bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reproducibility of coronary arteriographic reading in the coronary artery surgery study (CASS)
Authors: Fisher Lloyd D. , Judkins Melvin P. , Lesperance Jacques , Cameron Airlie , Swaye Paul , Ryan Thomas , Maynard Charles , Bourassa Martial , Kennedy J. Ward , Gosselin Arthur , Kemp Harvey , Faxon David , Wexler Laura , Davis Kathryn B. 
Published: March 2007

AbstractEight hundred seventy arteriograms from the Coronary Artery Surgery Study (CASS) were independently read by readers at two different clinics to evaluate the reproducibility of the interpretation of coronary arteriograms. Among proximal segments, the interpretation of lesions of the left main coronary artery were the least reproducible, P < .02. When one angiographer reads a stenosis of 50% or more in the left main coronary artery, it is estimated that a second reader will report no lesion 18.6% of the time. In 94.7% of the films, the number of significantly (≥70% stenosis) diseased vessels was the same for both readers (72.1%) or differed by one vessel (22.6%). The reproducibility of interpretation of films of good or acceptable quality or completeness was better than the reproducibility of readings of arteriograms judged to be of poor quality or incomplete studies. The mean absolute difference between readings of the percent stenosis decreased over the time of the patient enroliment, 1975 to 1978. This may have resulted from major collaborative efforts made during the course of the study to improve the quality of angiography and to standardize the reading of the cine films.
Coronary artery catheter‐induced spasm
Authors: Lafia Paul , Dincer Bulent 
Published: March 2007

AbstractA patient developed a lesion in the proximal and mid right coronary artery during cardiac catheterization. Following the administration of nitroglycerin, repeat right coronary angiography showed a normal right coronary artery. Therefore, distal lesions associated with catheter‐induced spasm in the same coronary artery should not always be considered “fixed” lesions; but rather, they may be due to spasm.
Fever, chills, and hypotension following cardiac catheterization with single‐ and multiple‐use disposable catheters
Authors: Jacobson Jay A. , Schwartz Charles E. , Marshall Hiram W. , Conti Marlyn , Burke John P. 
Published: March 2007

AbstractRecognition of pyrogen reactions in patients studied with multiple‐use cardiac catheters led to recommendations regarding their cleaning and ultimately to the expensive practice of discarding catheters after a single use. Primarily because of cost considerations, our laboratory continued to clean and reuse catheters through 1981. This afforded an opportunity to assess the endemic rate of adverse reactions associated with this practice. We prospectively evaluated 341 patients who were studied with single‐use or multiple‐use catheters. The overall incidence of adverse reactions was: hypotension 27%, fever 3%, chills 3%, and all three 0.6%. There were no statistically significant increases in these reactions associated with the reuse of catheters. Bacterial infection did not appear responsible for these reactions, and it is possible that they were due to angiographic dye. We conclude that careful cleaning and reuse of catheters does not create an obvious increase in the risk of infection, and it appears to play a minor role, if any, in the development of other adverse reactions.
Subclavian artery to pulmonary circulation fistulas
Authors: Auge J. M. , Bosch X. , Crexells C. , Oriol A. 
Published: March 2007

AbstractA case of right subclavian artery to pulmonary circulation fistula is described. A review of the literature surprisingly reveals that until December 1981 only three other cases involving the subclavian artery have been reported. Only one of these and the case described here seem likely to be of congenital origin.
Primary pulmonary hypertension: M‐mode and two‐dimensional echocardiographic findings
Authors: Berger Bruce C. , Walinsky Paul , Carey Phyllis 
Published: March 2007

AbstractIn two young men subsequently found to have primary pulmonary hypertension, echocardiographic findings suggested an atrial septal defect. Additionally, contrast echocardiography demonstrated right‐to‐left shunting at the atrial level. Cardiac catheterization demonstrated severe pulmonary hypertension with patent foramen ovale. Thus, primary pulmonary hypertension may result in findings similar to atrial septal defect on echocardiography, particularly if a foramen ovale is present.
Assessment of the magnitude of aortic regurgitation by dye injection into the descending aorta
Authors: Haneda Takashi , Shirato Kunio , Ohe Masatoshi , Kanazawa Masaharu , Ishikawa Ken , Hashiguchi Ryoichi , Kanda Hitoshi , Koiwa Yoshiro , Takishima Tamotsu 
Published: March 2007

