(C) 2009 Elsevier B V All rights reserved “
“A microscopic

(C) 2009 Elsevier B.V. All rights reserved.”
“A microscopic AP26113 mouse theory is presented for electron cotunneling through quantum dots in the Coulomb blockade regime. Beyond the semiclassic framework of phenomenological models,

a fully quantum mechanical solution for cotunneling of electrons through a one-dimensional quantum dot is obtained by using a quantum transmitting boundary method without any. fitting parameters. Elastic and inelastic cotunneling conductance is calculated as a function of the energy of the incident electron. It is revealed that the cotunneling current contains a significant term proportional to V(2) (V being the bias voltage) in additional to the well-known V(3) term. The result also indicates that the cotunneling conductance exhibits little dependence on the spin configuration of the incident and confined electrons. (C) 2010 American Institute of Physics. [doi:10.1063/1.3475148]“
“The state of dispersion, the viscoelastic properties and the mechanical properties (such as Young’s modulus, ductibility, penetration, and Fraas breaking point) of polymer-modified bitumen are investigated Bitumen was modified

with low-density polyethylene from processed bags (PE(bags)) and styrene-butadiene random block copolymer (SBR) The blends Tyrosine Kinase Inhibitor Library solubility dmso were characterized by optical microscopy, dynamic mechanical thermal analysis (DMTA), and other conventional methods Photomicrographs indicated that different morphologies were obtained, PE(bags) gave dispersions with almost spherical polymer particles, Bak protein whereas in the case of SBR, fibrillar domains were observed DMTA measurements indicated significant

changes of the storage and loss moduli of modified bitumen, depending on the polymer content in the bitumen matrix, these values were three to four times higher compared with neat bitumen. Blends with SBR showed a significantly Increased resistance to cracking at low temperatures due to decrease of the glass transition temperature from -14 to -34 degrees C Contrary, PE(bags) gave better results at higher temperatures where as a result of the increased resistance to permanent deformation the softening point of modified bitumen was shifted from 52 to 73 degrees C It was also investigated the influence of mixtures of PE(bags)/SBR on the properties of bitumen as function of the composition and ratio between PE(bags) and SBR. It was found that the best Improvement in deformation resistance, permanent deformation, and cracking of bitumen was achieved with the addition of PE(bags)/SBR mixture as the rubber increased the bitumen properties at low temperatures and the polyolefin at high temperatures (C) 2010 Wiley Periodicals, Inc J Appl Polym Sci 118 1320-1330, 2010″
“The efficiencies of fumaric, maleic. and sulfuric acid in wheat straw pretreatment were compared. As a measure for pretreatment efficiency, enzymatic digestibility of the lignocellulose was determined.

SMS was delivered with a Medtronic R30 repetitive magnetic stimul

SMS was delivered with a Medtronic R30 repetitive magnetic stimulator (Medtronic Corporation, Skovlunde, Denmark) connected to a C-B60 figure of eight coil capable of delivering a maximum output of 2 Tesla per pulse. The coil measured 90 mm in each wing and was

centered over the surface landmark corresponding to the cauda equina region. The coil was placed flat over the back with the handle pointing cranially. Each patient on active treatment received 200 trains of five pulses delivered at 10 Hz, at an interval of 5 seconds between each train. “”Sham”" SMS was delivered with the coil angled vertically and one of the wing edges in contact with the stimulation point.

Results. All patients tolerated the procedure well and no side effects of SMS were reported.

In the treatment arm, SMS had resulted in significant pain reduction immediately and at Day

4 after treatment (P < 0.05). selleck compound In the placebo arm, however, no significant pain reduction was seen immediately and at Day 4 after SMS.

SMS in the treatment arm had resulted in mean pain reduction of 62.3% postprocedure and 17.4% at Day 4. The placebo arm only achieved pain reduction of 6.1% postprocedure and 4.5% at Day 4.

Discussion. This is the first study to show that a single session of SMS resulted in significant improvement of pain associated with lumbar spondylosis in a randomized, double-blind, placebo-controlled setting. The novel findings support the potential of this technique for future studies pertaining to neuropathic pain.”
“Background: In network meta-analyses, several treatments can be compared by connecting evidence from find more clinical trials that have investigated two or more treatments. The resulting trial network allows estimating the relative effects of all pairs of treatments taking indirect evidence into

account. For Bucladesine a valid analysis of the network, consistent information from different pathways is assumed. Consistency can be checked by contrasting effect estimates from direct comparisons with the evidence of the remaining network. Unfortunately, one deviating direct comparison may have side effects on the network estimates of others, thus producing hot spots of inconsistency.

