bluuebunny/crossref_metadata_2025_split huggingface dataset:
Catheter suction biopsy in diagnosis of an intrapulmonary artery tumor
Authors: Talley J. David , Franch Robert H 
Published: March 2007

AbstractUnsuspected intracardiac masses are occasionally encountered when cardiac catheterization is performed in a patient with right ventricular or pulmonary artery occlusive disease. In one of two patients, suction biopsy of the mass has been successful in obtaining a histological diagnosis. The method and its contraindications are discussed.
Detection of right atrial myxoma by coronary cinearteriography
Authors: Levin Howard , Cha Se Do , Sumathisena  , Gonzalez‐Lavin Lorenzo , Gooch Alden S , Maranhao Vladir 
Published: March 2007

AbstractDuring routine coronary cinearteriography, a large, right atrial myxoma was detected in a patient with angina pectoris. It was clinically unsuspected and was found at surgery to extend partially into the left atrium.
Tandem balloon catheter for coronary angioplasty
Authors: Finci Leo , Meier Bernhard , Steffenino Gluseppe , Rutishauser Wilhelm 
Published: March 2007

AbstractThe Tandem balloon catheter is a triple lumen steerable catheter for coronary angloplasty with two separately inflatable balloons of different diameters. Indications and results of 26 consecutive patients treated with a Tandem balloon catheter are reviewed. Adequate distal pressure measurements were obtained in 71% of the cases. In ten patients, the Tandem balloon catheter was selected for two stenoses in different segments of the same coronary artery. Angioplasty was successful for all lesions in five and for at least the strategic lesions in five patients (In one only after changing to a single‐balloon catheter). In the seven patients with stenoses in two different coronary arteries of various calibers, angioplasty was successful for both vessels in three and for one vessel in four patients. In the six patients with a very tight stenosis, where the Tandem balloon catheter was selected to predilate with the small balloon, the procedure was technically successful in all, but there was a myocardial infarction in one patient. In the three patients with a chronic total occlusion, where the stiffness of the Tandem balloon was the reason for selection, one recanalization was successful. The Tandem balloon catheter provides a handy tool for complex coronary angioplasty. It offers comparable ease in manipulation and pressure transmission and may save time, money, and radiation exposure by avoiding cathether exchanges.
A new technique for cannulation of the coronary sinus from the femoral vein
Authors: Dehmer Gregory J , Schmitz James M , Malloy Craig R 
Published: March 2007

AbstractPrevious techniques for cannulation of the coronary sinus have required entry into the right atrium from the superior vena cava. We describe a new technique for cannulation of the coronary sinus from the femoral vein using a standard, unmodified Simmons II catheter. This method was successful in 97% of the patients attempted. The method for using this catheter from the femoral route is described.
Anticoagulation with heparin during cardiac catheterization and its reversal by protamine
Authors: Dehmer Gregory J. , Haagen Donald , Malloy Craig R. , Schmitz James M. 
Published: March 2007

AbstractThe duration of effective anticoagulation with heparin during cardiac catheterization and angiography was determined in 201 patients. Effective anticoagulation was defined as prolongation of the activated partial thromboplastin time (APTT) by 2 or more times the upper limit of normal. When the procedure was completed within 40 min of heparin administration, all patients were anticoagulated adequately. The incidence of inadequate anticoagulation ranged from 9% to 25% as the time from heparin administration increased to 89 min. Procedures completed more than 90 min after heparin administration had a 58% incidence of inadequate anticoagulation. A protocol to estimate the appropriate protamine dose was developed based on experience accumulated in the first 78 patients and tested subsequently in 101 consecutive patients. Clotting studies returned to the normal range in 92% of the patients. The mean APTT decreased from 84.1 ± 19.4 to 27.4 ± 2.5 sec (p <.001) after protamine. Patients who did not correct to normal after protamine remained only 2.8 ± 1.4 sec (range 0.7–;–;5.5 sec) above normal. These data provide an estimate of the duration of anticoagulation during cardiac catheterization and angiography and demonstrate the feasibility of a simple and reliable method to reverse the effects of heparin.
Sequential dilatation of septal and left anterior descending artery: Single guiding catheter and double guide wire technique
Authors: Piscione Federico , Beatt Kevin , De Feyter Pim J. , Serruys Dr.Patrick W. 
Published: March 2007

