bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of ultrasound energy on thrombi in vitro
Authors: Philippe F. , Drobinski G. , Bucherer C. , Ankri A. , Lacombe C. , Kremer D. , Brisset D. , Montalescot G. 
Published: March 2007

AbstractUltrasonic energy may be used for dissolution of venous or arterial thrombi. However, its effects may depend on the mode of ultrasonic vibration and on the length of the probe. We investigated the in vitro effects of an ultrasonic angioplasty device coupled with a 130 cm‐long flexible titanium probe, with an incorporated automatic optimal frequency of resonance scanning function and continuous mode of emission.Sixteen clots were treated of which eight were whole blood and eight cell‐free. In each of these groups, four were treated in association with streptokinase and four by ultrasound alone. The ages of the clots in these subgroups of four were 1, 3, 7, and 15 days. All thrombi were dissolved in 6 min or less (3′15″ ± 1′35″) at a mean optimal frequency of resonance of 19,444 Hz. Ninety‐six percent of the debris were less than 10 μ. Fewer than 1% of the particulates were larger than 100 μ. These large particulates were observed in disrupted whole blood clots and were almost non‐existent in disrupted cell‐free clots. They were very fragile. Clot dissolution was not speeded by adding streptokinase to ultrasound. Ultrasound did not induce D‐Dimer production, and its effect was most likely to be due to cavitation.Ultrasound energy could represent an advance for thrombotic vascular occlusion therapy, provided that more flexible probes can be devised. © 1993 Wiley‐Liss, Inc.
Quantitative evaluation of left ventricular shape in anterior aneurysm
Authors: Fantini Fabio , Barletta Giuseppe A. , Baroni Maurizio , Fantini Andrea , Maioli Mauro , Sabatier Michel , Rossi Philippe , Dor Vincent , Di Donato M. 
Published: March 2007

AbstractThe purpose of the study was to analyze left ventricular (LV) shape in post‐infarction anterior aneurysm by utilizing quantitative analysis of wall curvature.Forty‐one patients (39 men, 2 women; mean age 56 years) subjected to surgical intervention for LV aneurysm complicating an anterior myocardial infarct were retrospectively evaluated. In all patients the presence of resectable aneurysmal tissue had been confirmed by direct surgical examination. Patients with inferior myocardial infarction and patients who had undergone percutaneous transluminal coronary angioplasty (PTCA) or bypass surgery were excluded. Pre‐intervention ventriculograms (RAO projection) were analyzed. LV wall motion was studied by applying the centerline method. Regional curvature of end‐diastolic and end‐systolic outlines was calculated at 90 equidistant points from aortic corner (point 1) to mitral plane (point 90).Patients with LV anterior aneurysm show a typical pattern of alterations in wall curvature, which is characterized by a shifting of the angiographic apex (the point with the greatest curvature) towards the mitral plane, and by a sharp shift of curvature values at the antero‐basal and infero‐apical regions, marking the borders of the sac. These hinge points closely correspond to the external limits of wall motion abnormalities. Significant correlations were found between degree of regional curvature alterations and severity of global LV dysfunction, as indicated by decrease of ejection fraction and increase of end‐systolic volume.In conclusion, quantitative evaluation of LV shape by means of wall curvature analysis allows recognition of the characteristic morphologic changes of the aneurysm, i.e., wall expansion and deformation. The alterations of regional curvature correlate with the extent of wall motion abnormalities and the severity of global LV dysfunction. © 1993 Wiley‐Liss, Inc.
A prospective, randomized, and double‐blind trial on the effect of fish oil on the incidence of restenosis following ptca
Authors: Franzen Damian , Schannwell Mira , Oette Kurt , Höpp Hans W. 
Published: March 2007

