Search Results
Results 301 - 350 of 697
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Imamura M - - 1996
We present a rare case of coronary artery spasm during spinal anesthesia in a patient who had neither complications nor prior history of coronary artery disease. Some factors are involved in the occurrence of perioperative coronary artery spasm. Many cases of coronary artery spasm during general anesthesia, or general plus ...
Hilton T C - - 1996
A patient with severe medically refractory coronary artery spasm was treated successfully with coronary atherectomy of a mild (40%) left anterior descending artery stenosis. Before the procedure, the patient was dependent on intravenous nitroglycerin because of daily episodes of angina with ST-segment elevation despite receiving multiple combinations of antianginal therapies. ...
Kugiyama K - - 1996
BACKGROUND: Coronary spasm can be induced by acetylcholine, serotonin, ergonovine, or histamine, all of which cause vasodilation when the endothelium is intact by releasing nitric oxide (NO). Coronary spasm is promptly relieved by nitroglycerin, which vasodilates through its conversion to NO. It is thus possible that NO release may be ...
Lee S J - - 1996
We compared the basal coronary artery tone and the constrictive responses to acetylcholine (Ach) and ergonovine (Erg) among three groups of patients: 31 patients (group 1) with variant angina in whom spasm was provoked by low doses of acetylcholine (intracoronary 20 micrograms) or ergonovine (intravenous 50 micrograms); 35 patients (group ...
Campeau R J - - 1996
A 35-year-old woman with coronary risk factors presented with nonexertional atypical burning chest pain of 1 week's duration. A myocardial perfusion study with Tc-99m MIBI revealed a severe stress induced anteroseptal perfusion defect that completely reperfused on a subsequent resting Tc-99m MIBI study. Coronary angiography showed mild nonobstructive coronary artery ...
Bahadori B - - 1996
The present study assesses the extent of coronary artery disease in men with angina pectoris and definite signs of myocardial ischemia in relation to body mass index. Our results demonstrate that exercise-induced myocardial ischemia in the absence of coronary artery disease in men with angina pectoris is more (2.6-fold) frequent ...
Lafitte C - - 1996
A migrainous patient who experienced chest pain attributed to angina pectoris by coronary artery spasm during a migraine attack is reported. Previous reports have already mentioned the association of these two conditions and suggested that it might be the manifestation of a generalized vasospastic disorder. This new report offers an ...
Morita H - - 1996
OBJECTIVES: The purpose of the present study was to evaluate the feasibility of diagnosing vasospastic angina based on coronary artery tone as assessed by M-mode echocardiographic measurement of the dilation response of the left main coronary artery to nitroglycerin. BACKGROUND: The definite diagnosis of vasospastic angina is done by a ...
Harjai K J - - 1996
Ischemia is suspected to occur frequently in patients with HCM and may result from various mechanisms, for example decreased coronary flow reserve, disease of small intramuscular arteries, "inadequate' size of coronary arteries relative to hypertrophied myocardium, diminution of coronary flow during systole, compression of septal perforator arteries during systole, coronary ...
Koh K K - - 1996
Our purpose was to compare patients with diffuse three-vessel coronary artery spasm and other types of coronary artery spasm without significant organic stenosis, and to elucidate clinical characteristics and risk factors. Patients were divided into two groups: group I consisted of 26 patients showing other types of coronary artery spasm; ...
Park S J - - 1996
In patients with variant angina, previous data have been inconclusive as to whether basal coronary artery tone is elevated at the spastic and non-spastic sites. Thus, the purpose of this study was to assess the basal coronary artery tone and the responsiveness to acetylcholine (Ach) and ergonovine (Erg) in patients ...
Bauer J - - 1996
BACKGROUND AND OBJECTIVE: Although laser angioplasty has been demonstrated to be effective for the treatment of long, complex coronary arterial atherosclerotic stenoses, there is an associated risk of acute arterial spasm, dissection, and perforation as well as a significant restenosis rate. It has been postulated that the use of lasers ...
Montgomery W D - - 1996
OBJECTIVE: Postoperative graft spasm is a concern when arterial conduits are used because there may be insufficient arterial graft flow. Intraoperatively, vasodilators are used to increase flow and prevent spasm, but little is known about their duration of effectiveness. METHODS: To examine this we attached porcine gastroepiploic and internal thoracic ...