AbstractA new technique was used to dilate sequentially a bifurcation lesion involving the left anterior descending artery and the origin of a large septal branch. Two steerable long guide wires (300 cm) were advanced through a single guiding catheter and placed across each lesion. The balloon catheters were introduced into the target arteries for angioplasty one at a time over the pre‐positioned guide wires. After the septal branch had been successfully dilated, the balloon catheter was completely withdrawn from the manifold and a second balloon catheter positioned in the left anterior descending artery over the guide wire already placed across the stenosis. Such a technique is feasible and safe, and overcomes the potential risks of the conventional kissing balloon technique.
Intracoronary thrombolysis in evolving isolated right ventricular infarction
Authors: Fujita Masatoshi , Sasayama Shigetake , Sakurai Tsunetaro , Nonogi Hiroshi 
Published: March 2007

AbstractIn a 52‐year‐old man with severe chest pain of 3 hours duration and ST‐segment elevation in leads V1 and V2, a nondominant right coronary artery was recanalized by an intracoronary infusion of urokinase. Coronary cineangiography revealed a total occlusion of the nondominant right coronary artery and no significant narrowing of the left coronary artery. Hemodynamic studies during the acute phase of myocardial infarction demonstrated an increase of right atrial mean pressure in association with normal pulmonary capillary wedge pressure. Following the recanalization, chest pain disappeared and hemodynamic alterations were corrected. The purpose of this report is to document a case of isolated right ventricular infarction due to a nondominant right coronary artery occlusion.
Thromboembolic complications of percutaneous transluminal coronary angioplasty for myocardial infarction
Authors: Cameron James , Buchbinder Maurice , Wexler Lewis , Oesterle Stephen N. 
Published: March 2007

AbstractTo determine the incidence of thromboembolic complications of percutaneous transluminal coronary angioplasty (PTCA) in the setting of recent and acute myocardial infarction, the clinical sequelae and coronary angiographic findings were examined in a series of 13 patients who underwent PTCA either as acute intervention during the infarction or as treatment for recurrent myocardial ischemia that occurred soon after the initial completed infarction. In all cases, the angiographic appearance in the infarct‐related artery was that of thrombus in the setting of total or subtotal occlusion. Balloon dilatation, without antecedent thrombolytic therapy, was performed in 14 arteries and was successful in establishing reperfusion with reduction of the degree of intraluminal narrowing to less than 50% in all cases. Residual thrombus at the site of inflation was noted in two cases (15%), and embolization was noted in four cases (29%), for an incidence of complication of 44%. In five of six instances in which either residual thrombus or embolization were noted, the initial infarction had occurred greater than 24 h before. In only one of seven cases in which PTCA was used as acute intervention during infarction of less than 4 h duration was the presence of residual thrombus noted after PTCA. Therefore, these findings suggest that thromboembolic complications after PTCA in the setting of recent or acute myocardial infarction are uncommon when the syndrome is less than 4 h duration; however, complications are relatively frequent when infarction has occurred greater than 24 h before. PTCA as a primary intervention in this latter setting should be approached cautiously.
Immediate balloon inflation during ventricular fibrillation complicating coronary angioplasty — an alternative technique to angioplasty system withdrawal: Case reports and review
Authors: Ferguson David W. , Chambers Charles E. 
Published: March 2007

AbstractTwo patients are presented in whom ventricular fibrillation occurred during otherwise uncomplicated percutaneous transluminal coronary angioplasty. Rather than withdrawing the angioplasty dilatation system in place in the coronary vessel before instituting resuscitation procedures, immediate balloon inflation was performed while a defibrillator was charged. During balloon inflation, both patients were countershocked, and they recovered stable cardiac rhythm. Postresuscitation hemodynamic and angiographic analysis revealed successful angioplasty results. This report describes an alternative technique to immediate removal of the balloon dilatation system for cardiac arrest complicating coronary angioplasty. Theoretical advantages and potential disadvantages of this technique are discussed.
Diffuse coronary artery to left ventricular communications: An unusual cause of demonstrable ischemia
Authors: Duckworth Frederick , Mukharji Jhulan , Vetrovec George W. 
Published: March 2007

