bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experience with a double loop guiding catheter for angioplasty of the right coronary artery
Authors: El Gamal M. , Bracke F. , Bonnier J. , El Biltagiu S. , Michels R. , Relik T. , van Gelder L. 
Published: March 2007

AbstractAn 8 French (F) double loop guiding (DLG) catheter was developed for percutaneous transluminal coronary angioplasty (PTCA) of the right coronary artery (RCA) and tested in 80 patients: primary use in 59 patients, and after failure of an 8 F right Judkins guiding (RJG) catheter in 21 patients. Primary use resulted in stable intubation of RCA in 55 patients (93%), but PTCA was successful in 50 (91%). Five failures resulted from inability to cross or dilate the lesion. After failure of an 8 F RJG in 21 patients, successful stable intubation of RCA with a DLG was achieved in 19 patients (90%), but PTCA was successful in 17 patients (81%). Failure of RJGs in 21 patients resulted from inability to intubate the RCA in 12 patients, or inadequate back up support by the guiding in 9 patients. Conclusion: DLGs increased the success rate of PTCA of the RCA after failure of RJGs. © 1993 Wiiey‐Liss, Inc.
Placement of “biliary” stents in saphenous vein coronary bypass grafts
Authors: White Christopher J. , Ramee Stephen R. , Collins Tyrone J. , Escobar Alvaro , Jain Suresh P. 
Published: March 2007

AbstractAngioplasty of coronary saphenous vein grafts has been associated with less favorable results than in native coronary arteries owing to a higher acute complication rate and an increased incidence of restenosis. We placed 16 nonarticulated balloon expandable stainless steel “biliary” stents at the sites of 13 stenotic or occluded aortocoronary saphenous vein graft lesions in 11 patients. All of the lesions were stented successfully. There were no instances of stent thrombosis or stent embolism. The percent diameter stenosis was reduced from 85.5 ± 14.1% to 3.5 ± 4.4% (p < .001), and the minimal lumen diameter of the lesion increased from 0.7 ± 0.7 mm at baseline to 3.7 ± 0.2 mm (p < .001) after stent placement. We conclude that this noncoronary stent appears to be safe and effective for treating saphenous vein coronary bypass grafts. The high procedural success rate and excellent anglographic results are very encouraging, while the restenosis rates remain to be determined. © 1993 Wiiey‐Liss, Inc.
High‐Speed rotational ablation (rotablator®) for unfavorable lesions in peripheral arteries
Authors: White Christopher J. , Ramee Stephen R. , Escobar Alvaro , Jain Suresh , Collins Tyrone J. 
Published: March 2007

AbstractA strategy of using a single, conservatively sized percutaneous transluminal rotational ablation device with or without adjunctive balloon angioplasty was employed in 18 vessels in 17 patients selected because of unfavorable lesion morphology for balloon angioplasty alone. Fifteen patients had lower extremity occlusions and/or heavily calcified lesions and two patients had ostial renal artery stenoses. We were able to achieve a 94% (17/18 lesions) technical success rate, and a 94% (16/17 patients) clinical success rate. In the patients with lower extremity lesions, the baseline ankle‐brachial blood pressure index increased from 0.55 ± 0.15 to 0.90 ± 0.19 (p < .001) 1 day after the procedure. Follow‐up at 6.8 ± 2.8 months revealed clinical evidence of restenosis in only one patient. We conclude that a cost‐effective strategy of treating unfavorable lesions with a single Rotablator® burr and adjunctive balloon angioplasty is safe and effective. © 1993 Wiiey‐Liss, Inc.
Closure of a coronary cameral fistula following endomyocardial biopsies in a cardiac transplant patient with a detachable balloon
Authors: Hartog J. M. , van den Brand M. , Pieterman H. , di Mario C. 
Published: March 2007

AbstractEndomyocardial biopsy is the reference standard for the diagnosis of cardiac allograft rejection and is performed frequently in cardiac transplant patients. Biopsies are taken percutaneously via the right internal jugular or femoral vein [1,2]. Fistulas from coronary arteries into the right ventricle following endomyocardial biopsies are a relatively frequent finding (5–14%) [3–6]. Most of these fistulas are small angiographically, haemodynamically insignificant [5,6], and tend to disappear. We report a case of a haemodynamic significant coronary fistula, closed by a percutaneously introduced detachable balloon. © 1993 Wiiey‐Liss, Inc.
Retrieval of a migrated coronary stent by means of an alligator forceps catheter
Authors: Eeckhout Eric , Stauffer Jean‐Christophe , Goy Jean‐Jacques 
Published: March 2007