Okumura K - - 1996
OBJECTIVES: We examined the vasomotility of the entire epicardial coronary artery system in patients with and without coronary spastic angina. BACKGROUND: The coronary arteries of patients with variant angina are hyperreactive to diverse constrictor stimuli. It is unclear whether the abnormal responses to constrictive or dilative stimuli, or both, result ...
Cavadas P C - - 1996
Free flap transfer to the lower limb in chronic post-traumatic conditions is known to have a higher complication rate, with flap loss in up to 10% of cases, due mainly to the recipient vessels (Godina: Plast Reconstruct Surg 78:285-291, 1986]). The dissection of these vessels often leads to refractory spasm, ...
Cavadas P C - - 1996
Vascular spasm of recipient vessels can increase failure rates in free tissue transfer, especially in post-traumatic perivascular-injured vessels. To investigate the effect of freezing-induced spasmolysis of recipient vessels, an experimental model of perivascular injury was developed in the rat through previous dissection of the femoral artery and epigastric vein (6 ...
Chin K - - 1996
The voluntary hyperventilation (VHV) test is used in many clinical examinations. However, arterial hypoxemia following a clinical VHV test is not a well-studied phenomenon. We analyzed the arterial blood gases (ABGs) of 61 patients during a VHV test. The ABG were taken prior to (PaO2-Prior), immediately following (PaO2-Immediate), and 5 ...
Ketterer M W - - 1996
A number of psychosocial measures were tested as correlates of coronary artery disease (CAD) in 122 males with positive coronary angiograms and 56 males with no manifest history of atherosclerotic disease who were selected to approximate the patients' age and socio economic status. Only denial of depression as indexed by ...
Cavadas P C - - 1996
In vivo freezing of microarteries with liquid nitrogen is known to relieve spasm without inducing thrombosis. In the present study the patency rates of microanastomoses in pre- and postfrozen vessels were investigated in the rat model. Freezing of the femoral artery was done with ethyl chloride. The artery was frozen ...
Kugiyama K - - 1995
The aim of this study was to determine whether isolated coronary arteries from patients with variant angina show hyperreactivity and/or supersensitivity to acetylcholine in vitro. Coronary arterial rings were obtained at autopsy within 3 h after death from six coronary arteries having spasm in four patients with variant angina and ...
Mendis S - - 1995
This study examined the relationship between breath pentane and plasma lipid peroxide levels sampled simultaneously in patients with stable angina (n = 17), unstable angina (n = 23), and controls (n = 10). Plasma lipid peroxides were measured in venous blood as the adduct formed between thiobarbituric acid and malondialdehyde ...
Hoka S - - 1995
A case of coronary artery spasm during lumbar epidural anaesthesia prior to surgery is presented. Three paroxysmal episodes of ST segment elevation in lead II without changes in V5 developed concomitantly when the patient complained of chest discomfort. A denervation of the cardiac sympathetic nerve seems to be the primary ...
Tachibana K - - 1995
Vasospastic angina was observed in two sisters. The 52-year-old younger sister presented with rest angina at midnight and in the early morning. The coronary arteriogram showed no significant organic stenosis. Vasospasm to the left anterior descending and right coronary arteries was induced by the intracoronary administration of acetylcholine. The 57-year-old ...
Fricchione G L - - 1995
Enhanced external counterpulsation (EECP) is a noninvasive pantaloon device designed to increase coronary artery flow in the treatment of angina. This pilot study, conducted in 1992-1993, which used psychosocial testing pre- and posttreatment, yielded data suggesting that EECP is well tolerated psychosocially and produces improvement in the anginal syndrome. More ...
Chang R Y - - 1995
Acute colonic ischemia is the most common form of intestinal ischemia. Nonocclusive ischemic colitis contributes to some of these disorders. Heart disease, such as congestive heart failure, myocardial infarction, arrhythmias, aortic valve disease, and atherosclerotic cardiovascular disease, account for many of its risk factors. The majority of cases are associated ...
