Effects of inaccuracies in arterial path length measurement on differences in MRI and tonometry measured pulse wave velocity

Abstract Background Carotid-femoral pulse wave velocity (cf-PWV) and aortic PWV measured using MRI (MRI-PWV) show good correlation, but with a significant and consistent bias across studies. The aim of the current study was to evaluate whether the differences between cf.-PWV and MRI-PWV can be accounted for by inaccuracies of currently used distance measurements. Methods One hundred fourteen study participants were recruited into one of 4 groups: Type 2 diabetes melltus (T2DM) with cardiovascular disease (CVD) (n = 23), T2DM without CVD (n = 41), CVD without T2DM (n = 25) and a control group (n = 25). All participants underwent cf.-PWV, cardiac MRI and whole body MR angiography(WB-MRA). 90 study participants also underwent aortic PWV using MRI. cf.-PWVEXT was performed using a SphygmoCor device (Atcor Medical, West Ryde, Australia). The true intra-arterial pathlength was measured using the WB-MRA and then used to recalculate the cf.-PWVEXT to give a cf.-PWVMRA. Results Distance measurements were significantly lower on WB-MRA than on external tape measure (mean diff = −85.4 ± 54.0 mm,p < 0.001). MRI-PWV was significantly lower than cf.-PWVEXT (MRI-PWV = 8.1 ± 2.9 vs. cf.-PWVEXT = 10.9 ± 2.7 ms−1,p < 0.001). When cf.-PWV was recalculated using the inter-arterial distance from WB-MRA, this difference was significantly reduced but not lost (MRI-PWV = 8.1 ± 2.9 ms−1 vs. cf.-PWVMRA 9.1 ± 2.1 ms−1, mean diff = −0.96 ± 2.52 ms−1,p = 0.001). Recalculation of the PWV increased correlation with age and pulse pressure. Conclusion Differences in cf.-PWV and MRI PWV can be predominantly but not entirely explained by inaccuracies introduced by the use of simple surface measurements to represent the convoluted arterial path between the carotid and femoral arteries

Patient characteristics and treatment patterns in patients on lipid-lowering therapies following an acute coronary syndrome in France

International audienc

CLINICAL AND ECONOMIC BURDEN FOLLOWING OSTEOPOROSIS-RELATED FRACTURE(S) IN FRANCE

International audienc

The clinical and economic burden after an osteoporosis fracture in France: a nationwide population-based study

International audienceOsteoporosis-related fragility fractures increase the risk of subsequent fractures and are associated with substantial morbidity and mortality. Emphasis should be placed on the prevention of recurrent fractures, which will decrease both the clinical burden on patients and the economic burden on the health system. Introduction Fragility fractures are associated with increased morbidity and mortality. Quantifying the clinical and economic burden of subsequent fractures following an initial osteoporosis-related fracture is a key to informing public health policies. Methods A retrospective cohort study, using the national French health insurance claims database. Males and females >= 50 years, with a hospital discharge diagnosis of osteoporosis with fracture or a relevant fragility fracture (hip, vertebrae, femur, pelvis, wrist/hand, forearm, humerus/clavicle) between 2011 and 2014, were included and followed until death or end of 2016, whichever came first. Index fracture was the first qualifying hospitalization; subsequent fractures were defined as those occurring either at a different site from the index fracture or at the same site >= 90 days apart. Costs abstracted included hospitalization, external consultation, outpatient visits, and treatment. Results A total of 544,426 participants (132,148 [24.3%] males and 412,278 [75.7%] females), of whom 16,110 (12.2%) males and 73,538 (17.8%) females had at least one subsequent fracture during follow-up, were included. Incidence of subsequent fracture was highest in the first year following index fracture. During follow-up, 161,179 patients died; mortality was highest among those with a hip fracture at index (29,971 (51.6%) males and 65,254 (39.6%) females). Total mean costs per patient in the year following index fracture were highest for males and females with a hip fracture (euro18,585 and euro15,754, respectively). Conclusion Subsequent fractures among osteoporotic participants with an initial fracture result in increased clinical mortality and high healthcare resource use. Emphasis should be placed on the prevention of recurrent fractures

Clinical and pathologic features of patients with non-epithelial ovarian cancer: retrospective analysis of a single institution 15-year experience

[Purpose] Non-epithelial ovarian cancers (NEOCs) are rare diseases. Despite their overall good prognosis, the best management and current prognostic factors remain unclear. The objective of our study was to assess the clinical and pathological features of NEOC patients treated in our institution in the last 15 years and to explore risk factors for relapse and survival.[Methods/patients] All patients with a pathological diagnosis of NEOC referred to the medical oncology department at Hospital Universitario Virgen del Rocio between 1999 and 2014 were included. Demographics, tumor characteristics, treatment procedures, and clinical follow-up were retrospectively collected. Risk factors for disease-free survival (DFS) and overall survival (OS) were assessed.[Results] Fifty-seven patients were included, 33 (58 %) had a sex cord-stromal tumor (SCST) and 24 (42 %) had a germ-cell tumor (GCT). Median age, non-conservative surgery rates and DFS were lower in the GCT cohort; however, salvage chemotherapy led to a high proportion of complete responses in this group translating into a 90 % 3-year OS rate in both NEOC subtypes. The only identified risk factors statistically significant were stage and tumour relapse that associated, respectively, with DFS (HR = 8.84; 95 % CI 1.85–42) and OS (HR = 11.02; 95 % CI 1.76–68.7).[Conclusions] Despite their rarity, NEOCs remain a highly curable group of neoplasm. In our series, a more conservative treatment approach in ovarian GCTs revealed comparable OS outcomes to SCST. No new risk factors that would help in patient stratification were identified