Epidemiology, Outcomes, and Complement Gene Variants in Secondary Thrombotic Microangiopathies.

BACKGROUND: The identification of complement defects as major drivers of primary atypical hemolytic uremic syndrome (HUS) has transformed the landscape of thrombotic microangiopathies (TMAs), leading to the development of targeted therapies and better patient outcomes. By contrast, little is known about the presentation, genetics, and outcomes of TMA associated with specific diseases or conditions, also referred to as secondary TMA. METHODS: In this study, we assessed the relative incidence, clinical and genetic spectra, and long-term outcomes of secondary TMA versus other TMAs in consecutive patients hospitalized with a first episode of TMA from 2009 to 2019 at two European reference centers. RESULTS: During the study period, 336 patients were hospitalized with a first episode of TMA. Etiologies included atypical HUS in 49 patients (15%), thrombotic thrombocytopenic purpura (TTP) in 29 (9%), shigatoxin-associated HUS in 70 (21%), and secondary TMA in 188 (56%). The main causes of secondary TMA were hematopoietic stem-cell transplantation ( n =56, 30%), solid-organ transplantation ( n =44, 23%), and malignant hypertension ( n =25, 13%). Rare variants in complement genes were identified in 32 of 49 patients (65%) with atypical HUS and eight of 64 patients (13%) with secondary TMA; pathogenic or likely pathogenic variants were found in 24 of 49 (49%) and two of 64 (3%) of them, respectively ( P < 0.001). After a median follow-up of 1157 days, death or kidney failure occurred in 14 (29%), eight (28%), five (7%), and 121 (64%) patients with atypical HUS, TTP, shigatoxin-associated HUS, and secondary TMA, respectively. Unadjusted and adjusted Cox regressions showed that patients with secondary TMA had the highest risk of death or kidney failure (unadjusted hazard ratio [HR], 3.35; 95% confidence interval [CI], 1.85 to 6.07; P < 0.001; adjusted HR, 4.11; 95% CI, 2.00 to 8.46; P < 0.001; considering atypical HUS as reference). CONCLUSIONS: Secondary TMAs represent the main cause of TMA and are independently associated with a high risk of death and progression to kidney failure.

Non-COVID-19 In-Hospital Admission in a Large Academic Center in Belgium During the First Two Waves of the COVID-19 Pandemic.

BACKGROUND: Preliminary reports described a reduction in non-COVID admissions during the first wave of the pandemic including some of critical diseases such as cancer, myocardial and cerebral infarction. OBJECTIVE: The aim of our study was to evaluate the impact of the COVID-19 pandemic on non-COVID in-hospital admissions in a large academic center in Belgium. MATERIALS AND METHODS: We performed a retrospective study of non-COVID-19 in-hospital admissions during the first two waves of the COVID-19 pandemic. The average number of admissions per week in 2020 has been compared to that of the same period in 2019 and 2018. Comparisons were made first for all admissions, then by disease groups, using the classification of APRDRG, and then by diagnoses using ICD-10-CM classification. RESULTS: Overall in-hospital admissions were reduced by around 39% and 29% during the first and the second waves of the COVID-19 pandemic respectively compared to 2018 and 2019. No significant difference was found between the average number of admissions in the early-COVID and the pre-COVID baseline period during the two waves. The average number of admissions was significantly reduced in the peak-COVID period compared to the baseline (first wave: 332 versus 763 admissions/week, p<0.01, -57%; second wave: 496 versus 788 admissions/week, p<0.01, -37%), as well as in the late-COVID period compared to the baseline (first wave: 412 versus 763 admissions/week, p<0.01, -46%; second wave: 470 versus 788 admissions/week, p<0.01, -40%). Cancer, myocardial and cerebral infarction admissions were not statistically reduced during the the two waves of COVID pandemic compared to the pre-COVID period. CONCLUSION: Our study shows that non-COVID in-hospital admissions rates were substantially reduced during the first two waves of COVID-19 pandemic. In our study, cancer, myocardial and cerebral infarction admissions were not statistically reduced, which was not in accordance to what was described in the literature.

