Postbiopsy Bleeding Research Articles

Histopathological Pattern of Glomerulonephritis: Experience from BIRDEM General Hospital, Dhaka, Bangladesh

Background: Glomerulonephritis (GN) remains the most probable underlying cause of end stage renal disease of uncertain aetiology in many developing countries including Bangladesh. The pattern of glomerular disease varies widely from country to country. In Bangladesh, the incidence and histological pattern of GN is inadequately described. We performed a study, aiming to determine the pattern of GN in a diabetic hospital of our country.Methods: It was a cross-sectional hospital based prospective study conducted at BIRDEM General Hospital starting from July 2013 to December 2014. It included all patients with suspected GN who underwent native kidney biopsy.Results: Total 57 biopsies were performed and four cases other than primary or secondary GN (renal cortical necrosis 1, tubulointertsitial nephritis 2,chronic GN 1) were excluded i.e total number of PGN was 37 and secondary GN was 16. number of patients with were 53. M:F was 1.2:1.Mean age was 42.35±15(14-72) years. Thirty one (58.49%) of the study subjects had diabetes mellitus (DM). Mesangialproliferative GN (15/37,40.5%) and diabetic nephropathy (9/16,56%) were the commonest histopathological pattern found among primary and secondary GN respectively. Membranoproliferative GN (10/37,27%),was the second commonly observed pattern followed by focal segmental proliferative GN (8%), membranous nephropathy (8%), focal segmental glomerulosclerosis (5.4%) in primary GN and lupus nephritis (6/16,38%) and Wegeners granulomatosis (1/16) were other varieties in secondary group. Among 53 cases, 37 had proliferative variety. Nephrotic range proteinuria (41.5%) was the commonest indication of biopsy and 22% had post biopsy bleeding and 3.7% required blood transfusion.Conclusion: In conclusion, mesangial proliferative and membranoproliferative GN are the two common causes of primary GN. Diabetic nephropathy is the commonest cause of secondary GN. Nephrotic range proteinuria was the main indication of biopsy. Post biopsy complication was negligible. Creation of a national renal registry is essential for obtaining more specific epidemiological data.Birdem Med J 2016; 6(2): 67-73

Complications of percutaneous liver biopsy with Klatskin needles: a 36-year single-centre experience.

Liver biopsy is the gold standard in evaluating liver diseases but is susceptible to complications. Safety data on aspiration needle biopsies remain limited. To evaluate the safety of percutaneous liver biopsy performed with Klatskin needle. Clinical and biochemical data were retrospectively retrieved from sequential subjects who underwent liver biopsy with Klatskin needle from 1978 to 2015. Subjects with complications underwent thorough chart reviews for hospital course. Of 3357 biopsies performed, complications occurred in 135 (4%) biopsies with 33 (1%) resulting in major complications. Severe pain occurred in 78 (2.3%) subjects and bleeding occurred in 21 (0.6%) subjects. Biliary injury occurred in 8 (0.2%) biopsies. Three subjects died as a result of massive intraperitoneal bleeding. Compared to viral hepatitis, biopsies performed with certain diagnosis had significantly higher odds of major complications: NRH (OR: 17), DILI (OR: 20), GVHD (OR: 32) and HCC (OR: 34). Subjects with major complications had higher pre-biopsy median AP (153 vs. 78 U/L, P < 0.001), ALT (105 vs. 64 U/L, P < 0.05), AST (62 vs. 47 U/L, P < 0.02), along with marginally lower total bilirubin (1.0 vs. 0.7 mg/dL, P < 0.01) and albumin (3.7 vs. 4.0 g/dL, P < 0.001). By multivariate backward logistic regression, platelets ≤100 K/μL and aPTT >35 were independent risk factors of post-biopsy bleeding. Klatskin needle liver biopsies are safe with rare procedural morbidity. Our data suggests certain acutely ill subjects and those with systemic illnesses may be at higher risk of major complications. Clinicians should weigh the risks and benefits of liver biopsy in these patients with other alternative approaches.

New Radiofrequency Device to Reduce Bleeding after Core Needle Biopsy: Experimental Study in a Porcine Liver Model.

