bluuebunny/crossref_metadata_2025_split huggingface dataset:
Angioplasty in ulcerative coronary artery disease: Acute results and early follow‐up
Authors: Brack Martin , Mooney Jodi Fishman , Huber Michael S. , Pedersen Wes R. , Van Tassel Robert A. , Mooney Michael R. 
Published: March 2007

AbstractThe safety and efficacy of percutaneous transluminal coronary angioplasty (PTCA) for stenoses involving ulcerative lesions were retrospectively studied. Seventy‐seven patients (62 men and 15 women, mean age 62 ± 10 years) representing 3.4% of 2,250 patients treated with PTCA during the period January 1, 1988 and June 30, 1990, had pre‐PTCA stenoses defined as ulcerated. Twenty‐eight (36%) of the stenoses were localized in the left anterior descending coronary artery, 9 (12%) in the left circumflex and 40 (52%) in the right coronary artery. During angioplasty, percent diameter stenosis was reduced from 73 ± 14% to 22 ± 13% and transstenotic gradient decreased from 48 ± 18 to 12 ± 6 mm Hg. Clinical success (freedom from angina at discharge without coronary bypass surgery, infarction or death) was achieved in 70 patients (90.9%). There were seven unsuccessful cases: three underwent elective coronary bypass surgery, one was managed medically, and three developed a major flow interrupting dissection during the procedure requiring emergency coronary bypass surgery. There were no deaths. At mean follow‐up of 7.6 months, 45 of 61 patients (73.7%) remained asymptomatic. One patient needed an elective coronary bypass surgery and five patients had a successful repeat PTCA. In conclusion, PTCA for an ulcerated stenosis can be performed safely with a high primary success rate and a favorable early clinical course.
Double wire technique for additional guiding catheter support in anomalous left circumflex coronary artery angioplasty
Authors: Das Gladwin S. , Wysham Douglas G. 
Published: March 2007

AbstractThis case report presents an example of the use of the double wire technique for additional guiding catheter bracing support in percutaneous transluminal coronary angioplasty (PTCA) of a stenosis in an anomalous circumflex (CX) artery arising within the ostium of the right coronary artery (RCA). It illustrates the ease of this technique in comparison to conventional guiding catheter cannulation, which may be more difficult and yield poor backup support in this unusual anatomic situation.
Prognosis of culprit lesion PTCA in acute myocardial infarction for multi versus single vessel disease
Authors: Vacek James L. , Rosamond Thomas L. , Robuck Wayne , Kramer Paul H. , Beauchamp Gary D. 
Published: March 2007

AbstractWe studied 417 patients undergoing single vessel culprit lesion percutaneous transluminal coronary angioplasty (PTCA) for acute myocardial infarction to determine the impact of disease in other vessels. Group A (189 patients, 45%) had coronary artery disease (>70% stenosis) in at least 1 additional vessel while Group B (228 patients, 55%) did not. The groups were similar in sex distribution (A = 75% male, B = 76%), number of lesions in the single culprit vessel dilated (1 lesion in 83% A, 80% B), and PTCA success (A = 92%, B = 94%) (all p = NS). Group A patients were older (63 ± 10 vs. 56 ± 11 years) and had more prior myocardial infarctions (27% vs. 7%), and more prior coronary artery bypass grafting (15% vs. 0.4%) (all p < .01). Group A patients were more likely to have repeat catheterization (48% vs. 32%, p < .005) although restenosis of the infarct‐related vessel was similar (A = 24%, B = 16%) (p = NS). Group A was more likely to need angioplasty in a 2nd vessel (23% vs. 8%) and to need coronary artery bypass grafting (20% vs. 8%) (both p < .001). Cumulative mortality was higher in Group A at 1 month (10% vs. 5%), 1 year (11% vs. 6%), and long‐term (13% vs. 7%). This difference appeared to be due to the impact of lower mean ejection fraction in Group A.Conclusion: Treatment of acute myocardial infarction by direct PTCA of the culprit lesion can be performed with a high likelihood of success in patients with or without multivessel coronary artery disease. Patients with multivessel disease are identified as a high risk group for whom subsequent interventional therapy may be required after the acute event. Mortality, however, is affected more by left ventricular function than by the presence of multivessel disease.
Elevated left atrial pressure does not cause left‐to‐right shunting after mitral balloon valvuloplasty
Authors: Watson K. R. , Chisholm R. J. , Azpiri J. R. , Armstrong P. W. 
Published: March 2007

