Search Results
Results 451 - 500 of 723
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Kitamura S - - 1989
The dynamic responses of a coronary artery and an internal mammary artery (IMA) graft to pharmacological intervention were examined by arteriography in 5 patients with variant angina who had undergone coronary artery bypass grafting with an in situ IMA to the left anterior descending coronary artery. Preoperative electrocardiographic findings included ...
Perkin G D - - 1989
The recognition of an association between trigeminal neuralgia and ipsilateral hemifacial spasm has been delayed by confusion over the nomenclature of the two conditions. Three patients are presented who had facial pain associated with hemifacial spasm. The findings on investigation of these patients, and an analysis of the literature, suggests ...
Goudevenos J - - 1989
A 60 year old man presented with unstable angina and electrocardiographic features suggestive of disease of the left anterior descending coronary artery. Angiography showed slight proximal narrowing in this artery with reduced density of contrast that suggested an associated thrombus. Repeat angiography after 24 hours of heparin administration showed the ...
Click R L - - 1989
The cause of hypotension after reversal of heparin by protamine has not been well defined. In this study we evaluated complement activation (C3a and C4a) by the heparin-protamine complex in 46 consecutive patients (40 received protamine sulfate to reverse heparin, and six did not) during and after coronary angiography. In ...
Tomoike H - - 1989
Pathophysiology and genesis of coronary artery spasm were examined in vivo and in vitro in Göttingen miniature pigs. Five of 36 consecutive pigs before endothelial denudation showed evidence of regional hyperconstriction after intracoronary administration of histamine (group 1). Histologic examination revealed intimal thickening along the spastic site. Because 5 pigs ...
Cowley M J - - 1989
To assess the mechanisms of unstable angina, the coronary angiographic studies in 69 patients with severe unstable angina (prolonged pain or pain at rest) and in 20 patients with stable angina were blindly reviewed to assess the coronary morphologic changes in these syndromes. Coronary angiography was performed an average of ...
Bertrand M E - - 1989
Among 868 patients with successful percutaneous transluminal coronary angioplasty (PTCA), 437 were restudied angiographically and had a provocative test with ergonovine during coronary angiography performed before and 6 months after the procedure. The relation between provoked coronary artery spasm and restenosis was studied and 4 groups of patients were analyzed. ...
Hirshfeld J W JW - - 1989
We studied the hemodynamic and electrocardiographic responses to left ventriculography and coronary arteriography with three angiographic contrast agents. Two were nonionic agents (ioversol 32% iodine, 60 patients, and iopamidol 37% iodine, 30 patients). The third was a conventional ionic agent (diatrizoate 37% iodine, 30 patients). Cardiovascular hemodynamics and the electrocardiogram ...
Matsumoto T - - 1989
The QRS axis was measured in 24 patients during ergonovine malate provocation test (EM test). Of 12 patients with significant spasm of the right coronary artery (RCA) and/or left circumflex artery (LCX), the QRS axis shifted to the right in 7 patients after the EM test (mean 8.2 degrees), and ...
Margolis J R - - 1989
During PTCA intracoronary (ic) nitroglycerin is used in our institution only in cases of suspected coronary artery spasm. In order to estimate the incidence of true spasm, records from 1400 consecutive PTCA procedures were retrospectively reviewed for use of ic nitroglycerin. For each of the 376 procedures where ic nitroglycerin ...
Kajihara H - - 1988
A 40 year-old male presented symptoms of angina pectoris for about nine years and expired with symptoms of unstable angina, changing pattern at the terminal stage. At autopsy, both right and left coronary arteries of the subepicardial region were grayish white and elastic hard. Histologically, inflammatory infiltration was localized in ...
Babbitt D G - - 1988
Coronary artery spasm unresponsive to intracoronary nitroglycerin was observed in eight patients undergoing percutaneous transluminal coronary angioplasty for unstable ischemic symptoms (unstable angina or recent nontransmural infarction, or both). All patients manifested eccentric lesions angiographically with the right coronary artery involved in four, circumflex artery in two and left anterior ...
