Search Results
Results 201 - 250 of 754
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Angelini Annalisa - - 2004
BACKGROUND: Filter protection after percutaneous coronary intervention (PCI) is now available to prevent distal embolization. The aims of this study were (1) to evaluate the microembolization phenomenon during procedures of stent implantation in native coronary arteries of patients with stable and unstable angina, (2) to assess the amount and characteristics ...
Di Cori Andrea - - 2004
Ventricular tachyarrhythmias have been well documented in patients with variant angina. Episodes of torsade de pointes have been described infrequently. We report a case of a 60-year-old male with a previous history of one vessel artery disease and a successful coronary angioplasty with stenting of the left anterior descending artery, ...
Kawai Yuko - - 2004
BACKGROUND: Basic and clinical studies have indicated that 15-(p-[(123)I] iodophenyl)-3-(R, S) methylpentadecanoic acid (BMIPP) single photon emission computed tomography (SPECT) can identify ischemic myocardium without evidence of myocardial infarction by the regional decline of tracer uptake. The present study compared BMIPP SPECT with rest-stress myocardial perfusion imaging (MPI) findings and ...
Sezai Akira - - 2004
The patient was a 48-year-old male who was diagnosed with unstable angina. He had worsening cardiogenic shock during coronary angiography. Emergency coronary artery bypass grafting (CABG) was performed. He had a methicillin-resistant Staphylococcus aureus (MRSA) mediastinitis on day 22 after CABG. Drains were placed in the anterior mediastinum, left thoracic ...
Nathoo Narendra - - 2004
W. James Gardner, a skillful neurosurgeon and inventor, is best remembered for his cervical tongs and hydrodynamic theory of syringomyelia. A pioneer of modern neurosurgery, Gardner trained under Charles Frazier in Philadelphia, and in 1929 he moved to Ohio where he became chief of neurosurgery at the Cleveland Clinic, a ...
Miwa Kunihisa - - 2004
BACKGROUND: It is not known whether multivessel coronary spasm occurs spontaneously in patients who have variant angina (VA) with demonstrated multivessel spasm induced by intracoronary injection of acetylcholine (ACh). Regional left ventricular (LV) diastolic dysfunction or wall motion abnormality may persist after an episode of coronary vasospasm. Color kinesis (CK) ...
Poppas Athena - - 2004
We evaluated the ability of electromechanical mapping (EMM) to discriminate between normal, viable, and nonviable (scarred) myocardium in patients with coronary artery disease versus dobutamine stress echocardiography (DSE) when the correspondence between the test and reference data sets is established via a common 3-dimensional reconstruction of the left ventricle. We ...
Schori Thomas R - - 2004
PURPOSE: To report a case of arterial calcification in a person who has had long-term treatment with warfarin. Although the anticoagulant has been shown to induce arterial calcification in laboratory animals, there have been no previous reports implicating warfarin as a clinical factor. CLINICAL FEATURES: On routine annual examination, the ...
Satoshi Kurisu - - 2004
A 64-year-old man with a history of previous coronary intervention of the left anterior descending artery was admitted to hospital because of recurrent chest pain at rest. Coronary angiography revealed no significant coronary artery stenosis. During preparation for the second shot of the right coronary artery, chest pain occurred unexpectedly, ...
Naito Yuji - - 2004
Paroxysmal nocturnal hemoglobinuria (PNH) is an uncommon acquired disorder of blood cells characterized by intravascular hemolysis due to an inordinate sensitivity to complement-mediated membrane damage. This report documents coronary artery revascularization in a patient with PNH, which has not been described in the literature so far. We used the on-pump ...
Watanabe Tohru - - 2004
RS-7897 is a novel antianginal nitrate containing an L-2-oxothiazolidine-4-carboxylic acid (OTCA) and unlike other organic nitrates does not induce nitrate tolerance. OTCA is known to be converted to L-cysteine (L-Cys) by rat 5-oxo-prolinase (5-OPase) and was detected in the plasma of RS-7897-treated dogs. Nitrate tolerance is considered to develop mainly ...
Wheeler Matthew T - - 2004
Vascular spasm is a poorly understood but critical biomedical process because it can acutely reduce blood supply and tissue oxygenation. Cardiomyopathy in mice lacking gamma-sarcoglycan or delta-sarcoglycan is characterized by focal damage. In the heart, sarcoglycan gene mutations produce regional defects in membrane permeability and focal degeneration, and it was ...
