bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cortical blindness after coronary angiography: A rare but reversible complication
Authors: Kinn Robert M. , Breisblatt Warren M. 
Published: March 2007

AbstractTransient cortical blindness is a recognized complication after vertebral and cerebral angiography but is a rare event after cardiac angiography. The development of cortical blindness appears to be an adverse reaction to the contrast agent which results in an osmotic disruption of the blood‐brain barrier which appears to be selective for the occipital cortex. Patient outcome appears to be generally favorable with return of vision within 24–48 hr. This study describes three patients who had transient cortical blindness after cardiac catheterization and reviews what is known about this unusual problem.
Fatty infiltration: Another restrictive cardiomyopathic pattern
Authors: Dervan John P. , Ilercil Arzu , Kane Philip B. , Anagnostopoulos Constantine 
Published: March 2007

AbstractRestrictive cardiomyopathies have been shown to occur as result of infiltrative processes from a variety of sources. The current report describes an obese male, who was found to have hemodynamic evidence of a restrictive cardiac process. His pericardium was proven to be normal and an incisional biopsy obtained of the myocardium during coronary artery bypass surgery demonstrated histologic evidence of fatty infiltration of myocardium. Review of the restrictive and pathology literature is discussed and indicates that this is the first report to demonstrate the association between fatty infiltration and hemodynamic findings consistent with a restrictive cardiomyopathy.
Origin of the left main coronary artery from the “non‐coronary” sinus of valsalva
Authors: Cohen David J. , Kim Ducksoo , Baim Donald S. 
Published: March 2007

AbstractA case is described in which the left main coronary artery arises from the posterior sinus of Valsalva in an otherwise normal heart. This coronary anomaly did not result in any functional obstruction or myocardial ischemia but represents only the third such anomaly described in the English language literature.
Transseptal catheterization in adults: Enhanced efficacy and safety by low‐volume operators using a “non‐standard” technique
Authors: Doorey Andrew J. , Goldenberg Edward M. 
Published: March 2007

AbstractTransseptal catheterization is often not performed because of concerns about morbidity and mortality. The authors present several refinements of this technique that have allowed a series of cases to be done with minimal morbidity or mortality. This was possible despite limited previous experience in this technique and a relatively low‐volume of cases.
Influence of radiographic contrast media viscosity to flow through coronary angiographic catheters
Authors: Roth Robert , Akin Mustafa , Deligonul Ubeydullah , Kern Morton J. 
Published: March 2007

AbstractTo assess the influence of viscosity on flow resistance, 4 clinically available contrast media were injected through 12 angiographic catheters of varying dimensions at 20° and 37°C. Seven cc of contrast was injected at a pressure of 200 PSI at 3cc/sec by Medrad Mark IV power injector. The pressure of injection through the manifold was recorded with an electronic pressure transducer.The lowest injection pressure at 37°C occurred with Hexabrix®. Differences in contrast media viscosity were apparent with catheters <6 French diameter. There were minimal differences in injection pressures with regard to the coronary curve tip configurations for any of the contrast agents. At 20°C, Isovue® had lower injection pressures than the other contrast agents. Injection through 5 French catheters demonstrated a >1.5 atmosphere difference, especially between Omnipaque® and Hexabrix®. The difference in contrast media injection pressure was >2 atmospheres between 8 Frenchguidingand 8 Frenchdiagnosticcatheters and between 5 French and 6 French diagnostic catheters and <2 atmospheres between 8 French and 6 French diagnostic catheters. Injection pressure differences >1 atmosphere were not observed for catheters of the same French size at body or room temperature contrast injection.These data indicate that important temperature related viscosity differences between agents are present and confirm that the largest differences in contrast media are most apparent for the smallest diameter catheters. Given equivalent image opacification and hemodynamic and adverse effects, selection of a low viscosity contrast media theoretically provides an advantage during procedures using small diameter catheters or interventional procedures requiring contrast media visualization through reduced channels.
Heart catheterization in a neonate by interacting magnetic fields: A new and simple method of catheter guidance
Authors: Ram Wolfgang , Meyer Hans 
Published: March 2007