Methods: We provide a tool, the net heat plot, to render transparent which direct comparisons drive each network estimate and to display hot spots of inconsistency: this permits singling out which of the suspicious direct comparisons are sufficient to explain the presence of inconsistency. We base our methods on fixed-effects models. For disclosure of potential drivers, the plot comprises the contribution of each direct estimate to network estimates resulting from regression diagnostics. In combination, we show heat colors corresponding to the change in agreement between direct and indirect estimate when relaxing the assumption of consistency for one direct comparison.

(C) 2010 American Institute of Physics [doi:10 1063/1 3490179]“<

(C) 2010 American Institute of Physics. [doi:10.1063/1.3490179]“
“The placement of transobturator sub-urethral synthetic tapes, although with a high success rate of achieving continence, carries the risk of tape erosion to adjacent structures. While vaginal erosion occurs more frequently, urethral erosion has also been reported, usually in the immediate or early postoperative period. We present two different cases of urethral erosion with the Obtape(A (R)) sling, the first one diagnosed 1 year after surgery and the second one, a very late complication, occurring 4 years after the placement of the sling. Although transvaginal urethrotomy with tape resection has been

the most popular approach described in the literature, we describe a minimally invasive trans-urethral approach for the management of this complication under local anaesthesia. Ricolinostat ic50 We also present some “”tricks of the trade”" on retrieving the tape trans-urethrally while maximizing the length of tape removed.”
“The temperature dependent anisotropy of a highly textured epitaxial Pr-Co film with a single orientation of the crystallographic

c-axis along MgO [001] is investigated by measuring angle dependent hysteresis loops at various temperatures. The measured magnetization curves are compared with calculated magnetization curves, which allows for a full analysis of the temperature dependent anisotropy constants of first and second order, K-1 and K-2 and the determination of the saturation polarization. AG-120 chemical structure The analysis reveals that the Pr15.4Co84.6 film undergoes a spin reorientation transition from an easy axis anisotropy to an easy cone anisotropy at 108 K. The room temperature values of K-1 and K-2 measured for this Pr15.4Co84.6 film are 5.0 MJ m(-3) and GSK1838705A 0.5 MJ m(-3), respectively. The difference to the bulk PrCo5 single crystal values is ascribed to the high Co content of the Pr15.4Co84.6 film. (C) 2010 American Institute of Physics. [doi:10.1063/1.3490204]“
“Aims: Radiotherapy

is an important treatment modality for meningioma. We aimed to review the clinical outcomes for meningioma patients treated with radiotherapy in the Addenbrooke’s Hospital Oncology Department.

Materials and methods: A retrospective chart review was carried out on patients with meningiorna referred and treated in the department between 1 November 1996 and 31 October 2006. Patient details and outcomes were recorded and the results were analysed to assess survival outcomes. Survival data were confirmed by the Eastern Cancer Registration and Information Centre.

Results: In total, 174 patients were referred to the department for an oncology opinion. Of these, 128 proceeded to radiotherapy. The median follow-up was 5.3 years (range 2.1-11.9 years).

7 nm) was smaller than the hydrogel mesh size (similar to 19 nm)

7 nm) was smaller than the hydrogel mesh size (similar to 19 nm). The release of bovine serum albumin from both hydrogel types was substantially higher than expected, especially Tariquidar datasheet in the presence of dextranase, and this was attributed to the high swellability of the hydrogels. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 115: 740-747, 2010″
“Introduction and objectives. Cardiomyopathy and channelopathy are major

causes of sudden death (SD). The little information available on the context in which SD occurs has come from only a few referral centers. The objective was to investigate the circumstances surrounding SD in families with inherited heart disease.

Methods. The study included 152 SD patients (mean age 43 19 years) from 103 families. The reasons for inclusion were resuscitated SD in 7%, recent SD in 8%, and a diagnosis of cardiomyopathy or channelopathy in a living relative in 72%. Also, 13% were athletes. Family trees were constructed and each death’s circumstances were recorded. Autopsy and medical records were reviewed.