AbstractDiffuse communications between both the left and right coronary arteries and the left ventricle were found in a 46‐year‐old man presenting with typical angina pectoris. Symptoms were reproducible on treadmill exercise and ST segment depression, and redistribution septal defects were documented on stress Thallium scintigraphy. Antianginal drugs were effective in treating the patient's symptoms. Only 13 patients with similar anatomy have been previously described. This report is the first to document reproducible objective evidence of ischemia in such patients. The literature is reviewed and possible mechanisms of ischemia and its treatment discussed.
Angiography of the internal mammary artery via the contralateral brachial artery
Authors: Dorros Gerald , Lewin Ruben F. 
Published: March 2007

AbstractA new technique for angiography of the contralateral internal mammary artery via the brachial artery approach is described. A Simmons (sidewinder) catheter is maneuvered into the ascending aorta and is rotated as to assume its performed shape. The catheter is advanced into the contralateral subclavian artery beyond the internal mammary artery. With the aid of an exchange wire, the Simmons catheter is replaced with a preformed internal mammary angiographic catheter. The internal mammary artery is cannulated, and angiography is performed. Fifty patients were successfully studied by means of this technique without incident. In 20 cases, the ipsilateral internal mammary artery was subsequently visualized. Brachial angiographers may prefer to add this technique to their repertoire.
A modified hand injector for percutaneous transluminal coronary angioplasty
Authors: Weiner Ronald I. , Maranhao Vladir 
Published: March 2007

AbstractThis paper introduces a modified hand injector for percutaneous transluminal coronary angioplasty (PTCA). The new hand injector allows powerful injections to be performed through No. 8 or 9 French guiding catheters with little strain on the operator's hands. This device may reduce the time and cost of the procedure and would be useful in laboratories performing a high volume of PTCAs.
Percutaneous transluminal valvuloplasty in calcific aortic stenosis: The double balloon technique
Authors: Dorros Gerald , Lewin Ruben F. , King James F. , Janke Lynne M. 
Published: March 2007

AbstractThe double balloon technique for aortic valvuloplasty using a combined brachial and femoral artery approach with readily available angioplasty equipment is described. Online hemodynamic assessment of the patient during the procedure was provided by continuous, reflective spectorphotometric monitoring of the pulmonary artery mixed venous oxygen saturation and the arterial pressure in the femoral sheath. Successful valvuloplasty was achieved in 70 patients with the transaortic peak‐to‐peak systolic gradient reduced from 77.6 ± 28 to 27.8 ± 15 mmHg (P <0.001), the mean gradient from 62.0 24 to 26.0 ± 15 mmHg (P <0.0007), and the aortic valve area increased from 0.56 ± 0.3 to 1.03 ± 0.6 cm2 (P <0.05). No significant complications were encountered. The double balloon technique for aortic valvuloplasty is an acceptable alternative method to the single balloon technique.
Blood velocity in the coronary artery circulation: Relation to thromboxane A2 levels in coronary sinus in patients with angiographically normal coronary arteries
Authors: Di Donato Marisa , Fantini Fabio , Maioli Mauro , Prisco Domenico , Rogasi Pier Giorgio , Serneri Gian Gastone Neri 
Published: March 2007

AbstractIn the present study, we report the finding that some patients with spontaneous typical angina and angiographically normal coronary arteries present an abnormal cardiocoronary capacity to produce thromboxane A2, both in basal conditions and after sympathetic stimulation. The levels of thromboxane A2 in coronary sinus are significantly correlated to the rate of clearance of contrast medium in coronary circulation. Such a finding might be useful in better understanding the interesting syndrome of angina with normal coronary arteries.
Partial dehiscence of a porcine prosthesis in association with aortic annular separation producing a false aneurysm of the ascending aorta
Authors: Come Patricia C. , Carl Lisa V. , Leeman David , Abelmann Walter H. , Weintraub Ronald M. 
Published: March 2007

AbstractA 44‐year‐old man developed intermittent left bundle branch block followed by complete heart block 18 months after aortic valve replacement, and aortic insufficiency and hemolytic anemia 5 years postoperatively. These abnormalities were associated with operative findings (7 years after aortic valve replacement) of total disruption of the aorta at the level of the aortic annulus. Echocardiographic findings of an enlarged and unusually shaped “aortic root” and angiographic findings of abnormally high origin of the coronary arteries relative to the valve ring, which should have suggested the diagnosis 2 years prior to successful surgical repair, are presented.
Pseudonormalization of T‐waves during coronary angioplasty
Authors: Zack Paul M. , Aker Umit T. , Kennedy Harold L. 
Published: March 2007