AbstractCatheter guidance in a critically ill neonate can be difficult and hazardous. A new technique of directing a catheter based on the interaction of magnetic fields is described. A strong external permanent magnet is moved across the body surface to control the magnetic tip of a catheter in the body. We report on the first clinical case of such a heart catheterization in a neonate with complex congenital heart disease. This method can also be used for other invasive investigations in the neonatal period.
Guiding catheter‐assisted renal artery angioplasty
Authors: White Christopher J. , Ramee Stephen R. , Collins Tyrone J. , Dearing Brian , Rees Andrew P. , Granke Kenneth , Hollier Larry H. 
Published: March 2007

AbstractA guiding catheter was used in seven patients who underwent balloon dilation of nine renal arteries. The advantages of using a guiding catheter for renal angioplasty are analogous to the benefits obtained with a coronary angioplasty guiding catheter used in coronary angioplasty. The guiding catheter provides back‐up support to cross lesions and allows selective contrast visualization of the lesion before, during, and after dilation. It is also possible, when using a guiding catheter, to measure pressure gradients across lesions without having to recross the lesion which may help to ensure that adequate dilation of the stenosis has been accomplished.
Crossing failure in PTCA: Mind the deflated balloon profile!
Authors: Hoorntje Jan C. A. , De Boer Menko Jan , Zijlstra Felix 
Published: March 2007

AbstractAn attempt to reposition an Integra™ PTCA balloon‐on‐a‐wire failed although the whole stenosed segment could be crossed before inflation. After careful removal the device showed a grossly altered shape. Deflated balloon profiles, quite different from the initial shape, can determine the outcome both in dissections and in multilesion cases.
The kissing balloon technique with two over‐the‐wire balloon catheters through a single 8‐french guiding catheter
Authors: Heijer Peter Den , Bernink Peter J. L. M. , Van Dijk René B. , Twisk S. P. M. , Lie Kong I. 
Published: March 2007

AbstractSome of the newer over‐the‐wire coronary angioplasty catheters have shaft sizes of 3.0 French (F) or less. The inner diameter of modern 8‐F guiding catheters is large enough to accommodate two of such balloon catheters. We report a kissing balloon procedure with two over‐the‐wire catheters through a single 8‐F guiding catheter.
Evaluation of the densitometric method of ejection fraction by direct digital subtraction left ventriculography
Authors: Shiba Kenji , Nanki Michio , Hori Hiroshi , Sakamoto Nobuo 
Published: March 2007

AbstractThe aim of the present study was to test the hypothesis that the densitometric ejection fraction (EF) could be calculated by direct contrast digital subtraction left ventriculography in a single heartbeat. Thirty patients underwent direct contrast digital subtraction left ventriculography and biplane conventional left ventriculography. The values of EF were obtained from digital subtraction ventriculograms of the first cardiac cycle after completion of the injection of the contrast medium by the videodensitometric technique and were compared with those obtained from conventional ventriculograms by the arealength method in the same patients. There was a close correlation between the densitometric EF from digital subtraction ventriculograms and the volumetric EF from conventional ventriculograms (r = 0.78). Densitometric EF measured in the 30° right anterior oblique projection highly correlated with densitometric EF measured in the 60° left anterior projection (r = 0.98). These data suggest that this densitometric technique is available in any projection and is a simple procedure for the accurate measurement of left ventricular EF.
Coronary angioplasty using new 6 french guiding catheters
Authors: Feldman Robert , Glemser Bsn Eric , Kaizer Judy , Standley Mary 
Published: March 2007

AbstractCoronary angioplasty (PTCA) was performed with specially constructed 6‐French guiding catheters with an internal lumen of 0.051 inches. In 154 patients these guiding catheters were used in a variety of configurations in conjunction with miniature balloon‐on‐a‐wire dilatation catheters in 1.5 to 3.5 mm sizes to perform PTCA.Overall patient success was 94%. PTCA was attempted in 24 totally occluded arteries with a success rate of 83% and 174 stenoses with a success rate of 97%. 6 French guiding catheters can be used to successfully perform PTCA.
Coronary arteriography in patients with dextrocardia
Authors: Blankenship James C. , Ramires Joséantonio F. 
Published: March 2007

