bluuebunny/crossref_metadata_2025_split huggingface dataset:
A review of commercial computer‐based systems in the cardiac catheterization laboratory (1977)
Authors: Covvey H. Dominic , Olley Peter M. , Wigle E. Douglas 
Published: March 2007

AbstractCurrently at least nine companies are marketing computer‐based products in North America to support on‐line data acquisition, processing, and reporting in the cardiac catheterization laboratory. A tenth company is preparing a new offering to succeed an earlier product.The companies surveyed include Beehive (BEE), Electronics for Medicine (E for M), Hewlett‐Packard (H/P), Honeywell (HON), Medlab (MED), Mennen‐Greatbatch (M‐G), Midwest Electronics (MID), Philips (PHIL), and Siemens (SIE). Artronics is in the process of product development and was unable to respond. General Electric appears to be considering an announcement.The products have been compared on the basis of the functions they support. System features and a spectrum of capabilities are noted. With the differences will come a finite problem in system selection to be faced by each laboratory considering such technology.Finally, an average cost per patient processed ranging from a minimum of $20.00 to $37.00 is considered relative to the problem of cost‐benefit justification. Although the analysis done here is relatively superficial, it does not appear possible to cost‐benefit justify such systems. Therefore it would appear that work must be done to explore their potential in enhancing the effectiveness of various types of laboratories, to reduce their cost, or to seriously challenge their value.
Diagnosis of left atrial tumors by coronary angiography and left ventriculography
Authors: Shapiro Jerome B. , Kronzon Itzhak , Winer Howard E. 
Published: March 2007

AbstractThe left ventriculograms and pulmonary and coronary angiograms of eight patients with left atrial (LA) tumors were reviewed. The patients' ages ranged from 52 to 65 years. In each case the tumor was outlined during left ventriculography. Coronary arteriography allowed visualization of tumor vessels in six cases (six of seven myxomas). Two of the patients had significant coronary obstructions.It is concluded that a left ventriculogram is a sensitive diagnostic test for the presence of LA tumors. Coronary arteriography is indicated in patients with LA tumors in this age group and is likely to provide independent evidence of the presence of an LA tumor.
Idiopathic hypertrophic subaortic stenosis and ventricular preexcitation
Authors: Kerin Nicholas Z. , Blonder Ronald , Wajszczuk Waldemar J. , Rubenfire Melvyn 
Published: March 2007

AbstractTwo patients who had idiopathic hypertrophic suBAortic stenosis (IHSS) and type A ventricular preexcitation were studied and showed variations of the subvalvular flow gradients. The increase in subvalvular gradient, occurring at a time when preexcitation developed, was associated with significant increase of the systolic murmur and the systolic anterior motion of the mitral valve.In patient 1, the significant increase in subvalvular gradient during ventricular preexcitation was also confirmed by catheterization of the left side of the heart. The increase of the gradient with the development of the ventricular preexcitation was apparently due to decreased end‐diastolic volume. The importance of ventricular volume considered as a variable affecting outflow tract gradient in idopathic hypertrophic suBAortic stenosis is emphasized.
Cor triatriatum with mitral regurgitation in a 52‐year‐old male
Authors: Leavitt Timothy W. , Nixon J. V. 
Published: March 2007

AbstractThe clinical, echocardiographic, and cineangiographic features of the oldest known living case of cor triatriatum are presented. Mitral regurgitation, also found in this patient, has been reported on only two previous occasions to coexist with otherwise uncomplicated cor triatriatum. The value of two‐dimensional echocardiography in the identification of this congenital anomaly is confirmed.
The effect of supine rotation on left ventricular dimensions in man: A study using radio‐opaque epicardial markers
Authors: Vine Donald L. , Todd Edward P. , Cole James S. , Zeok John V. 
Published: March 2007

