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Results 351 - 400 of 697
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Etsuda H - - 1993
Studies in pigs and dogs show that intimal injury is related to coronary artery spasm; it is not known whether intimal injury is related to coronary artery spasm in human beings. We examined intima at the site of coronary artery spasm by percutaneous transluminal coronary angioscopy in 10 of 13 ...
Pinto F J - - 1993
BACKGROUND: Intracoronary ultrasound (ICUS) has the ability to quantitatively evaluate vessel wall morphology and is well suited for serial studies of coronary artery disease regression and progression. However, the potential risk for catheter-induced endothelial damage and accelerated atherosclerosis in instrumented vessels is a concern. The acute effects as well as ...
Kirigaya H - - 1993
To examine the vasospastic activity of coronary arteries which have been subjected to previous balloon angioplasty, we conducted an acetylcholine provocative test at diagnostic catheterization in 147 consecutive patients. All patients underwent successful elective angioplasty and had follow-up angiography 1 to 6 months after the procedure. Sixty-two patients had a ...
Sambuceti G - - 1993
The behavior of myocardial blood flow (MBF) regulation in territories supplied by angiographically normal vessels of patients with coronary artery disease (CAD) has been poorly investigated. Resting MBF and coronary reserve were evaluated in 32 patients with stable angina, no previous myocardial infarction, and isolated left anterior descending or left ...
Peterson H A - - 1993
Premature physeal arrest may occur after various insults to the physis. Its association with diaphyseal fracture without obvious physeal damage is well known, but the cause is obscure. The case reported documents premature closure of the distal tibial physis of an infant after a temporary but significant episode of vascular ...
Kuga T - - 1993
OBJECTIVES: This study was conducted to examine whether basal coronary artery tone is elevated at the spastic site in patients with variant angina and to determine the significance of basal artery tone in predicting provocation of coronary artery spasm. BACKGROUND: Previous data have been conflicting on whether basal coronary artery ...
Piasecki C K - - 1993
While transilluminating guinea pig gastric wall, we noticed foci of irregular compression of submucosal veins and arteries, featuring parallel bands across arteries, with complete cessation of blood flow, mucosal pallor, and shrinkage of the area. Other features demonstrated that this was not due to artifactual pressure. We attribute it to ...
Schreiner W - - 1993
Arterial branchings closely fulfill several "bifurcation rules" which are deemed to optimize blood flow. The question is whether these local criteria in conjunction with a general optimization principle can explain the overall structure of an arterial tree. We present a model of an arterial vascular tree which is grown on ...
Miwa K - - 1993
Five patients with variant angina showed alternating ST-segment elevation and contralateral ST-segment depression between the precordial and inferior leads in electrocardiographic recordings made during sequential anginal attacks. This electrocardiographic "seesaw" phenomenon was observed during ergonovine-induced attacks in 3 cases and during spontaneous attacks in 1 case. Another patient showed ST-segment ...
Miwa K - - 1993
This study examined the question of whether intracoronary administration of nitroglycerin modifies contralateral intracoronary acetylcholine test results. Acetylcholine was injected separately into both left and right coronary arteries in 63 patients with coronary spastic angina. Acetylcholine (20 and 50 micrograms) was injected first into the coronary artery responsible for the ...
Kalsner S - - 1993
Traditionally coronary artery spasm, which is implicated in the pathogenesis of angina, myocardial infarction and sudden death, has been perceived as involving either a powerful spasmogen or larger quantities of a less potent stimulant. The present essay proposes that spasm may occur in the complete absence of any inciting chemical ...
Ide M - - 1993
Posttraumatic cerebral arterial spasm occurred in a 51-year-old male after a fall striking the left frontal region of the head. The initial computed tomography was identical to that of severe subarachnoid hemorrhage from ruptured aneurysm. He was neurologically stable for the 1st week following the accident, but his condition deteriorated ...
Yamanishi K - - 1993
To clarify the effect of intracoronary injection of acetylcholine on coronary collateral circulation, acetylcholine (20 and 50 micrograms) was injected directly into the donor artery of 5 patients with rest angina who had angiographically demonstrable collateral channels. Coronary spasm was defined as severe vasoconstriction (> or = 90% of luminal ...