AbstractCoronary arteriography is described in a patient with dextrocardia and situs inversus totalis. Six cases of coronary arteriography in dextrocardia were reviewed from the literature, and 3 other cases were reported from the authors' institutions. In 9 of the 10 patients, coronary arteriography was performed without difficulty using standard Judkins or Sones catheters. Angiographers encountering patients with dextrocardia may use standard coronary arteriographic techniques with a few subtle modifications.
Accordion effect in tortuous right coronary arteries during percutaneous transluminal coronary angioplasty
Authors: Rauh R. Andrew , Ninneman Robert W. , Joseph David , Gupta Vinod K. , Senior Dale G. , Miller William P. 
Published: March 2007

AbstractCoronary spasm and intimal dissection are well‐known complications of coronary angioplasty with potentially serious consequences. Their treatments are different and need to be instituted quickly to prevent vessel closure. We report two cases of mechanical deformation caused by the angioplasty hardware masquerading as dissection or spasm during coronary angioplasty of tortuous native right coronary arteries.
Case report of a coronary anomaly: Crossing obtuse marginal arteries
Authors: Bilazarian Seth D. , Jacobs Alice K. , Fonger James D. , Faxon David P. 
Published: March 2007

AbstractWe present a coronary anomaly of crossing obtuse marginal branches of the left circum flex coronary artery which has not been seen in our laboratory or previously reported. Recognition of anomalous intramyocardial branches of the circumflex artery was important to avoid confusion with branches of the left anterior descending artery in conventional angiographic views and was clinically important as well. Intramyocardial vessels may not be easily bypassed surgically, and therefore angioplasty may be a better therapeutic option.
Effects of rapid volume expansion on the right filling pressures after prosthetic valve surgery
Authors: Ilia Reuben , Weizman Shimon , Gueron Moshe 
Published: March 2007

AbstractThe effects of rapid intravascular volume expansion were studied in 12 patients, 4 to 14 years after single prosthetic heart valve replacement. The data observed showed a statistically significant mean difference before and after volume expansion of right atrial mean pressure and right ventricular end diastolic and pulmonary capillary pressures. However, right atrial and pulmonary capillary pressures equilibration was not detected. The right atrial pressure form showed abnormal variations during inspiration. Dip and plateau right ventricular diastolic pressure configuration was recorded in 6 patients after expansion, was absent in 2 and questionable in 4. A deep Y descent with an M‐shaped right atrial pressure form was recorded in all 12 patients. The explanation for these phenomena is unclear.Thus, in the absence of pressure equilibration and clinical evidence of constriction, the abnormalities recorded during rapid volume expansion should be cautiously interpreted.
Fluoroscopic guidance in transseptal catheterization for percutaneous mitral balloon valvotomy
Authors: Rocha P. , Berland J. , Rigaud M. , Fernandez F. , Bourdarias J. P. , Letac B. 
Published: March 2007

AbstractA percutaneous mitral balloon valvotomy (PMBV) was attempted on 190 patients with fluoroscopic guidance of atrial septal puncture for transseptal catheterization; In 3 cases, the procedure could not be performed. The left atrium was always reached on the first attempt, when the relationship of the Brockenbrough needle to the aortic catheter was previously observed in 3 fluoroscopic views: anteroposterior, 45° right anterior oblique, and lateral. The atrial septal puncture site was located immediately below the aortic valve level, probably in the fossa ovalis, for the first 80 patients, and at mid distance between the aortic valve level and the diaphragm for the last 110. Hemodynamic data were similar in both groups.Fluoroscopic guidance for atrial septal puncture seemed capital for patients with scoliosis or in whom a vascular distortion (e.g., advanced pregnancy, right inferior vena cava absence) prevented a perfect parallelism between the needle curve and the needle outer index.
Cardiac tamponade following coronary arterial rupture during coronary angioplasty
Authors: Nassar Hisham , Hasin Yonathan , Gotsman Mervyn S. 
Published: March 2007

AbstractWe describe a patient in whom percutaneous transluminal coronary angioplasty (PTCA) was complicated by rupture of the left anterior descending coronary artery (LAD) with pericardial tamponade. The outcome was favorable with drastic intervention which included: occlusion of the bleeding vessel with the PTCA balloon, pericardiocentesis, and ligation of the vessel without the need of aortocoronary bypass graft.
Angioplasty of an oversized venous bypass graft using two fixed wire systems
Authors: Weston Mark W. , Rinde‐Hoffman Deborah 
Published: March 2007