Comorbidity in head and neck cancer: Is it associated with therapeutic delay, post-treatment mortality and survival in a population-based study?

OBJECTIVES: This study aims to investigate the relationship between comorbidities and therapeutic delay, post-treatment mortality, overall and relative survival in patients diagnosed with squamous cell carcinoma of the head and neck (HNSCC). PATIENTS AND METHODS: 9245 patients with a single HNSCC diagnosed between 2009 and 2014 were identified in the Belgian Cancer Registry. The Charlson Comorbidity Index (CCI) was calculated for 8812 patients (95.3%), distinguishing patients having none (0), mild (1-2), moderate (3-4) or severe comorbidity (>4). The relationship between CCI and therapeutic delay was evaluated using the Spearman correlation. Post-treatment mortality was modelled with logistic regression, using death within 30 days as the event. The association between comorbidity and survival was assessed using Cox proportional hazard models. RESULTS: Among 8812 patients with a known CCI, 39.2% had at least one comorbidity. Therapeutic delay increased from 31 to 36 days when the CCI worsened from 0 to 4 (rho = 0.087). After case-mix adjustment, higher baseline comorbidity was associated with increased post-surgery mortality (mild, OR 3.52 [95% CI 1.91-6.49]; severe, OR 18.71 [95% CI 6.85-51.12]) and post-radiotherapy mortality (mild, OR 2.23 [95% CI 1.56-3.19]; severe, OR 9.33 [95% CI 4.83-18.01]) and with reduced overall survival (mild, HR 1.39, [95% CI 1.31-1.48]; severe, HR 2.41 [95% CI 2.00-2.90]). That was also the case for relative survival in unadjusted analyses (mild, EHR 1.77 [95% CI 1.64-1.92]; severe, EHR = 4.15 [95% CI 3.43-5.02]). CONCLUSION: Comorbidity is significantly related to therapeutic delay, post-treatment mortality, 5-year overall and relative survival in HNSCC patients. Therapeutic decision support tools should optimally integrate comorbidity.

Impact of shortened length of stay for delivery on the required bed capacity in maternity services: results from forecast analysis on administrative data.

BACKGROUND: We examine the implications of reducing the average length of stay (ALOS) for a delivery on the required capacity in terms of service volume and maternity beds in Belgium, using administrative data covering all inpatient stays in Belgian general hospitals over the period 2003-2014. METHODS: A projection model generates forecasts of all inpatient and day-care services with a time horizon of 2025. It adjusts the observed hospital use in 2014 to the combined effect of three evolutions: the change in population size and composition, the time trend evolution of ALOS, and the time trend evolution of the admission rates. In addition, we develop an alternative scenario to evaluate the impact of an accelerated reduction of ALOS. RESULTS: Between 2014 and 2025, we expect the number of deliveries to increase by 4.41%, and the number of stays in maternity services by 3.38%. At the same time, a reduction in ALOS is projected for all types of deliveries. The required capacity for maternity beds will decrease by 17%. In case of an accelerated reduction of the ALOS to reach international standards, this required capacity for maternity beds will decrease by more than 30%. CONCLUSIONS: Despite an expected increase in the number of deliveries, future hospital capacity in terms of maternity beds can be considerably reduced in Belgium, due to the continuing reduction of ALOS.

Patients with dementia in hospitals: a nation-wide analysis of administrative data 2010-2014.

