bluuebunny/crossref_metadata_2025_split huggingface dataset:
Immediate Stenting of Iliofemoral Occlusive Lesions: A Surgeon's Early Experiences
Authors: Cheng Stephen W.K. , Ting Albert C.W. , Lau Hung , Wong John 
Published: March 2015

Purpose: To report the early and midterm results of balloon angioplasty and immediate stenting of atherosclerotic iliofemoral lesions in an operating room setting. Methods: Sixty-one patients (41 men, mean age 70 ± 8 years, range 49 to 86) underwent balloon dilation and systematic stenting for 80 stenotic and occlusive lesions in the iliac (n = 47) and superficial femoral (n = 33) arteries in 72 limbs. One hundred two stents (63 VascuCoil, 33 Wallstent, and 6 miscellaneous) were placed. Patients were followed with serial duplex scans at 3-month intervals. Results: Initial technical success by intention-to-treat was 96.2% (77/80) (iliac: 100%, femoral: 90.9% [30/33]). There were 9 (11.3%) procedure-related complications and no deaths. Initial success by anatomic, hemodynamic, and clinical limb criteria were 100%, 95%, and 94.4%, respectively. Thirty procedures were performed for limb salvage with a success rate of 86.7%. Six patients (7 limbs) died during follow-up of unrelated causes. Fifty-nine (81.9%) limbs were available for duplex follow-up over a mean 17.7 months (range 3 to 37). Cumulative patency rates were 87.3% at 2 years for iliac stents and 66.6% at 18 months for femoral stents with an overall 2-year patency rate of 76.3%. The only independent risk factors affecting late patency were the site of angioplasty, stent diameter, lesion grade, and the preoperative ankle-brachial index. Stents placed with a diameter ≤ 5 mm and > 5 mm had 1-year patency rates of 51.0% and 97.6%, respectively (p = 0.004) Conclusions: Iliac and femoral angioplasty and immediate stenting have acceptable midterm patency rates. The patency of femoral stenting is inferior and is adversely affected by stents ≤ 5 mm in diameter.
Sequential Retroperitoneal Venous Hemorrhage and Embolism of an Angio-Seal Puncture Closure Device Complicating Iliac Artery Angioplasty
Authors: Tomlinson Mark A. , Beese Richard , Banwell Miles , Loosemore Tom , Buckenham Timothy M. , Dormandy John A. 
Published: March 2015

Purpose: To present a case of iatrogenic puncture closure device embolization complicating surgery for retroperitoneal hemorrhage (RPH) secondary to angioplasty-induced common iliac vein trauma. Methods and Results: A 78-year-old woman with rest pain underwent successful kissing balloon dilation of her aortoiliac bifurcation for a calcified ostial stenosis of the left common iliac artery. Hemostatic puncture closure devices (Angio-Seal) were used to secure both femoral punctures. A right-sided retroperitoneal hematoma developed, and during surgical exploration of the right groin, the Angio-Seal device was removed. The only bleeding site found was the external iliac artery puncture and it was repaired. She again became hypovolemic 18 hours later and was returned to surgery, where bilateral groin explorations and laparotomy by the vascular surgical team found a tear in the left common iliac vein. After repair, the patient was stable for 48 hours when the left leg became critically ischemic. Angiography detected a new high-grade stenosis in the left profunda femoris artery; embolectomy retrieved a footplate from the left puncture closure device. The patient died 11 days later from multiorgan failure. Conclusions: RPH should be considered early as an occult cause of hypovolemic shock developing soon after even technically straightforward iliac angioplasty. Interventionists should be aware that using the Angio-Seal device risks acute limb ischemia if footplate embolization occurs.
Prevention of Spinal Cord Ischemia in an Ovine Model of Abdominal Aortic Aneurysm Treated with a Self-Expanding Stent-Graft
Authors: Beygui Ramin E. , Kinney Edward V. , Pelc Lorie R. , Krievins Dainis , Whittemore Joshua , Fogarty Thomas J. , Zarins Christopher K. 
Published: March 2015