AbstractA technique simpler than the angiographic method for estimating aortic regurgitant volume was tried with 31 patients with aortic insufficiency. During cardiac catheterization, we injected dye into the descending aorta while recording the dye dilution curve in the left ear. The distance between the aortic arch and the tip of the catheter at the lowest point from which the injected dye could be detected in the left ear was rated in terms of the number of corresponding vertebral bodies. This “distance score” closely correlated with the regurgitant stroke volume and with the fraction to total stroke volume, which were measured by angiocardiography (r = 0.927, p < 0.001; and r = 0.900, p < 0.001, respectively). The correlation coefficients of the aortographic grade to those parameters were not as high as they were in the relationship of the score to the same parameters. Therefore, these results indicate that the “distance score” is a practical method for assessing the magnitude of aortic regurgitant volume.
Maximal postextrasystolic potentiation following multiple extrasystoles: A simple means of myocardial assessment
Authors: Cragg Andrew , Einzig Stanley , Rholl Kenneth , Rysavy Joseph , Castaneda Wilfrido , Amplatz Kurt 
Published: March 2007

AbstractTo obtain consistent, reproducible postextrasytolic potentiation (PESP), a single closely coupled extrasystole (ES) must be introduced using tranvenous pacing. We hypothesized that multiple ES (spontaneous or catheter induced) produce maximal PESP at all coupling intervals (CI). Differences in PESP between single and double ES were assessed in dogs at varying CI by two different methods [systolic time intervals‐PEP/LVET, and endocardial markers‐ejection fraction (EF)]. Single ES produced variable decreases in PEP/LVET (−8.6 ± 2.7% (SE) to −22.9 ± 4.0%) depending on the CI duration. Double ES produced maximal decreases (−26.0 ± 1.2%) at all CI. A similar relationship was noted for EF following single ES (8.6 ± 2.7% to 43.0 ± 4.0%) and double ES (42.9 ± 1.3%). Double ES produced maximal PESP at all CI. This finding may allow simple myocardial assessment during routine left ventricular catheterization without simultaneous right ventricular catheterization.
Comparison between the gorlin formula and a simplified formula to measure the severity of pulmonic stenosis
Authors: Hare Thomas W. , Hakki A‐Hamid , Iskandrian Abdulmassih S. 
Published: March 2007

AbstractIn a previous study we showed that the Gorlin formula for measuring the valve areas in patients with stenotic mitral or aortic valves can be simplified without loss of accuracy. The simplified formula states that the valve area is equal to cardiac output (liters/min) divided by the square root of the pressure gradient across the valve. In this study we compare the Gorlin formula and the simplified formula in measuring the valve areas in 12 patients with congenital pulmonic stenosis. There was an excellent correlation between the two methods (r = 0.98, y = 0.07 + 1.16x, P < 0.001). Therefore the simplified formula can be used in measuring the severity of pulmonic stenosis. This method is simpler and easier to memorize than the Gorlin formula.
Echocardiographic and hemodynamic findings in isolated symptomatic coarctation of the aorta in infancy
Authors: Mace Sharon E. , Hirschfeld Stephen S. , Riggs Thomas W. 
Published: March 2007

AbstractEchocardiographic findings and cardiac catheterization data were evaluated in 18 infants less than 1 year old in order to define anatomical or pathophysiological features that were associated with early cardiac decompensation. The infants could be divided into three groups: Group I (10 patients) had left ventricular dilatation and depressed contractility in response to the severe systemic hypertension. Group II (3 patients) had marked myocardial hypertrophy in response to the systemic hypertension. Group III (5 patients) were the youngest patients and had findings of right ventricular volume overload and pulmonary hypertension. This study demonstrates that, in early infancy, the ventricular response to simple coarctation of the aorta is variable in infants in a state of cardiac decompensation. The different echocardiographic and hemodynamic findings may be a consequence of the lesion exerting its influence at various stages of the patients' intrauterine or postnatal life. In most patients, resection of the coarctation results in rapid normalization of the echocardiographic findings.
Transpulmonary artery correction of anomalous origin of the left coronary artery by saphenous vein graft
Authors: Fisher Jeffrey , McDonald Garth , Brinker Jeffrey , Neill Catherine A. , Donahoo James S. , Baughman Kenneth L. 
Published: March 2007