ObjectiveTo evaluate the in vivo efficiency of the biopsy tract radiofrequency ablation for hemostasis after core biopsy of the liver in a porcine liver model, including situations with bleeding tendency and a larger (16-gauge) core needle.Materials and MethodsA preliminary study was performed using one pig to determine optimal ablation parameters. For the main experiment, four pigs were assigned to different groups according to heparinization use and biopsy needle caliber. In each pig, 14 control (without tract ablation) and 14 experimental (tract ablation) ultrasound-guided core biopsies were performed using either an 18- or 16-gauge needle. Post-biopsy bleeding amounts were measured by soaking up the blood for five minutes. The results were compared using the Mann-Whitney U test.ResultsThe optimal parameters for biopsy tract ablation were determined as a 2-cm active tip electrode set at 40-watt with a tip temperature of 70–80℃. The bleeding amounts in all experimental groups were smaller than those in the controls; however they were significant in the non-heparinized pig biopsied with an 18-gauge needle and in two heparinized pigs (p < 0.001). In the heparinized pigs, the mean blood loss in the experimental group was 3.5% and 13.5% of the controls biopsied with an 18- and 16-gauge needle, respectively.ConclusionRadiofrequency ablation of hepatic core biopsy tract ablation may reduce post-biopsy bleeding even under bleeding tendency and using a larger core needle, according to the result from in vivo porcine model experiments.

Risk Factors for Severe Bleeding Complications in Percutaneous Renal Biopsy

BackgroundPercutaneous renal biopsy is essential for diagnosis of many renal diseases. Previous studies have revealed a variety of factors associated with bleeding complications of renal biopsy; however, data are not sufficient in the Chinese population. We aimed to investigate the risk factors for severe post-biopsy bleeding events in a large cohort of Chinese patients. Materials and MethodsThe data of patients who underwent percutaneous renal biopsy from January 2008 to December 2012 were collected. Severe bleeding complication was defined as requiring intervention, including blood transfusion or an invasive procedure (radiological or surgical) due to bleeding. Logistic regression analysis was used to assess risk factors. ResultsOver the 5-year period, 3,577 native kidney biopsies were performed. Severe bleeding complication occurred in 14 biopsies (0.39%). The patients with complications were older, had higher blood pressure, lower hemoglobin, lower platelet count and worse renal function. Multivariable logistic regression demonstrated that platelet level and the estimated glomerular filtration rate were independently associated with the risk of complications. Each 10 × 109/L increase of platelet count was associated with an 11% decrease of severe bleeding risk (odds ratio = 0.89; 95% CI: 0.80-0.98; P = 0.02). Each 1mL/minute/1.73m2 increase of the estimated glomerular filtration rate was associated with a 4% decrease of severe bleeding risk (odds ratio = 0.96; 95% CI: 0.94-0.99; P = 0.004). ConclusionsPatients with worse renal function and lower platelet counts had a higher risk of developing severe bleeding events after renal biopsy.

Quality assurance manual of endoscopic screening for gastric cancer in Japanese communities.

The Japanese government introduced endoscopic screening for gastric cancer in 2015 as a public policy based on the Japanese guidelines on gastric cancer screening. To provide appropriate endoscopic screening for gastric cancer in Japanese communities, we developed a quality assurance manual of endoscopic screening and recommend 10 strategies with their brief descriptions as follows: (i) Formulation of a committee responsible for implementing and managing endoscopic screening, and for deciding the suitable implementation methods in consideration of the local context; (ii) Development of an interpretation system that leads to a final judgement to standardize endoscopic examination and improve its accuracy; (iii) Preparation of management and reporting systems for adverse effects by the committee for safety management; (iv) Obtaining informed consent before operation following adequate explanations regarding the benefits and harms of endoscopic screening; (v) Avoidance of frequent screenings to reduce false-positive results and overdiagnosis. As a reference, the target age group is ≥50 years, and the screening interval is 2 years; (vi) Keeping the biopsy rate within 10% as post-biopsy bleeding may occur. Before endoscopic screening, any history of antithrombotic drug usage should be checked; (vii) Nonadministration of sedation in endoscopic screening for safety management; (viii) Adherence to proper endoscopic cleaning and disinfection to reduce infection; (ix) Use of a checklist to achieve optimal program preparation when municipal governments introduce endoscopic screening; (x) Identification of the aims and roles by referring to a checklist if primary care physicians decide to participate in endoscopic screening.