Purpose: To present novel techniques to prevent spinal ischemia during aneurysm creation and chronic bifurcated stent-graft implantation in an ovine model of abdominal aortic aneurysm (AAA). Method: Experimental AAAs were created in 38 sheep. To prevent spinal ischemia, an internal aortic shunt was used during aneurysm creation. In the animals designated to receive bifurcated stent-grafts, a left external iliac-to-internal iliac bypass was performed to revascularize the caudal artery and prevent postdeployment spinal cord ischemia. Specimens were harvested at 1 week, 1, 3, and 6 months, and 1 year. Results: Aneurysms were successfully created without paralysis in 35 animals. Two died due to aspiration pneumonia. Of the 33 animals implanted with endografts, 16 (94%) of 17 with straight devices and 15 (94%) of 16 with bifurcated stent-grafts survived with well-functioning, patent stent-grafts. Paralysis developed in 2 animals after endografting due to technical failures. Conclusions: The use of an internal shunt during aneurysm creation and internal iliac-to-external iliac transposition prior to bifurcated stent-graft deployment prevented spinal ischemia in an ovine AAA model. Chronically deployed stent-grafts were well tolerated.
Intravascular Ultrasound—Guided Vena Cava Filter Placement
Authors: Oppat William Frank , Chiou Andy C. , Matsumura Jon S. 
Published: March 2015

Purpose: To report a technique for the insertion of an inferior vena cava (IVC) filter under intravascular ultrasound (IVUS) guidance. Technique: Using a Seldinger technique, a single groin puncture provides the access for IVUS interrogation of the IVC. After the anatomy is defined with IVUS, the same guidewire is used for percutaneous IVC filter insertion. Intraoperative fluoroscopy, used as a backup, corroborates the proposed insertion location before deployment of the device. Postoperative flat-plate abdominal radiographs are used to confirm satisfactory position. IVC filters have been successfully placed in 9 patients with no complications related to IVUS-guided insertion. Conclusions: Intraluminal IVC interrogation using IVUS is ideally suited for the proper deployment of an IVC filter. The deployment of IVC filters under IVUS has the potential to further simplify an established therapy for deep venous thrombosis and pulmonary embolism.
Deformation of Self-Expanding Stent-Grafts Complicating Endovascular Peripheral Aneurysm Repair
Authors: Sitsen M. Elske , Ho Gwan H. , Blankensteijn Jan D. 
Published: March 2015

Purpose: To demonstrate the deformation of self-expandable stents after endovascular repair of peripheral aneurysms. Methods and Results: The Corvita Endoluminal Graft was used to treat a traumatic false aneurysm of the right subclavian artery and a common iliac artery aneurysm in 2 patients. In the subclavian case, the stent-graft showed a “cigar-shaped” deformation with hemodynamically significant stenoses at the proximal and distal ends at 3 months. In the second case, the same type of deformity was noted only 1 day after implantation. Two months later, the stent-graft occluded, necessitating surgical repair. Conclusions: Both cases demonstrate the possibility of stent deformation of self-expanding stent-grafts implanted at arterial sites not subject to external compression.
Successful Wallstent Implantation for Extensive Iatrogenic Renal Artery Dissection in a Patient with Fibromuscular Dysplasia
Authors: Damaraju Srikanth , Krajcer Zvonimir 
Published: March 2015

Purpose: To describe a case of renal artery stenosis with fibromuscular dysplasia (FMD) and extensive iatrogenic dissection treated with Wallstent implantation. Methods and Results: An 83-year-old woman with a history of coronary artery disease and hypertension presented at another facility with exertional angina and poorly controlled hypertension. Renal arteriography uncovered a critical right renal artery stenosis with severe FMD. However, angioplasty resulted in extensive dissection of the renal artery, for which the patient was referred to our institution. The renal artery was recanalized via the left brachial approach with restoration of flow using a Wallstent and a Palmaz stent. The patient's blood pressure was controllable after this procedure, and follow-up duplex imaging with flow velocities at 6 months showed patent right renal artery stents. Conclusions: Owing to its length and flexibility, the Wallstent endoprosthesis was a useful treatment modality in this case of extensive renal artery dissection.
Endovascular Treatment of a Posttraumatic Femoral Vein—Profunda Femoris Artery Fistula
Authors: Deshpande Arvind , Denton Michael 
Published: March 2015

Purpose: To describe successful endovascular management of a posttraumatic arteriovenous fistula (AVF) when a covered stent is unavailable. Methods and Results: An AVF developed between the profunda femoris and the femoral vein in a 59-year-old man undergoing a total hip revision procedure. No covered stent being available, a Dacron plug was inserted on top of scaffolding created by a conventional stent and embolization coils. Successful control of hemorrhage and resolution of the AVF was documented. Pulmonary embolization was avoided by using this scaffolding technique. Conclusions: Dacron can be used for occlusion of a medium-sized artery in an emergency situation in selected cases.
Outcome of two types of surgical correction of the extra phalanx in triphalangeal thumb: is there a difference?
Authors: Zuidam J. M. , Selles R. W. , de Kraker M. , Hovius S. E. R. 
Published: March 2015