Tisdale L A - - 1993
Many patients in the critical care unit (CCU) are at risk for myocardial ischemia and acute coronary artery reocclusion. The use of continuous ST segment monitoring detects transient and sustained ischemia, despite the absence of symptoms, more completely than rate and rhythm monitoring alone. The accuracy and sensitivity of the ...
Mizuyama K - - 1993
Coronary artery spasm occurred during thoracotomy under cervical epidural anesthesia in a 60-year-old male patient who had no prior history of myocardial ischemia. It is most likely that the administration of methoxamine induced the spasm. Hypotension and venodilatation induced by the epidural anesthesia and increased vagal tone might also contribute ...
De Mattos J P - - 1992
A 70 years-old man was admitted at our hospital because of unstable angina pectoris. He had essential hypertension and right hemiplegia from a ischemic stroke two years before admission. On neurologic examination, it was found mental disorientation, unstable emotionality, right spastic hemiparesis with right Babinski sign, and segmental myoclonus affecting ...
Gaspardone A - - 1992
A 58-year-old woman, referred to our hospital to undergo invasive assessment of mitral valve stenosis, demonstrated prolonged asymptomatic catheter-induced left anterior descending and right coronary artery spasm during coronary arteriography. Coronary spasms were not associated with ECG and arterial blood pressure changes. Intracoronary injection of nitroglycerin (300 and 600 micrograms ...
Miwa K - - 1992
In an attempt to clarify the role of coronary artery spasm in the pathogenesis of unstable angina, acetylcholine (20 and 50 micrograms) was injected directly into the coronary arteries of 19 patients with unstable effort angina (group 1), 30 patients with unstable spontaneous angina (group 2), and 15 patients with ...
Oguni H - - 1992
We studied 36 drop seizures in 5 patients with myoclonic astatic epilepsy of early childhood (MAEE) with simultaneous split-screen video recording and polygraph. Sixteen were falling attacks and 20 were either less severe attacks exhibiting only deep head nodding or seizures equivalent to drop attacks in terms of ictal pattern ...
Warren P J - - 1992
Limb exsanguination before tourniquet inflation is usually accomplished using mechanical devices although, where their use is contraindicated, exsanguination by elevation alone may be employed. Advice regarding duration of elevation within the literature is a little confusing with recommendations ranging from 20 s to 5 min. Volume changes, during elevation at ...
Tesio L - - 1992
Penicillin gluteal injection may cause sudden and irreversible paraplegia. In the literature 6 cases have been reported, and spinal infarction was conjectured, the mechanism being obscure. The actual incidence of such a complication is not known. We observed 2 more cases, 6 and 16 years respectively following such an injection. ...
Koh K K - - 1992
Electrocardiographic signs of diffuse three-vessel coronary artery spasm may show various findings including no ST segment changes, according to whether or not a difference of an electrical gradient develops between the anterior and inferior regions because of global ischemia. This study suggests that diffuse three-vessel coronary artery spasm must be ...
García-Rubira J C - - 1992
We reviewed the prevalence of coronary arterial disease in a consecutive series of 117 patients with severe isolated aortic stenosis. Coronary arterial disease was present in 18 of 48 patients with typical angina, in 10 of 38 patients with atypical angina, and in 4 of 31 patients without angina. We ...
Tanabe Y - - 1992
To examine the role of coronary artery spasm in patients with syncope after alcohol ingestion, we performed an intracoronary ergonovine provocation test in 7 male patients (39 to 73 years old, mean 54 years) with alcohol-related syncope which remained unexplained despite noninvasive cardiovascular and neurological examinations. No patients had structural ...
Gal D - - 1992
BACKGROUND: Previous in vitro experiments performed in our laboratory have shown that low-level laser energy may produce prompt reduction in isometric tension of vascular smooth muscle. The present study was designed to extend these previous in vitro findings to an in vivo model and thereby investigate the hypothesis that laser ...
Juni J - - 1992
We describe a patient without a previous history of migraine or epilepsy and with no known vascular risk factors, who suffered subarachnoid haemorrhage. During vertebral angiography using nonionic contrast medium (iohexol), spasm of the basilar artery was seen. The patient suffered transient global amnesia. Angiography 3 months later with the ...