A Two Year Observation on Trend of Primary Glomerulonephritis in A Tertiary Care Hospital of Bangladesh

Aim: Glomerulonephritis remains the most probable underlying cause of end stage renal disease of uncertain aetiology in many developing countries, including Bangladesh. The pattern of glomerular disease varies widely from country to country. In Bangladesh, the incidence and histological pattern of glomerulonephritis is inadequately described. We performed a study, aiming to determine pattern of primary glomerulonephritis in a tertiary care hospital of our country.Material &amp; Methods: It was a cross-sectional hospital based prospective study conducted at BIRDEM general hospital starting from from July 2013 to June 2015. It included all patients with primary glomerulonephritis and who underwent native kidney biopsy.Result: Total 67 biopsy were performed and among them primary glomerulonephritis was 42. Female and male ratio was 1.3:1 and mean age was 42.73±14 (14-75) years. Indications of biopsy were proteinuria (&gt;1gm/day) and unexplained acute kidney injury. The commonest histopathological pattern in primary glomerulonephritis was membranoproliferative glomerulonephritis 33.33% (14/ 42) followed by mesangial proliferative glomerulonephritis 30.95% (13/42). Only three (7%) patient required blood transfusion for post biopsy bleeding. No one required nephrectomy.Conclusion: In conclusion, mesangial proliferative and membranoproliferative glomerulonephritis are the two most common causes of primary glomerulonephritis. Nephrotic range proteinuria was the main indication of biopsy. Post biopsy complication was negligible. Creation of a national renal registry is essential for obtaining more specific epidemiological data.Bangladesh J Medicine Jul 2016; 27(2) : 68-70

Risk factors for bleeding after liver biopsy.

Determine factors that increase the risk of bleeding after liver biopsy. Retrospective review of radiology and clinical databases from Jan 2008 to Jun 2014 revealed 847 patients with liver biopsy. Of these, 154 (group I) had targeted biopsy of focal lesion and 142 (group 2) had random core biopsy for diffuse liver disease. The rest of the patients were excluded due to insufficient post-biopsy data. Data including pre-biopsy laboratory results, history of transfusion, and biopsy complications were recorded in the study cohort. After review of initial results, a "Risk Score" for bleeding was created using platelet count, INR, estimated glomerular filtration rate (eGFR), and suspicion of malignancy. Zero point was given for normal laboratory results or absence of malignancy. One point was given for mildly abnormal laboratory values or presence of malignancy. Severe biochemical abnormalities, e.g., INR>2.0, eGFR<30mL/min, or platelet count≤50×10(9)/L were given two points each. The "Risk Score" was made of adding individual points. Of 847 patients queried by retrospective database search, 296 had adequate records for the period of 2weeks prior to biopsy to 4weeks after biopsy. The remaining patients had liver biopsy as outpatients and probably did not have bleeding complications but no electronic records were found to confirm this. 25 (8.4%) of 296 patients had post-biopsy bleeding, with incidences of 11.7% and 4.9% in groups 1 and 2 (p=0.04). On logistic regression analysis, the only significant predictor of bleeding was the "Risk Score" (p=0.01, odds ratio 4.6). There was substantial overlap in INR, and platelet count in bleeders vs. non-bleeders. Pre-biopsy fresh frozen plasma or platelet concentrate infusions did not reduce the risk of bleeding. INR and platelet count are not an independent risk factors for post-biopsy bleeding. A "Risk Score" made up of individual risk factors was a better predictor of bleeding.

Acute and delayed bleeding requiring embolization after image-guided liver biopsy in patients with cancer

PurposeTo report incidence of acute versus delayed presentations of bleeding requiring embolization after focal liver biopsy, in correlation with angiographic findings and treatment success rates. The available literature will be reviewed as well. Materials and methodsHealth Insurance Portability and Accountability Act-compliant institutional review board approved retrospective review of 2180 consecutive patients undergoing 2335 targeted liver biopsies at a tertiary-care cancer center. Hepatic arterial embolization episodes within 30days from biopsy were identified via radiology PACS. Electronic medical record review was performed for indication of embolization and postembolization clinical course. ResultsThe incidence of postbiopsy bleeding requiring embolization was 0.5% (12/2335 biopsies). In those with bleeding, 1/12 (8%) had no hepatic arterial findings at angiography. Angiographic hepatic arterial findings resolved after embolization in 11/11 patients (100% technical success). Bleeding ceased after embolization in 10/12 patients (83% clinical success). Complications were seen in 2/12 (17%) patients: cholecystitis and hepatic infarct, respectively. Delayed presentation of bleeding (defined as >24h postbiopsy) occurred in 5/12 (42%) patients; the longest latency was 12days. ConclusionThe overall incidence of bleeding requiring embolization in our population was 0.5%. This complication rate compares favorably to the 0–4.2% (median: 0.29%) rate quoted in the available, heterogeneous, literature on this topic. Delayed presentation occurred in almost half of patients. Arterial embolization carries excellent technical and clinical success rates.

