摘要:

AbstractThe cardiovascular effects of two nonionic contrast agents with low osmolality (iohexol and metrizamide) were compared with one standard ionic, high‐osmolality contrast agent (metrizoate) used for left ventricular (LV) angiography in patients with coronary heart disease. Metrizoate induced a marked elevation of LV end‐diastolic pressure and LV systolic pressure and an increase in cardiac output after a delay of a few minutes. All these changes were significantly less severe with iohexol and metrizamide. Hypotension occuring 30 sec after LV angiography was observed only with use of metrizoate. All agents increased heart rate, but the increase after metrizoate was significantly more pronounced and prolonged. The PQ and QT interval was prolonged only by metrizoate. The subjective symptoms were significantly more marked with metrizoate than with the two other agents. Thus the new nonionic contrast agent iohexol and metrizamide produced markedly less hemodynamic and electrocardiographic disturbance than the ionic agent metrizo

ISSN:0098-6569    

DOI:10.1002/ccd.1810140302

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

年代:1988

数据来源: WILEY

摘要:

AbstractThe effect of intracoronary papaverine administration on epicardial coronary arterial diameter was examined in 18 male patients. Coronary‐artery cineangiograms were acquired with a power injector before intervention, 20 sec after intracoronary saline (control), and 20 sec after administration of papaverine into either the left (12 mg) or right (8 mg) coronary artery. Absolute coronary arterial diameter of a normal‐appearing segment was quantified using a previously validated, fully automated digital edge detection program with an ADAC digital radiographic unit. Baseline coronary arterial diameter of 3.1 ± 0.8 mm did not significantly change after saline administration (3.1 ± 0.9 mm) but did significantly increase (p<.001) to 3.4 ± 0.9 mm after papaverine administration. No significant percent change in diameter occurred in either the left anterior descending (−.5 ± 1.7%), left circumflex (−.2 ± 1.1%), or right (−3.0 ± 3.8%) coronary arteries with saline, but significant (p<.001) increases occurred with papaverine (7.2 ± 4.1%, 7.0 ± 4.5%, 6.8 ± 2.7%, respectively). The response of 7 coronary arteries examined immediately proximal to a significant lesion was not significantly different from the response of the remaining 11 coronary arteries. In conclusion, intracoronary papaverine causes a significant increase in coronary arterial diameter. This has clinical implications for assessing coronary flow reserve with devices that de

ISSN:0098-6569    

DOI:10.1002/ccd.1810140303

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

年代:1988

数据来源: WILEY

摘要:

AbstractUnusually prolonged balloon inflations (PBI) during percutaneous transluminal coronary angioplasty (PTCA) have been utilized in 26 consecutive patients to establish adequate coronary perfusion after shorter inflation times resulted in severe residual stenosis (N = 15), early arterial closure (N = 5), or extensive dissection (N = 6). Inflations lasted 1.5 to 15 min and 23/27 stenoses were successfully dilated. The average reduction in stenosis was 67% (90%–33%). Chest pain occurred in 34% vs. 7% (P<0.01), and ST changes occurred during 66% vs. 57% (NS) of PBI vs. short inflation

ISSN:0098-6569    

DOI:10.1002/ccd.1810140304

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

年代:1988

数据来源: WILEY

摘要:

AbstractThromboembolic complications occurred during diagnostic coronary arteriography in three patients in spite of systemic heparinization. These mishaps were associated with the use of a nonionic contrast medium, which is known not to have a significant protective effect on coagulation pathways. If nonionic contrast media are to be used in angiographic studies of critical organs, meticulous technique is imperative, and adequate systemic heparinization is recommended.

ISSN:0098-6569    

DOI:10.1002/ccd.1810140305

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

年代:1988

数据来源: WILEY

摘要:

AbstractA case of percutaneous transluminal angioplasty (PTA) from the groin to a 7‐cm right brachial artery occlusion in a 41‐year‐old man, having previously undergone Sones coronary angiography 2 months earlier, is presented. The post‐PTA angiogram shows near‐normal reconstitution of the total obstruction, persisting after 6 months with complete loss of collateral circulation. In a case of total obstruction of the brachial artery, femoral PTA should be considered before resorting to surgical

ISSN:0098-6569    

DOI:10.1002/ccd.1810140306

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

年代:1988

数据来源: WILEY

摘要:

AbstractComplete resolution of a high‐grade left anterior descending (LAD) stenosis 6 months after revascularization with a left internal mammary artery (IMA) graft and the first reported case of spontaneous IMA graft spasm during repeat cardiac catheterization for continued atypical chest pain in the same patient are reported. Mechanisms involving regression of atherosclerosis and atypical spasm are briefly discusse

ISSN:0098-6569    

DOI:10.1002/ccd.1810140307

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

年代:1988

数据来源: WILEY

摘要:

AbstractTwo patients who underwent left internal mammary artery (IMA) anastomoses to the left anterior descending artery (LAD) developed sudden angina associated with anterior ischemic changes on EKG in the early postoperative period, one at 4 hr and the other at 3 days following operation. Digitalized arteriography via retrograde injection of the left brachial artery revealed the IMAs, which were partially obstructed because of looping and Kinking, although the anastomoses to the LAD were patent. Reoperation was successful in relieving obstruction by reducing these abnormalities and resulted in an uncomplicated postoperative course following the second operation. Discussion of the etiology, radiological technique of diagnosis, correction, and prevention of this cause of internal mammary graft failure is presented.

ISSN:0098-6569    

DOI:10.1002/ccd.1810140308

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

年代:1988

数据来源: WILEY

摘要:

AbstractA 17‐year‐old girl was seen with acute anterior myocardial infarction resulting in congestive heart failure. Clinical examination followed by detailed investigation revealed diffuse nonspecific aorto‐arteritis, with left coronary ostial stenosis, which is a very rare association. The relevant literature is rev

ISSN:0098-6569    

DOI:10.1002/ccd.1810140309

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

年代:1988

数据来源: WILEY

摘要:

AbstractThis report describes a patient with single coronary artery, in whom the right coronary artery originated from the distal left circumflex. However, this anomaly was not of clinical significance based on atypical nature of chest pain, negative thallium exercise test and absence of coronary obstruction.

ISSN:0098-6569    

DOI:10.1002/ccd.1810140310

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

年代:1988

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810140311

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

年代:1988

数据来源: WILEY