AbstractA transpulmonary saphenous vein graft was used to repair an anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA). Postoperative cardiac catheterization revealed correction of the previous systemic arterial to venous shunt and a patent intrapulmonary artery conduit. The patient has experienced substantial symptomatic and functional improvement from the operation despite development of mild pulmonary outflow obstruction. Saphenous vein transpulmonary artery correction for ALCAPA offers an alternative surgical approach and may be the procedure of choice when anatomy or prior surgery preclude the more standard modes of revascularization.
Angioplasty catheter communication mimicking coronary arterial dissection
Authors: Kern Morton J. , Sorensen Sherman G. , Petru Michael A. , Richards Kent L. 
Published: March 2007

AbstractWe report a case in which a sudden communication between the pressure and balloon inflation lumens of a percutaneous transluminal angioplasty (PTCA) catheter angiographically mimicked dissection of the coronary artery. This case illustrates a previously undescribed catheter artifact that must be differentiated from other complications of PTCA.
Regional left ventricular wall motion abnormalities in chronic volume overload
Authors: Donato Marisa Di , Barletta Giuseppe , Mori Fabio , Fantini Fabio 
Published: March 2007

AbstractComputer‐assisted analysis of left ventricular (LV) wall motion has been performed in 12 patients (pts) with chronic volume overload and in seven normal subjects. All pts were in sinus rhythm, without congestive heart failure and without coronary artery disease at selective coronary angiography; 30° right anterior oblique ventricculograms were employed in each case. Thirty‐six radiants were automatically traced and the percent shortening of each radiant was calculated using two different reference methods (fix and floating methods).In valvular heart disease (VHD) pts LV volumes were significantly increased, and ejection fraction and LV eccentricity were significantly reduced. LV eccentricity inversely correlated with LV volumes.VHD pts showed regional LV abnormalities. Inferoapical and anterior wall motion was significantly reduced (two‐sample t‐test P < 0.05) using the fix method. With this method a significant inverse correlation between percent shortening of the radiants correspondent to the inferoapical region and end‐diastolic and end‐systolic volumes was found; a significant direct correlation was found with LV systolic eccentricity. Ejection fraction directly correlated with the percent shortening of radiants correspondent to both the anterior and inferior regions.The role of LV “dynamic geometry” alterations as a possible cause for the observed regional LV wall motion abnormalities is emphasized.
Tunneled (“bridged”) left anterior descending coronary artery in a newborn without clinical or morphologic evidence of myocardial ischemia
Authors: Visscher Daniel W. , Miles Brian L. , Waller Bruce F. 
Published: March 2007

AbstractTunneled epicardial coronary arteries have been presumed congenital in origin, but morphologic or angiographic documentation of myocardial bridging at birth is lacking. This report describes a 42‐day‐old infant with a lengthy tunneled left anterior descending coronary artery observed at necropsy that produced no apparent clinical cardiac dysfunction during life despite sinus tachycardia. These observations support the concept that myocardial bridges may be congenital in origin, and suggest length of tunneling and tachycardia may not be adverse factors for myocardial bridges in infancy.
Bicuspid aortic valve morphology when associated with coarctation of the aorta
Authors: Folger Gordon M. , Stein Paul D. 
Published: March 2007

AbstractThirteen children and young adults with coarctation of the aorta as their principal cardiovascular abnormality, 11 with bicuspid aortic valves, were evaluated by orifice‐view aortography to evaluate their aortic valvular morphology. For comparison 30 individuals with aortic valvular deformities but without coarctation of the aorta were similarly studied. Two distinct forms of bicuspid valves could be identified characterized by either the appearance of gross inequality of size of the two valve leaflets or an appearance wherein each leaflet closely approximated the size of the other, thus equally bicuspid. Excepting two individuals with normal, tricuspid, aortic valves, all of the patients with coarctation of the aorta had equally bicuspid aortic valves which contrasted to the group without coarctation in which the unequally bicuspid type predominated. This difference in bicuspid aortic valve morphology associated with coarctation of the aorta suggests a different developmental process involving the aortic valve as opposed to the situation in individuals without coarctation.
Repair of an iatrogenic aortoatrial fistula
Authors: Ladowski Joseph S. , Hardesty Robert L. 
Published: March 2007

