In addition, Cox regression models were used to estimate the risk

In addition, Cox regression models were used to estimate the risk of developing anuria. In a second approach, we aimed to repeat the above analyses in a selected group of patients that theoretically could have been randomized and therefore resembled the population this website studied in the

2 mentioned RCTs. In this group the follow-up was restricted to 1 year.

Results: 201 patients were treated with ACEi/ARBs and 251 did not take these drugs at the start of PD. More patients from the treated group had diabetes and used more antihypertensive medications. The time course of decline of rGFR was not different between the 2 groups over the 3 years of PD treatment (p = 0.52). Less than 25% of patients from each group became anuric and there was no difference in time to development of complete anuria between the treated and untreated groups. In the second approach, 130 patients

were included: 37 were treated with ACEi/ARBs and 93 were not. Again, no difference was found between the 2 groups with respect to the rate of decline of rGFR and time of anuria development.

Conclusion: Our findings are not in line with the results of previous RCTs. The biggest limitation of observational studies is the inability to avoid confounding by indication. However, a RCT in such a setting also does not give a reliable answer. Given all the benefits of ACEi/ARBs, the medications should not be withheld from PD patients. However, their renoprotective effects may often be overruled by other factors influencing the time course of rGFR.”
“Background: Malaria is one of the most important infectious diseases in the world. Although Citarinostat chemical structure most cases are found distributed in the tropical regions of Africa, Asia, Central Prexasertib price and

South Americas, there is in Europe a significant increase in the number of imported cases in non-endemic countries, in particular due to the higher mobility in today’s society.

Methods: The prevalence of a possible asymptomatic infection with Plasmodium species was assessed using Nucleic Acid Sequence Based Amplification (NASBA) assays on clinical samples collected from 195 study cases with no clinical signs related to malaria and coming from sub-Saharan African regions to Southern Italy. In addition, base-line demographic, clinical and socioeconomic information was collected from study participants who also underwent a full clinical examination.

Results: Sixty- two study subjects (31.8%) were found positive for Plasmodium using a pan Plasmodium specific NASBA which can detect all four Plasmodium species causing human disease, based on the small subunit 18S rRNA gene (18S NASBA). Twenty-four samples (38%) of the 62 18S NASBA positive study cases were found positive with a Pfs25 mRNA NASBA, which is specific for the detection of gametocytes of Plasmodium falciparum. A statistically significant association was observed between 18S NASBA positivity and splenomegaly, hepatomegaly and leukopaenia and country of origin.


“Purpose: To develop and verify the accuracy of a rapid im


“Purpose: To develop and verify the accuracy of a rapid imaging protocol for delayed gadolinium-enhanced magnetic resonance (MR) imaging of cartilage that was based on three-dimensional (3D) spoiled gradient-recalled acquisition in the steady state (SPGR) sequences with variable flip angles (FAs) (VFAs) and where

a correction method for B-1 field inhomogeneities was applied.

Materials and Methods: The institutional research ethics board approved this study. Written informed consent was obtained from all subjects. A B1 field inhomogeneity correction method was applied to a 3D SPGR pulse sequence with VFAs (repetition time msec/echo time msec, 7.1/3.3; FAs, 2 degrees, 5 degrees, 10 degrees, and 20 degrees) and was used to perform delayed gadolinium-enhanced MR imaging of cartilage 3D T1 measurements at 1.5 T. The 3D T1 measurements were validated with the reference standard ( the results of T1 mapping by using a single-section Galardin mw two-dimensional [2D] inversion-recovery [IR] fast spin-echo [SE] pulse sequence in vitro

and in vivo) in six healthy volunteers.

Results: Vorinostat cell line T1 values calculated from 3D T1 maps were not significantly different from reference T1 values in vitro (P = .195) and in vivo (P = .52) when a B1 field inhomogeneity correction method was applied. In vivo T1 mapping of the articular surface of the whole femoropatellar joint, including data acquisition, was performed in approximately 8 minutes of acquisition time at a spatial resolution of 0.55 x 0.55 x LY2606368 clinical trial 3.00 mm.

