bluuebunny/crossref_metadata_2025_split huggingface dataset:
Directional coronary atherectomy for failed angioplasty due to occlusive coronary dissection
Authors: Warner Mark , Chami Youssef , Johnson Dana , Cowley Michael J. 
Published: March 2007

AbstractWe describe a case in which coronary balloon angioplasty failed to improve sequential lesions and resulted in a long area of dissection between the stenoses. Directional coronary atherectomy of the occlusive dissection produced excellent angiographic improvement to achieve a successful result and avoid the need for urgent coronary bypass surgery. Directional coronary atherectomy represents a potentially useful treatment for PTCA‐induced coronary dissection.
“Hugging balloons” through a single 8‐french guide: Salvage angioplasty with lytic therapy in the infarct vessel of a 40‐year‐old man
Authors: Krucoff Mitchell W. , Smith Jack E. , Jackman John D. , Croll Martha A. , Phillips Harry R. , Stack Richard 
Published: March 2007

AbstractWe report the a case of hugging balloons through an 8‐French guiding catheter to stabilize an ectatic right coronary artery following failed thrombolytic therapy In the setting of acute myocardial infarction. Angiographic follow‐up at 1 wk and 6 mo revealed persistent vessel patency.
Multiple coronary artery aneurysms in an adult associated with extensive thrombus formation resulting in acute myocardial infarction: Successful treatment with intracoronary urokinase, intravenous hepahn, and oral anticoagulation
Authors: Myler Richard K. , Schechtmann Norberto S. , Rosenblum Joseph , Collinsworth Kenneth A. , Bashour Tali T. , Ward Kathleen , Murphy Mary C. , Stertzer Simon H. 
Published: March 2007

AbstractA 37‐yr‐old white female was admitted to hospital with an evolving anterior myocardial infarction. Coronary arteriography revealed multiple aneurysms in the left anterior descending (and right) coronary arteries. In the left anterior descending artery, there was evidence of extensive thrombus formation. The patient was successfully treated with Intracoronary urokinase, intravenous heparin, and oral warfarin. There was partial thrombolysis in 16 hr and complete thrombolysis noted 6 wk later. This case of multiple coronary aneurysms, secondary to presumed Kawasaki disease, is the first documentation of antemortem intra‐aneurysmal coronary thrombosis treated successfully by thrombolytic and anticoagulant therapy.
Intercoronary connection and apical left ventricular hypertrophy: Case report and review of the literature
Authors: Panayiotou Hercules , Perry James M. , Norris John W. 
Published: March 2007

AbstractCardiac Catheterization in a 55‐year‐old man, presenting with chronic chest pain and new T wave Inversion, showed apical left ventricular (LV) hypertrophy and a large intercoronary connection between the posterior descending artery (PDA) and left anterior descending (LAD). Although the LAD was normal, selective angiography of the right coronary artery (RCA) filled the LAD retrogradely. Possible mechanisms and the literature are reviewed.
Effect of drugs on a noninvasive index of arterial compliance in healthy and heart failure patients
Authors: Domingo E. , Gilabert M. R. , Alio J. , Angel J. , Soler‐Soler J. 
Published: March 2007

AbstractTen healthy (aged 28 to 39) and ten heart failure NYHA II (aged 19 to 49) male subjects were prospectlvely studied under no drugs, under furosemide (40 mg/day), under captopril (150 mg/day) and under their association. Arterial compliance (ml/mmHg) was measured in all subjects at rest and supine. Heart failure etiology was dilated cardiomyopathy or ischemic heart disease without significant regurgitation. Arterial compliance was significantly higher In healthy than in heart failure patients in all studied conditions (p < 0.001) (healthy = 2.2 + 0.29 vs. heart failure = 0.79 + 0.14). Neither single drug nor their association induced any change in healthy subjects. Arterial compliance progressively increased in heart failure with furosemide, captopril, and their association (no drug = 0.79 + 0.14; furosemide = 0.87 + 0.15; captopril = 0.94 + 0.15 and furosemide + captopril = 0.99 + 0.14). Captopril induced a higher increment than furosemide (p < 0.001) and their association even a higher increment (p < 0.001) than any single drug.Thus captopril and/or furosemide increased arterial compliance in heart failure but not in healthy subjects, possibly through changes in arterial wall edema and smooth muscle contraction.
Coronary artery to middle cardiac vein fistula following endomyocardial biopsy in a heart transplant patient
Authors: Yeoh Joon Kuan , Anderson Stanley T. , Federman Jacob , Esmore Don 
Published: March 2007