AbstractTo assess the hemodynamic factors affecting left‐to‐right shunting following balloon mitral valvuloplasty we studied 10 patients at 3 points during the procedure: pre‐septal dilation, post‐septal dilation pre‐valvuloplasty, and post‐valvuloplasty. Hemodynamic parameters were recorded and an oximetry run was obtained at each stage.Mitral valvuloplasty was successful in 8 and unsuccessful in 2 patients. No patient had a significant oxygen step‐up at any stage, including the 2 patients with unsuccessful valvuloplasty. Significant left‐to‐right shunting through the atrial septal puncture in mitral valvuloplasty is infrequent, even before successful balloon valvuloplasty when left atrial pressure is maximally elevated.
Urokinase infusion of chronically occluded femoropopliteal gortex™ bypass grafts via the popliteal approach
Authors: Dorros Gerald , Hall Patrick , Iyer Sriram S. 
Published: March 2007

AbstractThrombolysis of two occluded above‐knee femoropopliteal Cortex™ bypass grafts utilizing the popliteal approach for catheter placement was successfully performed without complication. In both cases, the proximal anastomoses of the graft could not be identified. A percutaneous popliteal approach was used for catheter placement and delivery of urokinase. Angioplasty was performed on the unveiled stenoses that, presumptively, led to graft closure. Selective thrombolysis via catheter placed from popliteal approach is a new technique for recanalizatlon of occluded femoropopliteal bypass grafts and warrants further investigation.
Comparison of the hydrophilic guidewire in double‐ and single‐wall entry needles: Potential hazards
Authors: Reagan Kathleen , Matsumoto Alan H. , Teitelbaum George P. 
Published: March 2007

AbstractUsing an in vitro model, the potential hazard of using a new plastic‐coated guidewire directly through both beveled, single‐wall and nonbeveled, double‐wall arterial puncture needles was assessed. Guidewire withdrawal directly through both types of needles resulted in either scraping and/or shearing of the plastic coating of the guidewire, leading to potential embolic debris. This problem was more significant when the guidewire was withdrawn through the beveled needle, in comparison to the nonbeveled type.Extreme caution should be used when using plastic‐coated guidewires directly through metallic arterial entry needles.
Transseptal left heart catheterization: Usefulness of the intracavitary electrocardiogram in the localization of the fossa ovalis
Authors: Bidoggia Hector , Maciel Juan P. , Alvarez Jose A. 
Published: March 2007

AbstractOne of the major difficulties in left heart Catheterization through the interatrial septum is to ensure that the Brockenbrough needle tip is correctly laid on the fossa ovalis floor (FOF), which is the only area where the puncture must be done. The difficulties may be enhanced in patients with atrial enlargement and subsequent distortion of the anatomical structures.In order to reduce the hazards of the septal puncture, an electrocardiographic mapping of the right atrial endocardium was performed using the Brockenbrough needle as an exploratory electrode in a group of 20 patients. When the tip of the needle was laid against the FOF, the endoatrial electrocardiogram (EAE) registered a slight or no injury curve, even when the pressure was tight enough to perforate the septum. On the contrary, the pressure on any other area of the muscular septum or atrial walls elicited a bizarre monophasic injury curve.The peculiar electrocardiographic response of the FOF to the pressure exerted by the Brockenbrough needle tip was a valuable aid to identify the area where the transseptal puncture must be done. In addition, the sudden changes in the P wave morphology immediately after the septal perforation, provided the first clue that the left atrium has been reached.
Pneumococcal pericarditis successfully treated with catheter drainage and intravenous antibiotics
Authors: Kocheril Abraham G. , Luttmann Christopher , Sadaniantz Ara 
Published: March 2007

AbstractBacterial pericarditis is commonly a disease of children for which the primary treatment is surgical drainage. We report the case of a 19‐yr‐old patient presenting with pneumococcal pericarditis and tamponade treated successfully with intrapericardial catheter drainage and intravenous antibiotics. The technical aspects are discussed.
Balloon angioplasty of chronic total coronary artery occlusions: What does it cost in radiation exposure, time, and materials?
Authors: Bell Malcolm R. , Berger Peter B. , Menke Kristina K. , Holmes David R. 
Published: March 2007

