bluuebunny/crossref_metadata_2025_split huggingface dataset:
Significance of elevated MB creatine kinase in patients after cardiac catheterization
Authors: Rosenblum Andrew M. , Ludbrook Philip A. , Jaffe Allan S. 
Published: March 2007

AbstractTo clarify the etiology of elevations in plasma MB creatine kinase (CK) in patients after cardiac catheterization, we studied 32 consecutive patients undergoing cardiac catheterization and coronary arteriography. Total CK and MB CK were within the normal range in all patients prior to catheterization. Total CK activity rose from a mean of 61.46 ± 33.8 IU/1 (SD) to 141 ± 105 in the first sample after catheterization (p <.005) and 121.6 ± 92.4 in the second catheterization sample (p <.0005). The MB CK activity also rose from a mean of 3.2 ± 1.6 IU/1 prior to catheterization to a maximum value of 5.0 ± 2.9. The mean increase in MB CK, though statistically significant (p <.005), was only 1.8 IU/1. Only one patient's value for MB CK rose to outside of the normal range (>12) likely due to cardiac injury. Thus, our data document that marked elevations in MB CK after cardiac catheterization are unusual. They likely represent cardiac muscle injury rather than MB CK released due to skeletal muscle injury induced by the catheterization itself.
Subclavian artery to internal jugular vein fistula following percutaneous internal jugular vein catheterization
Authors: Merino‐Angulo J. , Cortazar J. L. , Saez‐Garmendia F. , Montejo M. 
Published: March 2007

AbstractThe percutaneous internal jugular vein approach is now a commonly performed procedure for central venous catheterization. Iatrogenic arteriovenous fistulae are a very infrequent complication. We report an asymptomatic subclavian artery to internal jugular vein fistula following two percutaneous internal jugular vein catheterization attempts.
Complete heart block during cardiac catheterization in a normal individual
Authors: Baird Charles L. , Borst Matthew P. , Maxfield Donna L. 
Published: March 2007

AbstractA 44‐year‐old white male who developed third‐degree heart block during cardiac catheterization is presented. Right heart catheterization precipitated bifascicular block, right bundle branch block with left posterior hemiblock, and resulted in thirddegree heart block during the left heart procedure. It is recommended that multiple electrocardiographic lead monitoring be considered during cardiac catheterization in order to recognize more easily high‐risk conduction disturbances, ie a bifascicular block pattern with frontal plane axis shifts.
Modification of cradle angiographic tables to more easily obtain axial coronary views
Authors: Vetrovec George W. , Strash Alfred M. 
Published: March 2007

AbstractWith greater utilization of angled coronary views for better elucidation of coronary anatomy, many laboratories are still limited by the rotating cradle systems which make angulation for these views somewhat difficult. The following report describes a simple, inexpensive way to modify existing cradle structures to accommodate easy cranial angulation.
Temporal pattern of regional left ventricular wall motion in patients with segmental early relaxation
Authors: Sabbah Hani N. , Khaja Fareed , Brymer James F. , Stein Paul D. 
Published: March 2007

AbstractThe purpose of this investigation was to describe the temporal pattern of regional left ventricular (LV) wall motion in patients with segmental early relaxation (SER). Segmental early relaxation was demonstrated angiographically in seven patients undergoing diagnostic cardiac catheterization because of chest pain. In all patients, early relaxation of only the anterolateral wall was observed. The temporal pattern of regional wall motion was assessed from ventriculograms, obtained in the right anterior oblique projection, by measuring the lengths of the anterolateral minor axis chord and the corresponding diaphragmatic minor axis chord. The onset of lengthening of the anterolateral chord preceded that of the diaphragmatic chord by 110 ± 10 msec. Maximal shortening of the anterolateral chord during systole was 43 ± 4% and was coincident with a 32 ± 4% shortening of the diaphragmatic chord. During early relaxation, shortening of the anterolateral chord diminished to 17 ± 4% (P <.01); and was coincident with a 35 ± 4% shortening of the diaphragmatic chord (P <.05). Early relaxation of the anterolateral wall was followed by a transient augmentation of shortening of the anterolateral chord to 29 ± 3% (P <.001), whereas shortening of the diaphragmatic chord diminished to 32 ± 4%. Subsequently both chords returned to their initial end‐diastolic lengths. These preliminary observations indicate that early lengthening of the anterolateral segment is followed by a transient rebound of shortening which was only present in the segment that manifested early relaxation.
The thermodilution technique in on‐line computation of the left ventricular volumes on anaesthetized dogs
Authors: Kettunen Raimo 
Published: March 2007