The surgical strategy of treatment of the opposable triphalangeal thumb is correction of the radio-ulnar deviation, reduction of the additional length and joint stabilization. The commonest procedures are: (1) removal of the extra phalanx and stabilization of the remaining joint; and (2) a combined reduction osteotomy with resection of the distal joint followed by arthrodesis. We treated 20 patients (33 hands). In 17 hands the extra phalanx was removed, and in 16 hands we used the combined osteotomy procedure of distal joint removal and arthrodesis. None of the patients in either group had an unstable interphalangeal joint. The mean radial or ulnar deviation in the interphalangeal joint was 5° degrees and 9°, respectively. Mean active flexion in the interphalangeal joint was 35° and 46°, respectively, in the two groups. Results for both procedures are similar, for both objective measures and self-rated function and activities of daily living. Either surgical approach seems reliable. Therapeutic, Level of evidence: Level III
A health equity impact assessment umbrella program (AAPRISS) to tackle social inequalities in health: program description
Authors: Lang Thierry , Bidault Elsa , Villeval Mélanie , Alias François , Gandouet Benjamin , Servat Martine , Theis Ivan , Breton Eric , Haschar-Noé Nadine , Grosclaude Pascale 
Published: March 2015

Background: The failure to simultaneously address two objectives (increasing the average health of the population and reducing health inequalities) may have led to what has been observed in France so far: an overall decrease in mortality and increase in inequality. Objective: The Apprendre et Agir pour Réduire les Inégalités Sociales de Santé (AAPRISS) methodology is to analyze and modify interventions that are already underway in terms of their potential impact on health inequalities. It relies on partnership between researchers and actors in the health field, as well as policy makers. In this paper, we describe the program and discuss its feasibility and acceptability. Methods: This program is not a single intervention, but a process aiming at assessing and reshaping existing health programs, therefore acting as a kind of meta-intervention. The program develops scientific and methodological support stemming from co-construction methods aimed at increasing equity within the programs. Stakeholders from prevention policy-making and the health care system, as well as researchers, collaborate in defining interventions, monitoring their progress, and choosing indicators, methods and evaluation procedures. The target population is mainly the population of the greater Toulouse area. The steps of the process are described: (1) establishment of AAPRISS governance and partnerships; (2) inclusion of projects; and (3) the projects’ process. Discussion: Many partners have rallied around this program, which has been shown to be feasible and acceptable by partners and health actors. A major challenge is understanding each partner’s expectations in terms of temporality of interventions, expected outcomes, assessment methods and indicators. Analyzing the projects has been quite feasible, and some modifications have been implemented in them in order to take inequalities in health into account.
Deficits in Quadriceps Strength and Patient-Oriented Outcomes at Return to Activity After ACL Reconstruction
Authors: Lepley Lindsey K. 
Published: March 2015

Context: Side-to-side quadriceps strength deficits are linked to hazardous lower extremity mechanics and reduced function at a time when individuals are returned to activity after anterior cruciate ligament (ACL) reconstruction. As a result, generalized criteria have emerged in the literature, wherein researchers are recommending that patients be cleared for participation once side-to-side differences in strength are ≤10% of the noninjured limb. Similar recommendations exist for patient-oriented outcomes (ie, self-reported function and hop tests), where deficits of ≤10% are considered ideal at return to activity. It is unclear how many studies actually achieve these clinically recommended results. Evidence Acquisition: Articles that reported quadriceps strength deficits as compared to the contralateral limb were collected from peer-reviewed sources available on Medline and Web of Science databases (1990 through August 2014). Search terms included the following: anterior cruciate ligament OR ACL AND muscle weakness, anterior cruciate ligament OR ACL AND strength; return-to-activity AND strength; anterior cruciate ligament OR ACL AND quadriceps. Study Design: Clinical review. Level of Evidence: Level 4. Results: Average side-to-side strength deficits at 6 months postreconstruction were 23% ± 8% (range, 3%-40%), while the average at 12 months postsurgery was found to be 14% ± 6% (range, 3%-28%). The average deficits in self-reported function at 6 months (mean, 14% ± 5%) and 12 months postsurgery (mean, 13% ± 6%) were also found to be >10%. Performance on hop tests was found to be less than optimal at 6 months postsurgery (mean, 11% ± 7%), but improved at 12 months postsurgery (mean, 1.3% ± 2%). Conclusion: This review provides an up-to-date account of the typical deficits in strength and patient-oriented outcomes that exist when formalized physical therapy concludes after ACL reconstruction. Based on the studies included, it seems pertinent that researchers and clinicians continue to investigate interventions capable of improving the recovery of quadriceps strength as well as patient-oriented outcomes as the majority of studies report levels that are well below clinical recommendations.
Facilitating Early-In-Day Discharge for Multiple Sclerosis Patients Treated With Intravenous Methylprednisolone
Authors: Probasco John C. , Hawley Gina , Burnett Margie , Gibson Lorrie , Carter Kathryn , Harlow Elizabeth , Russell Holly , Huffman Linda , Adams Jane , Ziegler Terry , Sporney Hilary , Levy Michael , Puttgen Hans A. 
Published: March 2015