AbstractStent migration and embolization are well‐known complications of intracoronary stenting with balloon‐mounted stents. During an elective stenting procedure of a proximal right coronary artery stenosis, a 3.5 mm Wiktor stent (Medtronic Inc., Minneapolis) was displaced from its delivery balloon. The guiding catheter and the delivery system were withdrawn, leaving the stent around a 3 m 0.014 inch High Torque floppy guidewire (ACS, Santa Clara, CA) in the abdominal aorta. An 40 cm 5F Alligator Forceps catheter (Cook OB/Gyn., Spencer, IN), introduced through a cut‐off 8F coronary guiding catheter, allowed improved torque control of the retrieval catheter and a safe and successful withdrawal of the stent through the arterial introducer Sheet. © 1993 Wiiey‐Liss, Inc.
Guidelines for continuous quality improvement in the cardiac catheterization laboratory
Authors: Heupler Frederick A. , Ai‐Hani Arfan J. , Dear Wayne E. 
Published: March 2007

AbstractThe Laboratory Performance Standards Committee of the Society for Cardiac Angiography and Interventions has compiled guidelines for a quality improvement program for the cardiac catheterization laboratory. The first step is to identify “quality indicators” in order to quantify the results. The indicators must be risk‐adjusted to assure validity of comparative data.The second step is development of a data collection process that continues after the patient has left the catheterization laboratory. The third step, data evaluation, requires determination of normal ranges of occurrence rates and identification of adverse events that exceed these rates. An investigation should be undertaken to determine the processes and systems that may produce the undesirable outcome.The fourth step is creation of a solution to correct the deficiency. This may involve education, administrative intervention, or feedback. The final step is reassessment of the quality indicators to determine if the corrective action has been effective.© 1992 Wlley‐Liss, Inc
Deep venous thrombosis and pulmonary embolism following cardiac catheterization
Authors: Shammas Ronny L. , Reeves William C. , Mehta Prabodh M. 
Published: March 2007

AbstractWe report 4 cases of deep venous thrombosis and/or pulmonary embolism after diagnostic cardiac catheterization. Two of these cases followed left heart catheterization alone.© 1993 Wlley‐Liss, Inc
Effect of catheter positioning on the variability of measured gradient in aortic stenosis
Authors: Assey Michael E. , Zile Michael R. , Usher Bruce W. , Karavan Mark P. , Carabello Blase A. 
Published: March 2007

AbstractThe purpose of this study was to quantify the variation in measured aortic valve gradient and calculated aortic valve area when different techniques of cardiac catheterization were utilized. Hemodynamic assessment of aortic stenosis severity requires an accurately determined pressure gradient. In aortic stenosis, the presence of intraventricular pressure gradients and downstream pressure recovery within the aorta means that a range of aortic valve gradients could be measured in a given patient depending upon catheter position and measurement technique. To quantify the degree of variation in measured gradient and calculated aortic valve area, we generated transvalvular gradients by nine different techniques in 15 patients (11 men, 4 women; 29‐86 years old). Patients were divided into those with severe aortic stenosis (aortic valve area ≤ 0.6 cm2, n = 6) and those with moderately severe aortic stenosis (aortic valve area 0.61‐0.90 cm2, n = 9). Considerable variation in measured gradient and calculated aortic valve area was observed. The maximum variation in gradient was similar in severe and moderately severe aortic stenosis groups (33 mm Hg. vs. 32 mm Hg., p = NS). However, the variation in gradient as a percent of maximum gradient was greater (P < 0.05) in the moderately severe aortic stenosis group. The maximum variation in calculated aortic valve area was 0.1 cm2 in the severe group and 0.3 cm2 in the moderately severe group (P < 0.01). An intraventricular gradient, present in 13 of 15 (87%) patients, was partially responsible for the variation in pressure gradient measurement and calculated aortic valve area.We conclude that in patients with valvular aortic stenosis, catheterization technique has an important impact on the hemodynamic assessment of aortic stenosis severity. This is particularly true in patients with moderately severe aortic stenosis where any variation tends to represent a larger percentage of the total gradient.
© 1993 Wlley‐Liss, Inc
Selective injection of a left coronary artery arising anomalously from the posterior aortic sinus
Authors: Lawson Mark A. , Dailey Sharon M. , Soto Benigno 
Published: March 2007

