bluuebunny/crossref_metadata_2025_split huggingface dataset:
Percutaneous double balloon valvotomy for bioprosthetic tricuspid stenosis
Authors: Block Peter C. , Smalling Ronnie , Owings R. Mark 
Published: March 2007

AbstractWe report two cases of percutaneous balloon valvotomy of porcine tricuspid valves and review the brief literature. Both procedures were successful, but “restenosis” resulted in tricuspid valve replacement in patient 2. The explanted valve showed leaflet thickening and calcified cuspal nodules. Patient 1 is improved 10 months later. © Wiley‐Liss, Inc.
Intravascular ultrasound in the management of acute coronary artery dissection: A case report
Authors: Labinaz M. , Culp S. C. , Kisslo K. B. , Brott B. C. , Phillips H. R. , Stack R. S. 
Published: March 2007

AbstractCrossing total occlusions is frequently difficult. The guidewire may enter a false lumen, thereby preventing successful balloon dilatations. We present a case of an acute arterial dissection following attempted angioplasty of a totally occluded right coronary artery. With an intravascular ultrasound probe in the false lumen, we were able to visualize a second guidewire and direct its passage into the true arterial lumen. This allowed for successful balloon dilatation and stent deployment restoring vessel patency.
Retrograde pulmonary vein wedge angiography: A new technique
Authors: Bahl Vinay K. , Kothari Shyam S. , Kumar Krishna , Wasir Harbans S. 
Published: March 2007

AbstractA new technique of pulmonary vein wedge angiography to delineate pulmonary artery anatomy is described. Conventional pulmonary vein wedge angiography requires an interatrial communication—natural or created by a transseptal puncture. In retrograde pulmonary vein wedge angiography, the left atrium and pulmonary veins are entered from arterial route using a specially designed catheter. This technique can be specially utilized for patients in whom there is no interatrial communication.
Maximal myocardial perfusion by videodensitometry in the assessment of the early and late results of coronary angioplasty: Relationship with coronary artery measurements and left ventricular function at rest
Authors: Vassanelli Corrado , Menegatti Giuliana , Molinari Jonata , Zanotto Gabriele , Zanolla Luisa , Loschiavo Isabella , Zardini Piero 
Published: March 2007

AbstractIn the assessment of the acute results of percutaneous transluminal coronary angioplasty (PTCA), myocardial perfusion at maximal vasodilatation theoretically has fewer limitations than the coronary flow reserve measurements and quantitative coronary angiography. The purpose of this study was to compare the myocardial perfusion to the measurements of the severity of the lesion (minimal luminal diameter and percent area stenosis) and to relate it to the changes of left ventricular function after PTCA. Regional myocardial perfusion was assessed during intracoronary papaverine, using the inverse mean transit time of contrast medium (1/Tmn), before, 15 min after, 18—24 hr after, and 6 months after successful single‐vessel PTCA in 14 patients with stable angina. Left ventricular angiography (before angioplasty, 18—24 hr after, and 6 months later) was analysed by area‐length and centerline methods. Immediately after PTCA, 1/Tmn increased from 0.14 ± 0.07 sec−1 to 0.21 ± 0.09 sec−1 (P = .001). Maximal myocardial perfusion remained higher than the pre‐PTCA value the day after angioplasty (1/Tmn of 0.23 ± 0.09 sec−1), while it reduced to near pre‐PTCA values at follow‐up (1/Tmn of 0.16 ± 0.05 sec−1). Before PTCA, three out of ten patients had ejection fraction of <65%, and seven had mild‐to‐moderate hypokinesis. The day after PTCA the ejection fraction and the regional dysfunction improved significantly. The change in ejection fraction 18—24 hr after PTCA did not correlate with minimal luminal diameter and percent area stenosis and correlated slightly with the improvement of perfusion (r = 0.54, P = .10). At follow‐up left ventricular function deteriorated in the whole group, despite the persistence of angiographic success of PTCA, possibly because of changes in the loading condition. Coronary artery stenosis measurements and 1/Tmn failed to correlate with the left ventricular function. Given the difficulties in routine application of the analysis of time‐density curves, the measurement of minimal luminal diameter remains a more practical assessment of the results of the intervention. However, the improvement of myocardial perfusion may give more information than coronary artery dimensions of the early recovery of left ventricular function.
Balloon catheter retrieval of dislodged coronary artery stents: A novel technique
Authors: Cishek Mary Beth , Laslett Lawrence , Gershony Gary 
Published: March 2007