PURPOSE: Considering the limited information available, the aim of the study was to examine the prevalence and characteristics of inpatients with dementia in Belgian general hospitals. METHODS: All admissions of inpatients aged at least 40 years with or without dementia were retrieved from the nationwide administrative hospital discharges database for the period 2010-2014. RESULTS: Admissions of inpatients aged 40 years or more with dementia have increased to reach 83,017 out of 1,285,593 admissions (6.46%) in general hospitals in 2014, mostly admitted through the emergency department (79.7%) and for another reason than dementia (85.9%). These patients stayed longer [19.2 days, standard deviation (sd) = 23.6, median = 13] than the average length of stay of patients of the same age (7.9 days, sd = 14.1, median = 17). Considering patients aged 75 years or more falling into the 20 most common pathology groups (of patients with dementia), the group with dementia spent 5 days more than the group without dementia. Patients admitted from home spent more time in hospital when they were discharged to a residential care facility than when they returned home (27.2 days versus 15.8 days). The in-hospital mortality was high in the first days of admission. CONCLUSIONS: The growing prevalence of patients with dementia in inpatient setting puts a high pressure on the hospital capacity planning and geriatric expertise. Moreover, as patients with dementia should be kept outside hospitals when possible for safety and quality matters, long-term organizational investments are required inside hospital and residential care settings as well as in community care.

How to optimize the prescription of laboratory tests? Success and failures in an academic hospital.

In the context of the flat-rate reimbursements in healthcare, we reviewed physicians' behavior towards laboratory test ordering. We demonstrated how it could be improved when a specific stage of the patient management is considered. We took a multi-step approach to analyze the laboratory test orders in the context of planned laparoscopic cholecystectomy in a general teaching hospital. A reference order set was defined through a collaborative analysis between clinicians and laboratory physicians. The clinical and financial impacts were then evaluated over a period of 24 months. After the introduction of the reference order set, the number of laboratory tests per order decreased significantly for patients with cholecystitis of low severity. Above the monitoring of repeated orderings during a single stay, the major impacts were achieved by a drastic reduction of inappropriate orders, particularly in the field of bacteriology. The main effects of the order set were maintained throughout a follow-up period of 24 months. Our study demonstrated that, when considering laboratory test ordering optimization, reference order sets could achieve high levels of efficiency. To ensure high compliance to reference order sets, extensive collaboration between clinicians and laboratory physician is mandatory even if very sophisticated information systems are available.

Variability in elective day-surgery rates between Belgian hospitals - Analyses of administrative data explained by surgical experts.

BACKGROUND: In the last decades, day surgery has steadily and significantly grown in many countries, yet the increase has been uneven. There are large variations in day-surgery activity between countries, but also within countries between hospitals and surgeons. This paper explores the variability in day-care activity for elective surgical procedures between Belgian hospitals. MATERIALS AND METHODS: The administrative hospital data of all patients formally admitted in a Belgian hospital for inpatient or day-care surgery between 2011 and 2013 were analysed and summarized in graphs. During 11 expert meetings with ad-hoc surgical expert groups the variability in day-surgery share between hospitals was discussed in depth. RESULTS: The variability in day-care share between Belgian hospitals is considerable. For 37 out of 486 elective surgical procedures, the variability ranged between 0 and 100%. High national day-care rates do not preclude room for improvement for certain hospitals as for the majority of these procedures there are "low performers". According to the consulted clinical experts, the high variability in day-care share may for the greater part be explained by medical team related factors, customs and traditions, the lack of clinical guidelines, financial factors, organisational factors and patient related factors. CONCLUSION: If a further expansion of day surgery is envisaged in Belgium the factors that contribute to the current variability in day-surgery rates between hospitals should be addressed. In addition, a feedback system in which hospitals and health care providers have the figures on their percentage of procedures carried out in day surgery compared to other hospitals and care providers (benchmarking) and the monitoring of a number of quality indicators (e.g. unplanned readmission, unplanned inpatient stay, emergency department visit) should be installed.

Changes in the clinical features of older patients admitted from the emergency department.