AbstractCoronary angioplasty of chronic total occlusions is known to have a lower success rate and higher frequency of restenosis than angioplasty of subtotal stenoses, but there are no data describing the additional time, resources, and radiation exposure associated with this procedure. The purpose of this study was to compare these features in 90 consecutive patients who underwent angioplasty of a total occlusion (group 1) to those of 100 consecutive patients who underwent angioplasty of a subtotal stenosis (group 2). Angioplasty was successful in 60% of group 1 and in 94% of group 2 patients. Procedures were longer in group 1 and significantly more guide catheters, angioplasty balloon catheters, and guide wires were required per patient compared to group 2. The volume of contrast media used in each group was similar. Estimates of radiation entry exposure, calculated from fluoroscopy exposure times and using data from phantom studies, were 53 R (roentgen) per patient in group 1 vs. 34 R in group 2. These procedures were performed using pulsed progressive fluoroscopy; radiation exposure would be considerably higher using conventional fluoroscopic systems. Cineangiographic radiation exposures were similar for each group and accounted for an average additional exposure of 14–22 R for each procedure. Total radiation exposure was reduced in both groups when the angioplasty procedure was combined with the diagnostic angiogram. These observations should be considered when dilation of a total occlusion is planned. Efforts to reduce the amount of radiation exposure should remain a priority in interventional catheterization laboratories.
Balloon pulmonary valvuloplasty in the management of cyanotic congenital heart defects
Authors: Rao P. Syamasundar , Wilson Allen D. , Thapar Mohinder K. , Brais Maurice 
Published: March 2007

AbstractTwenty‐three children with cyanotic congenital heart defects, aged 3 days to 11.5 years, weighing 2.9 to 30 kg, underwent percutaneous balloon pulmonary valvuloplasty to improve pulmonary oligemia. The patients were divided into two groups: group I with intact ventricular septum and group II with ventricular septal defect. In 12 group I patients, there was an increase of systemic arterial oxygen saturation [83 ± 8% (mean ± SD) vs. 94 ± 5%, P < 0.001] and pulmonary‐to‐systemic flow ratio (0.7 ± 0.1 vs. 1.0 ± 0.2, P < 0.001). Peak systolic pressure gradient across the pulmonary valve decreased (P > 0.001) from 105 ± 48 to 25 ± 18 mm Hg. In 11 group II patients, arterial oxygen saturation (67 ± 13 vs. 83 ± 13%, P < 0.01) and pulmonary‐to‐systemic flow ratio (0.7 ± 0.4 vs. 1.2 ± 0.5, P < 0.02) increased following valvuloplasty. Peak systolic pressure gradient across the pul‐monic valve (52 ± 16 vs. 32 ± 22 mm Hg, P < 0.05) decreased while infundibular and total pulmonary outflow tract gradients were unchanged (P > 0.1). Immediate surgical intervention was avoided in all cases in both groups. On follow‐up, 1 to 36 months after valvuloplasty, arterial oxygen saturation, pulmonary‐to‐systemic flow ratio, and pulmonary valve gradients remain improved in both groups. However, in group I, repeat balloon valvuloplasty was required in two children. In group II, six children with tetralogy of Fallot (TOF) underwent successful total surgical correction 4 months to 2 years after valvuloplasty. Two children with transposition of the great arteries required Blalock‐Taussig shunts 6 and 18 months after valvuloplasty for further improvement of hypoxemia. Demonstrable increase in pulmonary artery diameter occurred in several children. These data suggest that pulmonary valvuloplasty offers an excellent relief of pulmonary valve obstruction in the intact ventricular septum group and palliation of pulmonary oligemia in the ventricular septal defect group. In the latter group, avoiding immediate surgical shunts in all patients and achieving growth in pulmonary arterial size in many patients, thus making them suitable for further surgical palliation or correction, are additional advantages.
Right internal mammary artery graft angioplasty through a right brachial artery approach using a new custom guide catheter: A case report
Authors: Brown Robert I. G. , Galligan Luke , Penn Ian M. , Weinstein Larry 
Published: March 2007

AbstractAngioplasty of right internal mammary artery grafts may present problems because of the variable origin of the mammary artery and its angulation from the subclavian artery. We report a case of successful angioplasty using a custom designed guide catheter, after failed attempts using conventional guide catheters.
Arteriographic demonstration of both kinking at the origin and compression between the great vessels of an anomalous right coronary artery arising in common with a left coronary artery from above the left sinus of valsalva
Authors: Grollman Julius H. , Mao Song Shou , Weinstein Steven R. 
Published: March 2007