AbstractPotential complications of intracoronary stenting include stent dislodgement and embolization. We describe a patient in whom a stent was dislodged from a coronary balloon catheter to the iliac artery. A peripheral angioplasty balloon was used to withdraw the stent into the arterial sheath and thereby remove it from the patient.
Simultaneous inflation of tandem (sequential) angioplasty balloons: A means of simultaneously treating multiple lesions in one coronary artery
Authors: Ormiston John A. , Webster Mark W. I. 
Published: March 2007

AbstractWe report a novel approach to dilating multiple lesions in a coronary artery. Through the same guide and over different wires, a 3.5 mm diameter, 20 mm length, and a 3.0 mm diameter, 90 mm length balloon were simultaneously inflated in a right coronary artery. This approach, which simultaneously treats sequential (tandem) lesions of different diameter and length, allows reduction of both the total duration of ischemia and procedural time and may improve early angiographic outcome.
Septic endarteritis following percutaneous transluminal coronary angioplasty
Authors: Kardaras Fotis G. , Kardara Dimitra F. , Rontogiani Dimitra P. , Mpourazanis Ioanis A. , Flessas Leonidas P. 
Published: March 2007

AbstractWe report a case of bacterial arteritis of the external iliac artery complicated by mycotic aneurysm following coronary angioplasty. To our knowledge, this is the first reported instance of arterial wall infection caused by coronary angioplasty at a distance from the insertion site equal to the length of the sheath.
Coronary angiographic morphology of congenital coronary arteriovenous fistulas in adults: Report of four new cases and review of angiograms of fifteen reported cases
Authors: Said Salah A. M. , El Gamal MamdouhI. H. 
Published: March 2007

AbstractThe coronary angiographic features of four new cases of congenital coronary arteriovenous fistulas (CAVFs) are described, and the angiograms of 15 reported cases are reviewed. The morphologic appearance of CAVFs varied from a small discrete single channel to a highly complex plexiform network with a maze of fine vessels. The majority of CAVFs in our series were composed of a single channel. Aneurysmal formation was present in 26% (6/23). Aneurysmal formation involved only the pathway and/or the termination, but never originated from the beginning of the CAVFs. © 1995 Wiley‐Liss, Inc.
A new guidewire for coronary rotational ablation
Authors: Brown Robert I. G. , Penn Ian M. , Viera Fernando M. 
Published: March 2007

AbstractWe report three cases using a new guidewire designed for coronary rotational ablation. The tips are.014 in diameter and available in different degrees of flexibility. The improved torquability of these guidewires may improve the success rate of coronary rotablation in select cases. © 1995 Wiley‐Liss, Inc.
Aspiration of coronary thrombus during angioplasty for postmyocardial infarction ischemia
Authors: Khoury Alexander F. , Donohue Thomas J. , Kern Morton J. 
Published: March 2007

AbstractWe report the use of direct coronary aspiration to remove obstructing thrombus from a proximal right coronary artery after failure of balloon angioplasty to resolve the thrombus responsible for postmyocardial infarction ischemia. © 1995 Wiley‐Liss, Inc.
Bailout Palmaz‐Schatz coronary stenting in 39 patients with occlusive dissection complicating conventional Angioplasty
Authors: Antoniucci David , Santoro Giovanni M. , Bolognese Leonardo , Leoncini Mario , Buonamici Piergiovanni , Fazzini Pier F. 
Published: March 2007