Fujii H - - 1988
Left ventricular wall motion abnormalities during an attack of coronary spasm induced by hyperventilation were examined with use of two-dimensional echocardiography in 27 patients with variant angina. Transient abnormal wall motion (asynergy) confined to one coronary artery region was found in 18 of the 27 patients and transient abnormal motion ...
Okumura K - - 1988
Intracoronary injection of acetylcholine has been shown to induce coronary spasm in patients with variant angina. To examine its sensitivity and specificity, incremental doses of acetylcholine (20, 50 and 100 micrograms into the left coronary artery and 20 and 50 micrograms into the right coronary artery) were injected into the ...
van Damme-Lombaerts R - - 1988
A 16-year-old girl with primary oxalosis type I presented with progressive claudication soon after being treated with chronic intermittent hemodialysis. Arterial insufficiency of the lower limbs was confirmed clinically (purple discoloration of the skin and absence of arterial pulses) and with Doppler sonography. The arteriogram showed diffuse and symmetric narrowing ...
Seifert K B - - 1988
Prolonged arterial spasm as a complication of ergot-containing medications has been reported since antiquity. This article describes our experience with a patient who had severe bilateral arterial spasm in the upper extremities 6 days after the initiation of a regimen of dihydroergotamine and heparin for prophylaxis against deep venous thrombosis. ...
Zeeman B J - - 1988
The significance of resection length on patency rate, and the histopathology, of microsurgically repaired avulsed blood vessels was examined at 3 weeks in two groups of experimentally avulsed rabbit femoral arteries repaired by different surgeons and in a single series of avulsed and repaired veins. All veins were patent 3 ...
Lemmer J H JH - - 1988
Coronary artery spasm during the early postoperative period following cardiopulmonary bypass for coronary artery surgery can be an unrecognized cause of sudden, severe cardiopulmonary collapse. The literature regarding perioperative coronary artery spasm is reviewed, and methods of prevention, diagnosis, and treatment are suggested. Preoperative angina at rest appears to be ...
Hill J A - - 1988
Coronary artery spasm is reported to occur with exercise. In patients without severe coronary atherosclerosis, the evidence for exercise-induced coronary artery spasm is limited. Three patients with positive exercise tests but no severe coronary atherosclerosis are presented. Coronary artery spasm was provoked and verified by angiography in all three, but ...
Ferguson D W - - 1988
A 17-year-old boy had a 2-day prodrome of fever and mild sore throat followed by 2 episodes of severe anginal chest discomfort and substantial transient ST-segment elevations in the anterior leads of the electrocardiogram. A subsequent evaluation showed the 2 episodes were most likely coronary vasospasm complicating acute viral myocarditis.
Katsumoto K - - 1988
Aorto-coronary (A-C) bypass surgery was carried out in 15 cases of Prinzmetal's angina and effort angina with ST-elevation, commonly ascribed to coronary vasospasms. A-C bypass surgery is usually indicated for vasospastic angina when there are significant organic lesions of the coronary arteries. Fifty mg of verapamil was added to the ...
Hashizume H - - 1988
The effect of reperfusion on cardiac myofibrillar proteins in the irreversibly injured ischemic myocardium was studied in dogs. Ischemia of the myocardium was produced by complete occlusion of the left anterior descending coronary artery for 90 min (the group of 90I). Occlusion of the coronary artery was then released (reperfusion) ...
Tash R R - - 1988
Hemifacial spasm is a symptom complex comprising involuntary, painless spasms of the orbicularis muscle that may progress to involve all facial muscles. It is frequently the result of compression of the facial nerve at its root exit zone from the brain stem by vascular loops or aneurysms of the posterior ...
Cattan S - - 1988
The mechanism of coronary spasm is poorly understood. We report a case of coronary artery spasm in a cardiac transplant patient. Pharmacologic testing indicated denervation of the patient's heart. Therefore coronary artery spasm may occur despite cardiac denervation. This case demonstrates that intact autonomic nervous system and cardiac innervation are ...
Brook R H - - 1988
Two panels of doctors, one in the USA and one in the UK, were asked to indicate how appropriate they judged a series of possible indications for coronary angiography and coronary artery bypass graft (CABG) operations. "Appropriateness" was defined with respect to possible benefit to the patient and excluded considerations ...