AbstractCoronary artery fistulas draining directly into the right ventricle have been recognised as a complication of transvenous endomyocardial biopsy procedures performed in heart transplant recipients. We report a case where a fistula drained into the middle cardiac vein and outline the possible mechanism of occurrence and its prevention. The diagnostic and therapeutic aspects of these “acquired” fistulas are reviewed.
Coronary artery quantitation and data management system for paired cineangiograms
Authors: Leung Wing‐Hung , Sanders William , Alderman Edwin L. 
Published: March 2007

AbstractA computerized system designed to optimize the quantitation of coronary vessels on 35 mm cineangiograms is described and validated. Because the system has two cine film digitizers, it processes paired coronary arteriograms for the evaluation of serial changes in coronary arteries. A database system was specifically designed for the storage of coronary artery quantitation data which resides on a file server in a local area network and may be accessed by multiple workstations. In radiographic phantom studies of nine contrast‐filled lucite cylinders of known size, the overall accuracy and precision for the measured diameters were 0.069 mm and 0.066 mm respectively. Measurements of minimum diameter and percent diameter stenosis of 21 coronary lesions selected from 17 routine cineangiograms showed high degree of intraobserver and interobserver reproduclbllity.
Morphological changes of coronary stenosis after repeated balloon angioplasties: A quantitative angiographic study
Authors: Bauters C. , Lablanche J. M. , Leroy F. , Bertrand M. E. 
Published: March 2007

AbstractTo study the sequential changes of an atherosclerotic narrowing after repeated balloon dilatation, we reviewed the coronary angiograms of 11 patients who underwent at least 3 percutaneous transluminal coronary angloplasties of the same coronary segment for two restenoses. No significant changes in reference and stenosis diameters were found when comparing the three successive stenosis, but lesion length and stenosis area progressively increased. The identification of these morphological changes after repeated angioplasties may be of interest in the management of recurrent restenosis.
Contralateral femoral neuropathy: An unusual complication of anticoagulation following PTCA
Authors: Gaglani Rajesh D. , Turk Ashfaq A. , Mehra Mandeep R. , Beaver Wayne L. , Lach Ralph D. 
Published: March 2007

AbstractThis case report describes the occurrence of femoral neuropathy secondary to a hematoma of the iliacus muscle. This unusual complication was a result of heparin therapy following Percutaneous Transluminal Coronary Angioplasty (PTCA). We have reviewed the anatomic correlates, mechanism, and treatment options of this condition.
Angiographically documented thrombotic coronary artery occlusion secondary to mild nonpenetrating thoracic trauma
Authors: Voyce Stephen J. , Ball Steven P. , Gore Joel M. , Shine William J. , Weiner Bonnie H. 
Published: March 2007

AbstractA 22‐yr‐old man was found to have a subtotally occluding thrombus in the proximal left anterior descending (LAD) coronary artery shortly after suffering mild blunt chest trauma. After 6 days of anticoagulant therapy, the LAD appeared angiographically normal.
Acute myocardial infarction after blunt chest trauma in young people: Need for prompt intervention
Authors: Calvo Orbe L. , Garcia Gallego F. , Sobrino N. , Sotillo J. , Lopez‐Sendon J. L. , Oliver J. , Coma I. , Frutos A. , Sobrino J. A. , Navarro J. M. 
Published: March 2007

AbstractWe describe four cases of acute myocardial infarction in young patients, secondary to blunt chest trauma. One case was treated with intracoronary thrombolysls and angioplasty, two cases received systemic thrombolysis, and the last one did not have any reperfusion therapy. The coronary angiograms of the left anterior descending artery showed thrombosis in two cases, coronary dissection in one case, and no morphological lesions in the other. We encourage the early performance of angiographic studies in these patients, adjusting the therapy to their pathophysiologic mechanism.
Intravascular stenting of the right internal mammary artery
Authors: Bajaj Ravi K. , Roubin Gary S. 
Published: March 2007

AbstractDespite its tortuous course and small caliber, percutaneous transluminal coronary angioplasty of the internal mammary artery can be performed with a high initial success rate (82–94%). The successful deployment of a balloon expandable coll stent at the mid‐right internal mammary artery in a patient with recurrent stenosis of that graft is reported.
Balloon expandable stent implantation of a stenosis at the origin of the left internal mammary artery graft: A case report
Authors: Almagor Yaron , Thomas Jack , Colombo Antonio 
Published: March 2007