Results.

www.selleckchem.com/products/jnk-in-8.html Overall, 18% of SDs occurred during physical exercise, 32% during normal daily activities, and 37% during rest or sleep. There was a significant association between male sex and SD: 111 males (73%) vs. 41 females (27%; P=.03). Exercise-related SD was associated with young age (P=.01). The percentage of SDs associated with exercise, stress or normal daily activities was significantly greater with cardiomyopathy than channelopathy (61% vs. 41%; P=.057). All athletes were SN-38 mw male and the majority died during exercise (50% vs. 11% of non-athletes; P=.0002). Patients with Brugada syndrome had the highest percentage of SDs during rest or sleep (i.e. 47%). No clear trigger could be identified in 33%.

Conclusions. SD was common in inherited heart disease, which accounted for a significant number of cases. Males clearly predominated over females (ratio 3:1) among SD cases (irrespective of pathological type). Most SDs occurred

during exercise or normal daily activities in cardiomyopathies and during rest or sleep in channelopathies. The percentage of exercise-related SDs (i.e. 18%) was higher than expected.”
“Background: MRI (magnetic resonance imaging) is widely used to diagnose meniscal pathology and ACL (anterior cruciate ligament) tears. Because of the enhanced signal-to-noise ratio and improved image quality at higher field strength, knee MRI equipment is shifting from 1.5 to 3.0 T. To date, objective evidence of improved diagnostic ability at 3.0 T is lacking. The purpose of this prospective study was to assess the accuracy of 1.5 and 3.0-T MRI of the knee, in the same individuals, for diagnosing meniscal pathology and ACL tears, utilizing arthroscopy as the reference standard.

Methods: Two hundred patients underwent MRI of the knee at 1.5 and 3.0 T. All MRI examinations consisted of multiplanar turbo spin-echo sequences.

39 in favour of 72 weeks therapy (95% CI 0 25-0 61) There was no

39 in favour of 72 weeks therapy (95% CI 0.25-0.61). There was no heterogeneity. No publication bias was noted as assessed by Egger’s test. Extending the treatment duration from 48 to 72 weeks in genotype 1 infected patients with late virological response improves SVR. Thus, therapy extension in genotype 1 late viral responders (LVR) may be a consideration to improve treatment response; however, the proportion of patients with LVR that might benefit from 72-week therapy appears to be small.”
“We have

performed find protocol first-principles calculations using the full-potential linearized augmented plane-wave method to investigate the magnetic properties of Al1-xMnxN, Ga1-xMnxN, and In1-xMnxN semiconductors, for x=0.25, 0.50, and 0.75 in their ordered zinc-blend ferromagnetic phase. For the structural properties, we found strong positive deviation from Vegard’s law regarding the variation in the lattice parameter which is in direct contrast with conventional III-V alloys. In addition, we found that In1-xMnxN exhibits a half-metallic characteristic for all Mn composition. A total magnetic moment of 4 mu(B) was found for all In1-xMnxN compositions, LOXO-101 nmr and for half-metallic phases of Al1-xMnxN and Ga1-xMnxN, respectively.

The Mn atom is the main source of the total magnetic moment in these alloys, while the contributions from Al, Ga, In, and N are negligible. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3524049]“
“Objective: This study was designed as part of a series of studies mandated by the Cameroon Ministry of Public Health (National Epilepsy Control Program) to obtain new data for improvement of the epilepsy

teaching program in schools training health personnel in the South West Region of Cameroon.

Method: A 12-item semistructured questionnaire was self-administered to 340 student nurses and laboratory assistants in five training schools for health personnel Selleck PX-478 in the South West Region of Cameroon.

Results: All of them had heard about epilepsy, 86.5% knew someone with epilepsy, 88.5% had witnessed a seizure, but only 48.8% had read about epilepsy. About 33% and 52% would, respectively, object to their children associating with and marrying people with epilepsy (PWE). About 15.3% believed that epilepsy is a form of insanity, 10% thought epilepsy is contagious, 67.4% (P < 0.001) would recommend medical treatment for epilepsy, 22% would offer prayers only, and 6% would recommend traditional medicine. Independent predictors of attitudes were: acquaintance with someone with epilepsy, knowledge of the cause of epilepsy, the belief that epilepsy is contagious or is a form of insanity, being male, and being in the first year of studies.

