhage, VCE was not associated with increased morbidity or mortality rates.

LIMITATIONS

This report only focuses on cases where VCE successfully led to a diagnosis. There is no prospective control group to which these patients can be compared. There were no other attempted acute VCE studies in patients with life-threatening bleeding during the time period of these case reports.

CONCLUSIONS

The use of VCE is a simple and relatively safe diagnostic tool in the evaluation of continuing GI hemorrhaging in endoscopy-negative patients. The use of VCE can be considered as a another useful tool in the armamentarium of the endoscopist in the evaluation of GI bleeding. Prospective studies should be undertaken to determine the appropriate timing and clinical use in this group of patients.

Small bowel haemorrhage associated with partial midgut malrotation in a middle-aged man

We describe a case of life-threatening small bowel haemorrhage in a 56 year old man, who was found to have partial midgut malrotation at laparotomy. An association between congenital malrotation and gastrointestinal haemorrhage has not previously been reported in this age group. We discuss the association between gut malrotation and small intestinal pathology and describe the principles of management in these patients.

Surgical treatment concepts for acute lower gastrointestinal bleeding

BACKGROUND AND PURPOSE

To this day, the diagnostic and therapeutic strategy for acute lower gastrointestinal hemorrhage requiring transfusion varies among different hospitals. The purpose of this paper was to evaluate our own data on the group of patients presented and to outline our diagnostic and therapeutic regime taking into account the literature of the past 30 years.

METHODS

Following prospective data collection on 63 patients of a university hospital (40 male, 23 female patients) who received surgical intervention for acute lower intestinal hemorrhage requiring transfusion, we retrospectively analyzed the data. After a medical history had been taken, all patients underwent clinical examination, including digital palpation; 62 patients underwent procto-rectoscopy, 38 gastroscopy and colonoscopy, 52 patients colonoscopy only, and 45 patients gastroscopy only. Angiography was applied in 14 cases and scintigraphy in 20 cases.

RESULTS

Diagnostic procedures to localize hemorrhage were successful in 61 cases, 41 of which through endoscopy, 12 through angiography, and eight through scintigraphy. Of our group of patients, 32 suffered from a bleeding colonic diverticulum, eight from angiodysplasia, and five from bleeding small bowel diverticula. Five patients had inflammatory bowel disease and three neoplasia. Among the surgical interventions, segmental resections were performed most frequently (15 sigmoidectomies, 11 small bowel segmental resections, 11 left hemicolectomies, seven right hemicolectomies, one proctectomy). Subtotal colectomies were carried out in ten cases. The complication rate for this group of critically ill, negatively selected patients was 60.3% and the mortality rate was 15.9%.

CONCLUSIONS

Examination and stabilization of the patient is directly followed by diagnostic localization. Today, we primarily rely on nonsurgical control of hemorrhage by endoscopy or angiography; the indication for surgery is mainly limited to peracute, uncontrollable, and recurrent forms. In the case of surgery, intestinal segmental resection is recommended after identification of the lesion; if the localization of colonic hemorrhage is uncertain, subtotal resection is the method of choice. For stable patients with unverifiable small-bowel hemorrhage we recommend regular re-evaluation.

Videoanoscopy: useful technique in the evaluation of hemorrhoids

BACKGROUND AND AIM

Rigid proctoscopy, the gold standard for detecting hemorrhoids, has become a neglected procedure in the era of flexible endoscopy. Evaluation of hemorrhoids is often done with the retroflexed fiberoptic colonoscope. The aim of this study was to evaluate the technique of videoanoscopy in comparison with retroflexion of colonoscope in the rectum to detect hemorrhoids and to correlate objective findings of hemorrhoids and their relation to bleeding.

METHODS

In total, 544 patients were screened and 358 patients were evaluated by the technique of videoanoscopy and retroflexion of colonoscope in the rectum. The video images of both the procedures were independently analyzed by two observers for the presence or absence of hemorrhoids. The videoanoscopy images were also analyzed for number of columns of hemorrhoids, size and presence of red-color sign.