AbstractWe describe a case of percutaneous transluminal coronary angioplsty in which we implanted a balloon expandable Palmaz‐Schatz stent into a high‐grade restenosed lesion at the origin of the left internal mammary graft.
Coronary‐subclavian steal: An unusual cause of angina pectoris after successful internal mammary‐coronary artery bypass grafting
Authors: Breall Jeffrey A. , Kim Ducksoo , Baim Donald S. , Skillman John J. , Grossman William 
Published: March 2007

AbstractCoronary‐subclavian steal syndrome is a rare cause of angina pectoris after bypass grafting using the internal mammary artery. We report the 11th case in the literature and review the pathophysiology and treatment of this disorder. We also review appropriate screening for this possibly increasing, yet preventable disorder.
Intracoronary verapamil for the treatment of distal microvascular coronary artery spasm following ptca
Authors: Pomerantz Richard M. , Kuntz Richard E. , Diver Daniel J. , Safian Robert D. , Baim Donald S. 
Published: March 2007

AbstractDistal microvascular spasm is a somewhat uncommon occurrence following PTCA and often does not respond well to nitroglycerin. We report several patients who developed distal microvascular spasm that was refractory to intracoronary nitroglycerin but responded promptly to intracoronary verapamil.
Rotational ablation of chronic coronary occlusions
Authors: Schechtmann Norberto S. , Rosenblum Joseph , Stertzer Simon H. , Hidalgo Benito , Baciewicz Peter A. , Feind Carl R. , Ward Kathleen , Myler Richard K. 
Published: March 2007

AbstractRotational ablation was performed successfully in three chronic coronary occlusions. At 3 months follow‐up, two of the three lesions were patent. These cases illustrate the overall advantages and unique technical aspects of this device.
Effects of rotational atherectomy in normal canine coronary and diseased human cadaveric arteries: Potential for plaque removal from distal, tortuous, and diffusely diseased vessels
Authors: Smalling Richard W. , Cassidy David B. , Schmidt Waldemar A. , Barrett Robert , Fulford Susan , Kirkeeide Richard L. 
Published: March 2007

AbstractTo test the hypothesis that tortuous, diseased vessels could be successfully treated with a flexible rotational atherectomy device we evaluated the BARD atherectomy device with quantitative angiography and histology in normal canine coronary arteries and diseased human below‐knee amputation specimens. The mid left anterior descending and the circumflex vessels were treated in 4 dogs serially with 1 wk separating treatments. The acute and follow‐up anterior descending artery size was unchanged (1.41 mm before, 1.39 mm after, and 1.59 mm at 1 week). Similar findings were obtained in the circumflex vessels. In 4 adult human amputated legs, diseased peroneal or tibial arteries were treated with a significant reduction in the percent luminal diameter stenosis from 62.75 prior to intervention to 36.5 following intervention (p = 0.021). The luminal diameter increased from 0.81 to 1.54 mm (p = 0.06). In 2 canine arteries there was histologlc evidence of localized perforation of the arterial wall, but there was no angiographic evidence of perforation or dissection and no significant myocardial necrosis in the distribution of the treated vessels at 1 wk. The majority of the diseased human vessels demonstrated smoothly cut atheromas with sparing of the media. The rotational atherectomy catheter system holds promise for removal of plaque in relatively small, diffusely diseased, tortuous vessels.
Lipids and fatty acids and their relationship to restenosis
Authors: Foley Jerome B. , Younger Kate , Foley David , Kinsella Anthony , Molloy Martin , Crean Peter A. , Gearty Gerry , Gibney Michael , Walsh Michael J. 
Published: March 2007

AbstractOne hundred consecutive patients had fasting lipids and percutaneous fat biopsy performed at the time of percutaneous transluminal coronary angioplasty to determine if there was an association between restenosis and lipids or fatty acids. Angiographic follow‐up and complete lipid and fatty acid results were available in 82 patients. Restenosis occurred in 37/82 (45%). Total cholesterol, triglyceride, high density lipoprotein, low density lipoprotein, and apolipoproteins A1 and B were not associated with restenosis. There was a significantly lower level of the monounsaturated fat palmitoleic acid (p < 0.02), a trend towards a lower level of the monounsaturated fat oleic acid (p < 0.09), and a trend towards a higher level of the saturated fat plamitic acid (p < 0.08) in the restenosis group. The polyunsaturated fatty acids were not associated with restenosis.We conclude that lipids are not significantly associated with restenosis, and that lower levels of monounsaturated fatty acids may increase the risk of restenosis.
Patient tolerance of loxaglate and lopamidol in internal mammary artery arteriography
Authors: Miller Robert M. , Knox Margot 
Published: March 2007