AbstractAngled angiographic views demonstrated two areas of significant systolic narrowing in an anomalous right coronary artery arising in common with a left coronary artery from above the left sinus of Valsalva: (1) an ostial stenosis due to kinking as the anomalous artery turned sharply to the right after its origin from the aorta; (2) compression of the proximal segment as it coursed between the aorta and pulmonary artery. Appropriate angiographic studies to evaluate the presence of these changes may help to elucidate their significance.
Intramyocardial hemorrhage due to prolonged intracoronary infusion of urokinase into a totally occluded saphenous vein bypass graft
Authors: Bedotto John B. , Rutherford Barry D. , Hartzler Geoffrey O. 
Published: March 2007

AbstractA 0.038 inch perfusion wire was used to selectively administer a 24‐hr infusion of urokinase into the occluded saphenous vein bypass graft of a 69‐yr‐old woman. Immediately following subsequent reperfusion by balloon angioplasty, she developed a hemorrhagic myocardial infarction.
Tampa bay catheter: A new guiding catheter for endomyocardial biopsy via femoral approach
Authors: Canedo Mario I. 
Published: March 2007

AbstractInitially, endomyocardial biopsies were obtained almost exclusively using the jugular vein approach. Lately, the femoral vein route has gained popularity and in many centers, including ours, it is preferred. Despite this, guiding catheters specifically designed for endomyocardial biopsy via femoral vein approach are not available. Here, the experience with the Tampa Bay catheter, designed for endomyocardial biopsy using the femoral vein is described.From 1–1‐89 to 1–31‐90, a total of 486 endomyocardial biopsies were performed in 78 post‐heart transplant patients (1–17, mean 6 per patient); 106 were performed via internal jugular vein (22%) and 380 (78%) via femoral vein. Of these, 100 were performed using the Tampa Bay catheter. The remaining 280 biopsies were done using a long sheath or a Judkin's right coronary angioplasty guiding catheter.Biopsy specimens were adequate for diagnosis of rejection in all 106 biopsies performed via internal jugular vein (100%) in 99 of 100 biopsies via femoral vein using the Tampa Bay catheter (99%) and in 274 of the 280 (98%) biopsies using the long sheath or the right Judkin's coronary angioplasty guiding catheter (NS).The femoral vein is larger and easier to find than the internal jugular vein. More important, complications such as right pneu‐mothorax, Horner's syndrome, recurrent laryngeal nerve paralysis, and right phrenic nerve paralysis, known to occur when the internal jugular vein approach is used, can be completely avoided when the femoral vein approach is used.
Percutaneous transluminal coronary angioplasty in a patient with paroxysmal nocturnal hemoglobinuria
Authors: Fong Ping‐Ching , Tai Yau‐Ting , Lau Chu‐Pak , Li John , Yap Florence Hiu‐Yee , Liang Raymond , Lie Albert Kwok‐Wai 
Published: March 2007

AbstractParoxysmal nocturnal hemoglobinuria (PNH) is an acquired chronic hemolytic anemia associated with an unusual susceptibility to hemolytic crisis, infection, and venous thrombosis which would be aggravated by a number of factors including surgery. We report a case of PNH undergoing percutaneous transluminal coronary angioplasty and discuss the corresponding perioperative management.
Separate origin of a large septal perforator branch
Authors: Van Den Brandhof Gijsbert , Zijlstra Felix 
Published: March 2007

AbstractA patient with an inferior myocardial infarction was successfully treated with thrombolytic therapy. At selective coronary arteriography a large septal perforator branch originating from the right coronary sinus anastomosing to the proximal left anterior descending coronary artery was seen. As far as we know, this has never been described before.
Lesion protection during fixed‐wire balloon angioplasty: Use of the “buddy wire” technique and access catheters
Authors: Selig Michael B. 
Published: March 2007

AbstractFixed‐wire (FW) coronary angioplasty procedures have gained widespread acceptance in some institutions as a primary choice for all angioplasty procedures. These single‐lumen, low‐profile devices provide distinct advantages as compared to over‐the‐wire systems in certain circumstances. However, they have not allowed for lesion protection or guidewire access if the situation arises. Two techniques are available to provide lesion protection during FW coronary angioplasty. They are the buddy wire technique and the use of subselective intracoronary access catheters. Access catheters can be used as primary, pre‐loaded devices or as secondary devices to be used over an extended FW balloon catheter. These techniques can widen the applications of FW balloon angioplasty.
Ultrasound guided ablation of pseudoaneurysm following coronary artery stent placement: A preliminary report
Authors: Resar Jon R. , Trerotola Scott O. , Osterman Floyd A. , Aversano Thomas R. , Brinker Jeffrey A. 
Published: March 2007