AbstractThe thermal dilution technique and its suitability for automatic computation of left ventricular volumes were evaluated on 28 anaesthetized dogs. The end‐diastolic volume (EDV) was computed from ventricular washout curves in two ways, first utilizing the ratio between the indicator amount and its peak concentration (first ejection method); and secondly the ratio between stroke volume and ejection fraction with the latter obtained by subtracting the residual fraction from 1.0. The residual fraction was determined as the mean of ratios between successive steps of four ventricular ejections on the downslope of the curve (downslope method). The linear correlation coefficient between the EDV determinations (n = 366) was 0.926, and slope y = 1.14 × + 0.5 ml with 4.6 ml as standard error of estimate. The first ejection method gave on average 15% higher EDV values than the downslope method. When heart rate was increased by pacing from 88 to 240/min, both methods showed a reduction of the EDV, but the downslope method to a greater degree. When after load was increased but heart rate decreased by phenylephrine, the first ejection method but not the downslope method indicated an increase in EDV. Otherwise, when pronounced tachy‐ or bradycardia were avoided, ventricular volumes yielded by the two methods were comparable. Indicator injection did not substantially affect ventricular pressure dynamics. The first ejection method seems to be a simple means for repeated measurements of EDV even in the case of diseased hearts.
Sarcoidosis, pulmonary hypertension, and acquired peripheral pulmonary artery stenosis
Authors: Mangla Arun , Fisher Jeffrey , Libby Daniel M. , Saddekni Souheil 
Published: March 2007

AbstractAn unusual case of a young woman with sarcoidosis and pulmonary hypertension who developed new bilateral continuous murmurs and was found to have peripheral pulmonary artery stenoses is reported. The patient has improved symptomatically, radiographically, and hemodynamically on steroid therapy.
Percutaneous perfusion of occluded coronary arteries with blood from the femoral artery: A dog study
Authors: Meier Bernhard , Gruentzig Andreas R. , Dekmezian Roupen H. , Brown Joe E. 
Published: March 2007

AbstractThe idea of perfusing the distal coronary artery with arterial blood during balloon dilatation was implemented in early experimental coronary angioplasty but then abandoned. We pursued this concept in an animal model using a specially designed roller pump. The pump delivers blood from a femoral artery catheter through the central lumen of a balloon catheter occluding a coronary artery. Perfusion of large proximally occluded coronary arteries for at least 60 min was possible in 8 of 11 heparinized dogs. Hemolysis occurring in the pump system due to the small catheter lumen proved a minor problem. For a limited period of time, occluded coronary arteries can be adequately perfused with arterial blood by this percutaneous system that is readily applicable in any catheterization laboratory. Its use is conceivable not only for temporary treatment of acute complications during angioplasty but also for prolonged balloon dilatations of spastic or thrombosed coronary arteries.
Improved success rate of percutaneous transluminal graft and coronary angioplasty with the EL gamal guiding catheter
Authors: El Gamal M. I. H. , Bonnier J. J. R. M. , Michels H. R. , Van Gelder L. M. 
Published: March 2007

AbstractIn the period between October 1980 and December 1982 we evaluated the outcome of percutaneous transluminal graft and coronary angioplasty when a Judkins type guiding catheter (J gc) was initially used, but the lesion could not be passed and a subsequent attempt was made with the El Gamal guiding catheter (EG gc). Seven of twelve attempts to dilate stenotic coronary artery bypass grafts failed. The EC gc was tried in six, five were successfully dilated; one failed.Our initial attempts to dilate a stenosed right coronary artery failed in 16 of 68 attempts. The EG gc was attempted in 14. We successfully dilated ten, two dissections required emergency coronary artery bypass grafting (CABG); two failed. Our initial attempts to dilate a left anterior descending artery stenosis failed in 14 of 109 attempts. Six lesions were passed when the EG gc was tried. Five were successfully dilated, and one acute dissection required emeregency CABG; eight failed. The EG gc is useful for transluminal angioplasty of stenosed aortocoronary bypass grafts. It increased the success rate of right coronary artery dilatation from 76–91%, but was of limited use in dilatation of left anterior descending lesions.
Pulmonary valve morphology after balloon dilatation of pulmonary valve stenosis
Authors: Benson L. N. , Smallhorn J. S. , Freedom R. M. , Trusler G. A. , Rowe R. D. 
Published: March 2007