Jackson C V - - 1992
We have compared the thrombolytic efficacy of a novel single-chain, recombinant tissue-type plasminogen activator variant, LY210825, containing the second kringle and serine protease domains of native tissue-type plasminogen activator, with anisoylated plasminogen-streptokinase activator complex (APSAC). Male hounds (16-22 kg) were anesthetized, the left circumflex coronary artery was isolated and an ...
Lucignani G - - 1992
We tested the possibility of identifying areas of hibernating myocardium by the combined assessment of perfusion and metabolism using single photon emission tomography (SPET) with technetium-99m hexakis 2-methoxyisobutylisonitrile (99mTc-MIBI) and positron emission tomography (PET) with fluorine-18 fluoro-2-deoxy-D-glucose (18F-FDG). Segmental wall motion, perfusion and 18F-FDG uptake were scored in 5 segments ...
Yoshida H - - 1991
A case of ET associated with angina pectoris is presented. Angiography showed a 3.0-cm long mosaic-like thrombus shadow consisting of small filling defects in the proximal left anterior descending artery. The lesion could not be reduced with warfarin, ticlopidine, trapidil, urokinase or melphalan. Coronary artery bypass grafting was performed successfully.
Tsuyumu M - - 1991
A case with painful tic convulsif is presented. A 77-year-old woman had developed trigeminal neuralgia 12 years before admission and ipsilateral facial spasm 2 years before admission. Upon operation, the superior cerebellar artery was found to impinge upon the entry zone of the fifth nerve. In addition, the anterior inferior ...
Nogami A - - 1991
Two patients with von Recklinghausen's disease presented with coronary artery spasm, transient high concentrations of norepinephrine, catecholamine-induced myocarditis, and regional sympathetic denervation of the heart that was assessed by I-123 metaiodobenzylguanidine scintigram. It is postulated that regional sympathetic denervation of the heart may precipitate both coronary artery spasm and catecholamine-induced ...
Nagata S - - 1991
A 66-year-old male presented with clinical features of hemifacial spasm. Cerebral angiograms disclosed an arteriovenous malformation (AVM) in the cerebellopontine angle. The hemifacial spasm was caused by a dilated feeding artery of the AVM compressing the facial nerve at the root exit zone. Surgery was not initially performed because of ...
Wadström J - - 1991
The effect of topical administration of 2 or 20% lidocaine and of 3% pentobarbital on traumatic vasospasm was studied in the central ear artery of the rabbit. The inner diameter of the artery was measured by in vivo microscopy. Vasospasm was induced by a standardised pinch of a 3.2 mm ...
Myers G H - - 1991
A woman had diffuse vascular spasm related to cocaine use. She presented with evidence of an acute anterior myocardial infarction but had no rise in creatinine phosphokinase levels. Cardiac catheterization showed 90 percent proximal left main coronary artery narrowing. The catheterization was complicated by right femoral artery spasm. A repeat ...
Mosseri M - - 1991
BACKGROUND: The coronary microvasculature may be abnormal even in the presence of angiographically normal epicardial arteries. Abnormalities of small coronary vessels have been invoked as a cause of angina. METHODS AND RESULTS: To quantitatively evaluate the morphology of capillaries in patients with idiopathic dilated cardiomyopathy (DCM) or the syndrome of ...
Danchin N - - 1991
Twelve consecutive patients (10 men and 2 women, mean +/- standard deviation age 49 +/- 9 years) with chest pain, angiographically normal coronary arteries and coronary artery spasm documented by methylergometrine testing received a single oral dose of molsidomine (4 mg) or nifedipine (10 mg) in a randomized, double-blind, crossover ...
Baptista C A - - 1991
The surgical, clinical and radiological importance of the diagonal artery in the human heart and the extreme variability in its description prompted us to undertake its study. The investigation was performed in 150 hearts, dissected after injection of colored substance in the coronary arteries. The following results were obtained: The ...