AbstractTo compare discomfort caused by ioxaglate and iopamidol, 25 patients scheduled for coronary angiography including internal mammary arteriography were studied. Each patient received both agents. Data were available on 22 randomly selected patients who completed the protocol. Two patients were withdrawn because of unsuccessful internal mammary artery cannulation and one because of idiosyncratic reaction to diazepam. After the internal mammary artery injections, the short‐ form McGill Pain Questionnaire (SF‐MPQ) was completed to evaluate the patient response. loxaglate caused significantly less discomfort than iopamidol. Word scale (WS) p < .05; visual analog scale (VAS) p < .05. We conclude that ioxaglate is much better tolerated than iopamidol in internal mammary arteriography.
Sitting up post angioplasty: A new sheath technology
Authors: O'Connor Heather E. , Browne Kevin F. , Bourne George , Brenner Alan S. 
Published: March 2007

AbstractA new angioplasty sheath has been developed which permits a patient to sit up to a 60 degree Semi‐Fowler position post angioplasty with the sheath in place. To determine the safety of this device, we studied eleven (11) patients undergoing Percutaneous Transluminal Coronary Angioplasty (PTCA) compared with 11 PTCA patients treated in a standard fashion.The patients were evaluated for the length of time the sheath remained in place (study 17 ± 6 hours versus control 19 ± 5 hours), the time required to achieve hemostasis upon sheath removal (66 ± 52 minutes versus 81 ± 89 minutes), and the need for analgesics (frequency of 1.9 times versus frequency of 6.4 times per patient). Complications in the study group were 0 episodes of severe bleeding at the insertion site versus 1 episode in the control group, slight oozing in 8 study patients versus 7 control patients, small hematoma in 2 study patients versus 1 control patient, and large hematoma formation in 1 study patient versus 0 control patients.In summary, the use of a soft, flexible sheath allows the patient to safely site up in the Semi‐Fowler position post PTCA with significant improvement of discomfort.
Role of superficial femoral artery puncture in the development of pseudoaneurysm and arteriovenous fistula complicating percutaneous transfemoral cardiac catheterization
Authors: Kim Ducksoo , Orron Dan E. , Skillman John J. , Kent K. Craig , Porter David H. , Schlam Bertrand W. , Carrozza Joseph , Reis Gregg J. , Baim Donald S. 
Published: March 2007

AbstractOf 13,203 transfemoral diagnostic and therapeutic cardiac catheterization procedures performed between January 1,1980 and December 31,1990,73 (0.55%) were complicated by pseudoaneurysm (PA) formation, and 15 (0.11%) by arteriovenous fistulas (AVF). The rate of PA increased progressively from 0.44% (1980–1987), to 0.59% (1987–1989), to 0.92% (1990), with no corresponding change in the incidence of AVF. The rising incidence of PA complicating transfemoral cardiac catheterization was associated closely with the use of larger diameter catheters and aggressive antiocoagulation during coronary interventions, but findings during surgical repair suggested that puncture of the superficial femoral (SFA), rather than the common femoral artery (CFA), was an important avoidable cause of some PA and AVF. A technique for fluoroscopic localization of the puncture site to avoid inadvertent SFA puncture and the associated increased risk of complication is proposed.
Reduction of radiation exposure to the cardiologist during coronary angiography by the use of a remotely controlled mechanical pump for injection of contrast medium
Authors: Grant S. C. D. , Bennett D. H. , Mather J. M. 
Published: March 2007

AbstractSelective coronary cineangiography was carried out in 103 consecutive patients. In half the examinations (53) injection of contrast medium was performed by hand using a syringe, with the cardiologist standing in the usual position next to the X‐ray table. In the other half (50) contrast medium was injected by a remotely controlled mechanical pump whilst the cardiologist stood well away from the X‐ray source. Radiation dose to the lens of the cardiologists eye was estimated for the two groups by measurement of head badge dosimetry. In the first group (hand injection) total radiation dose was 1.30 mSv; in the second group (mechanical injection) it was reduced five‐fold, to 0.25 mSv.This technique therefore represents an important means of achieving substantial reductions in radiation exposure to cardiologists.
Late transcatheter removal of a rashkind pda occlusion device for persistent hemolysis using a modified transseptal sheath
Authors: Grifka Ronald G. , O'Laughlin Martin P. , Mullins Charles E. 
Published: March 2007