Demographic changes and healthcare reforms may impact the profile of hospitalized older persons. In this study, we sought to compare the characteristics of two prospective cohorts recruited at a ten-year interval (1999, n=253-2009, n=355). They included older patients (≥75 years) admitted through the emergency department for at least 48 h in acute non-geriatric wards in the same university hospital. The exclusion criteria were patients who were admitted directly to the intensive care unit, who were dependent for all 6 Activities of Daily Living (ADL), who had recently suffered from a major stroke, or whose with a life expectancy of less than 3 months. Median age was higher in 2009 than in 1999 (83 vs. 81; p=0.020), with a higher proportion of those aged 85 years and over (p=0.026). Patients in the 2009 cohort were less likely to live in a nursing home (p=0.018), more dependent for the basic ADL (p<0.001), more independent for the instrumental ADL (p<0.001). They were more likely to have fallen in the previous year (p<0.001). They took more medications (p<0.001). Their length-of-stay was shorter (p<0.001), but they were more likely to be discharged to a rehabilitation center (p<0.001). They underwent more early re-admissions (p=0.020) and similar 3-month functional decline (p=0.614). In conclusion, within a decade, the social, functional and medical characteristics of older patients admitted to hospital have changed significantly. In view of the high consumption of in-patient services by this population, hospitals must adapt to these rapid changes.

Terminal patients in Belgian nursing homes: a cost analysis.

Policy makers and health care payers are concerned about the costs of treating terminal patients. This study was done to measure the costs of treating terminal patients during the final month of life in a sample of Belgian nursing homes from the health care payer perspective. Also, this study compares the costs of palliative care with those of usual care. This multicenter, retrospective cohort study enrolled terminal patients from a representative sample of nursing homes. Health care costs included fixed nursing home costs, medical fees, pharmacy charges, other charges, and eventual hospitalization costs. Data sources consisted of accountancy and invoice data. The analysis calculated costs per patient during the final month of life at 2007/2008 prices. Nineteen nursing homes participated in the study, generating a total of 181 patients. Total mean nursing home costs amounted to 3,243 € per patient during the final month of life. Total mean nursing home costs per patient of 3,822 € for patients receiving usual care were higher than costs of 2,456 € for patients receiving palliative care (p = 0.068). Higher costs of usual care were driven by higher hospitalization costs (p < 0.001). This study suggests that palliative care models in nursing homes need to be supported because such care models appear to be less expensive than usual care and because such care models are likely to better reflect the needs of terminal patients.

Significant rate of hepatitis B reactivation following kidney transplantation in patients with resolved infection.

BACKGROUND: Limited data is available on the risk of hepatitis B virus (HBV) reactivation in patients with resolved infection undergoing kidney transplantation. It is generally thought that this risk is negligible. OBJECTIVES: To evaluate the incidence of HBV reactivation in such patients, and the potential risk factors for reactivation. STUDY DESIGN: Retrospective cohort study including 93 patients transplanted with a kidney between 1995 and 2007 who had evidence of resolved HBV infection (HBsAg negative, anti-HBc positive, anti-HBs positive or negative, and normal liver enzymes). HBV reactivation was defined as HBsAg reversion with HBV DNA>2000 IU/mL. RESULTS: Six patients experienced HBsAg reversion followed by HBV reactivation, 3 within the first post-transplant year. Immunosuppression regimen was similar in patients with and without reactivation. Among patients with reactivation only one was positive for anti-HBs antibodies at time of transplantation; these were progressively lost before reactivation. The odds ratio for reactivation in patients without anti-HBs antibodies at transplantation compared to those with anti-HBs antibodies was 26 (95% CI [2.8-240.5], p=0.0012). In patients with anti-HBs antibody titer above 100 IU/L, no reactivation was observed. CONCLUSIONS: Reactivation rate of resolved hepatitis B is not negligible in patients without anti-HBs antibodies at transplantation. We suggest monitoring of liver tests and HBV serology including HBsAg and anti-HBs antibodies after transplantation as well as vaccination pre- and post-transplantation in all patients, including those with resolved hepatitis B, aiming at maintaining anti-HBs antibody level above 100 IU/L.

Positron-emission computed tomography in cyst infection diagnosis in patients with autosomal dominant polycystic kidney disease.