AbstractA patient with uncommon potential to contain the extraluminal path of an aortic perforation, due to adhesions from previous operation, survived perforation of the ascending aorta and creation of an aortoatrial fistula at cardiac catheterization. The method of repair is described and discussed herein.
Transcatheter laser dissolution of human atherosclerotic plaques: A model for testing catheters and techniques
Authors: Gessman Lawrence , Reno Charles , Maranhao Vladir 
Published: March 2007

AbstractWe constructed a model of the human arterial circulation that can be used to test laser angioplasty catheters and techniques on obstructed human coronary arteries under simulated physiologic conditions of blood pressure and flow. In this model system, a balloon‐tipped catheter with a central, 0.02‐cm light fiber was used to deliver 4 W of laser energy to two obstructed human cadaver coronary artery segments and four normal dog femoral artery segments. Flushing the catheter with saline during the lases minimized lateral thermal tissue damage. Channels were created in the obstructed arteries that were twice the diameter of the light fiber used to lase. One of four dog arteries perforated, underscoring the potential hazards of the procedure and the need for laser catheters that are flexible and capable of precise alignment.
The brachial artery method to peripheral transluminal angioplasty
Authors: Dorros Gerald 
Published: March 2007

AbstractThe brachial artery method to peripheral (percutaneous) transluminal angioplasty is described. A total of 232 angioplasties were attempted using the brachial and femoral artery techniques with a success achieved in 204 cases (88%): in 167 of 176 (95%) stenoses, and in 37 of 56 (66%) occlusions. 114 attempts were made via the brachial artery method with a success achieved in 109 (96%): in 98 of 102 (96%) stenoses, and in 11 of 12 (92%) occlusions. 68% of the attempts were made in the ileofemoral system with a success achieved in 73 cases (94%): in 66 of 70 (94%) stenoses, and 7 of 8 occlusions. All of the attempted renal, subclavian, and superficial femoral artery stenoses were sucessfully dilated. One local brachial artery complication was encountered. The brachial artery method to peripheral transluminal angioplasty is an acceptable and complementary alternative to the transfemoral technique.
Coronary artery dissection secondary to coronary arteriography: Case report and review
Authors: Feit Alan , Kahn Rahman , Chowdhry Imtiaz , Reddy C. V. R. , Piccone Vincent , Blanche Carlos , El‐Sherif Nabil 
Published: March 2007

AbstractA case of catheter‐induced proximal dissection of an angiographically normal left coronary artery is reported. Dissection was not associated with pressure damping and myocardial ischemia was delayed until 1 hour after dissection occurred. Prompt recognition of this entity is essential as emergency revascularization is the treatment of choice when significant amounts of myocardium are threatened.
Isolated anomaly of the left anterior descending coronary artery
Authors: Dalal J. J. , West R. O. , Parker J. O. 
Published: March 2007

AbstractAn isolated anomaly of the left anterior descending coronary artery arising from the right sinus of Valsalva is described. A review of the literature shows that isolated anomalies of this vessel are very rare. However, the inability to visualize this vessel from the left sinus of Valsalva warrants careful search of the right sinus.
Severe aortic‐valve stenosis unmasked by amateur running
Authors: Waller Bruce F. , George Kathryn T. , Olson John F. , King Alice D. 
Published: March 2007

AbstractThree men aged 35, 55, and 60 years had asymptomatic underlying aortic‐valve stenosis unmasked by amateur running or jogging. All three men underwent aorticvalve replacement and two of the three have resumed mild exercise programs. Congenially abnormal aortic valves were found in two of the three patients. Amateur exercise may uncover an underlying cardiovascular abnormality perhaps sooner than might be apparent without exercise.
Digital venous angiography in the diagnosis of pulmonary thromboembolism
Authors: Gutierrez Fernando R. , Biello Daniel , McKnight Robert C. 
Published: March 2007

