Emmanuel Rusch

Échographie de contraste temps réel dans la prise en charge diagnostique des lésions nodulaires hépatiques : évaluation des performances diagnostiques et de l'impact économique sur une étude multicentrique française

The recent introduction of high-end ultrasound equipment combined with recent contrast agents provides marked improvements in the characterization of focal liver lesions as previously reported by monocentric studies. The aim of the present study was to evaluate the diagnostic performance of Contrast-Enhanced Ultrasonography (CEUS) using SonoVue as well as its medico-economic value for characterization of focal liver lesions. These nodules were not characterized on previous CT or conventional sonography. This prospective multicentric study conducted in 15 French centres found diagnostic performances similar to those reported for CT and MRI, with a concordance rate of 84.5%, sensitivity greater than 80% and specificity greater than 90% for all types of lesions. Higher acceptance was found for CEUS compared to other imaging modalities. Economical assessment based on examination reimbursment and contrast agent cost showed a lower cost for contrast ultrasound versus CT and MRI. This French multicentric study confirmed the high diagnostic value of CEUS for focal liver lesion characterization and demonstrated a lower economical impact compared to other imaging modalities such as CT and MRI.

Covered vs. uncovered stents for transjugular intrahepatic portosystemic shunt: a randomized controlled trial.

BACKGROUND & AIMS The first studies comparing covered stents (CS) and bare stents (BS) to achieve Transjugular Intrahepatic Portosystemic Shunt (TIPS) were in favor of CS, but only one randomized study has been performed. Our aim was to compare the primary patency of TIPS performed with CS and BS. METHODS The study was planned as a multicenter, pragmatic (with centers different in size and experience), randomized, single-blinded (with blinding of patients only), parallel group trial. The primary endpoint was TIPS dysfunction defined as either a portocaval gradient ⩾12mmHg, or a stent lumen stenosis ⩾50%. A transjugular angiography with portosystemic pressure gradient measurement was scheduled every 6months after TIPS insertion. RESULTS 137 patients were randomized: 66 to receive CS, and 71 BS. Patients who were found to have a hepato-cellular carcinoma, or whose procedure was cancelled were excluded, giving a sample of 129 patients (62 vs. 67). Median follow-up for CS and BS were 23.6 and 21.8months, respectively. Compared to BS, the risk of TIPS dysfunction with CS was 0.60 95% CI [0.38-0.96], (p=0.032). The 2-year rate of shunt dysfunction was 44.0% for CS vs. 63.6% for BS. Early post TIPS complications (22.4% vs. 34.9%), risk of hepatic encephalopathy (0.89 [0.53-1.49]) and 2-year survival (70% vs. 67.5%) did not differ in the two groups. The 2-year cost/patient was 20k€ [15.9-27.5] for CS vs. 23.4k€ [18-37] for BS (p=0.52). CONCLUSIONS CS provided a significant 39% reduction in dysfunction compared to BS. We did not observe any significant difference with regard to hepatic encephalopathy or death.

Bone and joint infections in hospitalized patients in France, 2008: clinical and economic outcomes☆

BACKGROUND Adult bone and joint infections (BJIs) often require repeated and prolonged hospitalizations and are considered as a serious public health issue. AIM To describe the epidemiology and economical outcomes of BJI in France. METHODS BJI hospitalizations with selected demographic, medical, and economic parameters from the French national hospital database for the year 2008 were identified. Overall patient characteristics and hospital stays for BJI underwent univariate analysis. Risk factors for device-associated infections were identified using multiple logistic regression modelling. FINDINGS Of all hospitalizations in France, 0.2% were BJI-related, representing 54.6 cases per 100,000 population, with a higher prevalence in males (sex ratio: 1.54). BJIs were more often native (68%) than device-associated (32%). The mean age was 63.1 years. Only 39% of hospital discharges had microbiological information coded; Staphylococcus spp. were isolated in 66% of those cases. Obesity, Staphylococcus spp., male sex and age >64 years were important risk factors for device-associated infections, whereas diabetes and ulcer sores were significantly associated with native infections. The case fatality was 4.6%. Intensive care unit stays were needed in 6% of cases. Readmissions to hospital occurred in 19% of cases, with significantly longer stays for device-associated infections than for native BJIs (18.9 vs 16.8 days). The cost of BJIs was €259 million, or about €7,000 per hospitalization in 2008. CONCLUSIONS This is the largest BJI study to date. The high economic burden of BJIs was mostly associated with more frequent and prolonged hospitalizations, high morbidity, and complexity of care.