Background and Purpose: Delays in patient hospital discharge affect care value through costs of prolonged length of stay and barriers to patient flow within the hospital. We sought to facilitate early-in-day discharges (EIDDs) without extending length of stay for inpatients with multiple sclerosis admitted for acute exacerbations and treated with intravenous (IV) methylprednisolone. Methods: We developed a standardized admission order set, a provider checklist, and a patient checklist to better coordinate in-hospital care and discharge planning for patients with multiple sclerosis admitted for IV methylprednisolone treatment. The order set allowed providers to enter an accelerated dosing schedule of methylprednisolone, as appropriate, to ensure administration of the final dose of methylprednisolone in the morning on the anticipated day of discharge. We compared a prospective intervention cohort to a retrospective, preintervention baseline cohort. Results: At baseline (N = 25), 12.0% of patients were EIDD compared to 40.7% of intervention patients (N = 27; P = .03). In all, 85.2% of intervention patients compared to 64.0% of baseline patients were discharged on the same day as last methylprednisolone treatment ( P = .11). No difference was observed in median length of stay and 30-day readmission rate between groups. Conclusions: Use of a standard admission order set as well as provider and patient checklists can facilitate EIDD and hospital bed availability without compromising care quality for a select group of neurology inpatients.
Innsbruckite, Mn33(Si2O5)14(OH)38 – a new mineral from the Tyrol, Austria
Authors: Krüger Hannes , Tropper Peter , Haefeker Udo , Kaindl Reinhard , Tribus Martina , Kahlenberg Volker , Wikete Christoph , Fuchs Martin R. , Olieric Vincent 
Published: March 2015

AbstractA description of the new mineral innsbruckite, Mn33(Si2O5)14(OH)38, a hydrous manganese phyllosilicate found in Tyrol, Austria is given. The crystal structure was determined by singlecrystal synchrotron radiation diffraction experiments at the X06DA beamline at the Swiss Light Source (Paul Scherrer Institute, Villigen, Switzerland). The space group is Cm and lattice parameters are a = 17.2760(19), b = 35.957(5), c = 7.2560(8) Å , β = 91.359(7)º, V = 4506.1(10) Å3, Z = 2. Innsbruckite belongs to the group of modulated 1:1 layer silicates and is chemically and structurally quite closely related to bementite, Mn7(Si2O5)3(OH)8. The chemical analysis revealed a close to ideal composition with only minor amounts of Al, Fe and Mg. Using Liebau’s nomenclature for silicate classification the silicate anion can be described as an unbranched siebener single layer. Innsbruckite shows a complex topology of the silicate sheet, exhibiting 4-, 5-, 6- and 8-membered rings. The silicate sheet is fully characterized using vertex symbols, and its topology is compared to those in other complex sheet silicates. Furthermore, the structural investigation is complemented with Raman spectroscopic studies.
Leguernite, Bi12.67O14(SO4)5, a new Bi oxysulfate from the fumarole deposit of La Fossa crater, Vulcano, Aeolian Islands, Italy
Authors: Garavelli Anna , Pinto Daniela , Mitolo Donatella , Bindi Luca 
Published: March 2015