Fukai T - - 1995
OBJECTIVES: The role of endothelin-1 (ET-1) in the pathogenesis of coronary artery spasm is not well understood. We aimed to determine if ET-1 is involved in serotonin-induced coronary spasm in the swine model. METHODS: In 10 miniature pigs, a segment of the left anterior descending coronary artery was denuded and ...
Wong G Y - - 1995
BACKGROUND AND OBJECTIVES: A pancreatic cancer patient developing transient paraplegia compatible with spinal cord ischemia, following alcohol celiac plexus neurolysis, is described. METHODS: A 58-year-old man with metastatic pancreatic cancer underwent celiac (deep splanchnic) alcohol neurolysis for management of severe epigastric and midback pain. In spite of apparently adequate needle ...
Rasheed Q - - 1995
Little information is available regarding the in vivo composition of angina producing culprit atherosclerotic lesions in various anginal syndromes. In this study we used intracoronary ultrasound to determine the composition of culprit lesions in various subsets of anginal syndromes and correlated this composition with the patient's clinical presentation. One hundred ...
Perrone-Filardi P - - 1995
BACKGROUND: In patients with coronary artery disease, dysfunctional hypoperfused myocardium at rest may represent either necrotic or viable hibernating myocardium. The accuracy of inotropic stimulation in identifying hypoperfused, reversibly dysfunctional myocardium has not been extensively investigated. METHODS AND RESULTS: Eighteen patients with stable chronic coronary artery disease underwent, while off ...
Minato N - - 1995
We experienced a rare case of Marfan's syndrome with annulo-aortic ectasia, aortic regurgitation and Prinzmetal's variant angina. In a modified Bentall's operation (button technique), perioperative severe coronary artery spasm occurred in spite of the preventive use of nitroglycerin infusion, which resulted in profound ventricular fibrillation and subsequent chordal rupture of ...
Kobata H - - 1995
Hemifacial spasm (HFS), a hyperactive dysfunction of the facial nerve, is rarely seen in young people. Between 1984 and 1994, we treated 924 patients with HFS by microvascular decompression at our institution. Of these, 8 (0.9%) were younger than 30 years. In most of the older patients with HFS, the ...
Koh K K - - 1995
BACKGROUND: Coronary artery spasm readily occurs at sites of atheromatous plaque. Some lipid profiles are related to the genesis of coronary artery spasm. In Korean patients, it is frequently observed in grossly normal coronary arteries, in contrast to the situation in western patients, who frequently have coronary artery spasm superimposed ...
Amanullah A M - - 1995
Factors determining myocardial ischemia during adenosine-induced coronary vasodilation in patients with angina pectoris are not well defined. To evaluate the angiographic, scintigraphic, hemodynamic, and echocardiographic determinants of ST segment depression during adenosine infusion, 40 patients with angina pectoris underwent technetium-99m sestamibi single photon emission computed tomography and simultaneous two-dimensional echocardiography. ...
Fournier J A - - 1995
A 24-year-old man was found to have angiographically normal coronary arteries shortly after suffering blunt thoracic trauma. Selective ergonovine administration into the left coronary artery induced total occlusion of the left anterior descending branch and electrical alternans of the ST-segment. This case demonstrates coronary artery spasm as a possible mechanism ...
Dolezel S - - 1994
A fine non-compressing methacrylate ring was implanted on the ramus circumflexus (RC) in 13 dogs. After the animals survived 7-14 days, the distribution and the rate of the Wallerian degeneration was studied in coronary arteries and myocardium by means of the formaldehyde induced fluorescence (FIF) technique and the transmission electron ...
Kai H - - 1994
BACKGROUND: Atrial natriuretic peptide (ANP) has been shown to dilate the coronary artery. The aim of this study was to determine whether, in patients with effort angina pectoris, intracoronary infusion of ANP attenuates pacing-induced myocardial ischemia either by dilating the stenotic lesion in a large coronary artery or by dilating ...
Ito A - - 1994
BACKGROUND: The intracellular mechanism of coronary artery spasm is still unknown. The pathway mediated by protein kinase C (PKC) is an important intracellular process of various cellular responses, including vascular smooth muscle contraction. Thus, we examined the role of the PKC-mediated pathway in the pathogenesis of coronary artery spasm in ...