RESULTS

Videoanoscopy detected hemorrhoids in a significantly higher number of subjects when compared with retroflexion of colonoscope in the rectum by both observers (P < 0.05). The average kappa value was 0.637 and 0.779 for retroflexed colonoscopy and videoanoscopy, respectively. Red-color sign was present in 80.5% of patients with bleeding compared with only 30.3% in the non-bleeding group. The majority (71%) of patients in the bleeding group had larger hemorrhoids. Red-color sign and size of hemorrhoidal columns correlated with bleeding (P < 0.05).

CONCLUSION

Videoanoscopy is a simple technique with increased sensitivity to detect hemorrhoids compared with intrarectal retroflexion of colonoscope and yields valuable objective information about the presence and condition of hemorrhoids. It should be performed as an extension of standard colonoscopy.

Epidemiology of lower gastrointestinal bleeding

Lower GI bleeding is a very broad topic, which can encompass situations from a small amount of red blood on tissue paper associated with formed brown stool, to life-threatening severe haemorrhage. Much of the literature on this topic focuses on acute bleeding necessitating hospitalisation and urgent intervention. The literature that is available focuses primarily on medical intervention and support, which will be covered in another review in this series. Causes for lower GI bleeding include diverticular disease, vascular ectasia, ischemic, inflammatory or infectious colitis, colonic neoplasia (including post polypectomy bleeding), anorectal causes (including haemorrhoids, fissures and rectal varices), and small bowel lesions (Crohn's, vascular ectasia, Meckel's diverticula, and small bowel tumours). Different clinical series identified these lesions in varying frequencies. Factors associated with the development of acute lower GI bleeding include advanced age and use of non-steroidal anti-inflammatory medication. Colonoscopy is the single most frequent intervention in evaluating all the patients with lower GI bleeding. Determining the precise impact of colonoscopy on the outcome of lower GI bleeding is difficult due to the retrospective nature of many studies, and the frequent inability to definitively establish the exact bleeding site.

Management of lower gastrointestinal tract bleeding

Acute bleeding from the colon and rectum is less frequent and less dramatic than haemorrhage from the upper gastrointestinal tract. In most cases, bleeding from the colon and rectum is self-limiting and requires no specific therapy. Diverticula and angiectasias are the most frequent sources of bleeding. Malignancy, colitis (inflammatory bowel disease, non-steroidal anti-inflammatory drugs, and infectious colitis), ischaemia, anorectal disorders, postpolypectomy bleeding, and HIV-related problems are less frequent causes. The recurrence rate, especially in diverticular bleeding, is high. Resuscitation and haemodynamic stabilisation of the patient is the first step in the management of colonic bleeding. Urgent colonoscopy is the method of choice for diagnosis and therapy. By analogy with peptic ulcer bleeding, risk stratification using stigmata of haemorrhage is gaining more importance. Modern endoscopic techniques such as injection therapy, thermocoagulation and mechanical devices seem to be effective in achieving haemostasis and avoiding precarious surgery. Angiography and nuclear scintigraphy are reserved for those patients in whom colonoscopy is not possible or has repeatedly failed to localise the bleeding site.

Lower gastrointestinal bleeding

Lower gastrointestinal (GI) hemorrhage is a significant cause of morbidity and mortality, particularly in elderly patients. Lower endoscopic evaluation is established as the diagnostic procedure of choice in the setting of acute lower GI hemorrhage.

Lower gastrointestinal bleeding: a review

Lower gastrointestinal bleeding (LGIB) continues to be a problem for physicians. Acute LGIB is defined as bleeding that emanates from a source distal to the ligament of Treitz. Although 80% of all LGIB will stop spontaneously, the identification of the bleeding source remains challenging and rebleeding can occur in 25% of cases. Some patients with severe hematochezia require urgent attention to minimize further bleeding and complications. This article reviews the causes, diagnostic methods, and endoscopic treatment of LGIB.

Negative Endoskopie sowie Mehrzeilendetektor-CT bei Patienten mit akuter unterer Gastrointestinalblutung

PURPOSE

To evaluate the clinical use of (99m)Tc red blood cell imaging (RBC imaging) in patients presenting with acute lower gastrointestinal (GI) bleeding and negative endoscopy and multislice computed tomography (MSCT) findings.