AbstractTwenty‐five patients with the clinical suspicion of pulmonary thromboembolism underwent venous digital subtraction angiography (DSA) concurrently with selective conventional pulmonary angiography and the results were compared by two independent observers. Our conclusion is that venous DSA lacks adequate specificity and sensitivity for the diagnosis of pulmonary thromboembolism in subsegmental pulmonary arteries. Any benefit derived from this slightly less invasive technique is far outweighed by the decrease in technical detail when compared to the selective film screen method.
Radionuclide diagnosis of cerebrospino‐pericardial communication after ventriculoatrial catheter placement for hydrocephalus
Authors: Henry G. William , Perry J. Randolph , Stiles Alan D. , Lawson Edward A. , Long Walker A. 
Published: March 2007

AbstractA 1‐month‐old male child with a previously placed ventriculoatrial catheter presented with severe cardiorespiratory distress secondary to cardiac tamponade. A cerebrospino‐pericardial communication from right atrial perforation by the catheter was diagnosed quickly and easily by a radionuclide injection of the proximal shunt reservoir.
Prolonged coronary vasoconstrictor effect of ergonovine maleate
Authors: Kurnik Peter B. , Spadaro James J. , Nordlicht Scott M. , Tiefenbrunn Alan J. , Ludbrook Philip A. , Courtois Michael R. 
Published: March 2007

AbstractThe duration of the coronary artery vasoconstrictor effect of ergonovine maleate is an important clinical parameter that has not been clearly defined. Since ergonovine is generally administered in incremental, cumulative doses and since this agent may have potentially serious toxic effects related to its vasoconstrictor properties, knowledge of duration of this effect is crucial to its safe and efficacious use. We present clinical evidence of ergonovine‐induced coronary artery spasm recurring after pharmacologic relief of a first episode of ergonovine‐induced spasm. Recurrent spasm occurred 18 minutes after a cumulative dose of 0.15 mg ergonovine and 14 minutes after intravenous nitroglycerin was given to ameliorate the initial spasm. Therefore, clinical monitoring of patients after ergonovine administration should be designed to identify a possibly prolonged duration of vasoconstrictor effect of the drug. Sequential doses of ergonovine at intervals of ten minutes or less should be recognized as having cumulative effect. The duration of action of pharmacologic agents utilized to alleviate ergonovine‐induced coronary artery spasm should exceed the potential duration of action of ergonovine in order to minimize the possibility of late spasm.
Single coronary artery with the right coronary artery arising from the first septal perforator
Authors: Meyers David G. , McManus Bruce M. , McCall David , Walsh Richard A. , Quaife Merton A. 
Published: March 2007

AbstractA 50‐year‐old woman with chest pain and an exercise thallium‐201 scintigram positive for focal ischemia was found on coronary arteriography to have a heretofore unreported variant of single left coronary artery with the right coronary artery originating as a branch from the first septal perforator. Proximally, the aberrent vessel coursed through the ventricular septum at the level of the right ventricular outflow tract. A conus artery was absent and this is a possible basis for the focal basal ventricular ischemia and the patient's symptoms.
A simple technique for location of the coronary stenotic lesion in percutaneous transmural coronary angioplasty
Authors: Haraphongse Mant , Rottenfusser Judy , Rossall Richard E. 
Published: March 2007

AbstractWe have developed a technique (grid) for location of the stenotic coronary lesion in percutaneous transluminal coronary angioplasty (PTCA). It is simple, economical, and easy to use with no risk to the patient. Utilization of this technique provides for quick and accurate positioning of the balloon catheter in the coronary lesion during PTCA.
Simultaneous measurement of aortic and left ventricular pressures in aortic stenosis using a double lumen pigtail catheter
Authors: Stoebe Tom , Adicoff Arnold , Weir E. Kenneth , Chesler Elliot 
Published: March 2007

AbstractThis technical note describes a double lumen pigtail catheter that can facilitate measurement of the aortic valve gradient in patients with aortic stenosis. The catheter is passed retrograde into the left ventricle with the aid of a flexible guide wire. In two patients the measured gradient was not significantly different from that obtained using two systemic arterial catheters.