ISSN:0098-6569    

DOI:10.1002/ccd.1810010202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810010203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractA computer‐based quantitative angiography system for the acquisition and analysis of ventriculographic data has been developed. In addition to the apparatus normally required for angiography and left ventricular pressure recording, a digitizing tablet, PDP 11/20 mini computer, and TV monitor with a hard‐copy device is employed. Four modes of operation are currently in use: data acquisition, analysis, mini cine, and data tape editor. Data acquisition facilitates forming a magnetic tape record of the digitized pressure, timing, and event identification, together with anywhere from 4 to 100 digitized LV contours. A number of error checks and feedbacks are incorporated to provide some measure of quality control. In the event an error is written onto the magnetic tape record, the data tape editor can be used to review the record and correct most errors. Analysis of the generated data tape consists of several options which include: pump function, muscle function, pressure derived Indices of contractility and systolic time intervals, and contour pattern recognition which is still under development. If the complete analysis option is chosen, a summary of the analysis, referred to as the quick‐sight list, is also presented. The so called mini cine option employs a separate and independent acquisition‐analysis program. This requires only the end‐diastolic (with a segment of wall) and end‐systolic contours (without pressure data) to extract the most essential parameters (EDV, EF, CI, HR, and wall mass). As a result of the relative straightforward processing and inherent simplicity, the mini cine option is most frequently used.This system has done much to reduce the time required for analysis of angiographic data, while at the same time maintaining and even improving the quality of the results. Other less tangible benefits include: the possibility to build a readily accessible library of patient data files facilitating a posteriori studies, precise and uniform definition of the rules to input and analyze data, and finally providing a useful step towards fully automatic ventriculographic

ISSN:0098-6569    

DOI:10.1002/ccd.1810010204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractIn 51 (1.2%) of 4,250 patients studied by selective coronary arteriography, one or more major elements of the coronary arterial system originated from the sinuses of Valsalva in an ectopic manner. The majority of variations involved the left coronary artery. The majority of ectopic ostia were located in the right sinus of Valsalva. Failure to recognize variations in coronary arterial origin can prolong arteriography procedures and lead to errors in interpretation of coronary artery anatomy and pathology. It is concluded from this experience that the incidence and location of major variations in coronary arterial origin are relatively predictable. The data are useful in expediting coronary arteriography procedures and thus improving patient care.

ISSN:0098-6569    

DOI:10.1002/ccd.1810010205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractCine coronary arteriograms of 121 patients with normal coronary arteriograms with and without associated valvular or myocardial disease were reviewed to describe normal coronary artery anatomy and the distribution of potentially graftable vessels. Coronary arterio grams were divided into right, mixed, and left interior emphasis systems, depending upon the blood supply to the inferior surface of the left ventricle. Whether a coronary artery at its origin was less than 50%, between 50–70%, or greater than 70% of the left anterior descending coronary artery (LAD) at its origin was described in a simple lettering and numbering code to allow easy comparison. The diameter of the LAD at its origin averaged 4.2 mm. All vessels greater than 70% of the LAD were clearly graftable. The frequency (in percent) with which that vessel was greater than 70% of the LAD in right, mixed, and left systems, respectively, was as follows:This simple method of classification is recommended to provide more accurate comparison in published series and to assist the coronary arteriographer in his interpretation

ISSN:0098-6569    

DOI:10.1002/ccd.1810010206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractThree incidents of asymptomatic arterial thromboembolism associated with polyurethane pigtail catheters occurred during 1,417 cases of left ventricular angiocardiography. No similar incident occurred with polyethylene pigtail or (dacron) Eppendorf and Gensini (style) catheters. In vitro comparison of hydraulic characteristics of polyurethane (Cordis) and polyethylene (Cook) pigtail catheters showed higher flow‐pressure transmission through the tip of the Cordis polyurethane catheter favoring dislodgment of any existing clot. The problem of thrombogencity of polyethylene compared with polyurethane remains unsettled. Our experience with polyurethane pigtail catheters has resulted in limitation of their use in our laborator

ISSN:0098-6569    

DOI:10.1002/ccd.1810010207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810010208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810010209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractBalloon atrial septostomy is usually ineffective if the atrial septum is thickened. A technique for incising the atrial septum is described. A no. 6 French catheter was modified to enclose a tiny surgical blade. The distal end of the blade was pivoted to the catheter tip, and the proximal end was attached to a guide wire in the catheter lumen. Advancing the guide wire protruded the blade through a slit in the long axis of the tip of the catheter. Atrial septostomy was performed in five newborn lambs in vivo and in adult dog hearts and human hearts in vitro by advancing the catheter tip across the atrial septum with the blade retracted and withdrawing it to the right atrium with the blade extended. Eight to 12 mm lacerations of the atrial septum were produced and could be extended by subsequent balloon septostomy. The technique may be useful when balloon septostomy has been ineffective.

ISSN:0098-6569    

DOI:10.1002/ccd.1810010210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY

摘要:

AbstractAn additional angiographic sign for determining coronary artery dominance is proposed. This sign is based on the anatomic pattern of the infraventricular branches in the left anterior oblique view. It is especially helpful in patients in whom the right coronary and/or left circumflex coronary arteries are completely occluded and distal vessels are filled via collaterals.

ISSN:0098-6569    

DOI:10.1002/ccd.1810010211

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1975

数据来源: WILEY