PATIENTS AND METHODS

In 31 consecutive patients with acute lower GI bleeding in whom the endoscopy findings were negative or the procedure was not feasible, dual-phase MSCT of the abdomen was performed [collimation 4x1 mm (arterial phase), 4x2.5 mm (venous phase)]. MSCT was followed by a (99m)Tc red blood cell scan in patients in whom no active bleeding was visible by CT. Images were created within 24 h after administration of the tracer, depending on the clinical symptoms. The results of the imaging modalities were correlated with clinical course and surgical treatment.

RESULTS

In 20 of 31 patients MSCT showed no active bleeding and a (99m)Tc red blood cell scan was performed. In 8 of 20 patients RBC imaging was also negative. Of these eight patients five were stable and did not require further diagnostic work-up; in the other three bleeding persisted and these patients required surgical treatment. In 12 of 20 patients active bleeding was demonstrated using a (99m)Tc red blood cell scan. Of 12 patients with positive RBC scintigraphy findings, 8 underwent surgery, where the site of bleeding was confirmed.

CONCLUSION

In patients with acute lower GI bleeding with negative or nondiagnostic endoscopy or MSCT findings, (99m)Tc red blood cell imaging is a useful tool in an emergency algorithm, improving the overall bleeding detection rate.

Severe acute lower gastrointestinal bleeding: risk factors for morbidity and mortality

BACKGROUND

Many factors can cause morbidity and mortality in patients with severe acute lower gastrointestinal bleeding (LGIB). The objectives of this study are to analyze three aspects related to severe acute LGIB: (1) indications and prognostic factors for urgent surgery, (2) risk factors for morbidity and mortality, and (3) relapse rates.

PATIENTS AND METHODS

A retrospective cohort was collected between 1985 and 2002 in a tertiary referral center. One hundred seventy-one patients with severe acute LGIB were reviewed (LGIB is defined as frank rectal bleeding either with a hematocrit decrease >/=10 points or when a transfusion of at least three units of concentrated red blood cells is needed). The main outcome measures are: (1) indications for urgent surgery and results, (2) morbidity and mortality, and (3) relapse.

RESULTS

There were 158 (92%) stable patients, and in 61% of these, the bleeding was identified via colonoscopy. Bleeding was identified using urgent colonoscopy in a higher percentage of patients compared to delayed colonoscopy (68% versus 14%; p < 0.001). Urgent surgery was indicated in 24 (14%) patients, and the approach was peri-anal in 5 (21%) patients and abdominal in the rest. Local intestinal resection was performed on the 15 patients in which bleeding was identified, whereas a subtotal colectomy was performed on the remaining 4 patients. The presence of hypotension (p = 0.001; 35 versus 10%) and etiology of LGIB (p < 0.001) are prognostic factors of urgent surgery. Morbidity was 6.4%, and mortality was 4.7%. The only morbidity or mortality risk factors detected were the presence of associated comorbidities (p = 0.008) and the need for urgent surgery (p = 0.002). The most frequent etiology was diverticulosis (25%). After a mean follow-up of 132 +/- 75 months, bleeding relapsed in 30% of patients.

CONCLUSIONS

It is difficult to predict which patients are going to need urgent surgery in severe acute LGIB; only the presence of hypotension on arrival at the emergency ward would lead us to suspect a negative outcome for the hemorrhage. In severe acute LGIB, morbidity and mortality is high, and this is mainly due to the high level of associated comorbidity and the need for urgent surgery. It is necessary for strict hemodynamic monitoring of the patients at risk if we want to improve outcomes. The bleeding relapse rate is high in LGIB, although generally, it is not severe.

[Heyde's syndrome]

BACKGROUND

Heyde's syndrome implies an association of calcified aortic stenosis with the high gradient of pressure and angiodysplasic bleeding from the digestive tract. It has been proven that in patients with this syndrome, acquired form of von Willebrand type II A develops. Replacing of aortic valves by artificial ones brings about the spontaneous retreat of coagulation disorder, and the stoppage of the digestive tract bleeding.

CASE REPORT

We reported two patients with the Heyde's syndrome. In one of the patients the aortic valves were replaced by biologic valves, after which the digestive tract bleeding stopped, while the second patient was treated conservatively due to a high operation risk.

CONCLUSION

Patients with Heyde's syndrome are a complex multidisciplinary problem, thus their adequate treatment requires a team work in order to provide the most rational type of therapy for each patient separately.