Gastrointestinal Hemorrhage Due to Biopsy in Collagenous Gastritis and Subsequent Prevention Using Argon Plasma Coagulation

Collagenous gastritis (CG) is a rare condition characterized by gastric subepithelial collagen deposition. The condition has been linked to iron-deficiency anemia, hypothesized due to bleeding from superficial capillaries entrapped in collagen. One case of mucosal friability and one case of upper GI bleeding due to CG have been reported. To our knowledge, bleeding from gastric biopsy sites and the management with argon plasma coagulation (APC) have not been previously described. A 40-year-old woman with a history of fibromyalgia presented with complaint of epigastric pain and nausea. Physical examination was normal. Her medications included ibuprofen 600 mg for musculoskeletal pain. Hemoglobin (Hb) was 13.2 g/dL, platelet count 270,000 cells/ul, prothrombin time 11.1 seconds, and activated partial thromboplatin time 21 seconds. Ibuprofen was discontinued. Upper endoscopy was performed 1 week later demonstrating a nodular gastric mucosa. There was mucosal friability and post biopsy bleeding that resolved slowly. Two days later, the patient returned with hematemesis. The Hb was 8.8 g/dL. Upper endoscopy demonstrated red blood oozing over multiple gastric biopsy sites. Hemostasis was achieved with epinephrine injection, bipolar cautery and endoclips. A hematologic evaluation for bleeding disorders was negative. The gastric biopsies showed increased subepithelial collagen deposition with capillary entrapment. Collagen fibers stained intensely blue by Masson trichrome. She was diagnosed with CG. Follow up endoscopy 1 year later showed persistence of the nodular gastropathy. Disproportionate bleeding and friability was noted again after gastric biopsy. Hemostasis was achieved using APC, preventing post-biopsy hemorrhage. Gastric biopsies showed persistent subepithelial collagen deposition. CG is characterized by irregular thickening of the subepithelial collagen band with entrapment of capillaries. CG may present with isolated gastric involvement or concurrent extragastric involvement. Celiac disease, collagenous sprue or collagenous colitis is found in approximately 30% of cases. CG has been reported in association with anemia and upper GI bleeding. Management of bleeding in CG has not been described. The pathophysiology of bleeding is not understood. Biopsies in this case were mucosal with no exposed vessels, suggesting a defect in platelet plug formation. We describe a patient with biopsy-site hemorrhage associated with CG, managed successfully with APC. APC was useful in this case due to the mucosal friability associated with CG.Figure 1Figure 2Figure 3

Post renal biopsy complication rate and diagnostic yield comparing hands free (ultrasound-assisted) and ultrasound-guided biopsy techniques of renal allografts and native kidneys.