BACKGROUND: Cyst infection remains a challenging issue in patients with autosomal dominant polycystic kidney disease (ADPKD). In most patients, conventional imaging techniques are inconclusive. Isolated observations suggest that (18)fluorodeoxyglucose (¹8FDG) positron-emission computed tomography (PET/CT) might help detect cyst infection in ADPKD patients. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Comparative assessment of administrative databases from January 2005 to December 2009 identified 27 PET/CT scans performed in 24 ADPKD patients for suspicion of abdominal infection. Cyst infection was definite if confirmed by cyst fluid analysis. Cyst infection was probable if all four of the following criteria were met: temperature of >38°C for >3 days, loin or liver tenderness, C-reactive protein plasma level of >5 mg/dl, and no CT evidence for intracystic bleeding. Episodes with only two or three criteria were grouped as "fever of unknown origin". RESULTS: Thirteen infectious events in 11 patients met all criteria for kidney (n = 3) or liver (n = 10) cyst infection. CT was contributive in only one patient, whereas PET/CT proved cyst infection in 11 patients (84.6%). In addition, 14 episodes of "fever of unknown origin" in 13 patients were recorded. PET/CT identified the source of infection in nine patients (64.3%), including 2 renal cyst infections. Conversely, PET/CT showed no abnormal ¹8FDG uptake in 5 patients, including 2 intracystic bleeding. The median delay between the onset of symptoms and PET/CT procedure was 9 days. CONCLUSIONS: This retrospective series underscores the usefulness of PET/CT to confirm and locate cyst infection and identify alternative sources of abdominal infection in ADPKD patients.

Palliative inpatients in general hospitals: a one day observational study in Belgium.

BACKGROUND: Hospital care plays a major role at the end-of-life. But little is known about the overall size and characteristics of the palliative inpatient population. The aim of our study was to analyse these aspects. METHODS: We conducted a one-day observational study in 14 randomly selected Belgian hospitals. Patients who met the definition of palliative patients were identified as palliative. Then, information about their socio-demographic characteristics, diagnoses, prognosis, and care plan were recorded and analysed. RESULTS: There were 2639 in-patients on the day of the study; 9.4% of them were identified as "palliative". The mean age of the group was 72 years. The primary diagnosis was cancer in 51% of patients and the estimated life expectancy was shorter than 3 months in 33% of patients and longer than 1 year in 28% of patients. The professional caregivers expected for most of the patients (73%), that the treatment would improve patient comfort rather than prolong life. Antibiotics, transfusions, treatments specific to the pathology, and artificial nutrition were administered in 90%, 78%, 57% and 50% of the patients, respectively, but were generally given with a view to controlling the symptoms. CONCLUSIONS: This analysis presents a first national estimate of the palliative inpatient population. Our results confirm that hospitals play a major role at the end-of-life, with one out of ten inpatients identified as a "palliative" patient. These data also demonstrate the complexity of the palliative population and the substantial diversity of care that they can require.

Preparing renal replacement therapy in stage 4 CKD patients referred to nephrologists: a difficult balance between futility and insufficiency. A cohort study of 386 patients followed in Brussels.

BACKGROUND: KDOQI guidelines recommend preparation for renal replacement therapy (RRT) once stage 4 chronic kidney disease (CKD) is reached. Recent studies conducted in the general population and in patients referred to nephrologists have shown that CKD patients, especially the elderly, are much more likely to die than to reach RRT. We investigated whether futile preparation for RRT was performed in CKD patients referred to our nephrology department. METHODS: We included all patients (n = 386) with stage 4 CKD and without prior RRT, seen at our outpatient clinic between 1 November 2004 and 30 April 2007. Demographics, clinical and laboratory data at inclusion were collected. Follow-up continued until 1 November 2007 or later (last appointment or study outcome). The primary outcome was death without requiring RRT, and secondary outcomes were RRT, going through our pre-dialysis education programme (PDEP) and undergoing the creation of an arterio-venous fistula (AVF). Factors predicting these outcomes were analysed. RESULTS: During complete follow-up (average 23.4 months), 47 patients (12.1%) died without requiring RRT and 59 patients (15.3%) started RRT. The rate of death without requiring RRT in the overall cohort increased from 50 years onwards and exceeded that of RRT in incident patients aged ≥ 80 years. A structured PDEP was offered to 66.1% of patients starting RRT vs 14.9% of patients dying without requiring RRT and 13.9% of patients surviving without requiring RRT (P < 0.001). In addition, 53.3% of patients starting haemodialysis had a prior AVF creation vs 6.4% of patients dying without requiring RRT and 5.7% of patients surviving without requiring RRT (P < 0.001). CONCLUSIONS: The risk of death exceeds that of RRT in stage 4 CKD incident patients aged ≥ 80 years referred to our clinic. Futile preparation for RRT was relatively uncommon (14.9%). We were able to largely avoid futility at the expense of incomplete exposure of patients who eventually started RRT, to the structured PDEP, and of a relatively low (53%) level of AVF created prior to start of HD. Whether and how these figures can be improved will require further investigation.