Conclusion: Rapid T1 mapping by using 3D SPGR acquisitions with a VFA approach and a correction for B1 field inhomogeneities can be used for delayed gadolinium-enhanced MR imaging of cartilage. T1 measurements performed in vitro and in vivo by using this approach are highly accurate when compared with those performed by using standard 2D IR fast SE T1 mapping as a reference.”
“ObjectiveThe aim of this study is to examine factors contributing to cancer-related fatigue (CRF) in breast

cancer patients who have undergone surgery.

MethodsSixty women (mean age: 50.0) completed self-rated questionnaires assessing components of CRF, muscular and cognitive functions. Also, physiological and subjective data were gathered. Data were analyzed using partial least squares variance-based structural equation modeling in order to examine factors contributing to CRF after breast surgery.

ResultsThe tested model was robust in terms of its measurement quality (reliability and validity). According to the structural model results, emotional distress (=0.59; p<0.001), pain (=0.23; p<0.05), and altered vigilance (=0.30; p<0.05) were associated with CRF, accounting for 61% of the explained variance. Also, emotional distress (=0.41; p<0.05) and pain (=0.40; p<0.05) were related to low physical function and accounted for 41% of the explained variance. However, the relationship between low physical function and CRF was weak and nonsignificant (=0.

The mean LV end-diastolic volume, end-systolic volume, and ejecti

The mean LV end-diastolic volume, end-systolic volume, and ejection fraction were 93 mL +/- 8, 46 mL +/- 4, and 50% +/- 3, respectively, on multidetector CT images and 92 mL 6 8, 48 mL +/- 5, and 48% +/- 3, respectively, on MR images (P >= .05). The extent of heterogeneous microinfarct was not significantly different between multidetector CT (6.3% +/- 0.8 of the LV mass), MR imaging (6.6% +/- 0.5 of the LV mass), and TTC

staining selleck products (7.0% +/- 0.6 of the LV mass). First-pass multidetector CT and MR imaging demonstrated significant regional differences ( P,.05) in time to peak between the heterogeneous microinfarct and remote myocardium (17.0 seconds +/- 0.3 and 12.4 seconds +/- 0.6, respectively, for multidetector CT and 17.2 seconds +/- 0.8 and 12.5 seconds +/- 1.0, respectively, for MR imaging).

Conclusion: Modern multidetector CT and MR imaging are sensitive modalities with which to depict heterogeneous microinfarcts and determine regional LV dysfunction and decreased perfusion in the territory of intervention. (C) RSNA, 2010″
“Objectives: Seasonal variations in ultraviolet B (UVB) radiation cause seasonal variations

in vitamin D status. This may influence immune responses and play a role in the seasonality of influenza.

Methods: Pandemic and non-pandemic influenzas in Sweden, Norway, the USA, Singapore, and Japan were studied. Weekly/monthly BEZ235 influenza incidence and death rates were evaluated in view of monthly UVB fluences.

Results: Non-pandemic influenzas mostly occur in the winter season in temperate regions. UVB calculations show that at high latitudes very little, if selleck inhibitor any, vitamin D is produced in the skin during the winter. Even at 26 degrees N (Okinawa) there is about four times more UVB during the summer than during

the winter. In tropical regions there are two minor peaks in vitamin D photosynthesis, and practically no seasonality of influenza. Pandemics may start with a wave in an arbitrary season, while secondary waves often occur the following winter. Thus, it appears that a low vitamin D status may play a significant role in most influenzas.

Conclusions: In temperate latitudes even pandemic influenzas often show a clear seasonality. The data support the hypothesis that high fluences of UVB radiation (vitamin D level), as occur in the summer, act in a protective manner with respect to influenza. (C) 2010 International Society for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.”
“Purpose: To prospectively evaluate magnetic resonance ( MR) signal abnormalities and the time course of T1 and T2 values in a rabbit model of acute nerve traction injury with histologic and functional recovery correlation.

Materials and Methods: All experimental protocols were approved by the institutional animal use and care committee. Acute traction injury was produced in the sciatic nerve of one hind limb in each of 28 rabbits.

Forty-six percent of the HBsAg-positive persons were below 20 yea

Forty-six percent of the HBsAg-positive persons were below 20 years of age. On follow-up 1 year later a total of 68% of the HBsAg-positive persons were HDV-IgG positive. Five children, who were HBsAg-positive in 2006, had HDV-seroconverted from 2006 to 2007, indicating a HDV-super-infection. Most of the HDV-IgG positive children had markedly elevated liver enzymes. In the multivariate analysis, among the HBV and HDV markers, presence of HDV-IgG was most strongly associated with elevation of liver enzymes. In

conclusion, the HBV-HDV super-infection and presumed HDV outbreak in this settlement challenges the notion that HBV infection may not be as harmless in Greenland as previously anticipated.

selleck products LY3023414 molecular weight The findings strongly suggest that HBV vaccination should be included in the child-immunization program in Greenland.”
“Cardiac tamponade caused by gynecologic malignancies are extremely rare.