BackgroundReal time ultrasound guided percutaneous kidney biopsy has become the standard procedure to assess the pathology of native kidneys and renal transplants. No specific technique has shown to be totally free of post biopsy bleeding complications. Few Studies have looked at the rates of post biopsy bleeding complications comparing different needle size, post biopsy haematoma size, or clinical predictors of the complication rates. In this study we aim to assess safety and adequacy of the real time ultrasound guided biopsy using free hands (ultrasound-assisted) and ultrasound-guided technique.MethodThe results of 527 elective native and kidney transplant biopsy performed as a day case procedure at Lancashire Teaching Hospitals were retrospectively reviewed (499 native and 28 allograft biopsies). Biopsies were grouped into 4 groups according to the technique and the needle size; group 1 (n = 119; performed by free hands-ultrasound assisted- technique using 14G needle) Group 2 (n = 59; performed by free hands-ultrasound-assisted technique using 16G needle), group 3 (n = 195; performed by ultrasound-guided technique using 14G), and group 4 (n = 154; performed by ultrasound-guided technique using 16G). The 4 groups were matched in age, sex, weight, haemoglobin, serum creatinine, INR, PT, and PTT time.ResultsThe overall tissue specimen was adequate in 80.45 % of the cases, with no difference between group 1 and 3 (81.5 and 80.52 % respectively, p = 0.82) or between group 2 and 4 (86.44 and 77.3 % respectively, p = 0.13). The overall major complications rate was 2.84 %, with no difference between group 1 and 3 (2.5 and 1 % respectively, p = 0.30) or group 2 and 4 (5 and 4.5 % respectively, p = 0.86). The overall minor complications was 3.7 % with no difference between group 2 and 4 (3.3 and 5.84 % respectively, p = 0.46), however, minor complications were higher in group 1 compared to group 3 (5.8 and 1 % respectively, p = 0.01).There was no difference between using 14G and 16G needle size in terms of tissue adequacy(p = 0.7), major complications (p = 0.2 for drop in Hb >10 g/l, p = 0.08 for blood transfusion, p = 0.35 for embolization) or minor complication items(p = 0.4 for drop in Hb, 10 g/l,p = 0.1 for haematuria, p = 0.7 for hematoma).ConclusionWhen using a 14G needle, there is higher risk of minor complications in the free hands-(ultrasound-assisted) technique compared to the ultrasound-guided technique. There is no difference in the rates of major or minor complications between free hand and needle-guided technique using 16G needles. Both techniques showed adequate tissue sampling.

Safety of Percutaneous Ultrasound-Guided Kidney Biopsy in Patients with AA Amyloidosis

Background: Bleeding is the most frequent complication of kidney biopsy. Although bleeding risk in patients with AA amyloidosis after kidney biopsy has not been studied in a large population, AA amyloidosis has long been perceived as a risk factor for bleeding. The aim of the present study was to evaluate post-biopsy bleeding risk in patients with AA amyloidosis. Methods: We retrospectively analyzed bleeding complications in 88 patients with AA amyloidosis and 202 controls after percutaneous kidney biopsy. All the kidney biopsies were performed under the guidance of real-time ultrasound with the use of an automated core biopsy system after a standard pre-biopsy screening protocol. Bleeding events were classified as major when transfusion of blood products or surgical or radiological intervention was required, or if the bleeding caused hypovolemic shock or death. Bleeding events that did not meet these criteria were accepted as minor. Results: The incidence of post-biopsy bleeding was comparable between AA amyloidosis and control groups (5.7 vs. 5.0%, p = 0.796). Major bleeding events were observed in 3 patients from each group (p = 0.372). Selective renal angiography and embolization were applied to 2 patients from the AA amyloidosis group. One of these patients underwent colectomy and died because of infectious complications. Bleeding events were minor in 2.3% of the patients with AA amyloidosis and 3.5% of the controls (p = 0.728). Conclusions: AA amyloidosis was not associated with increased post-biopsy bleeding risk. Kidney biopsy is safe in AA amyloidosis when standard pre-biopsy screening is applied. Further data are needed to confirm these findings.

Diagnosis of Helicobacter pylori by invasive test: histology.

The accurate detection of Helicobacter pylori (H. pylori), a major cause of gastric cancer, is essential for managing infected patients. Among various diagnostic methods, histology plays a pivotal role in detecting H. pylori and it also provided more information about the degree of inflammation and associated pathology, such as, atrophic gastritis (AG), intestinal metaplasia (IM), and gastric cancer. The diagnosis of H. pylori could be performed in hematoxylin and eosin (H&E) staining, however the specificity can be improved by special stains such as modified Giemsa, Warthin-Starry silver, Genta, and immunohistochemical (IHC) stains. Thus, at least two kinds of stain methods are recommended for diagnosis in practice; H&E staining is routine and Giemsa stain seems to have advantage over other stains because of its simplicity and consistency. IHC stain may be useful in special situations. However, histology has several limitations, including higher cost, longer turnaround time, dependence on the skills of the operator, and interobserver variability in assessment. Furthermore, the density of H. pylori can vary at different sites, possibly leading to sampling error, and the sensitivity of histology may decrease in patients taking proton pump inhibitor (PPI). The updated Sydney system recommend to take five biopsy specimens from different sites; however if this is not possible, the gastric body greater curvature could be a better site to detect current H. pylori infections, especially in the presence of peptic ulcer bleeding, AG and IM, or gastric cancer. In the presence of peptic ulcer bleeding, histology is also the most reliable test. PPIs can affect the result of histology and should be stopped 2 weeks before testing. Postbiopsy bleeding may be increased in patients with anticoagulation therapy, so careful precautions should be taken.