AbstractIt has been reported that patient rotation into the left lateral decubitus position (30° rao) produces significant changes in the regression equations used for left ventricular volume determination and that normal values for echocardiographic left ventricular dimensions obtained from supine patients differ from those obtained after rotation. The purpose of this study was to establish whether patient rotation is associated with changes in left ventricular size and systolic function. The distances between left ventricular epicardial markers attached at the time of cardiac surgery were measured using biplane cineradiography in 14 patients in order to determine left ventricular dimensions before and after rotation. Supine epicardial left ventricular dimensions were not significantly different from those obtained with the patient rotated 30° rao. These results suggest that reported changes in invasive and noninvasive measurements of left ventricular function associated with patient rotation are not primarily due to changes in left ventricular size.
Left main coronary artery ostial stenosis: Clinical markers, angiographic recognition and distinction from left main disease
Authors: Salem Bakr I. , Terasawa Masahisa , Mathur Virendra S. , Garcia Efrain , De Castro Carlos M. , Hall Robert J. 
Published: March 2007

AbstractAmong 1254 patients with coronary artery occlusive disease (CAOD) who underwent cardiac catheterization studies in our laboratory from 1975 through 1977, 114 (9%) had significant (≥50%) stenosis of the left main coronary artery (LMCA). Thirty‐four of the 114 (29.8%) had stenosis of the LMCA ostium (2.7% of all CAOD patients). Clinical, hemodynamic, and angiographic data of the 34 patients were analyzed. Unstable angina was more frequent in these patients, most of whom were in functional classes III and IV, than those with other LMCA lesions. Of the 18 who underwent treadmill exercise testing, results were positive in 16 (11 of whom had ST segment depression ≥2 mm Hg), negative in none and indeterminate in two. By avoiding overlapping the coronary ostium with the sinus of Valsalva without significant foreshortening of the LMCA during angiography, LMCA ostial stenosis was recognizable in all patients in the moderate left anterior oblique position only and not in other projections. Coronary arteriography was performed without occurrence of ventricular fibrillation, infarction, or any other morbidity or mortality in the 34, as well as in the entire group of 114 patients with LMCA disease. To ensure a safe procedure, left ventricular filling pressure was monitored constantly via a catheter in the pulmonary artery, and patients experiencing sharp increases following coronary injections were promptly treated with nitroglycerine. Coronary artery bypass, with an average of 3.2 grafts per patient, was performed in 30 patients with a survival of 97% and only one death in a patient who underwent aortic valve replacement and triple bypass. Stenosis of the ostium of the LMCA is not an uncommon lesion in patients with CAOD and should be suspected in all patients whose symptoms are severe. Coronary angiography, performed with adequate precautions, as well as aortocoronary bypass, can be accomplished successfully.
Intracardiac M‐mode echocardiography for continuous left ventricular monitoring: Method and potential application
Authors: Conetta D. A. , Christie L. G. , Pepine Carl J. , Nichols Wilmer W. , Conti C. Richard 
Published: March 2007

AbstractBecause no accurate and readily applied method exists for continuous recording of left ventricular cavity dimensions and wall motion in man, we designed a catheter‐mounted echocardiographic probe. The purpose of this report is to describe the instrumentation, technique, limitations, complications and preliminary observations employing the probe in humans. The echo transducer built into a cardiac catheter allowed positioning in the right heart under fluoroscopy. The echo signals permitted continuous left ventricular cavity measurements at rest and during maneuvers. Our results suggest that intracardiac echo may be able to provide clear definition of motion patterns of the mitral valve and left ventricular walls. The ultrasonic catheter is an instrument that potentially offers a new technique for continuous monitoring of left ventricular size and motion.
Aortic vasa vasorum in cyanotic congenital heart disease
Authors: Jones R. S. W. , Culham J. A. G. , Freedom R. M. 
Published: March 2007

AbstractThree cases of longstanding untreated cyanotic congenital heart disease are presented. In addition to collateral circulation from bronchial, intercostal, and inferior phrenic arteries, thoracic aortic vasa vasorum were visualized. We believe this may represent an additional collateral pathway to the lungs. The angiography of these cases is presented.
Massive hemoptysis secondary to flow‐directed thermodilution catheters
Authors: Haapaniemi John , Gadowski Raymond , Naini Mansoor , Green Henry , Mackenzie Douglas , Rubenfire Melvyn 
Published: March 2007