AbstractRestenosis after successful coronary angioplasty (PTCA) occurs in 25–35% of all procedures. To date, most pharmacologic strategies have failed to reduce the restenosis rate significantly. However, recent studies have suggested a potential benefit of dietary supplementation with omega‐3 fatty acids (fish oil) on restenosis following PTCA. The benefit of omega‐3 polyunsaturated fatty acids on the incidence of coronary artery restenosis following elective PTCA was assessed in 212 consecutive patients (41 female, 171 male). Following a successful angioplasty, 204 patients a dietary supplementation with either nine capsules containing fish oil (3.15 g omega‐3 fatty acids) or nine placebo capsules containing olive oil. Treatment was started immediately after PTCA and maintained over 4 mon. Compliance was assessed by analysis of lipid fatty acids prior to angioplasty and at 4 mon follow‐up. The angiographically determined incidence of restenosis (stenosis diameter > 50%) was 31.2% per lesion in patients receiving fish oil and 33.7% in patients receiving olive oil. Gross progression of coronary artery disease in vessels not subjected to angioplasty was 17% and 16%, respectively. In conclusion, low dose fish oil supplementation begun on the day of a successful coronary angioplasty failed to demonstrate any effect on coronary artery restenosis. © 1993 Wiley‐Liss, Inc.
Transcatheter coil occlusion for treatment of left internal mammary‐anterior descending artery steal phenomenon
Authors: Nakhjavan Fred K. , Koolpe Harvey A. , Bruss Jeffrey , Najmi Moosa , Radke Timothy 
Published: March 2007

AbstractA 60‐yr‐old female with previous bypass surgery including LIMA‐LAD graft presented with unstable angina due to steal phenomenon caused by a large pectoral branch of LIMA. Transcatheter coil occlusion of the pectoral branch was successfully performed. This procedure should be considered in similar cases. © 1993 Wiley‐Liss, Inc.
Kissing balloon technique in complex ptca: Single guiding catheter and dual wire rapid exchange system
Authors: Castriz Jorge L. , Canales Mark L. , Reynolds Dwight W. 
Published: March 2007

AbstractThis report is a description, based on four cases, of a variation from previously described approaches for accomplishing the “kissing balloon” technique for complex PTCA. We describe a case in which a single guiding catheter is utilized in combination with two over‐the‐wire monorail type balloon catheters allowing use of standard length (175 cm) guidewires. Various combinations of balloon diameters are described. We believe this approach has significant advantages over other techniques, principally in its rapid and easy usage. © 1993 Wiley‐Liss, Inc.
Subclavian angioplasty: Immediate and late results in 50 patients
Authors: Millaire Alain , Trinca Manuel , Marache Philippe , Groote Pascal De , Jabinet Jean‐Louis , Ducloux Gérard 
Published: March 2007

AbstractIn order to assess the therapeutic outcome of percutaneous transluminal angioplasty for subclavian stenosis, 50 patients were followed up clinically as well as with a velocimetric Doppler after attempted angioplasty. A minimal clinical follow‐up of 9 months was expected. Subclavian stenoses were due to atheroma in 49 patients and to Takayasu's disease in 1 case. Indication of angioplasty was curative in 34 (68%) symptomatic patients (posterior fossa ischemia and/or upper limb ischemia) and preventive in 16 (32%) asymptomatic patients (severe difference of blood pressure between the 2 arms and/or association with carotid stenosis or axillo‐femoral bypass). Angioplasty was successful in 45 patients (primary success rate = 90%). Three (6%) thrombosis occurred due to the percutaneous approach, one of the axillary and one of the brachial artery without any significant sequelae, and one of the aorta requiring an aorto‐bifemoral bypass. A complication occurred in 2 unsuccessful angioplasties (4%): an ischemic stroke occurred in 1 case and a thrombosis of the dilated site requiring a surgical bypass. Clinical follow‐up over a period of 9–101 months (mean = 41) was performed in 43 out of the 45 patients who had undergone angioplasty successfully. Two patients had a follow‐up shorter than 9 months: one died after 5 months, the other was lost to follow‐up. By the end of the clinical follow‐up, 37 (84%) out of the 44 followed‐up patients had benefitted from the procedure. Doppler study performed in 35 out of the 44 followed‐up patients (80%) over a period of 2–90 months (mean = 39) showed 5 restenosis (14%). This study demonstrates the good long‐term results of angioplasty in case of subclavian artery stenosis. Though there are complications, angioplasty could be proposed as a first choice treatment for subclavian stenosis as compared to surgery. Indications in asymptomatic patients should be carefully weighed as complications may occur. © 1993 Wiley‐Liss, Inc.
Left main coronary angioplasty in a 10‐year‐old boy with homozygous familial hypercholesterolemia
Authors: Mehan Vivek K. , Salzmann Christian , Pfammatter Jean‐Pierre , Stocker Franco P. , Meier Bernhard 
Published: March 2007