Bennett J M JM Department of Cardiology, University of - - 1988
A case of spontaneous multivessel coronary artery spasm documented by coronary arteriography is reported. The patient was also resistant to sublingual nitrates and nifedipine and required intracoronary nitroglycerine to alleviate the spasm.
Yasuda T - - 1988
Localized thrombosis was produced in the left anterior descending (LAD) coronary artery of open chest dogs by constricting a segment so as to produce greater than 90% stenosis (reducing blood flow to 40 +/- 10% of baseline), and placing a thrombus in the segment immediately proximal to the stenosis by ...
Okumura K - - 1988
Multivessel coronary spasm has been described but its incidence in patients with variant angina still remains unclear. Thirty-three patients with variant angina were studied during coronary angiographic examination with selective intracoronary injection of acetylcholine (ACh). In all but three patients, the location of ischemia during attack was determined by the ...
Ambrose J A - - 1988
The coronary morphology of ischemia-related arteries in unstable angina and Q-wave acute myocardial infarction (AMI) has been described. An eccentric stenosis with overhanging edges or irregular borders (type II eccentric) was seen in most lesions less than 100% occluded and probably represented plaque disruption, nonocclusive thrombus or both. The coronary ...
Mason W - - 1988
Previous studies have demonstrated circulating immune complexes (CICs) in sera of 70% of Kawasaki syndrome (KS) patients but the pathogenic role of these complexes in the illness is unknown. Infusions of gamma-globulin (GG) have been shown recently to reduce the prevalence of coronary artery aneurysms in KS patients. One of ...
Takaoka K - - 1988
Acute myocardial infarction was precipitated by hyperventilation in a 65 year old man. His coronary arteriogram in the chronic phase showed almost normal coronary arteries. Injection of acetylcholine (50 micrograms) into the left coronary artery induced spasm of the circumflex artery with chest pain in association with ST-segment elevation in ...
Karim A H - - 1988
A 60-year-old man with an acute inferior-wall myocardial infarction was noted, on arteriography, to have an occluded distal right coronary artery. The vessel was reopened with intravenous tissue plasminogen activator; during resolution of the clot, spasm was observed arteriographically but was successfully treated with intracoronary nitroglycerin. Follow-up arteriography showed a ...
Nielsen J F - - 1988
In a 51-year-old man, coronary artery bypass surgery for severe angina pectoris was followed by protracted mediastinal infection. After recovery the patient had several haemoptyses. Angiography revealed aneurysm of a graft near its distal anastomosis. Upper left lobectomy and ligation of the graft were necessitated by bleeding from the aneurysm ...
Larsson H - - 1988
Blood and plasma viscosity was measured in eight patients with typical effort-induced angina pectoris who did not have coronary artery stenosis at angiography. The same variables were studied in 14 patients with angina pectoris and verified coronary artery disease that in most cases was extensive. Both groups of patients had ...
Rossi P A - - 1988
The cause of chest pain in patients with anomalous origin of the right coronary artery from the left sinus of Valsalva has not yet been elucidated. In the following case, this anomaly was demonstrated, upon angiography, in a patient with recurrent chest pain and a negative stress test; in addition, ...
Castelló R - - 1988
To define the clinical and angiographic features of the syndrome of spasm of angiographically normal coronary arteries, 77 patients with spasm and fixed angiographically normal coronary arteries, 77 patients with spasm and fixed coronary stenosis equal to or greater than 50% (group A) were compared with 35 patients with spasm ...
Pedersen F - - 1988
In a retrospective study of four patients with paroxysmal ventricular tachycardia (VT) induced by silent ischaemia (SI) one case was related to transmural SI secondary to coronary artery spasm and the other cases to subendocardial SI related to non-dynamic coronary artery stenosis. In one patient it was possible simultaneously to ...
Pijls N H - - 1988
A 39-year-old woman developed critical anginal attacks 2-7 days after abruptly stopping long-lasting excessive alcohol drinking. The coronary angiogram demonstrated spasms in the left anterior descending and the right coronary artery without signs of preexistent stenosis. In previous reports alcohol-related coronary spasm always followed ingestion of alcohol several hours before. ...
