bluuebunny/crossref_metadata_2025_split huggingface dataset:
Left internal mammary—left ventricular fistula after vineberg operation
Authors: Kronzon Itzhak , Schloss Michael , Glassman Ephraim 
Published: March 2007

AbstractThis communication presents an unusual complication in a patient who underwent the Vineberg procedure with the formation of an internal mammary to left‐ventricular fistula, which caused a new apical diastolic murmur. This represents a previously unreported etiology for the appearance of an apical blowing diastolic murmur.
Aortic atresia with normal left ventricle distinctive angiocardiographic findings
Authors: Freedom Robert M. , Culham J. A. G. , Rowe Richard D. 
Published: March 2007

AbstractThe distinctive angiocardiographic findings in a patient with aortic atresia and normal left ventricle are presented. This diagnosis was initially made at 6 days of age. Because the infant was felt to be a potential candidate for ventriculo‐aortic reconstitution, she underwent construction of a pulmonary artery—descending thoracic aorta anastomosis and bilateral pulmonary artery banding to prevent intractable congestive heart failure and pulmonary vascular obstructive disease. Her second hospital admission at 16 months of age was necessitated because of increasing cyanosis despite excellent growth and development. Repeat hemodynamic and angiocardiographic investigations were performed; these and pertinent pathologic observations are the subject of this report.Aortic atresia, ventricular septal defect, and a normally developed left ventricle is uncommon, occurring in only 7 of 148 patients with aortic atresia in the Cardiovascular Registry of the Hospital for Sick Children. Selective aortography will demonstrate a hypoplastic ascending aorta in all cases of aortic atresia. However, the epicardial distribution of the left coronary artery system will differ, depending on the size of the left ventricular cavity. Selective left ventricular cineangiocardiography will reveal the size of the left ventricle in the patient with aortic atresia, ventricular septal defect, and normal left ventricle. The muscular subaortic atresia caan be profiled in the lateral or left anterior oblique angiocardiograms in these patients. Finally, possible methods of „physiological”︁ repair of this defect are discussed.
Atypical late cardiac tamponade after mitral valve replacement: Case presentation with hemodynamic and echocardiographic observations
Authors: Orzan Fulvio , Guttin Jorge , Dear Wayne E. 
Published: March 2007

AbstractA patient developed oliguria, peripheral edema, and dyspnea 5 days after mitral valve replacement. Chest roentgenogram and echocardiogram suggested pericardial effusion. Although pulsus paradoxus was absent, cardiac tamponade was suspected and subsequently confirmed during pericardiocentesis. Before pericardiocentesis right and left ventricular diastolic pressures were equal, as well as intrapericardial and right atrial pressures. The left ventricular cavity was reduced in size on the echocardiogram. Interventricular septal motion was normal. Pericardiocentesis normalized the hemodynamics and allowed the left ventricle to reexpand. Certain atypical features are tentatively explained as the combined effect of constrictive and effusive components caused by intrapericardial hemorrhage.
Longitudinal angulation in coronary arteriography: Apparatus and evaluation
Authors: Frederick Philip R. , Fry W. Harry , Russell J. Gordon , Marshall Hiram W. 
Published: March 2007

AbstractWhen good visualization of the left coronary artery and proximal branches is difficult, the longitudinally angulated projection has proved useful. An accessory for achieving this angulation with a conventional angiographic table and without sacrificing the advantages of video monitoring and the protection of lead vinyl shielding is described.
Pediatric cardiac angiography using a 4 French Catheter
Authors: Keane John F. , Freed Michael D. , Fellows Kenneth E. , Fyler Donald C. 
Published: March 2007

AbstractThirty specially designed 4 French pigtail white Teflon catheters 50 cm in length were utilized for angiography using the retrograde arterial approach in 26 infants and children. Angiographic opacification was considered very satisfactory. Apart from one episode of temporary occlusion of the right coronary artery ostium, there were no other significant complications. The catheters were introduced percutaneously in 21 instances and distal pulses were palpable in 18 patients by the second day after catheterization. At postcatheterization testing with increasing volumes and flow rates, the first rupture occurred, delivering 13 ml at 13 ml/second. On testing an additional 15 catheters using fixed volumes of 5, 10, and 15 ml at increasing flow rates, rupture first occurred at 34, 22, and 18 ml/second, respectively. We conclude that this small catheter is relatively safe and satisfactory for the retrograde arterial approach in the study of infants and children.
Antegrade left heart catheterization
Authors: Waldman J. D. , Pappelbaum J. S. , Turner S. W. 
Published: March 2007