AbstractSix cases of anomalous origin of the left main coronary artery arising from the posterior or noncoronary aortic sinus have been previously found at autopsy by nonselective aortic sinus injection and only once by selective injection. The seventh known case of this anomaly is demonstrated by selective injection that also reveals distal severe coronary artery disease.
© 1993 Wlley‐Liss, Inc
Right coronary artery cirsoid with fistulous connection to the coronary sinus
Authors: Tomai Fabrizio , Sommariva Luigi , Nudi Francesco , Gioffrè Gaetano , Chiariello Luigi 
Published: March 2007

AbstractA 61‐yr‐old woman was referred to our hospital for evaluation of a suspected right atrial myxoma. The transesophageal echocardiogram suggested the presence of an anomalous right coronary artery with fistulous connection to the coronary sinus. At cardiac catheterization, an oxygen stepup in the right atrium indicated a 1.3:1.0 left‐to‐right shunt. Aortic root angiography showed a large and calcified right coronary artery cirsoid draining to the coronary sinus, which appeared remarkably dilated. In this rare anomaly, cardiac catheterization is necessary, not only to quantify the magnitude of the left‐to‐right shunt, which is an important requirement for the indication to surgical treatment, but also to confirm the echocardiographic diagnosis.© 1993 Wlley‐Liss, Inc
Spontaneous coronary dissection treated with directional coronary atherectomy
Authors: Charney Richard , Breitbart Sheldon , Menegus Mark A. , Feld Michael , Golier Francis , Spindola‐Franco Hugo , Greenberg Mark A. 
Published: March 2007

AbstractWe report a case of spontaneous coronary dissection occurring in a middle aged male which was treated with thrombolytic therapy and directional coronary atherectomy. This technique provides a new option for treating this entity in the cardiac catheterization laboratory.© 1993 Wlley‐Liss, Inc
Mobile cardiac catheterization: Comparison with outpatient and inpatient catheterization at tertiary facilities
Authors: Elliott Charles M. , Bersin Robert M. , Elliott Allison V. , Fedor John M. , Gallagher John J. , Sellers Lisa J. , Simonton Charles A. , Svenson Robert H. , Hadley Wilson B. , Zimmern Samuel H. 
Published: March 2007

AbstractThe study group included 1,553 consecutive patients from areas serviced by our mobile catheterization laboratories: 719 procedures were performed in the mobile unit at their local hospitals, 277 were performed at a tertiary hospital with less than a 24 hr hospital stay, and 557 were performed at a tertiary hospital as inpatients. The indications for mobile catheterization were predominantly atypical chest pain, angina pectoris, or positive treadmill stress test, whereas patients with less than 24 hr hospitalization at the tertiary center had their catheterization performed for additional reasons. The majority of the inpatient indications were for recent myocardial infarction or unstable angina. Using the American College of Cardiology/American Heart Association (ACC/AHA) criteria for outpatient catheterization, the mobile catheterizations were performed safely with a complication rate of only 0.7% compared to a complication rate of 3.1% for inpatients demonstrating that a low risk group of patients can be prospectively identified and catheterized safely in the mobile setting. An extremely high risk group of patients with ongoing unstable angina and recent myocardial infarction was also identified which should undergo catheterization only at a tertiary center.
Combined spontaneous postpartum coronary artery dissection and pulmonary embolism with survival
Authors: Efstratiou Alain , Singh Baikunth 
Published: March 2007

AbstractA young woman who survived after suffering in the immediate postpartum period a spontaneous coronary dissection with resultant myocardial infarction and a pulmonary embolism with pulmonary infarct is presented. Diagnostic and therapeutic considerations for this unique occurrence are discussed and reviewed.
Bail‐Out stenting for left main coronary artery occlusion following diagnostic angiography
Authors: Sathe Sunil , Sebastian Martin , Vohra Jitu , Valentine Peter 
Published: March 2007