AbstractHomozygous familial hypercholesterolemia is a rare cause of premature coronary artery disease. A young boy with this disorder who underwent successful coronary angioplasty for left main stem stenosis is presented. © 1993 Wiley‐Liss, Inc.
Percutaneous treatment of post catheterization massive retroperitoneal hemorrhage
Authors: Mak Gary Y. K. , Daly Barry , Chan Wilson , Tse K. K. , Chung H. K. , Woo K. S. 
Published: March 2007

AbstractWe describe a patient on anticoagulant therapy with massive retroperitoneal and intraperitoneal bleeding complicating femoral catheterization. Balloon tamponade of the actively bleeding femoral artery was effective in sealing off the leakage after failed surgical exploration. © 1993 Wiley‐Liss, Inc.
New treatment approach for chronic total occlusions of saphenous vein grafts: Thrombolysis and intravascular stents
Authors: Eagan John T. , Strumpf Robert K. , Heuser Richard R. 
Published: March 2007

AbstractBalloon dilation of saphenous vein graft (SVG) occlusions has a lower success rate than angioplasty of native coronary arteries. To improve this outcome, a new therapy for chronic total SVG occlusions was developed.In three aortocoronary bypass graft patients with class III‐IV angina and chronic occlusion of the SVGs to the left anterior descending artery (age of occlusions: 2–24 wk, age of graft 1–13 yr), standard recanalization was achieved with a guide wire and intracoronary urokinase infusion (0.5–1.0 million unit bolus followed by 100,000 IU/hr for 11–24 hr; mean infusion time: 19.7 hr). In each patient, a residual focal stenosis (average 82.5%) was successfully dilated and stented (single 4.0 mm Pal‐maz‐Schatz in two patients and a 3.5 mm Strecker stent in the other).All patients had complete relief of symptoms and no sequelae. During a mean 7.7 mon follow‐up, 6‐mon arteriographic evaluation in two patients showed minimal intra‐stent narrowing (26% and 34%). In the Strecker stent patient, the device proved too small for the vein graft, leading to an 89% stent stenosis found on follow‐up arteriography at 5 mon. The stent was redilated successfully with a 5% residual narrowing.After urokinase recanalization of chronic total SVG occlusions, intravascular stents may improve the long‐term results seen with conventional SVG angioplasty. © 1993 Wiley‐Liss, Inc.
Management of typical and dysplastic pulmonic stenosis, uncomplicated or associated with complex intracardiac defects, in juveniles and adults: Use of percutaneous balloon pulmonary valvuloplasty with eight‐month hemodynamic follow‐up
Authors: David Shukri W. , Goussous Yousef M. , Harbi Narmeen , Doghmi Faris , Hiari Aktham , Krayyem Mohammed , Ferlinz Jack 
Published: March 2007

AbstractTo alleviate large fixed right ventricular (RV) outflow gradients, percutaneous balloon dilatation of pulmonic stenosis (PS) was performed in 38 patients with mean age of 14 ± 14 years (median: 9 years, age range: 9 months to 63 years). There were 21 males and 17 females. Thirty‐four patients had typical PS (5 of them also having other complex congenital cardiac anomalies, while 13 additional patients had a patent foramen ovale); 2 further subjects had subpulmonic, and 2 dysplastic pulmonary valvular obstructions. Sixteen patients were in the New York Heart Association (NYHA) Class I, 15 in Class II, 6 in Class III, and 1 in Class IV. Electrocardiographic (ECG) evidence of right ventricular hypertrophy (RVH) was present in 29 patients (76%); 3 patients had right bundle branch block (RBBB). For the entire group, there was a marked decrease in the mean systolic transpulmonic gradient in the immediate post‐valvuloplasty period (from 97 ± 43 to 26 ± 17 mmHg; P < 0.0001). One patient expired 8 hours post‐valvuloplasty (he was in the NYHA Class IV, and had severe RV failure). No other cardiovascular complications were encountered; the median hospital stay was 3 days (range: 1–10 days).At an 8‐month follow‐up, 12 patients who were reevaluated invasively had a median transpulmonic gradient of 27 mmHg (range: 5–92 mmHg) as compared to their pre‐valvuloplasty values of 84 mmHg (range: 49‐142 mmHg; P <0.004). Two patients restenosed; 1 required open‐heart surgical valvulotomy with simple shaving, and 1 had successful redilatation with balloon valvuloplasty. Our results indicate that balloon pulmonary valvuloplasty (BPV) is a safe and effective procedure in most patients with PS. Percutaneous BPV should therefore be currently considered to be an excellent alternative form of treatment for most, if not all, subjects with a significant pulmonic valvular obstruction who might otherwise likely become the prime candidates for a severely compromised hemodynamic status if these defects were not expeditiously corrected. © 1993 Wiley‐Liss, Inc.
Double‐lumen catheter assessment of aortic stenosis: Comparison with separate catheter technique
Authors: Jayne John E. , Catherwood Edward , Niles Nathaniel W. , Friedman Bruce J. 
Published: March 2007