AbstractLeguernite, ideally Bi12.67O14(SO4)5, is a new mineral found in high-temperature fumarolic assemblages at La Fossa crater, Vulcano, Aeolian Islands, Italy. It occurs as aggregates of needleshaped crystals associated strictly with anglesite, balićžunićite and an unknown Bi sulfate. Leguernite is colourless to white, transparent, non-fluorescent, has a sub-adamantine lustre and a white streak. Electron microprobe data led to the chemical formula (on the basis of 34 anions p.f.u.) (Bi12.40Pb0.15)Σ=12.55S5.08O34. The calculated density is 7.375 g cm–3. A Raman spectrum collected on a single crystal of leguernite confirmed the anhydrous nature of the mineral.Leguernite is monoclinic, space group P2, with a = 11.2486(11), b = 5.6568(6), c = 11.9139(10) Å , β = 99.177(7)º, V = 748.39(12) Å3 and Z = 1. The crystal structure is built up of Bi–O blocks of a fluorite-like structure with Bi12O14 composition separated by a single sulfate ion along [100] and by Bi(SO4)45– groups along [101]. It can also be described as composed of (001) layers with composition [Bi12O14(SO4)6+]n alternating with layers of composition [Bi(SO4)4]n5– along [001]. Leguernite shows significant similarities with the synthetic Bi14O16(SO4)5 compound.The eight strongest reflections in the powder X-ray diffraction data [d in Å (I) (hkl)] are: 3.220 (100) (013), 3.100 (95) (11), 2.83 (30) (020), 2.931 (25) (302), 2.502 (25) (04), 2.035 (20) (322), 1.875 (20) (24) and 5.040 (15) (110).The name is in honour of Franc¸ois “Fanfan” Le Guern (1942–2011), who was a very active volcanologist and specialist in volcanic gases and sublimates. Both the mineral and the mineral name have been approved by the IMA-CNMNC (2013–051).
Structure of Sr-Zr-bearing perrierite-(Ce) from the Burpala Massif, Russia
Authors: Stachowicz Marcin , Bagiński Bogusław , Macdonald Ray , Kartashov Pavel M. , OzięBło Artur , Wożniak Krzysztof 
Published: March 2015

AbstractSr- and Zr-bearing perrierite-(Ce) occurring in aegirinized syenite pegmatites of the Burpala massif, Russia, is compositionally intermediate between perrierite-(Ce) and hezuolinite and occupies a compositional gap in minerals of the chevkinite group. Its crystal structure has been determined using a single-crystal diffractometer fitted with a CCD detector and MoKα X-ray radiation. The mineral is monoclinic; a = 13.815(1), b = 5.668(1), c = 11.842(1) Å , β = 113.843(3)º, V = 848.18(4) Å3, space group C2/m, Z = 2. The crystal structure was refined with the occupancies [(Ce1.2La1.0Nd0.15) (Sr1.0Ca0.5Na0.15)]4(Zr0.5Fe0.3Mn0.2)(Ti1.3Fe0.7)2Ti2(Si2O7)2O8 on the basis of chemical composition although the allocation of cations to particular sites was performed on the basis of the number of refined electrons in each unique site. The dominance of Zr in the B site links the Burpala perrierite-(Ce) to more Sr-Zr-rich members of the chevkinite group, such as hezuolinite and rengeite. As in all of the perrierite members, there is a distortion of the D site octahedra, which is interpreted as due to the packing of the REE ions.
High-pressure Raman study of CH4in melanophlogite (type I clathrate)
Authors: Gatta G. D. , Bersani D. , Lottici P. P. , Tribaudino M. 
Published: March 2015

AbstractThe evolution with pressure of the CH4vibrational modes related to C–H stretching has been followed byin situRaman spectroscopy on a single crystal of cubic melanophlogite from Varano Marchesi (Parma, Italy) containing only CH4in the cages. The sample was compressed hydrostatically in a diamond anvil cell up to 6.5 GPa, using a non-penetratingP-transmitting medium. Two modes at 2900 and 2910 cm–1(ν1 and ν2) were followed in response to the applied pressure, corresponding to C–H stretching of CH4enclathrated in the 51262and 512cages, respectively. A change in slope of the frequencyvs.Plinear trend of the sharper peak at 2900 cm–1, observed between 1 and 1.5 GPa, is interpreted as evidence of the P-induced cubic to tetragonal transition, previously observed by X-ray diffraction atP≥ 1.2 GPa. At pressures below the transition, the shift with P of the CH4modes is comparable to that observed in methane ice hydrate, which becomes hexagonal atP≥ 0.9 GPa however. The ratio of the integrated areas of the two C–H stretching Raman peaks does not change significantly with pressure across the transition. AtP≥ 5.1 GPa, a shoulder appears, close to the n1 peak, along with a slight change in slope of peak shift and peak broadening. The shoulder is maintained in decompression down toP= 4.4 GPa, showing slight hysteresis. At the same pressures however, X-ray diffraction shows no evidence of a phase transition, suggesting that a rearrangement of CH4configuration occurs, without any effect on the tetrahedral framework.