A novel approach to ultrasound-guided percutaneous native renal biopsy: a better tissue sampling technique

AbstractBackground: Percutaneous renal biopsy (PRB) is an essential tool in diagnosis and management of various renal diseases. Conventional ultrasound-guided free-hand approaches to the lower pole of the kidney for PRB yield marginal tissue adequacy and causes a certain incidence of bleeding complications.Objective: To describe a novel ultrasound-guided approach to the middle part of the kidney for PRB to obtain better tissue sampling.Patients and methods: The plane angle between the renal biopsy needle and the skin was set at 30° for patients in the novel middle part approach group (n = 15) and 45° for patients in the conventional lower pole approach group (n = 15).Results: The perpendicular distance between the needle tip and renal capsule in the middle part approach was significantly shorter than the lower pole approach group (0.92 ± 0.6 vs. 1.49 ± 0.4 cm, p = 0.005). The middle part approach to PRB yielded a significantly higher number of glomeruli (22.8 ± 7.2 vs. 15.3 ± 4.1, p = 0.002) and arcuate arteries (0.9 ± 0.6 vs. 0.5 ± 0.1, p = 0.02). The bleeding complications in the middle part approach seemed to be less than in the lower pole approach technique. Pain scores between the two methods as assessed using a visual analog scale were not different.Conclusion: This novel approach to the middle part of the kidney for PRB provides comparable patient satisfaction and a superior adequacy of renal tissue when compared with the conventional lower pole approach with its consequent lower post biopsy bleeding complications. Larger studies to confirm this finding are warranted.

Emergency endoscopy for acute gastrointestinal bleeding: Prognostic value of endoscopic hemostasis and the AIMS65 score in Japanese patients

To evaluate the prognostic factors, including risk scores (Glasgow-Blatchford score and AIMS65) in patients with acute upper or lower gastrointestinal bleeding. The medical records of patients who had undergone emergency gastrointestinal endoscopy for suspected gastrointestinal bleeding during the past 5 years were retrospectively analyzed. A total of 232 endoscopies (130 esophagogastroduodenoscopies, 102 colonoscopies) for 192 patients met the inclusion criteria. Median age was 66 years, and 64% of patients were males. Endoscopy identified causes for bleeding in 173 patients (post-endoscopic interventions for neoplastic lesions in 36 cases, colonic diverticula in 34, gastroduodenal ulcers in 29, gastric erosions in 15, vascular ectasia in 14, post-biopsy bleeding in 13, malignant tumors in 10, inflammatory conditions in nine, esophagogastric varices in five, Mallory-Weiss tears in four, nasalbleeding in three, and injury by swallowed blister pack in one), whereas the source of bleeding remained obscure in 19 patients. Blood transfusion was given in 97 patients (51%), and 97 (51%) underwent endoscopic hemostasis. During the follow-up period, 49 patients (26%) experienced rebleeding, seven of whom were treated by interventional radiology. Thirty-nine patients (20%) died as a result of various diseases. The probabilities of overall survival (OS) after 3 and 5 years were 71% and 67%, respectively. Cox multivariate analysis revealed blood transfusion, co-existing malignancy, absence of endoscopic hemostasis, and high AIMS65 score to be independent prognostic factors for poor OS. The AIMS65 score is useful for predicting the prognosis of patients with acute gastrointestinal bleeding.

Ultrasound-guided plugged percutaneous biopsy of solid organs in patients with bleeding tendencies

To establish and verify the utility of plugging biopsy tracts, using a combination of Gelfoam slurry and torpedo in the prevention of post-biopsy bleeding in patients at high risk of post-procedure haemorrhage following ultrasound-guided percutaneous biopsy of solid organs. Case series. Radiology Department of a regional hospital in Hong Kong. In our unit, all patients considered to be at high risk of post-biopsy haemorrhage of a solid organ underwent ultrasound-guided plugged percutaneous biopsy from year 2005 to 2012. All the included patients had undergone real-time ultrasound-guided biopsy of solid organs (liver in 10 and spleen in one patient). In all cases, a combination of a coaxial introducer needle and Temno needle were used. After adequate specimens were obtained, Gelfoam slurry (for distal embolisation) followed by Gelfoam torpedo (for proximal embolisation) were used to plug the biopsy tract. Technical success, any post-biopsy haemorrhage treated by transfusion or other intervention, and plugging-related complications were reviewed for each patient. Technical success was achieved in all patients and none experienced post-biopsy haemorrhage treated by blood transfusion or any other intervention. Plugging of the biopsy tract with Gelfoam slurry followed by Gelfoam torpedo is a direct and simple procedure that can safely and effectively prevent haemorrhage in patients at high risk of post-biopsy haemorrhage.