This retrospective study identified undifferentiated-type adenoca

This retrospective study identified undifferentiated-type adenocarcinoma as the only risk factor for recurrence in stage Ib gastric cancer patients. Although randomized controlled studies are necessary, https://www.selleckchem.com/products/pci-32765.html stage Ib gastric cancer patients with this identified recurrence risk factor would be candidates for adjuvant chemotherapy.”
“Selecting a proper reconstruction method is the

key to success in skin cancer management, especially for lesions involving the face. Using a skin graft is usually straightforward when covering a skin defect; however, major concerns in skin grafting include a poor color match in the recipient-site and donor-site morbidity. To overcome these limitations, the authors have developed a dermis graft, which utilizes a de-epithelialized split-thickness skin graft method. The purpose of this retrospective study was to report reliability of dermis grafts after removal of basal cell carcinomas (BCCs) on the face by presenting our clinical experience with them. This study included 38 patients who were treated for facial defects created by

resection of BCCs. The locations of the defects DMH1 nmr were as follows: nose (n = 17), orbital area (n = 14), cheek (n = 4), temple area (n = 2), and forehead (n = 1). The defects ranged in size from 3.3 to 6.5 cm(2). Functional and cosmetic outcomes, postoperative complications, and patient satisfaction were assessed. The patients were followed up for 12 to 36 months. The entire dermis graft re-epithelialized after grafting within 17 to 27 days. Most

of the patients had satisfactory results in both functional and cosmetic matters with high-quality skin characteristics. There were no significant complications and no recurrences were observed during the follow-up period. Patient satisfaction with the dermis graft was also excellent. The dermis graft may be used reliably for covering defects after removal of BCCs on the face.”
“T-DNA transfer and integration frequencies during Agrobacterium-mediated root explant MLN4924 ic50 cocultivation and floral dip transformations of Arabidopsis thaliana were analyzed with and without selection for transformation-competent cells. Based on the presence or absence of CRE recombinase activity without or with the CRE T-DNA being integrated, transient expression versus stable transformation was differentiated. During root explant cocultivation, continuous light enhanced the number of plant cells competent for interaction with Agrobacterium and thus the number of transient gene expression events. However, in transformation competent plant cells, continuous light did not further enhance cotransfer or cointegration frequencies. Upon selection for root transformants expressing a first T-DNA, 43-69 % of these transformants showed cotransfer of another non-selected T-DNA in two different light regimes.

[DOI: 10 1063/1 3125254]“
“Case Description-A 22-year-old Am

[DOI: 10.1063/1.3125254]“
“Case Description-A 22-year-old American Paint Horse gelding from the Gulf Coast region of Texas was evaluated for regrowth of a perirectal squamous cell carcinoma that had been surgically removed 11 months previously.

Clinical Findings-A necrotic and ulcerated mass was present below the anus. The horse had paraphimosis and was having difficulty with urination. Histologic examination of the mass revealed that it was squamous cell carcinoma, and the horse was euthanized because of the unlikelihood that the mass could be adequately

resected and its close proximity to the urethra.

Outcome-At necropsy, in addition to the squamous cell carcinoma, hundreds of round, white to pale yellow nodules were disseminated throughout Crenigacestat chemical structure the liver, resulting in a so-called starry-sky appearance. Similar granulomas were seen in the right caudal lung lobe and small intestinal serosa. A single granuloma in the liver, which differed from the others by its larger size, contained a pair of adult schistosomes. Several hepatic granuloma specimens were used for PCR amplification and sequencing. Use of primers specific for a portion of the Heterobilharzia americana small subunit rRNA gene resulted

in amplification of a 487-base pair product that had 100% sequence identity with H americana.

Clinical Relevance-Severe cases of disseminated granulomas in the liver of horses may result in a liver with learn more a grossly abnormal starry-sky pattern. To our knowledge, this is the first report documenting the association of granulomas

with H americana infection along with adult schistosomes in the liver of a horse. (J Am Vet Med Assoc 2011;239:1117-1122)”
“SETTING: A suburban teaching hospital in a tuberculosis (TB) prevalent area.