AbstractThe purpose of this study was to evaluate feasibility, safety, and efficacy of bailout Palmaz‐Schatz stenting in a series of 39 patients with coronary dissection associated with acute or unequivocal threatened closure complicating conventional angioplasty. No anatomical characteristics other than reference vessel diameter < 3 mm were considered as contraindications for bailout coronary stenting. Stringent criteria were adopted in defining optimal results (<10% residual stenosis, no angiographic evidence of residual dissection), suboptimal results (>10% residual stenosis or angiographic evidence of residual dissection), deployment failure (failure to deploy the stent because of poor trackability or persistent occlusion despite stent deployment). A total of 49 stents and 7 half‐stents were implanted in 36 patients (range 1–5; mean 1.45 ± 0.84). Successful stenting without in‐hospital death, urgent or semielective coronary surgery, stent thrombosis, or Q‐wave myocardial infarction was achieved in 33/39 patients (85%). A suboptimal result was associated with an increased risk of in‐hospital recurrence of ischemia and other related major adverse events (2/5 patients with suboptimal results vs. 1/31 patients with complete deployment success; P < 0.05). Multiple stents implantation did not carry a significant risk of major cardiac adverse events. The results of this study suggest that bailout Palmaz‐Schatz stenting may be considered a stand‐alone treatment of coronary dissection if an optimal acute angiographic result is achieved. © 1995 Wiley‐Liss, Inc.
Latex versus lodinated contrast media anaphylaxis in the cardiac cath lab
Authors: Myers Gene E. , Crick William F. , King S. William , Mumma Michael , Friedberg H. David , Jamieson Donna M. , Bloom Frederick 
Published: March 2007

AbstractA 65‐year‐old man had bypass surgery 10 years previously with pulmonary artery catheter monitoring. Shortness of breath and mitral regurgitation necessitated repeat left and right heart catheterization using a pulmonary artery catheter. Before any iodinated contrast media exposure, the pulmonary artery catheter was inserted and within 2 min the patient developed anaphylaxis associated ventricular fibrillation. It was discovered that the pulmonary artery catheter used in the cath lab had a latex balloon and that the patient had been exposed to latex 10 years ago. Latex induced anaphylaxis is rarely considered in the differential diagnosis of patients with hypersensitivity reactions in the cath lab, intensive care unit, and operating room. The principal reason for failure to recognize the latex balloon as a potential allergen is that most health professionals are not aware that almost all pulmonary artery catheters contain a latex balloon. The risk of an allergic response to latex is 0.8% for the general population. Others at high risk include those who have had multiple surgical procedures and interventions with repeated latex exposure. Five to 10% of all U.S. health professionals and those performing household duties wearing latex gloves have an allergic response to latex. Latex hypersensitivity is an IgE dependent reaction, while iodinating contrast medium reaction is an IgE independent reaction. If latex hypersensitivity is suggested by pre‐procedural history or if the patient falls into a high‐risk group, pre‐procedural skin testing and/or latex IgE radioallergosorbent (RAST) should be performed. A latex‐free pulmonary artery catheter (Zeon Medical, White Plains, NY) has been evaluated and found to have favorable performance characteristics from the femoral, jugular, and subclavian approach and is an economic equivalent to the conventional pulmonary artery catheters which contain latex. © 1995 Wiley‐Liss, Inc.
Dislocation of the rotating cutter during directional coronary atherectomy: A note of caution
Authors: Bauriedel Gerhard , Schluckebier Sven , Welsch Ulrich , Werdan Karl , Höfling Berthold 
Published: March 2007

AbstractDirectional coronary atherectomy (DCA) has received increased attention, especially as a bail‐out procedure after failed balloon angioplasty. However, this technique may also be burdened by severe pitfalls. We report a patient with a balloon‐resistant left coronary artery lesion subsequently treated with DCA. Despite its over‐the‐wire guidance, as the rotating cutter was advanced, it deviated from its intra‐housing course and intruded into the vascular wall. Dislocation of the rotating blade was due to pressure from hard plaque tissue. After having carefully pulled back the complete catheter system, a severe spasm of the left main stem occurred, which was reversed by intracoronary nitroglycerine. The final angiography showed a left coronary artery without significant, residual stenosis. The case report underscores that DCA passes must be performed under continous fluoroscopic control, especially for balloon‐resistant lesions because of the unpredictability of DCA‐imminent complication. © 1995 Wiley‐Liss, Inc.
Renal artery stenosis presenting as crescendo angina pectoris
Authors: Tami Luis F. , McElderry Michael W. , Al‐Adli Naim M. , Rubin Michael , Condos William R. 
Published: March 2007