AbstractA patient developed hemolysis and hematuria 2 d after placement of a 12 mm Rashkind PDA occlusion device. Six days after placement, the device was snared from the ductus arteriosus and removed through a modified transseptal sheath. A 17 mm PDA occlusion device was successfully placed in the PDA, with resolution of the hematuria.
Infection prevention guidelines for cardiac catheterization laboratories
Authors: Heupler Frederick A. , Heisler Mary , Keys Thomas F. , Serkey Janet ,   Society for Cardiac Angiography and Interventions Laboratory Performance Standards Committee
Published: March 2007

AbstractThe following guidelines for prevention of catheterization laboratory infections are based on standard precautions for infection prevention in surgical wounds. Specific recommendations for patient preparation include proper methods for hair removal, skin cleaning and draping, antibiotic prophylaxis, wound irrigation and dressing, and sheath removal.Sterile precautions should be more vigorous for cutdown procedures compared to percutaneous. Caps, masks, gowns, and gloves help to protect both the patient and operator. Handwashing is the most important procedure for preventing infections. Maintenance of the catheterization laboratory environment includes appropriate cleaning, limitation of traffic, and maintenance of adequate ventilation. Proper catheterization technique and appropriate use of sterile equipment will decrease the wound infection rate.Protection of personnel may be accomplished by proper gowning and gloving, disposal of contaminated equipment, and care of puncture wounds and lacerations. All personnel should receive vaccination for hepatitis B.
Nondegenerate π‐Donor/π‐Acceptor [2]Catenanes Containing Proton‐Ionizable 1H‐1,2,4‐Triazole Subunits: Synthesis and Spontaneous Resolution
Authors: Alcalde Ermitas , Pérez‐García Lluïsa , Ramos Susana , Stoddart J. Fraser , White Andrew J. P. , Williams David J. 
Published: March 2007

AbstractChirality can hold the key to inducing directionality of motion in components of molecular devices. With this idea in mind, we describe here 1) the template‐directed synthesis of two [2]catenanes wherein cyclobis(paraquat‐p‐phenylene) is interlocked with polyether macrocycles containing, in addition to one 3,5‐bis(oxymethylene)‐1H‐1,2,4‐triazole unit, either one 1,4‐dioxybenzene or one 1,5‐dioxynaphthalene ring system. We also report 2) the full characterization of both [2]catenanes by fast atom bombardment mass spectrometry (FABMS), X‐ray crystallography, and dynamic 1H NMR spectroscopy. We reveal 3) the fact that the [2]catenanes not only exist, both in the solution‐state and in the solid‐state, as strictly one of the two possible translational isomers, but that they also exhibit spontaneous resolution on crystallization leading to formation of homochiral crystals, as indicated by X‐ray crystallography and circular dichroism (CD) experiments. Finally, we comment 4) on the chances of switching these catenanes chemically.
Titanacyclobutenes or Titanium Vinyl Carbene Complexes? Reactivity of Organotitanium Species Generated by the Reaction of γ‐Chloroallyl Sulfides with a Titanocene(II) Reagent
Authors: Shono Tomohiro , Kurashige Rie , Mukaiyama Ryo , Tsubouchi Akira , Takeda Takeshi 
Published: March 2007

AbstractThe reactivity of the organotitanium species generated by the reductive titanation of γ‐chloroallyl sulfides with the titanocene(II) reagent [Cp2Ti{P(OEt)3}2] was studied. The organotitanium species formed from α‐monosubstituted γ‐chloroallyl sulfides reacted with 1,5‐diphenylpentan‐3‐one and styrene to produce conjugated dienes and vinyl cyclopropanes as major products, thus suggesting the formation of vinyl carbene complexes as intermediates. On the contrary, the organotitanium species generated from acyclic β,γ‐disubstituted γ‐chloroallyl sulfides revealed titanacyclobutene‐like reactivity, and their reaction with 1,5‐diphenylpentan‐3‐one produced homoallyl alcohols. These organotitanium species did not react with styrene, but did react with dichlorophenylphosphine to afford phosphacyclobutenes. In the case of β‐monosubstituted, γ‐monosubstituted, and α,γ‐disubstituted γ‐chloroallyl sulfides, the organotitanium species reacted with both 1,5‐diphenylpentan‐3‐one and styrene. The former reaction produced homoallyl alcohols and the latter gave vinyl cyclopropanes or unconjugated dienes. These results suggest that titanacyclobutenes and/or titanium vinyl carbene complexes are produced by the reductive titanation of γ‐chloroallyl sulfides depending on their substitution patterns.