AbstractOversized saphenous vein bypass grafts may be inadequately dilated using currently available coronary angioplasty catheters. The hugging balloon technique has been previously described for lesions in large saphenous vein grafts. We report the initial use of the hugging balloon technique using two fixed wire angioplasty catheters in an oversized saphenous vein graft.
Percutaneous transluminal coronary angioplasty utilizing prolonged balloon inflations: Initial results and six‐month follow‐up
Authors: Staudacher Richard A. , Hess Kenneth R. , Harris Scott L. , Abu‐Khalil John , Heibig Jacques 
Published: March 2007

AbstractCoronary angioplasty (PTCA) using prolonged balloon inflation has obviated emergency coronary bypass surgery in some patients with acute occlusions at the time of PTCA. However, the use of prolonged balloon inflations has not been shown to improve longterm restenosis rates. As an alternative to the passive autoperfusion catheter, we evaluated a hemoperfusion system in which blood was obtained from the side arm of an arterial sheath and infused through the central lumen of standard balloon catheters via a modified Medrad IV pump during balloon inflation. PTCA was performed in 71 male patients (median age 57 yr). The median balloon inflation time was 4.8 minutes and the median rate of blood perfusion was 30 ml/min. PTCA was successful (lumen increase by 20 percentage points) in 83% of patients (59/71) with diameter stenosis decreasing from a median 82% to 30%.Emergency coronary bypass was required in four patients (5%). Angiographic data for six‐month followup was available on 37 patients. The restenosis rate (loss of 50% of gain) was 46% (17/37). The conclusion is that prolonged balloon inflation angioplasty has a role in complicated PTCA but offers no advantage in improving long‐term restenosis rates in elective PTCA.
Intravascular stents in the management of superior vena cava syndrome
Authors: Solomon Neil , Wholey Mark H. , Jarmolowski Chester R. 
Published: March 2007

AbstractSuperior vena cava syndrome can be effectively palliated with the use of intravascular stents. Adjunctive modalities which may be utilized prior to stent placement are thrombolytic therapy and balloon angioplasty. Six patients with an underlying malignancy were treated with these modalities. Complete resolution of symptoms occurred in five patients, and partial resolution occurred in the sixth. Two of the patients who had initial, complete resolution of symptoms had recurrences. One involved rethrombosis of the superior vena cava which occurred twice and required percutaneous thrombectomy, and the second involved restenosis requiring a percutaneous transluminal angioplasty of the SVC just distal to the stent. Both of these patients with second procedures, again, had complete resolution of symptoms. Intravascular stents are a valuable additional treatment of superior vena cava syndrome.
A femoral vein‐femoral artery loop technique for aortic dilatation in children
Authors: Hosking Martin C. K. , Benson Leland N. , Freedom Robert M. 
Published: March 2007

AbstractBalloon aortic dilatation is now a recognized therapy for aortic stenosis in children. Using retrograde approaches with either single or double balloons, successful dilatation can be readily achieved, but with little control of balloon position across the valve. We describe a femoral vein‐femoral artery loop technique via a transseptal approach which facilitates antegrade crossing of the stenotic aortic valve and allows optimal balloon control and simultaneous pressure gradient recording during the procedure.
Effect of angiotensin converting enzyme inhibition on the incidence of restenosis after percutaneous transluminal coronary angioplasty
Authors: Brozovich Frank V. , Morganroth Joel , Gottlieb Neil B. , Gottlieb Ronald S. 
Published: March 2007

AbstractTo determine whether angiotensin converting enzyme (ACE) inhibition may reduce the incidence of restenosis after percutaneous transluminal coronary angioplasty (PTCA), we retrospectively identified 322 consecutive patients who underwent a successful procedure from June 1988 to December 1989. No patients developed chest pain, ST segment elevation, positive cardiac enzymes, or other evidence of abrupt vessel closure following the PTCA. All patients received intravenous heparin after PTCA and aspirin was begun on the day prior to PTCA. Patients were separated into two groups: those at hospital discharge incidentally treated for hypertension or heart failure with ACE inhibitors (n=36), and those treated with a drug regimen which did not include ACE inhibitors (n=286). The two groups were similar with respect to age (61 ± 13.5 vs. 60 ± 12.5, p=NS) and other demographic characteristics. Restenosis, defined as the presentation to a physician with symptoms of angina within 6 months of the PTCA and the finding on repeat catheterization of a significant restenosis at the site of the PTCA, occurred in 30% of the patients who were discharged on a drug regimen which did not include ACE inhibitors vs. 3% (p <.05) in those treated with an ACE inhibitor. Thus, it appears that the use of ACE inhibitors may significantly reduce the incidence of restenosis after successful PTCA.
The naci registry: An instrument for the evaluation of new approaches to coronary intervention
Authors: Steenkiste Ann R. , Baim Donald S. , Sipperly Mary Ellen , Desvigne‐Nickens Patrice , Robertson Thomas , Detre Katherine 
Published: March 2007