AbstractMyocardial ischemia has been reported occasionally to produce transient T‐wave normalization in certain patients. We present a case of “pseudonormalization” of T‐waves occurring in the setting of coronary angioplasty. This case illustrates the potential of the transient coronary occlusion which occurs during coronary angioplasty as a model for understanding acute myocardial ischemia.
Angled tip of the steerable guidewire and its usefulness in percutaneous transluminal coronary angioplasty
Authors: Voda Jan 
Published: March 2007

AbstractTheoretical analysis and clinical evaluation of single and multi‐angled guidewires as an alternative to widely used J‐wires suggested that the major determinants of the wire function are the shortest distance between the tip and a long axis of the wire‐reaching distance (RD), angulation of the tip, and the length of the angled arm. Their relationship can be characterized by a fomula; reaching distance = sin β × length of the arm. The two clinically most useful multiple angulations—double and triple angles—were evaluated in 54 patients in whom commercial J‐wire failed to pass the lesion in 120 s. This value was compared with an average time of 57.90 ± 3.9 s needed to pass an angled, individually shaped guidewire from the tip of the guiding catheter through the lesion. (P < < than 0.001 or highly significant.) All patients had tortuous vessels, sharply angled branches, and the largest diameter of the stenosed vessel less than 50% of the largest diameter of the left main coronary artery. Thirty‐seven lesions were in the obtuse marginal arteries and 17 in the diagonal arteries. The study suggested that angled guidewires shaped according to described guidelines have superior success to commercial, unshaped J‐wires in instrumentation of the tortuous vessels with angled branches and markedly varying diameter.
Endomyocardial biopsy with a disposable bioptome: A modified technique
Authors: Lew Brian T. , Olivari Maria Teresa , Levine T. Barry 
Published: March 2007

AbstractRight ventricular endomyocardial biopsy can be obtained successfully with a manually shaped flexible disposable bioptome introduced in the right jugular vein. Introduction of a curve at the tip provides better control of the bioptome so that a short introducer sheath can be used and the right ventricular sampling site can be varied.
Use of 5 French catheters for cardiac catheterization and coronary angiography: A critical review
Authors: Brown Robert I. G. , MacDonald A. Craig 
Published: March 2007

AbstractWith the number of outpatient cardiac catheterizations increasing, much attention has recently been focused on the use of 5 French catheters for cardiac catheterization and selective coronary angiography. However, there are few reports in the literature regarding the technical aspects of their use or the quality of cineangiograms obtained. We reviewed our experience with these catheters in our first 100 consecutive cases. All cineangiograms were diagnostic, though 9% were deemed only of fair quality (incomplete luminal filling in some frames) by two experienced observers. Technical problems encountered with the use of these catheters included instability of the right Judkin's catheter in the right coronary ostium owing to high torquability, streaming of contrast during left coronary injections, and difficulty entering the left ventricle with a pig‐tail catheter.
Catheter entrapment in a Bjöurk‐Shiley prosthesis in aortic position
Authors: Kober Gisbert , Hilgermann Reinhard 
Published: March 2007

AbstractThis report describes a lethal complication which occurred during retrograde catheterization of the left ventricle across a Björk‐Shiley prosthesis. The authors were called upon to testify as experts in malpractice proceedings in this case.After an 8F Sones catheter had been passed through the small side orifice of the prosthesis and three ventriculograms had been carried out, it was apparent that the movement of the tilting disc valve was considerably impaired and that the catheter had become irreversibly trapped. As a consequence the patient died of irreversible left heart failure before an operation could be performed.Consequently passing a tilting disc valve can no longer be considered as completely safe. This procedure should only be used under exceptional circumstances requiring very strict indication. If such an intervention is necessary, then it should only be performed by experienced cardiologists, who should take all possible precautions to reduce risks.
Acute percutaneous transluminal coronary angioplasty complicated by embolism to a coronary artery remote from the site of infarction
Authors: Saenz Carlos B. , Harrell R. Ronnie , Sawyer Iii James A. , Hood William P. 
Published: March 2007