A 56-year-old woman was referred to our hospital with vaginal bleeding and abdominal distension. Computed tomography showed massive peritoneal fluid, peritoneal dissemination, swelling of the paraaortic lymph nodes and liver metastasis. Endometrial biopsy showed an admixture of both carcinomatous and sarcomatous elements. The final pathological diagnosis was uterine carcinosarcoma, homologous type. After four cycles of chemotherapy consisting of ifosfamide, adriamycin, and cisplatin, we performed laparotomy, and then two additional courses of chemotherapy were administered postoperatively. Eight months after chemotherapy, echocardiography demonstrated massive pericardial effusion with features of tamponade such as diastolic compression of the right ventricle. Cytological examination of the pericardial fluid showed two different cellular patterns, epithelial and non-epithelial components.

Although cardiac tamponade is rare and has a poor prognosis, it is important for physicians to consider this possibility in the course of treating of uterine carcinosarcoma.”
“Objectives The anesthesia

preoperative screening and evaluation of a patient prior to surgery is a critical element in the safe and effective delivery MI-503 of anesthesia care. In this era of increased focus on cost containment, many anesthesia practices are looking for ways to maximize productivity while maintaining the quality of the preoperative evaluation process by harnessing and optimizing all available resources. We sought to develop a Nurse Practitioner-assisted Preoperative Anesthesia Screening process using quality improvement methods with the goal of maintaining the quality of the screening process, while at the same time redirecting anesthesiologists time for the provision of nonoperating room (OR) anesthesia.


“Aim: Retained placenta is an important cause of maternal


“Aim: Retained placenta is an important cause of maternal mortality. The present study was aimed to determine the efficacy of umbilical injection of oxytocin as a treatment modality in this condition. Material and Methods: This was a single-center randomized controlled trial incorporating 58 women with retained placenta of more than 30 min, equally distributed into two study arms

buy PF-6463922 of intra-umbilical injection of oxytocin (50 IU oxytocin diluted with normal saline [NS] to a total volume 30 mL) and intra-umbilical injection of NS (30 mL). Primary outcome was expulsion of the placenta within 30 min following intervention. All the data were analyzed on an intention-to-treat basis. Results: The success rate in the intra-umbilical oxytocin group was 51.72% compared to 20.69% in the control arm. This difference in the primary outcome was statistically significant with a P-value < 0.05 (P =

0.014) favoring intra-umbilical oxytocin infusion with an efficacy rate of 1.5 and a number-needed-to-treat of 3. The peripartum bleeding complications were more in the NS group with a statistically higher (P < 0.001) requirement of extra oxytocin to control post-partum bleeding. There were no differences between the two groups in respect to other secondary outcomes, such as post-partum fever, antibiotic requirement and hospital stay. Conclusion: Umbilical vein injection of 50 IU oxytocin in 30 mL of NS delivered effectively via the see more umbilical cord with milking in cases of retained placenta seems a simple and promising technique to reduce the incidence of a potentially morbid procedure and other complications.”
“Contamination in coastal zones is an increasing problem that adversely affects biological diversity and the functioning of coastal ecosystems. Sediment is an important

compartment of these zones since large quantities of diverse contaminants DAPT cost can accumulate there. Whole-sediment toxicity assays are of increasing importance, and several assay methods using mainly invertebrates have been developed. However, an important part of the benthic community, the microphytobenthos (represented principally by benthic diatoms and cyanobacteria), has surprisingly been neglected. Recently, comprehensive studies have been conducted using benthic marine microalgae with the object of establishing a toxicity assay method for sediment samples. The main results published to date in the literature and obtained by our own team have been compiled and are discussed in this review. The value and feasibility of using certain organisms of the microphytobenthos group in ecotoxicology studies are also discussed, and a sediment quality guideline based on multivariate procedure has been derived from data obtained in previous studies. Finally, future perspectives for research in this field are discussed. (C) 2010 Elsevier Ltd. All rights reserved.”
“Aim: Prenatal exposure to dioxins may result in many adverse health effects.