Costs of terminal patients who receive palliative care or usual care in different hospital wards.

BACKGROUND: In addition to the effectiveness of hospital care models for terminal patients, policy makers and health care payers are concerned about their costs. This study aims to measure the hospital costs of treating terminal patients in Belgium from the health care payer perspective. Also, this study compares the costs of palliative and usual care in different types of hospital wards. METHODS: A multicenter, retrospective cohort study compared costs of palliative care with usual care in acute hospital wards and with care in palliative care units. The study enrolled terminal patients from a representative sample of hospitals. Health care costs included fixed hospital costs and charges relating to medical fees, pharmacy and other charges. Data sources consisted of hospital accountancy data and invoice data. RESULTS: Six hospitals participated in the study, generating a total of 146 patients. The findings showed that palliative care in a palliative care unit was more expensive than palliative care in an acute ward due to higher staffing levels in palliative care units. Palliative care in an acute ward is cheaper than usual care in an acute ward. CONCLUSIONS: This study suggests that palliative care models in acute wards need to be supported because such care models appear to be less expensive than usual care and because such care models are likely to better reflect the needs of terminal patients. This finding emphasizes the importance of the timely recognition of the need for palliative care in terminal patients treated in acute wards.

The costs of treating terminal patients.

CONTEXT: In addition to the effectiveness of terminal care, policy makers and health care payers are concerned about the costs of treating terminal patients in a context of spiraling health care costs and limited resources. OBJECTIVES: This article aims to review the international literature on the costs of treating terminal patients. METHODS: Studies were identified by searching PubMed, Centre for Reviews and Dissemination databases, Cochrane Database, and EconLit, up to April 2009. Studies were included that contrasted costs in different health care settings and that compared palliative care with alternative therapeutic approaches for terminal patients. RESULTS: The few studies that focused on treatment of terminal patients across health care settings showed that hospitalization costs represent the principal component of palliative care costs. In the hospital setting, palliative care tends to be cheaper than usual care or care delivered in units other than the palliative care unit. Palliative care costs depend on patient characteristics, such as diagnosis, status of disease, and age. Also, different care models appear to target different patient groups and offer varied packages of services. Finally, there is some evidence pointing to cost advantages of palliative care at home as compared with alternative care models, although this needs to be corroborated by further research. CONCLUSION: Different approaches to deliver palliative care are not substitutes of each other and, thus, have different costs. From a cost perspective, hospitals need to pay attention to admitting patients to the palliative care unit at the right time.

Comparing the quality of care across Belgian hospitals from medical basic datasets: the case of thromboembolism prophylaxis after major orthopaedic surgery.