AbstractHemoptysis is an unusual complication of flow‐directed (Swan‐Ganz) catheters. Over‐inflation of the balloon with a shearing‐induced rupture of a small pulmonary artery, and the spear effect of the catheter tip appear to be the mechanisms in the two cases presented. Diligent care to avoid overinflation of the balloon in the pulmonary capillary wedge position by observation of the pressure waveform is critical. The spear effect that is frequently seen during insertion may be eliminated by deflating the balloon at the first appearance of the pulmonary artery waveform and gradual advancement of the catheter five to eight cm, when the balloon is then reinflated to obtain the wedge.
Recurrence of prinzmetal angina seven years following aortocoronary bypass surgery: A clinical and angiographic follow‐up
Authors: Crittin Jean , Mizgala Henry F. , Waters David D. , Theroux Pierre , Lesperance Jacques 
Published: March 2007

AbstractA patient with Prinzmetal angina and ST segment elevation in the anterior ECG leads became asymptomatic after a 50% left anterior descending coronary artery stenosis was bypassed. However, seven years later Prinzmetal angina recurred but with ST segment elevation in the inferior ECG leads. Although the coronary bypass graft had remained patent, the proximal and distal left anterior descending coronary artery was occluded. No significant stenosis was present in the right coronary artery. Perhexiline maleate controlled his symptoms but when the drug was stopped because of side effects an acute inferior myocardial infarction occurred.
Percutaneous preformed single catheter coronary arteriography and its complications—10,000 cases
Authors: Vijay N. K. , Schoonmaker F. W. 
Published: March 2007

AbstractThe single preformed catheter has offered an alternative to the conventional approaches to study of the coronary circulation and ventriculography. It has the advantages of being introduced percutaneously without multiple changes for routine study or for provocative drug testing such as for spasm with Ergonovine maleate or muscular bridges with nitroglycerine. It requires no arteriotomy and has been associated with a low complication rate.
Quantitative coronary arteriography using 105‐MM photospot angiography and an optical magnifying device
Authors: Feldman Robert L. , Pepine Carl J. , Curry R. Charles , Conti C. Richard 
Published: March 2007

AbstractA quantitative coronary arteriographic technique is described utilizing 105‐mm photospot angiography and a hand‐held optical magnifying device. This technique is rapid, accurate, and reproducible. We feel this technique has potential in evaluating coronary responses to acute interventions and in the long term evaluation of progression or regression of atherosclerotic disease.
Inexpensive radiation protective glasses
Authors: Dillon James C. 
Published: March 2007

AbstractUsing the services of a local optical supply house, fabrication and testing of eyeglasses of a high lead content that could be used to protect the eye from tha hazards of radiation were evaluated. Two separate types of eyeglasses were manufactured (a prototype followed by a second pair), and these were tested against a commercially available pair of radiation protective glasses. The protection offered by the locally manufactured pair of glasses exceeded the commercial pair and the cost savings are significant.
Evaluation of segmental left ventricular wall motion by equilibrium gated radionuclide ventriculography
Authors: Van Nostrand Douglas , Janowitz Warren R. , Holmes David R. , Cohen Howard A. 
Published: March 2007

AbstractThe ability of equilibrium gated radionuclide ventriculography to detect segmental left ventricular (LV) wall motion abnormalities was determined in 26 patients undergoing cardiac catheterization. Multiple gated studies obtained in 30° right anterior oblique and 45° left anterior oblique projections, played back in a movie format, were compared to the corresponding LV ventriculograms. The LV wall in the two projections was divided into eight segments. Each segment was graded as normal, hypokinetic, akinetic, dyskinetic, or indeterminate. Thirteen percent of the segments in the gated images were indeterminate; 24 out of 27 of these were proximal or distal inferior wall segments.There was exact agreement in 86% of the remaining segments. The sensitivity of the radionuclide technique for detecting normal versus any abnormal wall motion was 71%, with a specificity of 99%. Equilibrium gated ventriculography is an excellent noninvasive technique for evaluating segmental LV wall motion. It is least reliable in assessing the proximal inferior wall and interventricular septum.
Foreign body retrieval from the heart by two catheter technique
Authors: Khaja Fareed , Lakier Jeffrey 
Published: March 2007