AbstractThe New Approaches to Coronary Intervention (NACI) Registry was developed to collect in‐depth data about patients whose coronary artery lesions are being treated with new interventional techniques such as atherectomy, stents, and laser devices. The NACI Registry database distinguishes among several possible „modes”︁ for device use, such as preparatory, planned definitive, and bailout use. Common definitions are used for data collection across all devices, and device‐specific forms are used to record procedural details. NACI's unique modular form design facilitates thorough data collection, even for the most complex treatment scenarios. The database structure allows for data analysis at the patient, procedure, lesion, and device levels, as required to perform in‐depth analyses of the immediate and long‐term success of new devices. Once adequate knowledge of basic device performance has been collected, the Registry structure can also allow expeditious planning and performance of randomized trials comparing a new device to conventional PTCA.
Coronary occlusion following diagnostic angiography: Salvage by intracoronary stenting
Authors: St. Goar Frederick G. , Giacomini John C. , Fischell Tim A. 
Published: March 2007

AbstractCatheter‐induced coronary artery dissection and occlusion is a rare but serious complication of diagnostic cardiac angiography. This report describes the successful management of this complication with an intracoronary stent after prolonged balloon inflations and intracoronary thrombolytic therapy were unsuccessful.
Hemodynamic effects of prostaglandin e1 in patients with congenital heart disease and pulmonary hypertension
Authors: Weesner Kenneth M. 
Published: March 2007

AbstractInvestigations were performed to determine whether prostaglandin E, (PGE1) would cause a favorable change in pulmonary hemodynamics in pediatric patients with congenital heart disease and elevated pulmonary vascular resistance. Twenty‐seven patients (ages 0.5 months to 19 years) were studied. PGE1 caused a significant decrease in mean pulmonary artery pressure with 0.05 μg/kg/min and 0.1 μg/kg/min infusions (p = .0004). There were significant increases in pulmonary blood flow (p = .0007), and decreases in pulmonary vascular resistance (p = .0001); changes in systemic pressure, resistance, oxygen consumption, and heart rate were minimal. Twenty‐three patients underwent heart surgery after catheterization, nineteen of these survived. The four nonsurvivors had higher initial pulmonary resistance (PVR) and less decline in PVR with PGE, than survivors. This study shows that PGE, is an effective pulmonary vasodilator in patients with congenital heart disease and elevated pulmonary vascular resistance.
Surgical aortic valvuloplasty using the cavitron ultrasonic surgical aspirator: An invasive hemodynamic follow‐up study
Authors: Leithe Mark E. , Kevin Harrison J. , Davidson Charles J. , Scott Rankin J. , Pierce Cynthia , Kisslo Katherine B. , Bashore Thomas M. 
Published: March 2007

AbstractValve repair and calcium debridement in patients with calcific aortic stenosis, using the Cavitron Ultrasonic Surgical Aspirator (CUSA), results in a reduction in the aortic valve gradient while potentially avoiding long‐term problems inherent to prosthetic valves. Invasive followup data in these patients has not previously been reported. Ten patients in whom CUSA debridement was performed underwent cardiac catheterization prior to and 8.0 ± 2.5 months following the procedure.Compared to baseline, the aortic valve area significantly increased from 0.75 ± 0.2 to 1.1 ± 0.3 cm2 (p = 0.009) and the mean gradient was significantly reduced from 54 ± 21 to 27 ± 21 mmHg (p = 0.02) at followup. No significant change was noted in cardiac output, ejection fraction, left ventricular end systolic or diastolic volumes or left ventricular end diastolic pressure. However, 6 patients were found to have at least one grade worsening of aortic regurgitation. The development of increased aortic insufficiency in many patients after CUSA aortic valve debridement will likely limit this procedure's clinical utility.