AbstractWe report a case of acute left main coronary artery occlusion treated with stenting of the left main artery. The patient had a severe ostial left main stenosis and after diagnostic coronary angiography developed a total occlusion of the left main artery with life threatening hemodynamic consequences. Stenting of the unprotected left main coronary artery was successfully performed as a salvage procedure.
Dilation of intra‐atrial baffle fenestrations: Results in vivo and in vitro
Authors: Nishimoto Kei , Keane John F. , Jonas Richard A. 
Published: March 2007

AbstractSpontaneous closure of intra‐atrial baffle fenestrations occurred early postoperatively following a Fontan procedure in three patients (ages 0.8–2 yr) and were reopened using transvenous balloon dilation. Following this clinical experience with this complication we studied the effects of high pressure balloons of different sizes on fenestrations created in polytetrafluoroethylene (PTFE) patches.The intra‐atrial baffle fenestration was found closed within hours after surgery in two patients and 32 days postoperatively in the other. Increasing edema, chest tube drainage, and renal dysfunction ensued rapidly. At catheterization the balloon dilation in two patients reduced the elevated right atrial pressure, edema, and pleural effusion and allowed an acceptable arterial saturation. In the other patient, with acidosis and a low cardiac output, transient cardiac arrest occurred following passage of the catheter through the fenestration and during later unsuccessful operation the fenestration, although open, was traversed by strands of clot. In the experimental study, a total of 45 fenestrations 4 mm in diameter were dilated with 5, 6, 7, 8, and 9 mm balloons. The fenestration areas remained increased significantly during the 14 days of observation in room air, with the larger balloons producing larger holes.Balloon dilation may be effective for spontaneous fenestration closure occurring in the early postoperative period after a fenestrated Fontan procedure. Our experimental data may be useful in selecting the balloon size in this setting.
Is intravascular ultrasound better than quantitative coronary arteriography to assess cardiac allograft arteriopathy?
Authors: Lowry R. W. , Kleiman N. S. , Raizner A. E. , Young J. B. 
Published: March 2007

AbstractOptimal methods to detect and quantify allograft arteriopathy have not been established. Both arteriography and intravascular ultrasound have been used to evaluate vessel lumen diameter and area and arterial wall thickness in patients following cardiac transplantation, although due to the anatomically diffuse nature of this disease, neither technique has been accepted as the diagnostic “gold standard”. To determine the usefulness of quantitative angiography to detect transplant‐related coronary artery disease compared to intravascular ultrasound, 25 patients underwent both procedures following cardiac transplantation (20 < 1 year, 5 > 1 year). Lumen diameter and area measurements of proximal coronary artery segments were compared using both techniques. Overall, lumen diameter and area measurements correlated closely between the two procedures, both for the early and late follow‐up patients. However, because of the ability to characterize changes more precisely in coronary vessel shape and wall thickness, intravascular ultrasound offered distinct advantages over routine coronary angiography and is probably the technique of choice to evaluate allograft arteriopathy.
Complete heart block complicating retrograde left ventricular catheterization: Case report and review
Authors: Shammas Nicolas W. , Lee John K. , Daubert James P. , Pomerantz Richard M. 
Published: March 2007

AbstractComplete heart block (CHB) following retrograde left ventricular catheterization is uncommon. We report a case of transient CHB in a patient with severe aortic stenosis and bifascicular block on the baseline surface electrocardiogram during retrograde left ventricular catheterization. The block resolved spontaneously without sequelae. A review of the literature using MedLine was performed and recommendations for temporary and permanent pacing are outlined.
Coronary revascularization directed by results of coronary doppler flow measurements
Authors: Nicholas John , Kipperman Robert 
Published: March 2007