(C) 2011 Wiley Periodicals, Inc J Appl Polym

Sci 121: 37

(C) 2011 Wiley Periodicals, Inc. J Appl Polym

Sci 121: 3724-3732, 2011″
“Quantifying kill rates and sources of variation in kill rates remains an important challenge in linking predators to their prey. We address current approaches to using global positioning system (GPS)-based movement data for quantifying key predation components of large carnivores. We review approaches to identify kill sites from GPS movement data as a means to estimate kill rates and address advantages of using GPS-based data over past approaches. Despite considerable progress, modelling the probability that a cluster of GPS points is a kill site is no substitute for field visits, but can guide our field efforts. Once kill sites are identified, time spent at a kill site (handling time) and time between kills (killing time) can be determined. We show how statistical models can be SHP099 nmr used to investigate the influence of factors such as animal characteristics (e. g. age, sex, group size) and landscape features on either

handling time or killing efficiency. If we know the prey densities along paths to a kill, we can quantify the `attack success’ IPI-145 research buy parameter in functional response models directly. Problems remain in incorporating the behavioural complexity derived from GPS movement paths into functional response models, particularly in multi-prey systems, but we believe that exploring the details of GPS movement data has put us on the right path.”
“We report the observation of magnetic entropy change due to martensitic phase transformations of bulk off-stoichiometric Heusler alloys with compositions Ni46Mn43Sn11, Ni44Mn43Co2Sn11, and Ni44Mn43Cu2Sn11, prepared by arc melting method. The martensitic transition of the parent ternary alloy

(Ni46Mn43Sn11) shifts to lower temperatures upon Co and Cu substitution. Inverse magnetocaloric effect was observed in these alloys near the martensitic transformation temperature when subjected to an applied magnetic field. Ni46Mn43Sn11, Ni44Mn43Co2Sn11, and Ni44Mn43 Cu2Sn11 alloys exhibited maximum positive magnetic entropy change of 7.9, 11.3, and 18.8 J kg(-1) K-1, respectively, under an applied magnetic field GSK1838705A mw of 1.8 T. (C) 2011 American Institute of Physics. [doi:10.1063/1.3540327]“
“Since the publication in 2009 of clinical practice guidelines for the management of hepatitis B virus (HBV) infection by the European Association for the Study of the Liver (EASL), a wealth of new data has emerged regarding the antivirals most commonly used to treat chronic hepatitis B. This review will summarise the most recent knowledge on these drugs, and how this may affect current and future management of HBV infection.

In this work, the elastic

In this work, the elastic see more properties and structural parameters of cubic single crystals as well as tetragonal, orthorhombic, and rhombohedral BaTiO3 single domain states are obtained using first-principles calculations under the local density approximation. The calculated lattice constants, bulk modulus, and elastic constants are in good agreement

with experiments for both the cubic paraelectric phase and the low-temperature ferroelectric phases. Spontaneous polarizations for all three ferroelectric phases and the electrostrictive coefficients of cubic BaTiO3 are also computed using the Berry’s phase approach, and the results agree well with existing experimentally measured values. (C) 2010 American Institute of Physics. [doi:10.1063/1.3462441]“
“To obtain accurate prediction of service performance and service life of polymers and to optimize the processing parameters, a modified online measurement was used to measure the pressure-volume-temperature

(PVT) properties of polymers under certain processing conditions. The measurement was based on an injection molding machine, and it was used to obtain the PVT data of polymers directly with a special testing mold under normal processing conditions. The PVT properties of a semicrystalline polymer, polypropylene, were measured through both an online testing mold and a conventional piston-die dilatometer. click here The PVT properties were correlated by a modified two-domain Tait equation of state. The differences between the two groups of PVT data measured were investigated, and relative differences, especially in the rubbery state because of SIS3 ic50 different cooling or heating measuring modes and sample forms, were observed. Numerical simulations of injection-molding processes were carried out by Moldflow software with both of the types of PVT data. The resulting online PVT data exhibited improvement in the accurate prediction

of shrinkage and warpage. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 200-208, 2010″
“Background: Studies in animals and in vitro suggest that conjugated linoleic acids (CLAs), a group of fatty acids found mainly in dairy products and in the meat of ruminants, have protective effects against mammary carcinogenesis. However, findings from epidemiologic studies on CLA intake in relation to breast cancer risk are sparse and inconsistent.