RATIONALE, AIMS AND OBJECTIVES: In the current context, the assessment of the quality of care in daily clinical practice becomes essential. The aim of this study was to use medical basic datasets associated with information on pharmacological treatments to assess the quality of care of a prophylaxis treatment after major orthopaedic surgery and to compare hospitals' clinical practices. METHODS: The study was performed in 20 Belgian hospitals. Patients who underwent total hip replacement (THR), total knee replacement (TKR), or hip fracture surgery (HFS) were selected retrospectively from the hospitals' 2002 and 2003 administrative databases (n = 14,991). Quality indicators assessed were incidence of venous thromboembolism, major bleeding and death. Prophylaxis analysed were enoxaparin, nadroparin and fondaparinux. RESULTS: Venous thromboembolism and major bleeding events were rare (1.9% and 1.1% respectively). Patients who underwent HFS were at greater risk of having pulmonary embolism [OR = 2.01; confidence interval (CI) = 1.38-2.92; P = 0.0002], major bleeding (OR = 4.00; CI = 2.93-5.46; P < 0.0001) or death from any cause (OR = 8.86; CI = 6.85-11.45; P < 0.0001) than patients who underwent THR or TKR. Multivariate analyses showed that the hospital variable had a significant impact on the probability to have adverse events and that patients who received enoxaparin were at greater risk of death than patients who received nadroparin (OR(enoxaparin vs fraxiparin) = 1.59; 95% CI = 1.04-2.44; P = 0.033). CONCLUSION: Results indicate that differences in thromboembolism prophylaxis practices among hospitals have a significant impact on adverse events. This reinforces the need to develop data-processing tools that enable better monitoring of quality of care.

Cost-effectiveness analysis of FDG PET-CT in the management of pulmonary metastases from malignant melanoma.

OBJECTIVES: Most guidelines consider FDG PET-CT to detect occult extra-pulmonary disease prior to lung metastasectomy. A cost-effectiveness analysis, using a Markov model over a 10 year period, was performed to compare two different surveillance programs, either PET-CT or whole-body CT, in patients with suspected pulmonary metastasised melanoma. METHODS: Data from published studies provided probabilities for the model. Complication and care costs were obtained from standardised administrative databases from 19 hospitals identified by DRG codes (reported in 2009 Euros). For the cost calculation of PET-CT we performed a microcosting analysis. All costs and benefits were yearly discounted at respectively 3% and 1.5%. Outcomes included life-months gained (LMG) and the number of futile surgeries avoided. Cost-effectiveness ratios were in Euros per LMG. Univariate and probabilistic sensitivity analyses addressed uncertainty in all model parameters. RESULTS: The PET-CT strategy provided 86.29 LMG (95% CI: 81.50-90.88 LMG) at a discounted cost of euro3,974 (95% CI: euro1,339-12,303), while the conventional strategy provided 86.08 LMG (95% CI: 81.37-90.68 LMG) at a discounted cost of euro5,022 (95% CI: euro1,378-16,018). This PET-CT strategy resulted in a net saving of euro1,048 with a gain of 0.2 LMG. Based on PET-CT findings, 20% of futile surgeries could be avoided. CONCLUSION: Integrating PET-CT in the management of patients with high risk MM appears to be less costly and more accurate by avoiding futile thoracotomies in one of five patients as well as by providing a small survival benefit at 10 years.

Absence of recurrent stroke after percutaneous closure of patent foramen ovale despite residual right-to-left cardiac shunt assessed by transcranial Doppler.

BACKGROUND: Percutaneous transcatheter closure of patent foramen ovale has been proposed to prevent recurrent strokes in young adults. Contrast transcranial Doppler ultrasonography provides a functional, semiquantitative evaluation of right-to-left cardiac shunt. AIMS: To evaluate the efficacy of percutaneous closure of patent foramen ovale in suppressing right-to-left shunt (assessed using transcranial Doppler) and in preventing secondary stroke. METHODS: Sixty-six patients less than 55 years of age were selected from 81 consecutive patients evaluated for percutaneous closure of patent foramen ovale after one or more cryptogenic stroke. All patients presented with a right-to-left cardiac shunt and passage of more than 50 microbubbles or curtain pattern on transcranial Doppler. Follow-up tests included cardiac and neurological clinical evaluation, contrast transcranial Doppler, and echocardiography. RESULTS: Percutaneous closure was successful in all patients, without major persistent side-effects. Before closure, the rate of recurrent stroke events was 16.57 per 100 patient-years; after closure, no recurrent stroke events (including transient ischaemic attacks) occurred during a mean follow-up period of 3.73 years (p=0.0001). Contrast transcranial Doppler detected residual right-to-left cardiac shunt in 25/60 (41.7%) patients evaluated after 12 months; 20.0% of these patients had passage of more than 50 microbubbles on transcranial Doppler. CONCLUSION: Contrast transcranial Doppler is a useful tool in the selection of patients for percutaneous closure of patent foramen ovale. The absence of recurrent stroke events after transcatheter closure suggests that this procedure may prevent stroke by changing the foramen ovale configuration, even in cases of persisting shunt. Larger studies are needed to confirm these data.