AbstractForeign bodies that lodge accidentally in the heart or great vessels can be retrieved successfully without thoracotomy. This report describes retrieval of a 15‐centimeter‐long central venous catheter lodged in the right side of the heart. Two catheters were introduced to effect retrieval, one from the arm and the other from the leg. To our knowledge this approach has not been described previously.
Echocardiographic findings in cardiogenic shock due to right ventricular myocardial infarction
Authors: Elkayam Uri , Halprin Stanley L. , Frishman William , Strom Joel , Cohen Martin N. 
Published: March 2007

AbstractThe echocardiographic findings in a patient with cardiogenic shock secondary to acute right ventricular myocardial infarction based on typical clinical, electrocardiographic, and hemodynamic features are described.The echocardiogram demonstrated a large RV/LV minor axis ratio caused by a volume overload of the right ventricle and an underfilled left ventricle. The interventricular septum showed abnormal movement, presumably due to right ventricular overload or severe disease of the left anterior descending coronary artery. Diminished septal systolic thickening, as seen in our patient, may be explained by extension of the infarct from the right ventricle to the adjacent part of the septum. Predominant right ventricular involvement can be a cause for a correctable hypotension in patients with acute myocardial infarction and should therefore be recognized early. The echocardiographic picture demonstrated in our patient, when considered in conjunction with the clinical status, can be useful for early diagnosis.
Ejection fraction derived by M‐mode echocardiography: A table and comments
Authors: Kessler Kenneth M. 
Published: March 2007

AbstractLeft ventricular ejection fraction is frequently quantitated by M‐mode echocardiography despite limitations, including 1) the ability to measure an accurate left ventricular short axis, 2) the mathematic and geometric assumptions used to derive the volumes from which the ejection fraction is calculated, and 3) the lack of applicability to asynergic ventricles. Nevertheless, using a cubed function or correction formula, ejection fraction can be calculated for symmetrically contracting, normally sized, and enlarged left ventricles. A table and accompanying comments are presented.
Distribution and severity of coronary artery disease in 500 patients with angina pectoris
Authors: Vieweg W. V. R. , Alpert J. S. , Johnson A. D. , Dennish G. W. , Nelson D. P. , Warren S. E. , Hagan A. D. 
Published: March 2007

AbstractThe distribution and severity of coronary disease in 500 patients with angina pectoris and at least one area of 50% or greater reduction of luminal diameter in a major coronary artery were compared with respect to patients' age and coronary arterial pattern. The coronary arterial patterns were separated into right (360 patients), mixed (89 patients), and left (51 patients) systems, depending upon the blood supply to the inferior surface of the left ventricle. The following relationships were noted:
In patients with angina pectoris, the distribution and severity of coronary artery disease is similar from the third to eighth decade.
Coronary arterial stenoses of 50‐70% or greater reduction of luminal diameter involve most frequently the proximal portion of the major vessels. Coronary artery disease is multivessel in nature in 80% of cases. In single vessel disease the left anterior descending artery is involved most frequently.
The left main coronary artery is moderately to severely obstructed less frequently in individuals with left (2%) as compared to right (8%) and mixed (10%) systems. Otherwise, the distribution of coronary artery disease is similar in right, mixed, and left systems.
Coronary artery disease is a diffuse rather than a focal process. As demonstrated by coronary arteriography, patients with coronary artery disease have smaller vessels throughout the arterial tree as compared with individuals free of evident coronary atherosclerosis.
Low‐cost comprehensive data system for cardiac patients
Authors: Melendez Libardo J. , Macdonald A. Craig 
Published: March 2007

AbstractFunctional systems to collect, store and retrieve clinical, hemodynamic, and angiographic information are needed to serve clinical research and quality control in the cardiac laboratory. Computers are ideally suited for this application, but high investment and maintenance costs are a barrier for their wider use.A low‐cost data processing and procedure reporting system was developed using a programmable calculator, a floppy disk drive, and a printer. Files have been started on 750 consecutive adult patients undergoing cardiac catheterization and angiography. Each file contains a clinical profile (CP), angiographic interpretation (Al), and hemodynamic data. CP and Al are coded according to a data base definition appropriate for patient care (procedure report) and research analysis. Data input is simplified by the use of multiple‐choice forms and prompts appearing on the calculator alphanumeric display. One floppy disk may hold 400 patient files. Immediate access to stored information for cross reference, computations, and statistical work is possible in all patients, a patient category, or an individual case. Stored items may be retrieved in coded form for analysis or translated into sentences to generate a multiple‐copy procedure report. Follow‐up information may be subsequently added to the patient file. Operation requires minimal training and little expertise in computer technology.
Fistulous communication between the left coronary artery and main pulmonary artery: A thirteen‐year follow‐up
Authors: Francis Charles K. , Sacheti Chandra K. , Cohen Robert B. 
Published: March 2007