Hara K - - 1994
Percutaneous transluminal balloon dilation of an 8-month-old free graft of the gastroepiploic artery was followed by diffuse and profound graft spasm. Because free arterial grafts are more prone to spasm, suitable precautions, such as administration of calcium channel antagonists, should be taken before attempting any interventions on these vessels.
Hori M - - 1994
This study was undertaken to examine whether 5-amino-4-imidazolecarboxamide (AICA) riboside (acadesine), which augments adenosine release in ischemic myocardium, further attenuates ischemic injury after acute coronary microembolization. The left anterior descending coronary artery was cannulated and perfused with blood from the left carotid artery in 46 dogs, and coronary blood flow ...
Frantz R P - - 1994
Coronary artery spasm is a rarely reported condition after heart transplantation. We report a case of exercise-induced coronary artery spasm in a patient 1-year after orthotopic heart transplantation. Serial quantitative coronary angiography showed significant diffuse loss of luminal diameter. Provocative testing with intracoronary acetylcholine and intravenous methylergonovine maleate was performed ...
Kedem J - - 1994
To test the hypothesis that dopamine-stimulated work and myocardial O2 consumption (MVO2) in collateral-dependent myocardium would be reduced, Ameroid constrictors were implanted around the circumflex coronary artery (CFX) in nine dogs. Four weeks later, in an anesthetized open-chest preparation, segment length (ultrasonic dimension gauge) and force (miniature force transducer) were ...
Tecce M A - - 1994
The true incidence of sudden cardiac death (SCD) from coronary artery spasm is unknown. The following case involves SCD in a previously asymptomatic young man with reasonable evidence to implicate coronary artery spasm as a potential cause for his clinical event. Ergonovine provocation may be warranted in patients who present ...
Ferrante F - - 1994
The present study was designed to assess the influence of treatment with the calcium channel blocker darodipine (PY 108-068) on the morphology of pial and coronary arteries in spontaneously hypertensive rats (SHR). Twelve week male SHR were used in this study. One group was treated with a daily dose of ...
Koh K K - - 1994
A 55-year-old man demonstrated typical reflux esophagitis, not esophageal spasm, by esophageal manometry, although he demonstrated classic migraine, positive Raynaud's scan, and proven coronary artery spasm. He suffered from severe chest pain by medication of ergotamine tartrate. Ergot alkaloids should be avoided in patients with symptomatic coronary artery spasm.
Ballantyne E S - - 1994
The case is reported of a 60-year-old woman with left-sided trigeminal neuralgia, hemifacial spasm, and hypertension. Compression of the left trigeminal, facial, and vagus nerves by the anterior and posterior inferior cerebellar arteries and a persistent trigeminal artery variant were demonstrated by magnetic resonance angiography using a novel sequence. At ...
Núñez B D - - 1994
The purpose of the present study was to determine the maximal coronary flow reserve (CFR) before and after the administration of successive cocaine doses (0.1, 0.5, 3, and 7 mg/kg IV) for 2 minutes at 10-minute intervals in eight miniature swine. CFR was assessed by the administration of adenosine (0.03, ...
Nguyen T V - - 1994
Describes a technique for reconstructing the skeletal structure of coronary arteries from a succession of frames of a single-view cineangiogram. The authors use local features in each frame to determine correspondences of arterial segments in successive frames. They define a similarity measure in 2D image space as the change in ...
Kazumi T - - 1994
We report a 46-year-old man with familial hypercholesterolemia who simultaneously developed angina pectoris and left hemiplegia. Angiography revealed complete tapering occlusion of the right internal carotid artery and a 75% stenosis of the right coronary artery. In addition to hypercholesterolemia, his serum Lp(a) levels were very high, with a mean ...
Handa K - - 1993
We examined activities or levels of plasmin and thrombin inhibitors in essentially untreated patients with angiographically documented coronary artery spasm. The patients received the ergonovine malate provocation test and were classified into two groups: (a) those with significant coronary artery spasm that produced reduction of the internal luminal diameter of ...
Soo C S - - 1993
The authors report 4 Oriental cases of total occlusion of the left main coronary artery (LMCA) with differing presentations. The first patient had a twelve-year history of stable angina pectoris. The second patient had angina for a year, which became unstable two months prior to diagnosis. The third patient had ...
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