AbstractA femoral artery pseudoaneurysm in a 47 year old woman following coronary artery stent placement was treated with color‐flow duplex ultrasound guided compression. This technique may be useful following stent placement because of the requirement for continued anticoagulation post‐procedure. © 1992 Wiley‐Liss, Inc.
Coronary angioplasty of bifurcational lesions without protection of large side branches
Authors: Ciampricotti Renzo , El Gamal Mamdouh , van Gelder Berry , Bonnier Johannes , Taverne Rob 
Published: March 2007

AbstractTo assess the risk and clinical relevance of side branch (SB) occlusion during angioplasty (PTCA) we attempted PTCA of major branches (MB) without protection of lesion‐associated large (≥‐1.8 mm) SBs in 67 patients (50 men). There were 32 patients with unstable angina and 35 with stable angina. Their mean age was 55 years (range 31–77). There were 69 SBs: 43 with severe ostium stenosis (type A); 6 with severe non ostial stenosis (type B); and 20 with no or slight nonostial stenosis (type C). PTCA of the MB was successful in all but one patient who underwent acute bypass surgery. After MB PTCA occlusion occurred in 10 SBs (7A, 1B, 2C) and was asymptomatic in 5. Recanalization and dilatation was successful in 4 out of 5 symptomatic SB occlusions. A single patient developed a non‐q wave myocardial infarction. PTCA was also attempted in 21 diseased SBs and failed in one. 21 SBs remained severely stenotic and 6 occluded. During follow‐up symptomatic MB restenosis occurred in 12 patients, associated with restenosis in 4 out of 6 dilated SBs. Four patients underwent bypass surgery and 8 repeat successful PTCA. The SB was redilated in 2 cases and occluded silently in one. Angiography in 16 asymptomatic patients showed moderate MB restenosis in 3 and SB occlusion in 2. At 2.2 years follow‐up 60 (89%) patients were asymptomatic with a normal exercise test and/or maintained angiographic result. Angioplasty of bifurcational lesions without SB protection can be effectively performed with a low rate of complications and a favourable long‐term outcome. The clinical importance of dilating large SBs seems limited.
Collagen application for sealing of arterial puncture sites in comparison to pressure dressing: A randomized trial
Authors: Schräder Rainer , Steinbacher Stefanie , Burger Wolfram , Kadel Christoph , Vallbracht Christian , Kaltenbach Martin 
Published: March 2007

AbstractOne hundred patients undergoing routine diagnostic or interventional catheterization were randomly assigned to receive either percutaneously applied collagen (group A; n = 50) or conventional pressure dressing (group B; n = 50) for sealing of the femoral artery. Clinical variables were comparable in both groups. The heparin dose was 100 IU/kg in 30 patients and 200 IU/kg in 20 patients of either group. The average compression time was 4.3 min in group A and 42.3 min in group B (p < .001). Bleeding was not observed in group A but was observed in 6/50 patients in group B. The time to ambulation was 6.4 hr (range, 4–12 hr) in group A and 21.6 hr (range, 10–48 hr) in group B (p < .001). Hematomas with a diameter of >6 cm developed in 4/50 patients in group A and in 11/50 patients in group B (p < .05). Blood‐transfusions or surgical interventions were not required and there was no loss of ankle pulses in either group.In conclusion, percutaneously applied collagen reduced compression time and duration of bedrest after diagnostic catheterization and PTCA. Despite earlier ambulation, the incidence of bleeding was lower with collagen than with conventional pressure dressing.
Triple balloon‐on‐a‐wire or “méanage á trois” coronary angioplasty
Authors: Lindsey Richard L. , Saporito Justin , Kleist Paul C. , Kalash Yaser 
Published: March 2007

AbstractWe describe the triple balloon or “méanage á trois” technique of coronary angioplasty which has potential application for dilating trifurcation or closely approximated bifurcation lesions. © 1993 Wiley‐Liss, Inc.
Retrieval of a lost coronary stent from the descending aorta using a ptca balloon and biopsy forceps
Authors: Berder VÉRonique , Bedossa Marc , Gras Daniel , Paillard Francois , Breton Herve Le , Pony Jean C. 
Published: March 2007

AbstractWe report a case of unsuccessful stenting of a right coronary artery after acute dissection during percutaneous transluminal coronary angioplasty (PTCA). The stent was lost in the descending aorta and we used an original technique to remove it from the arterial bed by using both a very low profile balloon and a 6F bioptome. © 1993 Wiley‐Liss, Inc.