AbstractWe present a case where Doppler coronary flow velocity and Doppler reserve measurement directed the decision to proceed with coronary artery revascularization. Measurement of coronary Doppler flow velocity and flow reserve can be useful to help evaluate angiographic “intermediate lesions.” The following case involves an indeterminate lesion. A patient was felt likely to have a high‐grade stenosis which could not be adequately visualized angiographically because of overlapping vessels. Largely based on the flow velocity and reserve data, the patient was referred for coronary artery bypass grafting.
The crumpled coronary: An enigma of arteriographic pseudopathology and its potential for misinterpretation
Authors: Hays John T. , Stein Bernardo , Raizner Albert E. 
Published: March 2007

AbstractA series of angioplasty cases is presented in which dynamic alterations in coronary artery configuration developed. These changes were suggestive of extensive, complex dissections. Several common features emerged in these cases of which interventional cardiologists should be aware. These features included complex vessel morphology (tortuous segments, anomalous takeoffs, and complex stenoses) and the use of certain types of PTCA hardware (Amplatz guiding catheters and 0.018‐inch wires).This phenomenon, termed pseudo narrowing, remains largely unrecognized. Identification of these characteristics and employment of proper management strategies will ensure a good outcome in these situations when they arise.
Microcoil embolization of large intercostal branches of internal mammary artery grafts
Authors: Sbarouni Eftihia , Corr Laura , Fenech Albert 
Published: March 2007

AbstractCoronary artery steal via a large unligated intercostal sidebranch of the internal mammary artery graft has been previously described in two case reports. We report a series of 7 patients with post‐operative angina in whom microcoil embolization of such branch was performed. In 5 patients in whom complete occlusion of the branch was achieved, anginal symptoms were relieved; in contrast the 2 patients with persistent flow through the intercostal branch remained symptomatic despite all their grafts being widely patent. We conclude that large unligated intercostal branches of the IMA graft may be related with post‐operative angina and their embolization is a simple, safe, and effective procedure.
Coronary spasm in patients with coronary ectasia
Authors: Suzuki Hiroshi , Takeyama Youichi , Hamazaki Yuji , Namiki Atsuo , Koba Shinji , Matsubara Hitoshi , Hiroshige Juichi , Murakami Mikitaka , Katagiri Takashi 
Published: March 2007

AbstractThe incidence of coronary ectasia (CE) and the relationship between CE and coronary spasm that was said not to be apt to occur in patients with CE were studied. The study consisted of 1,373 patients (including 1,008 patients with ischemic heart disease) who underwent cardiac catheterization. In 74 patients with CE, coronary spasm was tested in 33 patients subjected to acetylcholine (ACh) provocation and in 17 patients subjected to ergonovine (Ergo) provocation.CE was found in 74 patients (5.4%), and its incidence was significantly higher (6.7%) in patients with ischemic heart disease. In addition, ACh and Ergo provocation tests gave positive results in 12 (36%) and 4 patients (24%), respectively. Spasm was not provoked as frequently in the ectatic portion as elsewhere. In addition, spasm was often found at the borders of the ectatic portion in both provocation tests.The incidence of coronary ectasia was higher than that described in previous reports, and coronary spasm was more often observed at the borders between ectatic and normal portions than elsewhere.
Percutaneous transluminal angioplasty of anomalous right coronary artery arising from the ascending thoracic aorta
Authors: Yeoh Joon‐Kuan , Ling Lieng‐Hsi , Maurice Choo 
Published: March 2007

AbstractCoronary arteries with anomalous aortic origin are infrequently encountered in patients undergoing cardiac catheterization and pose potential technical difficulties for performing both diagnostic and angioplasty procedures. Percutaneous transluminal coronary angioplasty (PTCA) of atherosclerotic disease in anomalous right coronary artery (RCA) has been described in only a few reports. In all the cases reported to date, the anomalous vessel arose from the left sinus of Valsalva. We report a case of a technically straight‐forward PTCA performed in an anomalous RCA arising from the anterior aspect of the ascending thoracic aorta. © 1994 Wiley‐Liss,Inc..
Anomalous origin of the right coronary artery from the ascending aorta above the noncoronary sinus of valsalva
Authors: Ilia Reuben , Abu‐Ful Akram , Gueron Mosche 
Published: March 2007

AbstractWe describe a patient with an unusual coronary anatomic variant in which the right coronary artery originates from the ascending aorta above the noncoronary aortic sinus of Valsalva. © 1994 Wiley‐Liss,Inc..