[A surgical approach to acute intestinal bleeding]

The estimated incidence of lower gastrointestinal bleeding (LGIB) is 20/100,000 patients per year. Of these cases, 70-80% are minor or stop spontaneously and do not present as emergency hospital admissions. Colonoscopy and angiography detect 80-90% of major LGIB, and subsequent endoscopic intervention or embolisation can control approximately 70%. Emergency surgical intervention is required in haemodynamically unstable patients with persistent bleeding. The surgical treatment of choice is directed to resecting the bleeding bowel segment. Subtotal colectomy is performed in patients with colonic bleeding that can not exactly be localized. Segmental colon resection is often associated with rebleeding and not recommended in this situation. Primary anastomosis can usually be performed; elderly patients in reduced condition, however, are candidates for stoma. In case of persistent or recurrent bleeding and differentiation between intestinal and colonic bleeding fails, loop ileostomy may be performed. If the bleeding appears to originate from somewhere in the small bowel, an additional loop jejunostomy may be performed for specification. The mortality from acute LIGB is approximately 5% but increases with emergency surgery. Risk factors are age, comorbidity, and shock on admission.

[Management of rectorrhagia having uncertain origin]

Rectorrhagia is a very frequent reason for hospital and Primary Health Care medical visits. Its main problem is that it is made up of a very heterogeneous group of patients and a correct diagnosis is difficult to make. The main diagnostic test is the colonoscopy, and in severe cases, the arteriography. When these examinations do not provide the diagnosis, small intestine disease should be suspected. In most of the cases, rectorrhagia abates spontaneously or is controlled with conservative measures, and the subsequent treatment with depend on the etiology that caused the bleeding. The great problem arises in 0.5%-4% of rectorrhagies that do not abate and unstabilize the patient, emergency surgery due to the bleeding being required.

Treatment of gastrointestinal hemorrhage

BACKGROUND

We assessed the value of selective arteriography in the diagnosis and management of acute gastrointestinal hemorrhage.

METHODS

We reviewed the records of 107 consecutive patients who had gastrointestinal hemorrhage and underwent selective arteriography between January 1992 and October 2003: 10 had upper gastrointestinal bleeding, 79 had lower gastrointestinal bleeding, and 18 had varicose bleeding with portal hypertension. Selective embolization was attempted in 15 patients to obtain hemostasis. Angiographic findings were reviewed and prospective reports were compared with the final diagnosis and outcome.

RESULTS

Of 129 angiographic studies, 36 correctly revealed the bleeding site and 93 were negative. Extravasation was seen in 24 cases at the level of stomach (n = 2), duodenum (n = 1), small bowel (n = 5), or colon (n = 16). Indirect signs of bleeding sources were identified in 12 patients (stomach in one, small bowel in four, large bowel in four, liver in three). Transcatheter embolization induced definitive hemostasis in 11 of 15 patients (73%), namely in the stomach (n = 2), small bowel (n = 3), colon (n = 7), and liver (n = 3). Three patients required surgery after embolization.

CONCLUSION

Abdominal arteriography may localize gastrointestinal bleeding sources in approximately one-third of cases. Selective embolization may provide definitive hemostasis in most instances.

Acute gastrointestinal bleeding: contrast-enhanced MDCT

With the introduction of multidetector row computed tomography (MDCT), CT is being considered a potential diagnostic method for patients with acute gastrointestinal (GI) bleeding. On arterial phase MDCT images, active GI bleeding is typically identified as a focal area of high attenuation within the bowel lumen, which represents a collection of contrast material that has been extravasated in association with arterial bleeding. Additional CT findings suggestive of acute GI bleeding are focal dilatation of fluid-filled bowel segment noted on contrast-enhanced CT and acute hematoma on unenhanced CT. In addition to detection of active bleeding, an advantage of contrast-enhanced MDCT is the ability to demonstrate morphologic changes in the GI tract, which could suggest specific conditions that cause acute GI bleeding such as intestinal tumors. Arterial phase contrast-enhanced MDCT is rapid, noninvasive, and accurate in detecting and localizing sites of bleeding in patients with acute GI bleeding. Contrast-enhanced MDCT may be a promising diagnostic option in patients with acute GI bleeding.