Bertrand M E - - 1987
Of 552 patients undergoing percutaneous transluminal coronary angioplasty 102 had coronary artery spasm superimposed on atherosclerotic narrowing. Coronary angioplasty was successful in 97 (95%). The patients were discharged on a regimen of nifedipine (40-60 mg/day). Seventy six patients were symptom free 6-8 months after the procedure. Restenosis was detected in ...
Starling M R - - 1987
To determine whether variables obtained from Fourier analysis of gated equilibrium radionuclide angiographic (RNA) images can detect and quantify changes in left-ventricular (LV) regional wall motion induced by transient ischemia, 11 chronically instrumented dogs were simultaneously studied with hemodynamic measurements and RNA during control, left circumflex (LCx) coronary artery occlusion, ...
Freedman D D - - 1987
The newer dihydropyridine calcium antagonists are structurally related to nifedipine, but may provide greater vascular selectivity and wider clinical utility. Five new dihydropyridines-nisoldipine, nicardipine, nimodipine, felodipine and nitrendipine-are reviewed with regard to their preclinical pharmacology, haemodynamic effects and clinical indications. Nisoldipine is a potent arterial vasodilator with minimal electrophysiological and ...
Yano H - - 1987
The relationship between inverted U wave in leads V5 and II and the location of myocardial ischemia was studied in 52 positive patients and in 50 negative patients with ergonovine provocation test. Development of a biphasic or negative U wave, or increased negativity of U wave (inverted U wave) was ...
Hoberg E - - 1987
Frequency-modulated Holter monitoring of leads CM5 and CC5 was performed before, during and after percutaneous transluminal coronary angioplasty (PTCA) in 16 patients with stenosis of the left anterior descending coronary artery, in 5 patients with stenosis of the left circumflex coronary artery, and in 5 patients with stenosis of the ...
Lunt D W - - 1987
Examination of the hearts of ten human drowning victims revealed smooth-muscle contraction banding within the media of the major coronary arteries of eight patients (80%), focal ventricular myocyte hypereosinophilia in eight patients (80%), and ventricular myocyte contraction banding in five patients (50%). These lesions suggest that drowning is associated with ...
Gutstein W H - - 1987
A study was conducted to determine if the small (resistance) vessels of the coronary circulation could undergo spasm comparable to that of the major conductance (epicardial) arteries which in the rat measure 275-300 micron in diameter. This information may be relevant to the growing evidence of ischemic myocardial disease without ...
Bohlmann B J - - 1987
Spasm of the near reflex is most often seen on a functional basis in young adults with underlying emotional problems. In particular, when convergence spasm is associated with miosis on attempted lateral gaze, a functional basis for the disorder should be suspected. Patients who experience spasm of the near reflex ...
Nakano T - - 1987
We encountered 2 patients with thyrotoxicosis accompanied at its onset by progressive angina. The ST segment was elevated in one patient and depressed in the other patient during the spontaneous attacks. Coronary arteriographic findings were normal during control, and spasm was induced by ergonovine. No patients had chest pain even ...
Tomoike H - - 1987
Effects of leukotriene (LT) C4 and LTD4 on coronary artery spasm in atherosclerotic miniature pigs were examined angiographically. Endothelial balloon denudation of the left circumflex coronary artery was performed in 15 Göttingen miniature pigs; 11 were fed a 2% cholesterol diet and four were fed a regular diet for 3 ...
Sarabu M R - - 1987
Two patients with early postoperative spasm of a left internal mammary artery bypass graft are described. To our knowledge, this entity has not been reported previously. Both patients were characterized by vasomotor collapse secondary to intractable spasm responsive only to local application of vasodilator agents. Although the mechanism of graft ...
Olsen N - - 1987
A selective review on the attack of Raynaud's phenomenon in primary Raynaud's phenomenon and vibration-induced white finger is presented with special reference to the location of the primary vasospasm, the nature of the dominant pathophysiological mechanism, and the anatomic location of the abnormal link in this mechanism. It is suggested ...
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