OBJECTIVES: To evaluate the proportion of pulmonary TB among patients hospitalised with suspected community-acquired pneumonia (CAP), and to develop a diagnostic index for identifying TB among these patients.

DESIGN: TB cases confirmed using 1) sputum culture, or 2) both sputum acid-fast bacilli smear and polymerase LY3039478 in vivo chain reaction for Mycobacterium tuberculosis, were compared with non-tuberculous CAP by demographic, clinical, laboratory and radiographic information. Using multiple logistic regression analysis, risk factors for TB were identified. A diagnostic index was developed by summing up their simplified regression coefficients. Its performance was checked using c-statistic.

RESULTS: TB was the second leading cause of CAP (37/528, 7.0%). Risk factors were initial symptoms >7 days, serum albumin <3.5 g/dl, cavitary/nodular infiltrates and upper lobe involvement (1 point for each). The c-statistic of the index was 0.856 (95% CI 0.789 0.923), and for bootstrapping samples of 1000 repetitions it was 0.856 (95%CI 0.791-0.921). For scores sensitivity and specificity were respectively 81.1% and 75.8%.

CONCLUSION: TB is one of the leading causes of CAP in TB-prevalent areas.

Based on mapping characterization, a schematic representation of

Based on mapping characterization, a schematic representation of the CA/polysilsesquioxane composite morphology was proposed. The organosilane type and architecture influenced the thermal behavior

and the morphology of these materials. The results suggest that the silane coupling agents could be used to produce CA films with a range of properties. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 2027-2035, 2012″
“Emphysematous pyelonephritis (EPN) is an acute necrotizing infection with gas presence in the kidney, perinephric space, and/or urinary collecting system that carries a bad prognosis. Some OSI-906 cost clinical conditions predispose to this entity, such as diabetes mellitus, urinary tract obstruction, and immune-incompetence. Immediate resuscitation, broad-spectrum antibiotics, percutaneous and surgical drainage, and emergent and delayed nephrectomy are therapeutic options

that should be applied in a timely fashion. We report our experience of four patients with EPN. Two of the patients were kidney transplant recipients, one patient had bilateral urolithiasis, and one patient was an elderly patient with debilitated general condition and an abdominal mass that could not be defined. Late transplant nephrectomy was performed in one patient, and three patients U0126 chemical structure were treated conservatively. Three patients died, including the patient who had transplant nephrectomy. One patient who presented with lithiasis showed a remarkable recovery with conservative management. The bacteria involved were E. Coli and a resistant Klebsiella. We conclude that EPN is a life-threatening condition that carries a bad prognosis. Early diagnosis is essential for a positive outcome. Therapeutic measures should be applied immediately after diagnosis. An aggressive approach including nephrectomy may be emergently required.”
“Vascular endothelial growth factor (VEGF), angiopoietin-2, and endostatin have been reported to be related with angiogenesis of MK-8776 hepatocellular carcinoma (HCC). The potential feasibility of serial serum VEGF-A, angiopoietin-2, and

endostatin measurements in cirrhotic patients with HCC treated by transcatheter arterial chemoembolization (TACE) was investigated. VEGF-A, angiopoietin-2, and endostatin serum level were determined by enzyme-linked immunosorbent assay 1 day before and 7 days after TACE in 40 patients. Then they were followed up for 3 months. The results showed that TACE could cause significant increase of VEGF-A (p < 0.01) and angiopoietin-2 (p = 0.01); whereas there was no significant change of endostatin (p > 0.1). Twenty-five patients with rapid growth of HCC within 3 months after TACE had higher proportion of American Joint Committee on Cancer HCC staging >II and higher increase of VEGF-A after TACE than 15 patients without rapid growth (all p < 0.05). Stepwise logistic regression analysis revealed that VEGF-A >16.

There were significant decrease in serum sodium concentration and

There were significant decrease in serum sodium concentration and postoperative serum osmolarity in glycine group (B) with

negative correlations between the absorptive fluid volume and both serum sodium concentration and serum osmolarity in glycine group (B).