AbstractPercutaneous balloon valvuloplasty (BV) for pulmonic valve stenosis (PS) is increasingly becoming a nonsurgical alternative in patient management [1–3]. However, the mechanism by which BV dilates the obstructive lesion has not been firmly established [4]. We have had the opportunity to examine the effects of BV in the setting of PS and present two illustrative cases documenting the morphology after BV of the stenotic bicuspid and tricuspid pulmonary valve.
Percutaneous transfemoral catheterization in aortic stenosis with a USCI sones catheter curve a type 1 (7540)
Authors: Chow Joseph S. F. , Wong Philip H. C. , Lee P. K. , Wang Rebecca Y. C. , Chen Walter W. C. 
Published: March 2007

AbstractWe report our experience with the use of a USCI Sones catheter curve A type 1 (7540) to cross the aortic valves of 45 patients with clinically signficant aortic stenosis. The technique was successful in all our patients with a fluoroscopic time of less than 3 min. A gradient of up to 200 mmHg across the aortic valve area was recorded, and the smallest valve area calculated was less than 0.2 cm2. The method obviated the need for a guidewire and satisfactory left ventriculograms were obtained. No major complication was observed. We conclude that the technique is a simple, rapid, and safe means of obtaining left ventricular hemodynamic and angiographic information in patients with aortic stenosis of various degrees of severity.
Electrocardiographic st‐t wave patterns, extent of coronary artery disease, and left ventricular performance following non‐q‐wave myocardial infarction
Authors: Gash Arnold K. , Warner Howard F. , Zadrozny John H. , Carabello Blase A. , Spann James F. 
Published: March 2007

AbstractSubendocardial, nontransmural, or non‐Q‐wave myocardial infarction (NQMI) carries a serious prognosis. Many previous studies of NQMI include only patients without new Q waves at the time of infarction. Since the site of transmural MI (by Q waves) has implications concerning extent of coronary disease (CAD) and left ventricular (LV) dysfunction, we wondered what the extent of CAD and LV dysfunction is among acute MI patients who have neither new nor old Q waves. Furthermore, we sought to determine whether ST‐T wave patterns or resting LV ejection fraction (EF), alone or combined, could separate NQMI patients with significant CAD from those with normal or nearly normal coronaries. Therefore, we retrospectively examined angiographic and electrocardiographic data in 55 symptomatic patients with NQMI.ST‐T wave patterns on admission were classified as either ischemic (transient ST elevation, persistent horizontal ST depression, or persistent deep T wave inversion) or nonspecific.Eleven patients (20%) had normal or nearly normal coronaries (N); ten patients (18%) had one, seven patients (13%) had two, and 19 patients (34%) had three vessel CAD; eight patients (15%) had left main (LM) disease. Six of the 11 N patients had ergonovine tests and all six were negative.Segmental LV wall motion abnormalities (WMA) were commonly observed; however, diffuse LVWMA were present only among patients with three vessel and LM disease. EF was below 0.50 in 48% of patients with three vessel or LM disease.Although ischemic ST‐T wave patterns were more common (P < 0.05) among patients with significant CAD than among N patients, neither the ST‐T wave pattern nor EF, alone or in combination, allowed confident separation of N patients from significant CAD patients.We conclude 1) A large proportion of NQMI patients have LM disease, three vessel disease, or normal or nearly normal coronaries. 2) Despite the absence of Q waves, LV dysfunction is common and the degree of LV impairment is worse among patients with more extensive CAD. 3) NQMI patients who may have normal or nearly normal coronaries cannot be reliably separated from NQMI patients with significant CAD on the basis of ST‐T wave patterns or resting LVEF. 4) Coronary angiography appears warranted to assess the extent of CAD in symptomatic NQMI patients.
Failure of percutaneous transluminal coronary angioplasty to stimulate platelet and prostaglandin activity
Authors: Stine Ronald A. , Magorien Raymond D. , Bush Charles A. , Kolibash Albert J. , Leier Carl V. , Fertel Richard H. , Brandt John , Unverferth Donald V. 
Published: March 2007