AbstractPercutaneous transluminal coronary angioplasty has emerged as a mode of treatment in patients with both chronic and acute coronary syndromes. Among the recognized complications of coronary angioplasty is coronary embolism. This case report describes a case of acute anterior myocardial infarction which was treated with angioplasty of the left anterior descending coronary artery. Postdilation angiography revealed obstruction of the posterior descending artery (in a left dominant system). The use of thrombolytic therapy previous to angioplasty is briefly discussed.
Endomyocardial diagnosis of cardiac lipomatosis
Authors: Cladellas Mercè , Abadal Maria Lluisa , Ballester Manel , Obrador Damià , Crexells Carles , Matias‐Guiu Xavier , Bordes Ramàn , Bonnin Oriol 
Published: March 2007

AbstractA patient with severe isolated right‐sided cardiac failure of unknown origin is presented in whom three right ventricular endomyocardial biopsies obtained in different bioptome positions disclosed a yellowish material which was confirmed at histological examination as fat. At operation, a complete replacement of atrial and ventricular myocardium by fat was noted. This previously unreported use of endomyocardial biopsy is emphasized, especially when the differential diagnosis of isolated right‐sided heart failure is considered.
complex coronary angioplasty: Use of extended and angled balloon catheters
Authors: Slack John D. , Pinkerton Cass A. 
Published: March 2007

AbstractCertain anatomical features of coronary artery stenoses are recognized to be associated with a high risk of acute closure during percutaneous transluminal coronary angioplasty. Balloon catheters with extended balloon lengths were developed and tested in nonsegmental stenoses and multiple stenoses in series. Balloon catheters with acute angulation were also designed and tested in stenoses located in tortuous, angulated arterial segments. Clinical experience with these unique balloon configurations is presented.
Translumbar coronary and brachiocephalic arteriography using a modified Desilets‐Hoffman sheath
Authors: Marcus Robert , Grollman Julius H. 
Published: March 2007

AbstractA translumbar sheath is described that is suitable for performance of selective coronary and brachiocephalic arteriography when the extremity arteries are blocked. The sheath has been adapted to a needle and catheter, which are introduced as a unit into the aorta at the T‐12 level. With the needle and catheter removed, the sheath can be used safely to exchange catheters for left ventriculography and selective studies of branches of the thoracic aorta without excessive retroperitoneal bleeding.
Quantitative analysis of coronary arteriograms by microprocessor cinevideodensitometry
Authors: Silver Kevin H. , Buczek Jo Ann , Esser PhD Peter D. , Nichols Allen B. 
Published: March 2007

AbstractA rapid microprocessor technique for mesuring the cross‐sectional area, diameter, and relative percentage stenosis of coronary atherosclerotic lesions by cinevideodensitometric analysis was developed and validated. Video images of projected 35‐mm coronary arteriographic cine frames were analyzed from cinevideodensitometric profile curves recorded for the catheter shaft, normal artery, and stenotic segment. In radiographic phantom studies of calibrated, contrast‐filled, plexiglass cylinders, cinevideodensitometric measurements correlated linearly with percentage relative stenosis (r = 0.98; SEE = 4.1%), diameter (r = 0.99; SEE = 0.12 mm), and cross‐sectional area (r = 0.99; SEE = 0.32 mm2). In postmortem studies of two patients dying after coronary arteriography, cross‐sectional areas of arterial segments measured by cinevideodensitometry correlated well (r = 0.99; SEE = 0.71 mm) with areas of acrylic resin casts of the coronary arteries. Intraobserver variability (r = 0.99; SEE = 2.6%) and interobserver variability (r = 0.96; SEE = 5.3%) of cinevideodensitometric measurements of coronary arteriograms were low. Additionally, percentage relative stenosis measured in the right anterior oblique projection correlated well with measurements in the left anterior oblique projection (r = 0.98; SEE = 0.11 mm2) of patients with eccentric stenotic lesions. Lastly, cinevideodensitometric measurements were significantly (p < 0.05) more reproducible than caliper measurements. This inexpensive dedicated microprocessor system provides rapid cinevideodensitometric measurements of coronary arterial dimensions, without requiring manual tracing of arterial segments or the major expense of a mainframe computer system.