Kapashi K A - - 1991
In 100 patients with unstable angina and 50 patients with stable angina qualitative morphology of coronary artery lesions were compared by angiography. The mean age of the patients was 51 years. In the unstable angina group, 50 patients had rest angina, 32 had crescendo angina and 18 had denovo angina; ...
Matsumoto K - - 1991
The authors describe the first reported case of dissecting aneurysm presenting with hemifacial spasm. The patient was a 58-year-old woman with left hemifacial spasm of 2 years' duration. Cranial nerve examination was otherwise normal and no other clinical symptoms were observed. Vertebral angiography revealed a fusiform enlargement of the left ...
Kaski J C - - 1991
It has been suggested that a generalized coronary vasomotion disorder is present in variant angina and that evaluation of baseline coronary artery tone may be useful for predicting the occurrence of coronary artery spasm. The vasomotor response of angiographically normal proximal and distal coronary artery segments was studied in 9 ...
Evans D A - - 1991
The acetylator phenotypes were determined by means of a sulfamethazine test in 101 Saudi Arabian patients with authenticated coronary atheroma; 65 were found to be slow acetylators. This distribution of phenotypes is not significantly different from that in 220 controls, 148 of whom were slow acetylators. This finding makes it ...
Frequin S T - - 1991
A 25 year old patient presented with recurrent prolonged episodes of life-threatening coma varying from 3 to 10 days. The clinical recovery was slow. The history and technical examinations led to the diagnosis of basilar artery migraine (BAM). The etiology of the coma episodes is thought to be related to ...
Okumura K - - 1991
It has been suggested that histamine is involved in the pathogenesis of coronary spasm but its exact role remains unclear. H1 receptor stimulation of the coronary artery was performed with a selective intracoronary infusion of histamine (2 micrograms/min) in 21 patients with variant angina after blockade of the H2 receptor ...
Toyo-oka T - - 1991
To elucidate the pathogenic contribution of a potent vasoconstrictor, endothelin-1, to coronary artery spasm, we provoked spasm with intracoronary administration of acetylcholine or ergonovine and performed sensitive immunoassays of plasma levels of endothelin-1 and atrial natriuretic factor (ANF) in the peripheral vein and coronary sinus of patients with a tentative ...
Mackie R W RW - - 1991
This study examined the safety and dose-response relationships of 632-nm laser irradiation of photosensitized normal coronary arteries in 27 dogs. Fifteen received 2.5 mg/kg dihematoporphyrin ether (DHE), seven received no sensitizer, and five had coronary instrumentation but no laser (sham laser procedures) at nine coronary sites--four sensitized, five non-sensitized. Laser ...
Hoshio A - - 1991
The coronary artery response to ergonovine (EM) and nitrate of the proximal, middle and distal segments of the three major coronary artery branches and the main trunk was quantified in 67 patients without coronary spasm and in 69 patients with coronary spasm without significant organic stenosis. The changes in control ...
Suzuki S - - 1990
In the treatment of hemifacial spasm and trigeminal neuralgia by microvascular decompression (MVD), lack of improvement or recurrence may occur because of the difficulties in positioning prostheses and the involvement of the large vertebrobasilar arteries, even with use of fenestrated aneurysm clips or adhesives. We have developed a new method ...
Segawa J - - 1990
We experienced a patient in whom coronary spasms were induced by an ergonovine provocation test during coronary angiography at the sites of coronary artery ectasia. The patient was a 45-year-old male with chest pain at rest, which promptly disappeared when given sublingual nitroglycerin. Similar attacks occurred frequently even with the ...
Danchin N - - 1990
In a 58-year-old man with rheumatic mitral valve disease and nocturnal chest pain of recent onset, intravenous injection of 0.4 mg methylergometrine during coronary angiography resulted in the total occlusion of all three angiographically normal coronary arteries, with electromechanical dissociation. Intravenous isosorbide dinitrate failed to relieve coronary spasm which had ...
Bertrand M E - - 1990
The rotablator is a high-speed rotating ablative system developed to grind obstructing atheromatous material into fine particles. It consists of a rotating burr attached to a long, flexible driving shaft with a central flexible guidewire. The device rotates with a speed of 190,000 r.p.m. In this study, after appropriate pretreatment, ...
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