Lumbar artery pseudoaneurysm as a late complication of osteomyelitis with vertebral body destruction

We report the case of a 79-year-old patient whose acute back pain revealed a 9-cm nonruptured lumbar artery pseudoaneurysm occurring 5 years after a vertebral body osteomyelitis that induced a significant vertebral destruction. She underwent an urgent percutaneous selective arterial embolization. Lumbar artery false aneurysm should, thus, be suspected as a possible etiology of any new painful symptoms in patients suffering from a chronic vertebral destructive disease.

Performance of Biopsy Needle With Therapeutic Injection System to Prevent Bleeding Complications

Renal disease is epidemic in the United States with approximately 8 × 106 people having chronic kidney disease. Renal biopsies are widely used to provide essential diagnostic information to physicians. However, the risk of bleeding complications possibly leading to life-threatening situations results in the contra-indication of biopsy in certain patient populations. Safer renal biopsies will allow more accurate diagnosis and better management of this epidemic health problem. We report the preclinical testing of a novel biopsy device called the therapeutic injection system (TIS). The device introduces a third stage to the standard two-stage side-cut percutaneous biopsy process. The third stage is designed to reduce bleeding complications by injecting a hemostatic plug at the time of biopsy. Laboratory evaluation and preliminary in vivo animal testing using an anticoagulated porcine model of the TIS and Bard Monopty® (Bard Medical, Covington, GA) control device were performed. The hemostatic material Gelfoam® (Pfizer, Brussels, Belgium) was selected as the active material comprising the hemostatic plugs. The performance of two composite plugs, one composed of polyvinyl alcohol (PVA) combined in 2:1 and 12:1 ratios with the hemostatic material, and one plug composed of 100[Formula: see text] hemostatic material were tested. Stroke sequence and hemostatic plug deployment were verified by sequential firing of the TIS biopsy needle into clear gelatin and ex vivo bovine kidney specimens. In vivo trials with porcine specimens revealed a significant reduction in blood loss (8.1 [Formula: see text] 3.9 ml, control versus 1.9 [Formula: see text] 1.6 ml, 12:1 PVA/hemostatic, TIS, [Formula: see text] = 0.01, [Formula: see text] = 6). The 100[Formula: see text] hemostatic plug showed a substantial and immediate reduction in blood loss (9.2 ml, control versus 0.0 ml, TIS, [Formula: see text] = 1). The prototype device was shown to work repeatedly and reliably in laboratory trials. Initial results show promise in this approach to control post biopsy bleeding. This solution maintains the simplicity and directness of the percutaneous approach, while not significantly changing the standard percutaneous biopsy procedure.

Color Doppler ultrasound‐guided transducer compression of post biopsy bleeding of kidney transplants

Color Doppler ultrasound (CDUS) has a potential of early detection of post biopsy bleeding. We describe CDUS guidance in planning, acquisition, and, in the case of bleeding, compression of the needle tract in biopsy procedures of kidney transplants. Eighty-three kidney transplant biopsy procedures performed on clinical indication were performed in 71 adult patients, 25 women, mean age 51 years, using CDUS and 18-G biopsy needles. Bleeding needle tracts were compressed using CDUS guidance. CDUS immediately detected blood leakage and facilitated compression of the bleeding needle tract in 34 (41%) of the 83 procedures, including 53 (25%) of 215 needle passes. In 34 bleeding procedures, the mean duration of the longest bleeding time after a needle pass was 124 seconds (median, 20 seconds; range, 3-1440 seconds). In 12 of these procedures (35%), the bleeding time was 30 seconds or more. In six procedures (18%), a bleeding of 120 seconds or more was observed. Complications included seven small hematomas. Five hematomas developed in procedures where the longest duration CD bleeding was 120 seconds or more. CDUS detects bleeding and facilitates direct transducer compression of the needle tract in a substantial portion of biopsy procedures of kidney transplants. Only minor hematomas occurred.