AbstractRetrograde arterial catheterization has been the standard approach to hemodynamic and angiographic evaluation of the left ventricle and systemic arterial system. An alternative approach—antegrade left heart catheterization—is reported that circumvents arterial puncture.During cardiac catheterization from the femoral vein in 18 children with normally related great arteries who had interatrial communications, a balloon‐tipped catheter was looped in a „clockwise”︁ fashion through the left atrium and left ventricle and into the ascending aorta. In 17 children the maneuver was rapidly accomplished without complications; it proved possible to perform in an infant with a hypoplastic left ventricular cavity, and was employed to perform a renal arteriogram.The major advantage of antegrade left heart catheterization is avoidance of complications related to arterial puncture. The antegrade approach also avoids right arm cut‐down in children with coarctation of the aorta.
The nonsurgical retrieval of intracardiac foreign bodies — an international survey
Authors: Bloomfield Dennis A. 
Published: March 2007

AbstractAn international survey of nonsurgical retrieval of intracardiac foreign bodies provided data on 180 published and unpublished cases.The data was analyzed to evaluate the respective merits and drawbacks of the 3 basic retrieval techniques, the snare, the wire basket, and the endoscopy forceps, the routes and methods of insertion, the success rate, and the complications. Eighty percent of foreign bodies were polyethylene central venous pressure catheters, cut in two by the needle introducer. The site of lodgement of these fragments was predictable and determined by the site of entry and length of the fragment. The basic retrieval instruments and their modifications are described. Operating instructions are detailed together with adjunct methods of repositioning fragments for easier retrieval. Factors associated with the small percentage of unsuccessful retrieval attempts include fragments totally in the distal pulmonary artery, extravascular lodging sites, chronically‐implanted fragments, and pacemaker‐catheter fragments.For the vast majority of cases, however, these simple and uncomplicated techniques have been highly successful and widely utilized in the nonsurgical retrieval of intracardiac foreign bodies.
Aortic root motion determined by ultrasound: Relation to cardiac performance in man
Authors: Burggraf Gary W. , Mathew M. Thomas , Parker John O. 
Published: March 2007

AbstractThe purpose of this study was to determine if aortic root systolic anteroposterior excursion measured ultrasonically is related to cardiac performance. Aortic motion was 9 ± 1.5 mm (mean ± SD) in 30 normal subjects (range 7–12 mm). Ten patients with coronary artery disease and congestive failure and 10 with congestive cardiomyopathy had significantly smaller values of 4 ± 1.2 and 5 ± 1.7 mm, respectively (P < 0.001). In 28 subjects undergoing cardiac catheterization, aortic root motion correlated positively with stroke volume (r = 0.59), but did not correlate significantly with ejection fraction. By increasing heart rate in 14 subjects from 75 to 174 beats/min with atrial pacing, stroke volume decreased from 81 ± 22 to 34 ± 14 ml/beat and aortic excursion from 10 ± 1.6 to 5 ± 1.5 mm (P < 0.001). This study has shown: (1) Aortic root motion less than or equal to 6 mm indicates left ventricular dysfunction; (2) stroke volume correlates positively with, but cannot be accurately predicted from, root motion.
Proof by catheterization of mitral valvular origin of a systolic click
Authors: Towne William D. , Patel Ramesh , Cruz Jairo B. , Mirrer Brooks , Kramer Neil E. 
Published: March 2007

AbstractA patient with a loud intermittent midsystolic click presented a problem in differential diagnosis between mitral valve prolapse (intracardiac origin of the click) and left pneumothorax (extracardiac origin). External phonocardiography performed at the time of cardiac catheterization revealed that this loud midsystolic click disappeared whenever a catheter was positioned across the mitral valve. It reappeared whenever the catheter was removed from the transmitral position. Selective left ventriculography confirmed the diagnosis of mitral valve prolapse.
Significance of momentary pressure changes during isovolumic relaxation
Authors: Sabbah Hani N , Khaja Fareed , Anbe Daniel T. , Stein Paul D. 
Published: March 2007