AbstractThe coexistence of different clinical syndromes due to atherosclerosis in different organs is not rare and emphasizes the diffuse nature of this vascular process. Although renovascular disease may cause hypertension and/or renal insufficiency, it may also occur in the absence of the usual clinical markers that suggest renovascular hypertension. We report a patient with stable coronary anatomy who presented with crescendo angina pectoris. Diagnosis of renovascular hypertension was made by screening renal angiography at the time of the cardiac catheterization. Renal artery stenting resulted in stabilization of the coronary syndrome and obviated the need for further coronary intervention. To our knowledge, this is the first case of renovascular hypertension precipitating an unstable coronary syndrome in a patient with documented stable coronary anatomy. Review of the literature supports that patients undergoing cardiac catheterization are a high risk population for renovascular disease, particularly in the presence of other predictive factors such as documented coronary artery disease, older age, female gender, congestive heart failure, peripheral vascular disease, renal insufficiency, and smoking. Firm recommendations for routine screening renal angiography in patients undergoing peripheral or coronary angiography will need further studies. © 1995 Wiley‐Liss, Inc.
In‐hospital outcome of percutaneous transluminal coronary angioplasty for long lesions and diffuse coronary artery disease
Authors: Kaul Upendra , Upasani Prashant T. , Agarwal Rajiv , Bahl Vinay K. , Wasir Harbans S. 
Published: March 2007

AbstractWe performed coronary angioplasty on 151 long or diffuse lesions (120 long and 31 diffuse) in 141 patients (86% male, mean age 50 ± 9 years). Long lesions were defined as lesions 11‐20 mm in length and diffuse lesions as lesions longer than 20 mm, or three or more lesions in the same vessel. One or more adverse morphologic features were present in 131 (93%) lesions. Long balloons were used in 44%, significantly more often for diffuse disease (long lesions 39% and diffuse disease 64%; P = 0.004). Newer devices including the rotational atherectomy device (9 lesions), stents and perfusion balloons were employed in 18 (12%) lesions, more often for diffuse lesions (long lesions 8% vs. diffuse lesions 26%; P = 0.017). Lesion severity was comparable in the two groups (long lesions: 88 ± 7%; diffuse lesions: 88 ± 8%), but diffuse lesions were associated with significantly higher residual stenosis (long lesions: 6 ± 8%; diffuse lesions: 12 ± 13%, P = 0.01). Major complications occurred in five (3.5%) patients, including one death (0.7% mortality). The angiographic and clinical success rates for all patients were 99% and 96%, respectively, and were comparable for long and diffuse lesions.Judicious case selection and the use of long balloons and newer interventional devices permit coronary angioplasty for long lesions and diffuse disease with excellent success and a low risk of complications. Diffuse lesions are associated with more frequent use of long balloons and newer devices, especially rotational atherectomy and slightly higher residual stenosis as compared to long lesions. © 1995 Wiley‐Liss, Inc.
Combined dissection of the right coronary artery and right coronary cusp during coronary angiography
Authors: Kwan Tak , Elsakr Ashraf , Feit Alan , Reddy C. V. R. , Stein Richard A. 
Published: March 2007

AbstractDissection of coronary arteries during diagnostic coronary angiography is infrequent; dissection of the coronary cusp is extremely rare. The combination of coronary artery and coronary cusp dissection has not been reported previously. A case of right coronary artery dissection and right coronary cusp dissection during diagnostic coronary angiography is described. © 1995 Wiley‐Liss, Inc.
Left ventriculography complicated by cerebral air embolism
Authors: Goldenberg Iian , Shupak Avi , Shoshani Oren , Boulos Monther 
Published: March 2007