Effectiveness and safety of minilaparoscopy-guided spleen biopsy: a retrospective series of 57 cases

Minilaparoscopy is an accepted method for liver biopsy. We report our experience with minilaparoscopy for splenic biopsy. We reviewed the records of all minilaparoscopy procedures performed from 1996 to 2004 at the University of Mainz Medical Center and from 2005 to mid-2011 at the University of Hamburg Medical Center to identify patients who underwent a minilaparoscopy-guided splenic biopsy. All procedures were performed using the previously described method (2.75-mm trocar, 2.3-mm Veress needle, 1.9-mm laparoscope) with the patient under conscious sedation (midazolam/meperidine/propofol). Splenic biopsies were performed using a second trocar with an 18-G Tru-Cut needle. Argon plasma coagulation (APC) and/or fibrin glue (FG) were used to control postbiopsy bleeding. Fifty-seven patients underwent minilaparoscopy-guided biopsy of the spleen (27 females, 30 males; median age = 41 years, range = 16-76). A specimen suitable for histopathologic evaluation was obtained in all patients. Grouped by preprocedure indication, a definitive diagnosis was obtained in 70% (7/10) of patients who had splenic mass lesions in prior imaging (3 B-NHL, 2 hemangioma, 1 tuberculosis, 1 sarcoidosis; p < 0.01) compared to 29% (10/34) in the group with unexplained fever or suspected lymphoma (3 tuberculosis, 2 B-NHL, 1 hepatosplenic T-cell lymphoma, 1 sarcoidosis, 1 Still's disease, 1 EBV, 1 Q-fever) and 0/13 with unexplained splenomegaly. Focal lesions noted at laparoscopy yielded to a histologic diagnosis in 38% (11/29) of 42 patients compared to 21% (6/28) without laparoscopic abnormality (p = 0.25). Bleeding from the biopsy site was noted in 96.5% (55/57) and was classified as brisk in 9. Control of hemorrhage was achieved in all patients (APC: 47, FG: 1, APC/FG: 7). There was no postprocedure bleeding or other complications. Splenic biopsy guided by minilaparoscopy can be performed safely. Postprocedure bleeding is readily controlled with APC with or without fibrin glue. The highest diagnostic yield is in patients with focal splenic lesions.

Desmopressin Acetate in Percutaneous Ultrasound-Guided Kidney Biopsy: A Randomized Controlled Trial

Bleeding complications occur in one-third of percutaneous kidney biopsies and increase costs of the hospital stay. The aim of the study was to evaluate the effect of prebiopsy administration of desmopressin acetate versus placebo in the incidence of postbiopsy bleeding complications. Double-blind randomized controlled clinical trial. We enrolled all patients with serum creatinine level ≤1.5 mg/dL and/or estimated glomerular filtration rate ≥60 mL/min/1.73 m(2) and normal coagulation parameters undergoing ultrasound-guided biopsy of the native kidney in our unit from August 2008 to December 2009. We examined prebiopsy subcutaneous administration of desmopressin acetate, 0.3 μg/kg, compared with placebo. The primary outcome was incidence of bleeding complications. Secondary outcomes were hematoma size, postbiopsy hemoglobin level, coagulation parameters, glomerular filtration rate, blood pressure, and length of hospital stay. 162 adult patients (88 men and 74 women) were enrolled; 80 were allocated to desmopressin treatment, and 82, to the placebo group. Desmopressin compared with placebo significantly decreased the risk of postbiopsy bleeding (11 of 80 [13.7%] vs 25 of 82 [30.5%]; relative risk, 0.45; 95% CI, 0.24-0.85; P = 0.01), hematoma size (median, 208 [25th-75th percentile, 120-300] vs 380 [25th-75th percentile, 270-570] mm(2); P = 0.006] in the 36 patients who experienced bleeding, and mean hospital stay (4.9 ± 1.1 vs 5.9 ± 1.7 days; P = 0.004); postbiopsy hemoglobin levels were not affected significantly in either group. Single-center design of the study. Prebiopsy desmopressin administration decreases the risk of bleeding and hematoma size in patients undergoing percutaneous kidney biopsy without a cost increase.