AbstractHemodynamic assessment of aortic stenosis in the catheterization laboratory requires accurate determination of the transvalvular gradient. A commercially available doublelumen pigtall catheter can be used to obtain this gradient via a single arterial puncture. The catheter has several advantages over other methods used to measure the gradient in aortic stenosis, but it has not been critically evaluated. In order to assess the performance of this catheter compared to the traditional standard of separate catheters above and across the aortic valve, we studied 10 patients with aortic stenosis using both catheter systems. Aortic valve areas ranged from 0.34 cm2 to 1.1 cm2. Linear regression analysis confirmed excellent correlation between the two methods in measurement of the mean transvalvular gradient (r = 0.98) and calculation of the aortic valve area (r = 0.99) using the Gorlin formula. We conclude that the double‐lumen pigtail catheter provides accurate data in the hemodynamic evaluation of aortic stenosis. © 1993 Wiley‐Liss, Inc.
Coronary angioplasty with gradual versus rapid balloon inflation: Initial results and complications
Authors: Ilia Reuben , Cabin Henry , McConnell Susan , Cleman Michael , Remetz Michael 
Published: March 2007

AbstractAlthough a variety of coronary angioplasty balloon inflation protocols are employed, prior studies have not evaluated the relation of rate of inflation to the type and extent of arterial damage produced by angioplasty. We randomized 103 patients to either a gradual (gradual, incremental increase to peak inflation pressure) or rapid inflation protocol (rapid increase to peak inflation pressure). Fifty‐one patients with 72 lesions underwent gradual and 52 patients with 73 lesions received rapid inflation protocols. There were no significant group differences with regard to age, sex, artery dilated, number of diseased vessels, presence of unstable angina and lesion morphological characteristics except for more lesions located on a bend in the gradual inflation group (p < 0.02). Although there was a tendency towards a higher success rate in patients with gradual inflation, the complete success rates were high in both groups (100% vs. 93%, p < 0.08). The dissection rate was higher in patients with rapid inflation (43/73 [59%] vs. 26/72 [36%], p < 0.01). The collective complication rate was higher in patients with rapid inflation (19% vs. 6%, p < 0.03). No deaths occurred in either group. Thus a gradual compared to rapid coronary angioplasty balloon inflation protocol reduces the frequency of dissection despite similar inflation pressure and balloon/vessel diameter ratio. Gradual inflations may reduce the frequency of procedure‐related complications. © 1993 Wiley‐Liss, Inc.
Coronary angioplasty of anomalous right coronary arteries
Authors: Charney Richard , Spindola‐Franco Hugo , Grose Richard 
Published: March 2007

AbstractWe report 2 cases of successful angioplasty of anomalous right coronary arteries originating above the sinotubular line at the junction of the right and left sinus of Valsalva. The use of Amplatz left guiding catheters provided optimal support for performing angioplasty. © 1993 Wiley‐Liss, Inc.
Coronary angioplasty using an autoperfusion balloon catheter through a 6 french guiding catheter
Authors: Wolff Matthew R. , Prewitt Kerry C. , Brinker Jeffrey A. , Resar Jon R. 
Published: March 2007

AbstractUse of 6 French guiding catheters for elective percutaneous transluminal coronary angioplasty has been limited by lack of a compatible autoperfusion balloon catheter for management of complications such as acute vessel closure and large subintimall dissections. We describe the successful use of a lower profile autoperfusion balloon catheter through large internal lumen 6F guiding catheters for elective coronary angioplasty. These cases demonstrate the feasibility of the use of autoperfusion balloon catheters with 6F guiding catheters in elective, and presumably also in emergent, settings. © 1993 Wiley‐Liss, Inc.
Late outcome and quality of life following percutaneous transluminal coronary angioplasty in octogenarians
Authors: Little Thomas , Milner Mark R. , Lee Kenneth , Constantine Janeen , Pichard Augusto D. , Lindsay Joseph 
Published: March 2007