AbstractCerebral air embolism is a severe complication of various invasive medical procedures. Hyperbaric oxygen is the sole definitive therapy. We describe a 68‐year‐old patient who presented with upper left limb motor and sensory deficits following the injection of a contrast medium for left ventriculography. Numerous air bubbles were seen on cineangiography concomitantly with injection of the contrast medium. Immediate compression with hyperbaric oxygen resulted in complete resolution of all neurological symptoms. latrogenic cerebral air embolism is an underdiagnosed condition that may result from cardiac catheterization. Physician awareness will improve prevention, and prompt diagnosis and the use of hyperbaric oxygen will result in an optimal outcome if it does occur. © 1995 Wiley‐Liss, Inc.
Coronary angioplasty of bifurcational lesions with the protecting branch technique using 6 French guiding catheter
Authors: Metz Damien , Nazeyrollas Pierre , Maillier Bruno , Maes Damien , Blaise Claude , Deschildre Alain , Elaerts Jacques 
Published: March 2007

AbstractThe use of 6 French guiding catheters is still usually limited to elective percutaneous transluminal coronary angioplasty. We describe our preliminary experience with this guiding size to perform a double guide wire procedure for angioplasty of coronary bifurcation lesions, to protect (n = 5) and/or to sequentialy dilate (n = 9) a major side branch. Technical success was 12/14 (86%), angiographic success 13/14 (93%), and in‐hospital outcome was event free in all patients. Thus, 6 French guiding size is both safe and effective for the majority of coronary bifurcation angioplasty.
Transluminal extraction catheter atherectomy in long saphenous vein grafts
Authors: Blankenship Jomes C. , Narke Joseph A. , Roberts James W. 
Published: March 2007

AbstractLesions in distal coronary vasculature present unique problems for catheter‐based interventions. We report two cases of attempted transluminal extraction catheter (TEC) atherectomy for very distal lesions in long circular saphenous vein grafts. One case succeeded with a simple modification of the TEC device; another failed because of excessive tortuosity in the proximal graft. This experience helps define the potential and limitations of TEC. © 1995 Wiley‐Liss. Inc.
Influence of expanded balloon diameter on palmaz‐schatz stent recoil
Authors: Rechavia Eldad , Litvack Frank , Macko Gail , Eigler Neal L. 
Published: March 2007

AbstractAfter successful stent implantation, the residual luminal diameter of the stented vessel is usually smaller than the maximal stent‐expanded balloon diameter. The goal of this study was to determine whether immediate vessel diameter recoil after Palmaz‐Schatz stenting is affected by the final expanding balloon diameter used during stent deployment.Single Palmaz‐Schatz balloon expandable stents were successfully placed in 108 stenotic lesions. There were 68 patients with 75 saphenous vein graft (SVG) and 30 patients with 33 native coronary artery lesions, including 26 restenotic and 82 de novo occlusive (>50% diameter stenosis) lesions. Quantitative coronary angiography was used for the assessment of stent recoil, defined as the difference between the minimal diameter of the fully expanded balloon and the postprocedure minimal lumen diameter divided by minimal diameter of the fully expanded balloon.A strong correlation (r = 0.94) was found between the minimal diameter of the fully expanded balloon and poststenting minimal lumen diameter. Immediate recoil was 11.3 ± 7.5%, responsible on an average for 0.4 ± 0.2‐mm acute lumen loss. Recoil was less in SVG than in coronary arteries (9.7 ± 6.6% vs. 14.0 ± 7.8%; P = 0.004, and 0.3 ± 0.2 vs. 0.4 ± 0.2 mm; p = 0.01). Lesions were divided into four subgroups, based on the final stent expanding balloon diameter: (1) ⩽3.0 mm (n = 33); (2) >3 ± 3.5 mm (n = 43); (3) >3.5 ± 4 mm (n = 23); and (4) >4 mm (n = 9). For the four subgroups, the percentage recoil values were 15.0 ± 5.7, 10.4 ± 8.2, 9.0 ± 5.4, and 4.7 ± 2.0, respectively (P <0.001). Mean values of diameter stenosis, lesion length, maximal balloon pressure, balloon‐to‐artery ratio, relative vessel stretch, and absolute recoil were not statistically different.Immediate vascular recoil in single implanted Palmaz‐Schatz stent is a function of the final expanding balloon diameter, with recoil larger at small‐balloon diameters and almost eliminated at large inflation diameters. This finding could contribute to less acute gain, increased restenosis, and higher stent thrombosis rates after stenting vessels of <3‐mm diameter. © 1995 Wiley‐Liss, Inc.