Objective: The objective was to examine prospectively the association between CLA intake and the incidence of invasive breast cancer in the Swedish Mammography Cohort.

Design: In 1987-1990, 61,433 cancer-free women completed a food-frequency questionnaire from which we estimated each woman’s CLA intake.

(C) 2011 American Institute of Physics [doi: 10 1063/1 3569851]“

(C) 2011 American Institute of Physics. [doi: 10.1063/1.3569851]“
“Objectives. The aim of this study was to evaluate the 2-year success rate of management of patients with bisphosphonate-related osteonecrosis of the jaws (BRONJ).

Study design. A prospective study was performed. Positive outcome variables were the resolution of symptoms and the status of the mucosa.

Results. A total of 37 patients are described. The precipitating

event was a dental extraction in 22 cases (59.5%). Thirteen patients (35.1%) underwent selleck chemical surgery, and 24 (64.9%) underwent antimicrobial therapy alone. After 2 years, 20 patients (54.1%) presented with soft tissue closure over previously exposed bone, and there were no statistical differences in gender, age, bisphosphonate treatment, or treatment modalities. Spontaneous lesions seemed to have a worse prognosis (P = .001).

Conclusions. Initial antimicrobial treatment, and later surgery for unresponsive patients, might be a feasible treatment modality for BRONJ. Because these results are not conclusive, it would be very interesting to know if this statement would be the same with a greater number of patients. (Oral Surg Oral Med

Oral Pathol Oral Radiol Endod 2010; 110: 46-53)”
“BACKGROUND: Aurora Kinase inhibitor Although heart transplantation has been used as the primary therapy for congenital heart lesions in infants other than hypoplastic left heart syndrome (HLHS), the outcomes in this group of patients have not been determined.

METHODS: We used the Pediatric Heart Transplant Study database (1993 to 2006) to compare outcomes of 388 infants aged < 6 months listed for HLHS, 161 with other congenital heart diseases (non-HLHS), and 145 with cardiomyopathy in early (1993 to 1999) and recent (2000 to 2006) eras.

RESULTS: The cardiomyopathy group was significantly (p < 0.001) different from the HLHS and non-HLHS groups at listing: more girls, older age, and a greater need for LY2835219 chemical structure high-dose inotropes, mechanical ventilation, and/or mechanical circulatory support. Survival after listing was similar among the groups in the early era. Although outcomes after listing in HLHS and cardiomyopathy patients

improved in the recent era, outcomes in non-HLHS patients did not. Survival at 1 and 5 years after listing was significantly worse (p < 0.001) for non-HLHS patients (51%, 48%) vs HLHS (71%, 61%), with age- and sex-adjusted hazard ratio (HR) of 1.79 (95% confidence interval, 1.15-2.77, p = 0.009) and CM (80%, 74%; HR, 2.72; 95% confidence interval, 1.59-4.67, p < 0.001) in the recent era. Post-transplant survival in both eras was not significantly different among the groups.

CONCLUSION: Use of heart transplantation as primary therapy for non-HLHS infants has not improved over time and currently is associated with significantly poorer results vs HLHS and cardiomyopathy due to a higher risk for death before transplant.

Rotavirus RNA and antigen were not detected in the CSF, suggestin

Rotavirus RNA and antigen were not detected in the CSF, suggesting that the reversible TH-302 Others inhibitor splenial change was caused by indirect effects on the central nervous system subsequent to viral infection. Her normal serum sodium level indicates that this change can occur without hyponatremia.”
“Principal component analysis (PCA) was applied to a data set containing the levels of indicator polychlorinated biphenyls (PCBs) in human milk of mothers living in the Wielkopolska region, Poland, in order to investigate the

information captured in the PCB patterns and to elucidate the relationship between PCB concentrations in milk and donor characteristics. According to the obtained PCA results milk fat content was the most influential factor affecting the PCB levels in milk of the Wielkopolska cohort. The lifestyle data collected from the questionnaire completed by the donors appeared to have no influence on PCB concentrations in breast milk. The score plots revealed the PCB contents

of milk were quite low and uniform with a few outliers, without discrimination observed either between the primipareous and secundipareous females or between donors from the urban and rural areas. Comparison of the PCB levels and profiles of human milk from the Wielkopolska region and from various European and Asian locations made by PCA reflected a generally low background exposure and indicated the possible reasons for the outlying of some samples. In order to enhance the chances of observing the relationship between donor habits and PCB levels in breast milk it was suggested that the questionnaire be redesigned to gather information www.selleckchem.com/products/3-deazaneplanocin-a-dznep.html about vegetable product consumption and indoor air exposure.