AbstractPlatelet function and prostaglandin activity were evaluated in nine patients with coronary artery disease undergoing percutaneous left anterior descending coronary artery angioplasty (PTCA) and compared to nine normal controls. Transcoronary measurements (arterial‐coronary sinus) of platelet counts, mean platelet volume, platelet factor 4 (PF4), beta thromboglobulin, thromboxane (B2), and 6‐keto‐PGF were made. When compared to normal controls, the patients with coronary artery disease had higher circulating baseline levels of PF4 in the coronary sinus. There was no transcardiac production of any factor at baseline or immediately after infusion of nitroglycerin or performance of PTCA. These results suggest that PTCA does not grossly alter arachidonic acid metabolism or platelet activity.
The radiographic appearance of arterial sheath kinking
Authors: Feit Alan , Sedlis Stephen , Khan Rahman , Reddy C. V. R. , El‐Sherif Nabil 
Published: March 2007

AbstractA case of arterial sheath kinking is reported. Radiographically, sheath kinking has some features which mimic sheath fracture. The radiographic appearance of sheath kinking is, however, distinctive and clearly separable from sheath fracture, the hallmark of which is extravasation of contrast at the fracture site.
Relief of pressure damping during coronary angioplasty: A device for creating side holes in ptca guiding catheters
Authors: Chua K. G. , Feldman Ted , Fromes Bernard 
Published: March 2007

AbstractPercutaneous coronary angioplasty guiding catheters occasionally wedge in the coronary orifice and obstruct blood flow, making completion of the balloon dilatation difficult. Side holes may be made in the catheter, but when created free‐hand may not be ideal. This report describes a device for creating side holes of small size, with uniform shape, and without rough edges. The disadvantages of dye extravasation and loss of strength in the catheter are minimized.
Coronary thrombolysis with urokinase infusion in acute myocardial infarction: Multicenter study in Japan
Authors: Kambara Hirofumi , Kawai Chuichi , Kammatsuse Katsuo , Sato Hikaru , Nobuyoshi Masakiyo , Chino Masao , Miwa Hiroshi , Uchida Yasumi , Kodama Kazuhisa , Mitsudo Kazuaki , Hayashi Takeo , Kajiwara Nagao , Sekiguchi Morie , Yasue Hirobumi 
Published: March 2007

AbstractThe efficacy of intracoronary administration of urokinase was evaluated in 514 patients with acute myocardial infarction (anterior, 296 patients; inferior, 195; lateral or posterior, 18; and anterior and inferior, five). The time between onset of chest pain and coronary arteriography was 0.5 to 81.0 hr with an average of 5.0 hr. Initial administration of nitrates resulted in recanalization of the coronaries in 9.3%. Subsequently, urokinase was infused into the coronary arteries, and coronary thrombolysis was successfully achieved in 66.8%. The success rate was low in a group with average infusion speed of more than 30,000 units/min or with a total dose of urokinase of 480,000 units or less. Complications, mainly arrhythmias, were present in 111 patients (33.2%) of the 334 who had successful thrombolysis and in 18 patients (10.8%) of the 166 with unsuccessful thrombolysis, but serious hemorrhage was rare and no fatal case was reported. Patients who had successful thrombolysis had less in‐hospital mortality than those who did not (6.3 vs 13.3%). Thus, coronary thrombolysis can be achieved effectively and relatively safely with a sufficient amount of intracoronary urokinase administration in acute myocardial infarction.
Acute anterior myocardial infarction complicated by mural thrombus and peripheral thromboembolism despite anticoagulation
Authors: Hwang Ming H. , Pacold Ivan , Loeb Henry S. 
Published: March 2007