Paediatric bone and joint infections are more common in boys and toddlers: a national epidemiology study

Little is known about bone and joint infections (BJIs) in children, despite the risk of growth disturbance. This study examined BJIs epidemiology using the French National Hospital Discharge Database (HD).

Quality Assessment of Hospital Discharge Database for Routine Surveillance of Hip and Knee Arthroplasty–Related Infections

OBJECTIVE Surgical site infection (SSI) surveillance represents a key method of nosocomial infection control programs worldwide. However, most SSI surveillance systems are considered to be poorly cost effective regarding human and economic resources required for data collection and patient follow up. This study aims to assess the efficacy of using hospital discharge databases (HDDs) as a routine surveillance system for detecting hip or knee arthroplasty-related infections (HKAIs). METHODS A case-control study was conducted among patients hospitalized in the Centre region of France between 2008 and 2010. HKAI cases were extracted from the HDD with various algorithms based on the International Classification of Diseases, Tenth Revision, and procedure codes. The control subjects were patients with hip or knee arthroplasty (HKA) without infection selected at random from the HDD during the study period. The gold standard was medical chart review. Sensitivity (Se), specificity (Spe), positive predictive value (PPV), and negative predictive value (NPV) were calculated to evaluate the efficacy of the surveillance system. RESULTS Among 18,265 hospital stays for HKA, corresponding to 17,388 patients, medical reports were checked for 1,010 hospital stays (989 patients). We identified 530 cases in total (incidence rate, 1% [95% confidence interval (CI), 0.4%-1.6%), and 333 cases were detected by routine surveillance. As compared with 480 controls, Se was 98%, Spe was 71%, PPV was 63%, and NPV was 99%. Using a more specific case definition, based on a sample of 681 hospital stays, Se was 97%, Spe was 95%, PPV was 87%, and NPV was 98%. CONCLUSIONS This study demonstrates the potential of HDD as a tool for routine SSI surveillance after low-risk surgery, under conditions of having an appropriate algorithm for selecting infections.

Surveillance of prosthetic joint infections: international overview and new insights for hospital databases

Since the US National Nosocomial Infections Surveillance System was implemented in the 1970s, several countries have developed their own surveillance systems, all including surgical site infection (SSI) as a major target. However, the performance of such systems needs to be evaluated further in terms of data quality and cost-effectiveness. The current article presents a literature overview of the main strategies used for SSI surveillance worldwide, focusing on hip and knee arthroplasty infections, and discusses new issues for further development of surveillance databases.

Clinical and economic outcomes of infective endocarditis

Abstract Background: In France, the estimated annual incidence of infective endocarditis (IE) is 33.8 cases per million residents. Valvular surgery is frequently undergone. We report an epidemiological and economic study of IE for 2007–2009 in a French region, using the hospital discharge database (HDD). Methods: The population studied concerned all the patients living in Centre region, France, hospitalized for IE. We extracted hospital stay data for IE from the regional HDD, with a definition based on IE-related diagnosis codes. The predictive positive value (PPV) and sensitivity (Se) of the definition were 87.4% and 90%, respectively, according to the Duke criteria (definite IE frequency 74.4%). Hospitalization costs were estimated, taking into account the fixed hospital charges of the diagnosis-related group (DRG) and supplementary charges due to intensive care unit (ICU) stay. Results: The analysis included 578 patients. The annual average incidence was 45.4 cases per million residents. Valvular surgery was performed in 19.4% of cases. The hospital mortality was 17.6%. Multivariate analysis identified as risk factors for mortality an age ≥ 70 years (odds ratio (OR) = 3.03, 95% confidence interval (CI) = 1.78–5.18), staphylococcal IE (OR = 3.3, 95% CI = 1.9–5.7), chronic renal insufficiency (OR = 2.04, 95% CI = 1.00–4.15), ischemic stroke (OR = 2.55, 95% CI = 1.19–5.47), and hemorrhagic stroke (OR = 5.7, 95% CI = 1.9–17.3). The average cost per episode was