AbstractSudden momentary fluctuations of left ventricular, aortic, right ventricular, and pulmonary arterial pressure were noted during isovolumic relaxation of the respective ventricles. The presence of such transients raised questions related to their meaning and significance. The purpose of this report is to emphasize the nonartifactual nature of these pressure transients and to describe their origin and significance in the cardiac cycle. Pressure transients were observed in 31 of 32 patients with normal aortic valves, and in 17 patients with normal pulmonary valves in whom right‐sided measurements were made. Such transients, however, were absent on the left ventricular and aortic pressure recordings of three patients with calcific aortic stenosis. These sudden changes in pressure are indicative of momentary compressions and rarefactions of the blood that occur within the ventricles and their respective arterial chambers. Whenever present, pressure transients were noted to occur coincident with the major aortic or pulmonary components of the second sound. Since intraarterial sound pressure is derived from the pressure signal by filtering the low frequencies and amplifying the high frequencies, one can deduce that intraarterial sound pressure is in fact a representation of these pressure changes. The recognition of these pressure transients on an otherwise smooth ventricular, aortic, or pulmonary arterial pressure places in proper perspective their role in the production of the second heart sound.
Case report of congenital tricuspid insufficiency
Authors: Pernot C. , Hoeffel J. C. , Henry M. , Piwnica A. 
Published: March 2007

AbstractCongenital tricuspid insufficiency is a rare disease secondary to malformations of the tricuspid valve and of their chordae tendinae. Diagnosis is difficult but worthwhile, since surgery can be performed. We report one case repaired by surgery.
Extrinsic compression of the heart by tumor masquerading as cardiac tamponade
Authors: Wynne Joshua , Markis John E. , Grossman William 
Published: March 2007

AbstractA patient with known intrathoracic tumor presented with findings suggestive of cardiac tamponade. At cardiac catheterization, the entire heart was displaced superiorly and anteriorly by the tumor mass, and this accounted for the observed cardiac hemodynamics, in the absence of discernible pericardial effusion.
Calcification in an intramyocardial mass lesion: Isolated calcification of an accessory papillary muscle in a patient with mitral prolapse
Authors: Klein G. J. , Kostuk W. J. , Black L. , Ahuja S. P. 
Published: March 2007

AbstractCardiac catheterization in a 50‐year‐old male with mitral leaflet prolapse revealed a filling defect with calcification in the high posterolateral wall. At surgery, the lesion was found to be a calcified accessory papillary muscle with thickened, calcified chordae to the posterior leaflet. The calcification and fibrosis were felt to be due to friction lesions between elongated chordae and the endocardium. Intracardiac calcification in mitral leaflet prolapse may suggest calcified mitral apparatus.
Use of prostaglandin E1 for emergency palliation of symptomatic coarctation of the aorta
Authors: Graham Thomas P. , Atwood Gerald F. , Boucek Robert J. 
Published: March 2007

AbstractProstaglandin E1 (PGE1) was infused into the pulmonary artery in a 1‐day‐old infant with symptomatic coarctation. Umbilical artery pressure rose from 50/40 mm Hg before infusion to 83/48 mm Hg after infusion, indicating significant improvement in lower‐body perfusion. Successful coarctation repair was performed during continued PGE1 infusion. To our knowledge, this is the first reported patient in whom PGE1 has been used for successful emergency palliation of symptomatic coarctation.
Artifact production with micromanometers used to record intracardiac pressure and sound
Authors: Brown C. M. , Holmes J. R. 
Published: March 2007