AbstractA 43‐year‐old man had transmural anterior wall myocardial infarction complicated by hypotension and anterior‐apical aneurysmal formation. Despite continuous anticoagulation with heparin sodium (heparin) and warfarin sodium (coumadin), a large pedunculated left ventricular thrombus was formed. Four hours after uneventful left ventriculography, the patient experienced acute superior mesenteric embolism. An emergency mesenteric embolectomy and then left ventricular aneurysmectomy with clot evacuation were performed to save the bowel and to prevent further embolization.
A modified catheter system for retrograde left ventricular catheterization in aortic valve stenosis
Authors: Macdonald Robert G. , Feldman Robert L. , Pepine Carl J. 
Published: March 2007

AbstractConventional retrograde catheterization of the left ventricle using a single large catheter through severely stenotic aortic valves or prostheses has recognized difficulties. An alternative method is described. This method incorporates a coronary angioplasty guide catheter and coronary probing catheter attached to separate pressure transducers allowing simultaneous recording or aortic and LV pressures. This technique was used in seven patients with aortic stenosis in whom a conventional approach had failed. The movable probing catheter permits alterations of the catheter orientation and angulation while the guiding catheter stabilizes the system within the high velocity jet formed in the ascending aorta. This stabilization and the small size of the coronary probing catheter permit exploration of the valve surface and allow for insertion through a tilting disc valve or a severely stenotic valve without significantly altering hemodynamic function. In our laboratory this technique allowed us safely and reliably to assess aortic valve dynamics in each of the patients in whom the technique was attempted without resorting to either transseptal or direct left ventricular puncture.
Percutaneous left heart catheterization and coronary arteriography with and without an arterial sheath in patients without peripheral vascular disease
Authors: Ilia Reuben , Kimbiris Demetrios , Hakki A‐Hamid , Edlin Dale , Iskandrian Abdulmassih S. , Bemis Charles E. , Mintz Gary S. , Segal Bernard L. 
Published: March 2007

AbstractThe advantages and disadvantages of an arterial sheath to introduce catheters percutaneously through the femoral artery were prospectively studied in 184 consecutive patients without peripheral vascular disease undergoing routine diagnostic left heart catheterization and coronary arteriography. The arterial sheath was used randomly in 91 patients (sheath group) and the standard Seldinger technique in 93 (control group). There were no differences in age or sex between the two groups. All patients were studied with no premedication and had the same dose of lidocaine local anesthesia and heparin. No major complication occurred in any of the patients in the sheath or control groups. There were no significant differences in groin hematomas between the two groups. The patients in the control group more commonly had severe or moderately severe discomfort requiring additional local anesthesia. We conclude that the use of an arterial sheath percutaneously for introduction of catheters for left heart catheterization and coronary arteriography is advisable, particularly for anxious patients who have a low pain threshold.
Coronary atherosclerosis and the bypass grafts: Twenty‐year follow‐up of a case
Authors: Singh Ram N. 
Published: March 2007

AbstractA 44‐year‐old man was diagnosed as having coronary artery disease (CAD) by arteriography in 1964. In the subsequent 20 years, he has undergone seven angiographic studies and four coronary bypass operations. Close scrutiny of the clinical events and the angiographic studies in this patient offers important clues to the behavior of CAD and the bypass grafts, both internal mammary artery (IMA) and saphenous vein grafts (SVGs).
Late recanalization at the site of failed percutaneous transluminal coronary angioplasty
Authors: Slack John D. , Pinkerton Cass A. , Vantassel James W. 
Published: March 2007

AbstractPercutaneous transluminal coronary angioplasty (PTCA) was performed unsuccessfully, resulting in disruption and near‐total closure of the proximal right coronary artery at the site of stenosis following balloon inflation. The artery could not be reopened in the catheterization laboratory despite intracoronary nitroglycerin, sublingual nifedipine, and multiple balloon inflations. Myocardial revascularization surgery was immediately performed with excellent graft flow. No apparent myocardial infarction resulted. Catheterization performed at one year showed normal left ventriculography, total occlusion of the bypass graft, and reopening and normalization of the right coronary artery at the site of PTCA‐induced occlusion. Possible mechanisms for this phenomenon and its clinical implications are discussed.