AbstractLimited data are available concerning the long‐term survival and quality of life of octogenarians treated with percutaneous transluminal coronary angioplasty (PTCA). We retrospectively compared the results of PTCA in 118 octogenarians to that of 500 younger subjects. Among the octogenarians, long term follow‐up was obtained including survival, relief of angina, assessment of quality of life, and capacity for independent living. These results were compared between men and women.The clinical success rate was 93% for the octogenarians and 88% for the younger patients (p = NS). The lesion success rates were 89% and 88% for these groups, respectively. Results of multilesion PTCA and dilatation of coronary occlusions were similar in both age groups. Major complication rates were 5.9% for the elderly and 3.8% for the younger patients (p < 0.008). Hospital mortality was higher among the octogenarians (4.6% vs 0.2%, p < 0.
05). Among long‐term octogenarian survivors, < 90% indicated a high level of satisfaction with their quality of life and health status. If needed, 88% would undergo the procedure again. Independent living was possible for 66% of these patients and automobile driving for 55%.Octogenarian men and women had similar baseline clinical characteristics, procedural success, complications, relief of angina, and survival. Women indicated a slightly lower level of satisfaction and capacity for independent living.PTCA can achieve a success rate in octogenarians comparable to that of younger patients but with an increased risk of serious complications. Patient satisfaction remains high and a majority of octogenarians remain physically active and capable of independent living. © 1993 Wiley‐Liss, Inc.
Coronary angioplasty through 4 french diagnostic catheters
Authors: Mehan Vivek K. , Meier Bernhard , Urban Philip , Verine Vitali , Haine Emmanuel , Dorsaz Pierre‐André 
Published: March 2007

AbstractIn 50 consecutive patients subjected to coronary angioplasty immediately following a 4 French (F) diagnostic study, the technical feasibility and economical aspects of angioplasty through 4F catheters of 54 lesions were assessed. The patients were selected, but multiple, eccentric, and long lesions were not a priori excluded. 4F diagnostic catheters (Cordis), and fixed‐wire dilatation catheters (Ace, Scimed) were used in all cases. The procedure was successful in 43 lesions (80%) using 4F catheters. For 11 stenoses (20%), a change over to a larger French size was required. Two of these lesions could not be crossed with the balloon despite the larger sized guiding catheter. The final overall success rate was 96%, and there were no major complications. The use of diagnostic 4F catheters for angioplasty in these 50 patients resulted in the saving of 39 guiding catheters and 19 introducer sheaths. For 12 lesions (22%), an additional 4F catheter became necessary since the shape used for the diagnostic study was inadequate for angioplasty. In 7 cases, more than 1 balloon was used, but 5 of these balloon exchanges were independent of the use of 4F catheters. Three exchanges were performed through the 4F catheter (1 for need of a larger balloon to improve on an unsatisfactory angiographic result and 2 for a crimped guide wire tip of the Ace balloon). In the remaining 4, a larger catheter was used; in 2 of them, angioplasty eventually failed (failure to cross lesion) and in the remaining 2, a Monorail system solved the problem, which is incompatible with 4F catheters. In these 4 cases, a balloon could have been saved if the procedure had been started with a larger catheter and a movable wire system. We conclude that angioplasty through diagnostic 4F catheters completing a 4F coronary angiography is technically feasible and represents an economically viable alternative in selected patients. © 1993 Wiiey‐Liss, Inc.
Pseudocoarctation of the aorta: A magnetic resonance imaging correlation
Authors: Shah Dipen C. , Sathyamurthy I. , Raje Millind , Ahmed Iqbal 
Published: March 2007

AbstractWe present here the clinical and angiographic features in a patient with pseudocoarctation of the aorta and aortic valvular stenosis. An MRI study performed to delineate the aorta provided valuable correlations and highlighted the potential of this noninvasive modality for the diagnosis of pseudocoarctation of the aorta. © 1993 Wiiey‐Liss, Inc.
Retrieval techniques for managing flexible intracoronary stent misplacement
Authors: Foster‐Smith Karl W. , Garratt Kirk N. , Higano Stuart T. , Holmes David R. 
Published: March 2007

AbstractWith the increasing use of flexible intracoronary stents, the likelihood of complications, including stent misplacement, will tend to rise. We describe the successful use of three commercially available retrieval devices: the nitinol gooseneck snare, the biliary forceps, and the multipurpose basket. We recommend the availability of these devices to operators involved in intracoronary stent placement. © 1993 Wiiey‐Liss, Inc.