AbstractIn horses experimental right and left heart catheterization using a catheter with two microtransducers 9 cm apart, usually in a transvalval position produced pressure and sound artifacts that confounded the diagnosis. Most were probably due to malpositioning resulting in movement through a valve during recording or impingement on the valve cusps or the chordae tendineae or lodgement in the apex of the heart. The recognition of these artifacts is particularly important in studies of large animals in which catheter siting cannot be monitored by radiography.
Transmural myocardial infarction in the absence of coronary arterial luminal narrowing in a young man with single coronary arterial anomaly
Authors: Joswig B. C. , Warren S. E. , Vieweg W. V. R. , Hagan A. D. 
Published: March 2007

AbstractReported is a case of single coronary arterial anomaly (SCAA) with its origin from the right sinus of Valsalva as demonstrated by selective coronary arteriography. No branches coursed between the great vessels. Electrocardiography and vectorcardiography were consistent with inferior wall myocardial infarction, although subsequent coronary arteriograms were free of luminal narrowing.While this is an infrequently recognized isolated coronary anomaly, it may carry significant risk of myocardial ischemia. This risk may not depend alone upon the passage of a branch of SCAA between the great vessels. Evidence of precocious ischemic heart disease should alert the angiographer to look for anomalous coronary anatomy.
An inexpensive computer‐aided system for quantitative echocardiography
Authors: Rhea Thomas C. , Boucek Robert J. , Petty Dolores , Nelson James H. , Graham Thomas P. 
Published: March 2007

AbstractA comprehensive system has been developed to quantitatively analyze standard M‐mode pediatric echocardiograms. It utilizes relatively inexpensive hardware together with a telephone coupling to a time‐sharing computer. A complete patient report on the study is printed out upon completion, and all the data are digitally stored for future research computations. Initial and operating costs for this system are significantly less than for any comparable one available.
Computer analysis of oximetry data in cardiac catheterization
Authors: Gillette Paul C. , Meester G. T. , Hoare M. D. , Zeelenberg C. , McNamara D. G. , Hugenholtz P. G. 
Published: March 2007

AbstractAn on‐line computer technique is described for the detection and quantitation of left‐to‐right shunts. The computer used Student's t test to evaluate the probability that variations in right heart oxygen saturations were due to left‐to‐right shunts. The computer method was found to compare favorably to the present step‐up method of detecting left‐to‐right shunts. The computer also calculated pulmonary blood flow, systemic blood flow, their ratio, and shunt blood flow as accurately as standard methods, as evidenced by correlation coefficients of 0.98, 0.94, 0.95, and 0.71 between the computer and hand calculations.
Morphological and topographical variations of the outlet chamber in complex congenital heart disease: An angiocardiographic study
Authors: Freedom Robert M. , Rowe Richard D. 
Published: March 2007

AbstractThe outlet chamber of the human heart can show considerable variations in its morphology and topography (relationship to main ventricular chamber), and such variations in anatomy and spacial relationship may be predictive of the associated intracardiac anatomy. Although there is considerable debate about whether the position of the outlet chamber is indicative of the type of bulboventricular loop (whether D‐ or L‐), a right‐sided and anterior outlet chamber has different implications than a left‐sided, superior, and more posterior positioned one. The inflows into the outlet chamber can vary anatomically, and progressive changes in the calibers of these communications can adversely alter the natural history. One or both of the greak vessels, or neither, or a persistent truncus arteriosus can originate from the outlet chamber, and any significant morphological change in the outlet chamber may or may not adversely affect either the pulmonary or systemic blood supply, or both. Finally, any consideration of the outlet chamber raises important conceptual difference in terminologies. At present, there is not unanimity as to what constitutes either an outlet chamber (as compared to a “small right ventricle” in tricuspid atresia) or a single (primitive) ventricle. Any discussion of the morphological and topographical variations of the outlet chamber must be viewed with respect to the terminology employed.
Hemodynamic assessment of the new aortic carpentier‐edwards bioprosthesis
Authors: Lee Garrett , Grehl Todd M. , Joye James A. , Kaku Roy F. , Harter Wynn , Demaria Anthony N. , Mason Dean T. 
Published: March 2007