AbstractA patient with a fistula producing a 2:1 left‐to‐right shunt between the coronary arteries and pulmonary artery followed for 13 years is described. The patient remained asymptomatic and without significant electrocardiographic, hemodynamic, or angiographic changes. Large collateral vessels were demonstrated on initial and repeat angiographic studies. This case illustrates the natural history of coronary artery to pulmonary artery shunts and suggests that surgery may not be necessary, even in the presence of a very large communication.
Demonstration of an inadvertently created aorto‐coronary venous anastomosis: Evidence against the clinical effectiveness of retrograde coronary venous perfusion
Authors: Klinke W. Peter , Pepine Carl J. , Conti C. Richard 
Published: March 2007

AbstractArterialization of the coronary venous system has been suggested as a means of myocardial perfusion. We recently studied a patient with a saphenous vein aorto‐coronary venous bypass graft created inadvertently during surgery intended to bypass the anterior descending artery. We selectively injected contrast into this graft during balloon occlusion of the coronary sinus both before and after sublingual nitroglycerin. No arterial visualization was demonstrated from the vein and no evidence to suggest perfusion of the myocardium was found.
Anomalous origin of the right coronary artery from the pulmonary artery with large left‐to‐right shunt (anomalous right coronary artery)
Authors: Bermudez Gustavo A. , Abdelnur Roberto , Midell Allen I. , Replogle Robert 
Published: March 2007

AbstractA coronary arteriovenous fistula was diagnosed in a 20‐year‐old white male because of a continuous murmur atypically located along the left sternal border. Cardiac catheterization revealed a large left‐to‐right shunt, and selective coronary arteriography established the precise anatomic diagnosis. The patient was treated successfully by surgical reimplantation of the anomalous coronary artery into the aorta and ligation of its origin at the pulmonary artery. The embryological and clinical features of this anomaly are discussed, and mechanisms for its production are suggested. Attention is called to our observation of an apparent male sex predilection of this anomaly from review of the literature, in addition to the present patient. This is apparently the fourth patient with this anomaly whose condition was diagnosed antemortem by selective coronary arteriography and the fourth to have been treated by aortocoronary anastomosis providing an additive supply for both the present and the future. This is also the second case in the literature to have the transplanted right anomalous coronary artery demonstrated by selective coronary arteriography. It is likely that, with increasing use of selective coronary arteriography in the diagnostic work‐up of cardiac patients, more cases will be discovered and treated surgically.
Catheter tip entrapment with avulsion of tip: A potential complication of percutaneous transfemoral catheterization through aortofemoral bypass grafts
Authors: Lipoff Jay I. , Killam Horace A. W. 
Published: March 2007

AbstractA search of the literature revealed only one report [4] of catheter tip entrapment during percutaneous transfemoral catheterization in a patient with an aortofemoral bypass graft. We present another case.
Percutaneous left heart catheterization and coronary arteriography using a femoral artery sheath
Authors: Hillis L. David 
Published: March 2007

AbstractPercutaneous left heart catheterization and coronary arteriography with a standard angiographic catheter introduced through a femoral artery sheath has been performed in over 200 patients during the past 12 months. The use of the sheath for catheter introduction and manipulation offers several advantages, including the capability of monitoring two arterial pressures with only one arterial puncture, the minimization of time in which the guidewire is intravascular, the capability of using all types of catheters from a femoral artery percutaneous approach, and, most importantly, the complete elimination of patient discomfort during catheter changes. The disadvantages of the sheath technique are relatively minor. Thus, percutaneous left heart catheterization and coronary arteriography through a femoral artery sheath can be performed safely and with relatively little trauma to the femoral artery.