Conclusions:

The use of bipolar resectoscope utilizing 0.9% saline as a distention media is not associated with hyponatremia or hyposmolarity unlike monopolar resectoscope utilizing 1.5% glycine distending media in cases with submucous myoma of considerable size.”
“The orbitofrontal cortex (OFC) is crucial for the inhibition of extraneous stimuli, evaluation of aversive information and emotional regulationall behaviors impaired RG7204 in cocaine addiction. Previous studies suggest that cocaine-addicted subjects have decreased basal activity in the OFC. In this study, we examined regional cerebral blood flow (rCBF) during a saline infusion in two independent populations of abstinent cocaine- (and mostly nicotine-) addicted (n = 33 and 26) and healthy control (n = 35 and 20) men and women. Isolated rCBF decreases (P < 0.001) were observed in the left caudolateral

OFC, as well as left superior temporal cortex, in cocaine-addicted subjects relative to controls in both cohorts and bilaterally in the combined cohort. An anatomically see more defined region of the caudolateral OFC showed similar findings and were evident in both male and female addicted subjects. The reliability of these findings across two cohorts reveals a functional disruption in the lateral OFC, a brain region implicated in the evaluation of behavior-terminating stimuli. This may contribute to an addicted individual’s persistent drug use despite Liproxstatin-1 in vitro negative consequences.”
e university hospital and comprising of 155 patients scheduled for hysteroscopic myomectomy. They were subjected to bipolar resectoscopic myomectomy

utilizing 0.9% saline in group A, and monopolar resectoscopic myomectomy utilizing 1.5% glycine in group B. Perioperative measurements of hemodynamic, hematological, and biochemical changes in all cases were reported. Likewise, intrauterine pressure throughout the different procedures was recorded. Main outcome measures: intraoperative difference with regards to fluid volume and subsequent systemic changes specially osmolarity.

Results:

A significant increase of central venous pressure, end diastolic volume, end diastolic index, stroke volume, stroke index, cardiac output, cardiac index, postoperative prothrombin time and postoperative partial thromboplastin time in both groups with positive correlations between the absorbed fluid volume and these measurements in both groups.

However, the kill rates are extremely slow so that therapy takes

However, the kill rates are extremely slow so that therapy takes many months to years to achieve and even then more than 40% of patients are not completely cured. Recent studies have demonstrated that assays that detect

extracellular MAC have a limited predictive value. Antibiotics kill at a much slower and more disappointing rate against bacilli within macrophages. Use of pharmacodynamic/pharmacokinetic models has resulted in design of new doses and dosing schedules for disseminated MAC, as well as new susceptibility breakpoints for ethambutol and moxifloxacin.”
“Polythiophene (Pth) bilayer films each consists of a nanotube layer and a compact layer had been prepared by electrochemical polymerization and using anodic aluminum oxide (AAO) membranes as template. The films were treated by mechanical polishing and freeze drying to improve the degree of orientation of nanotubes and their surface S63845 Apoptosis inhibitor smoothness. A treated Pth bilayer film can adhere strongly on glass with its nanotube surface by applying a dragging preload. The applied dragging preload caused the original vertically aligned Pth nanotube array to tilt opposite to the direction of preload, which induced a superstrong shear adhesion force of up to 144 +/- 30 N cm-2 for the film

with a tube length of 26 mu m as the film was dragged along the direction of preload. However, the shear adhesion force opposite to the direction Selleckchem CAL 101 of dragging preload was relatively low (44 +/- 17 N cm-2). The direction-dependent force

management of Pth bilayer films is quite similar to that gecko does, indicating the potential for developing advanced adhesive systems. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“In this paper, we proposed a non-destructive evaluation method combined digital image correlation with acoustic emission techniques. The method was used to in situ monitor interface failure and internal damage of brittle coating/ductile substrate systems with different size scales. The results show that there is a good relationship between digital image correlation and acoustic emission signals, which can be applied to judge cracking formation and coating delamination VX-680 mouse and to determine fracture toughness of a thermal barrier coating system subjected to bending. (C) 2011 American Institute of Physics. [doi:10.1063/1.3651378]“
“Background: Effective bile duct drainage is crucial to the health-related quality of life of patients with jaundice caused by obstruction of the bile duct by inoperable malignant tumours.

Methods: All patients who were treated at Uppsala University Hospital, Sweden with percutaneous stenting between 2000 and 2005 were identified retrospectively. Data on the location of the obstruction and type of stent used, date and cause of death and date of stent failure were abstracted from the patients’ notes. Stent patency was defined as the duration from the insertion of the stent to the date of failure.