Surgical Site Infection After Primary Hip and Knee Arthroplasty: A Cohort Study Using a Hospital Database.

20 103 (€15 281). Conclusions: We report a higher incidence of IE than described by the French national study of 2008. Valvular surgery was considerably less frequent than in the published data, whereas mortality was similar. IE generates substantial costs.

Management of osteoporosis in women after forearm fracture: Data from a French health insurance database

BACKGROUND Hip or knee arthroplasty infection (HKAI) leads to heavy medical consequences even if rare. OBJECTIVE To assess the routine use of a hospital discharge detection algorithm of prosthetic joint infection as a novel additional tool for surveillance. METHODS A historic 5-year cohort study was built using a hospital database of people undergoing a first hip or knee arthroplasty in 1 French region (2.5 million inhabitants, 39 private and public hospitals): 32,678 patients with arthroplasty code plus corresponding prosthetic material code were tagged. HKAI occurrence was then tracked in the follow-up on the basis of a previously validated algorithm using International Statistical Classification of Disease, Tenth Revision, codes as well as the surgical procedures coded. HKAI density incidence was estimated during the follow-up (up to 4 years after surgery); risk factors were analyzed using Cox regression. RESULTS A total of 604 HKAI patients were identified: 1-year HKAI incidence was1.31%, and density incidence was 2.2/100 person-years in hip and 2.5/100 person-years in knee. HKAI occurred within the first 30 days after surgery for 30% but more than 1 year after replacement for 29%. Patients aged 75 years or older, male, or having liver diseases, alcohol abuse, or ulcer sore had higher risk of infection. The inpatient case fatality in HKAI patients was 11.4%. CONCLUSIONS The hospital database method used to measure occurrence and risk factors of prosthetic joint infection helped to survey HKAI and could optimize healthcare delivery.

Étude des séjours pour pneumopathie à Streptococcus pneumoniae entre 2004 et 2008 en région Centre

INTRODUCTION Despite reliable diagnostic methods and effective drugs, the prevention and management of osteoporosis seems insufficient in France. We evaluated bone mineral density (BMD) assessment and prescription of anti-osteoporotic drugs after forearm fracture in women. METHODS We used a health insurance database for outpatients from private clinics in a French population of more than 500,000 inhabitants. Medical expenses were analyzed for women 50 years of age or older who had a forearm fracture between August 1, 2010 and June 30, 2012. RESULTS We identified 250 forearm fractures in women during the study period. In total, 12 women (4.8%) underwent BMD assessment before the fracture and were not taken into account in the analysis. For the 238 others, 24 (10.1%) had undergone BMD assessment at a median of 4 months after the fracture. A total of 32 women (13.4%) received an anti-osteoporotic drug at the time of the fracture and 14 of 206 untreated women (6.8%) received an anti-osteoporotic drug at a median of 3.8 months after the fracture. Receipt of an anti-osteoporotic drug was more frequent for women with than without BMD assessment after the fracture (8/19 [40.1%] versus 6/187 [3.2%]; P<0.005). CONCLUSION This work, performed in a large sample, suggests that only 10% of women 50 years of age or older in France undergo BMD assessment after a forearm fracture and that BMD assessment is associated with anti-osteoporotic drug prescription.