(C) 2009 Elsevier Ltd. All rights reserved.”
“Bacillus cereus endocarditis is rare. It has been implicated in immunocompromised individuals, this website especially in intravenous drug users as well as in those with a cardiac prosthesis. The patient was a 31-year-old ex-intravenous drug addict with a past history of staphylococcal pulmonary valve endocarditis, who presented with symptoms of decompensated cardiac failure. Echocardiography showed severe aortic regurgitation with an oscillating vegetation seen on the right coronary cusp of the aortic valve. The blood cultures grew Bacillus cereus. We report this as a rare case of Bacillus cereus endocarditis affecting a native aortic valve.”
“PCBs were determined in wild mussel samples collected in several points from Galician Rias (Rias de Ferrol, A Coruna, Muros, Vigo and Arousa), Spain, during the period 1998-2008. The concentration levels of Sigma PCBs ranged from 0.62 to 107.5 ng g(-1), w.w. The isomer concentrations in the Mytilus galloprovincialis were in the order hexachlorobiphenyls>pentachlorobiphenyls>tetrachlorbiphenyls>trichlorobiphenyls. CBs 153, 138 and 101 congeners were the most abundant in these samples.

Consideration of the above

Consideration of the above selleck factors at the stage of both geometry optimization and calculation of magnetic shielding constants

was found to appreciably improve the accuracy of calculation of (31)P NMR chemical shifts in the series of phosphines and phosphine chalcogenides.”
“Background: Recent studies have demonstrated the consistently high diagnostic and prognostic value of dobutamine stress cardiovascular magnetic resonance (DCMR). The value of DCMR for clinical decision making still needs to be defined. Hence, the purpose of this study was to assess the utility of DCMR regarding clinical management of patients with suspected and known coronary artery disease (CAD) in a routine setting.

Methods and Results: We prospectively performed a standard DCMR examination in 1532 consecutive patients with suspected and known CAD. Patients were stratified according to the results of DCMR: DCMR-positive patients were recommended to undergo invasive coronary angiography and DCMR-negative patients received optimal medical treatment. PD173074 molecular weight Of 609 (40%)

DCMR-positive patients coronary angiography was performed in 478 (78%) within 90 days. In 409 of these patients significant coronary stenoses >= 50% were present (positive predictive value 86%). Of 923 (60%) DCMR-negative patients 833 (90%) received optimal medical therapy. During a mean follow-up period of 2.1 +/- 0.8 years (median: 2.1 years, interquartile range 1.5 to 2.7 years) 8 DCMR-negative patients (0.96%) sustained a cardiac event.

In 131 DCMR-positive patients who did not undergo invasive angiography, 20 patients (15%) suffered cardiac events. In 90 DCMR-negative patients (10%) invasive angiography was performed within 2 years (range 0.01 to 2.0 years) with 56 patients having coronary stenoses >= 50%.

Conclusion: In a routine setting DCMR proved a useful arbiter for clinical decision making and exhibited high utility for stratification and clinical management of patients with suspected and known CAD.”
“Background-Meta-analysis of registries (comparative effectiveness research) shows that primary angioplasty and fibrinolysis have equivalent real-world survival. Yet, randomized, controlled trials consistently find primary angioplasty superior. Can unequal allocation of higher-risk patients in registries Kinase Inhibitor Library supplier have masked primary angioplasty benefit?

Methods and Results-First, we constructed a model to demonstrate the potential effect of allocation bias. We then analyzed published registries (55 022 patients) for allocation of higher-risk patients (Killip class >= 1) to determine whether the choice of reperfusion therapy was affected by the risk level of the patient. Meta-regression was used to examine the relationship between differences in allocation of high-risk patient to primary angioplasty or fibrinolysis and mortality. Initial modeling suggested that registry outcomes are sensitive to allocation bias of high-risk patients.