Comparison of three instruments assessing the quality of economic evaluations: a practical exercise on economic evaluations of the surgical treatment of obesity.

OBJECTIVES: The increasing use of full economic evaluations has led to the development of various instruments to assess their quality. The purpose of this study was to compare the frequently used British Medical Journal (BMJ) check-list and two new instruments: the Consensus Health Economic Criteria (CHEC) list and the Quality of Health Economic Studies (QHES) instrument. The analysis was based on a practical exercise on economic evaluations of the surgical treatment of obesity. METHODS: The quality of nine selected studies was assessed independently by two health economists. To compare instruments, the Spearman rank correlation coefficient was calculated for each assessor. Moreover, the test-retest reliability for each instrument was assessed with the intraclass correlation coefficient (ICC) (3,1). Finally, the inter-rater agreement for each instrument was estimated at two levels: comparison of the total score of each article by the ICC(2,1) and comparison of results per item by kappa values. RESULTS: The Spearman's rank correlation coefficient between instruments was usually high (rho > 0.70). Furthermore, test-retest reliability was good for every instruments, that is, 0.98 (95 percent CI, 0.86-0.99) for the BMJ check-list, 0.97 (95 percent CI, 0.73-0.98) for the CHEC list, and 0.95 (95 percent CI, 0.75-0.99) for the QHES instrument. However, inter-rater agreement was poor (kappa < 0.40 for most items and ICC(2,1) < or = 0.5). CONCLUSIONS: The study shows that the results of the quality assessment of economic evaluations are not so much influenced by the instrument used but more by the assessor. Therefore, quality assessments should be performed by at least two independent experts and final scoring based on consensus.

Assessing the quality of pharmacological treatments from administrative databases: the case of low-molecular-weight heparin after major orthopaedic surgery.

RATIONALE, AIMS AND OBJECTIVES: 'Real world data' are needed to assess the quality of pharmacological treatments in clinical practice. The aim of this study was to determine whether administrative databases can be used to assess the quality of prophylaxis with low-molecular-weight heparin after major orthopaedic surgery. METHODS: The study was performed in a Belgian university hospital. Patients undergoing total hip replacement (THR), total knee replacement (TKR) or hip fracture surgery (HFS) were selected retrospectively from the hospital's 2002 and 2003 administrative databases. Readmissions during the same year as the procedure were also analysed. Three quality indicators were assessed: incidence of venous thromboembolism (VTE), major bleeding and death; adherence to guidelines; and the costs of care. RESULTS: Although 70% of data were collected from administrative databases, patients' records also had to be examined. During the period studied, VTE and major bleeding events were rare. Patients undergoing HFS were at greater risk of having a pulmonary embolism [Exact odds ratio (OR)=3.78; 95% confidence interval (CI)=1.13-16.22; P=0.03] or of death from any cause (Exact OR=2.15; 95% CI=1.52-infinity; P<0.01) than patients undergoing THR or TKR. The hospital's prophylaxis protocol was not always followed. Half the patients received higher prophylaxis doses than recommended and 11% received lower doses but no impact on adverse events was demonstrated. CONCLUSION: Results show that administrative databases contain enough information to measure the frequency of adverse events but complementary data on patient weight and on non-reimbursed drugs must be extracted from the patients' records to evaluate adherence to guidelines. Our findings stress the need for better integration of information systems.