AbstractAlthough glutaraldehyde‐preserved porcine aortic Hancock heterografts have lower thromboembolism incidence than mechanical aortic valves, Hancock xenografts provide less functional aortic outflow orifices and thereby greater transvalvular gradients than mechanical prostheses. The newly developed aortic Carpentier‐Edwards porcine heterografts comprise a thin‐walled Elgiloy flexible metal stent covered with Teflon which provides somewhat wider internal orifices than aortic Hancock valves of the same external annulus diameter. Since aortic Carpentier‐Edwards xenografts have not been clincially evaluated previously, the present study assessed cardiac function and heterograft performance (1.7 months postoperation) and clinical status (4.2 months postoperation) of 19 patients with severe aortic stenosis and/or regurgitation prior to surgery. Left ventricular end‐diastolic pressures decreased (17 to 9 mm Hg), cardiac index remained normal, and clincial symptomatology diminished markedly. Mean peak transxenograft systolic pressure was only 16 mm Hg (valve area 1.73 cm2), without meaningful regurgitation. Thus aortic Carpentier‐Edwards bioprostheses provide generally excellent heterograft function which appears more favorable than previous reports of Hancock xenografts.
Effects of dextran infusion on left ventricular volume and pressure in man
Authors: Burggraf Gary W. , Parker John O. 
Published: March 2007

AbstractThe purpose of this investigation was to quantitate the changes in left ventricular volume and end‐diastolic pressure that occur with rapid infusion of 500 ml of low molecular weight dextran, and thus to study left ventricular pressure‐volume relationships. Left ventricular pressure and echocardiographic dimensions were recorded before, during, and following dextran infusion in eight patients with normal left ventricular function. With the infusion of dextran, left ventricular end‐diastolic pressure rose progressively from 10 ± 3 mmHg (mean ± SD) to 24 ± 5 mmHg, whereas end‐diastolic volume increased from 95 ± 23 ml to 118 ± 26 ml (24%). These results serve to emphasize the steepness of the left ventricular pressure‐volume relationship at end‐diastole in subjects with normal ventricular function when in the supine position.
Determination and importance of the magnification factor in the calculation of ventricular volume: Development of a simple, accurate method
Authors: Cascade Philip N. , Wajszczuk Waldemar J. , Kerin Nicholas Z. , Mantel Joseph , Rubenfire Melvyn 
Published: March 2007

AbstractA study of single‐plane right anterior oblique left ventricular angiography was undertaken to determine the importance of obtaining correct positioning of a magnification grid and to develop a simple but accurate technique to minimize magnification errors. Theoretical and experimental volume determinations demonstrated 3% to 28% volume errors for grid placement errors ranging from 1 centimeter to 5 centimeters. An experiment was designed whereby cross table lateral radiographs of the chest were taken during contrast injections of the left ventricle. The relative position of the left ventricular center was found at a point 66% of the distance from the anterior to the posterior margin of the heart. Finding this point on noncontrast lateral films of the chest for positioning of a square centimeter grid should yield a more accurate determination of the magnification factor than other current emperic methods.
Plasma norepinephrine concentration in the coronary sinus in cardiomyopathies
Authors: Haneda Takashi , Miura Yukio , Miyazawa Kozui , Honna Takao , Arai Tohru , Nakajima Toshiyuki , Miura Takuji , Yoshinaga Kaoru , Takishima Tamotsu 
Published: March 2007

AbstractIn order to evaluate the cardiac sympathetic nerve tone in cardiomyopathies, plasma norepinephrine concentration in the coronary sinus (NECS) and artery (NEA) was measured by THI method in five patients with the hypertrophic type (HCM) and in seven with the congestive type (CCM); six patients with functional murmur served as controls. NECS was 182 ± 39 ng/liter (SEM) in HCM, 288 ± 47 in CCM, and 306 ± 65 in controls. The NECS – NEA difference (Δ) was 9 ± 22 ng/liter in HCM, −57 ± 34 in CCM, and 81 ± 29 in controls. Norepinephrine overflow into the coronary sinus, which was calculated by multiplying coronary sinus plasma flow by Δ, was 0.54 ± 0.86 ng/min/100gm, −2.81 ± 1.47, and 3.73 ± 1.77, respectively. Norepinephrine overflow and Δ were significantly lower in CCM than in controls. The results suggest that an excessive sympathetic discharge does not exist in HCM and that cardiac sympathetic activity is reduced in CCM.