Wheeler Matthew T - - 2004
Genetic defects in the plasma membrane-associated sarcoglycan complex produce cardiomyopathy characterized by focal degeneration. The infarct-like pattern of cardiac degeneration has led to the hypothesis that coronary artery vasospasm underlies cardiomyopathy in this disorder. We evaluated the coronary vasculature of gamma-sarcoglycan mutant mice and found microvascular filling defects consistent with ...
Maynard Suzanne J - - 2004
BACKGROUND: The 12-lead electrocardiogram underestimates ST segment alteration in acute coronary syndromes compared with multi-lead body surface mapping. We assessed whether 80-lead mapping would improve detection of ST alteration during percutaneous coronary intervention. METHODS: Simultaneous maps and 12-lead electrocardiograms were recorded pre-procedure, during balloon inflation and post-procedure from patients undergoing ...
Ramondo Angelo - - 2004
Ths study reports different mechanisms (i.e., microvascular spasm and discrete microinfarction) that may underlie different pattern of slow-reflow after elective coronary stenting on the basis of the different tissue level of perfusion achieved, assessed by blush grade and MRI.
Shoemaker Laura K - - 2004
BACKGROUND: Cardiotoxicity is a rare but well-documented adverse effect of 5-fluorouracil (5-FU). The underlying cause of this side effect of 5-FU is uncertain. METHODS: We present a case report of a 63-year-old man treated for metastatic colon cancer who experienced chest pain while being treated with the FOLFIRI regimen. This ...
Krasnianski Michael - - 2003
We report a 62-year-old woman with a locked-in syndrome with bilateral masticatory spasms and persistent trismus, who was still able to yawn. A vascular malformation of the basilar artery-megadolichobasilar artery (fusiform aneurysm, vertebrobasilar dolichoectasia) was determined to be the underlying cause of this rare combination of symptoms. A thrombus in ...
Mansuroglu Denyan - - 2003
Hemodynamic instability due to late postoperative radial artery spasm is a rare phenomenon. This entity developed in our patient who was operated on for severe left main coronary artery stenosis with a dominant circumflex artery. The spasm could not be relieved with intraluminal vasodilator therapy, and the patient underwent reoperation ...
Sueda Shozo - - 2003
OBJECTIVES: This study sought to assess the coronary flow reserve (CFR) in patients with pure vasospastic angina (VSA). METHODS AND RESULTS: The phasic flow velocities of both spasm-positive and spasm-negative coronary arteries of the left anterior descending artery (LAD) were recorded at rest and during hyperaemia (50 microg of adenosine ...
Sueda Shozo - - 2003
BACKGROUND AND OBJECTIVES: There have been few studies comparing the clinical usefulness for the induction of coronary artery spasm (CAS) between acetylcholine (ACh) and ergonovine (ER). This study is designed: (1) to examine the duration of effect after intracoronary injection of ACh on the responsible vessels using a 0.014 inch, ...
Iwami Takahiro - - 2003
BACKGROUND: Coronary arterial remodeling influences the clinical presentation of ischemic heart disease; however, there is little information on the relationship between coronary arterial remodeling and the type of angina pectoris that patients manifest. HYPOTHESIS: The study was undertaken to determine the difference of coronary arterial remodeling in patients with different ...
Molloi Sabee - - 2003
BACKGROUND: Previous studies demonstrated that the dysfunction of vasomotor tone (VT) is closely linked to the development of atherosclerosis and it is considered important in the very early stages of atherogenesis. Currently, the evaluation of VT relies on lumen changes in response to vasoactive stimuli using quantitative coronary angiography (QCA) ...
Krejza Jaroslaw - - 2003
OBJECTIVE: The overall accuracy of transcranial Doppler sonography in the diagnosis of middle cerebral artery spasm has not been established. Moreover, the factors of age and sex have not been addressed in most studies. In this article, we present receiver operating characteristic (ROC) curve analysis of the accuracy of transcranial ...
Kelkar Bharat R - - 2003
Between May 1990 and April 2000, 61 patients with severe occlusive arterial disease (44 with thromboangiitis obliterans, 13 with atherosclerosis, and four with diabetes mellitus), who had not responded to previous nonsurgical and surgical treatment and had chronic critical ischemia in the lower limbs, had corticotomy near major neurovascular bundles ...
Chang Kiyuk - - 2003
BACKGROUND: Coronary spasm seems to be associated with coronary nitric oxide deficiency. OBJECTIVES: We investigated whether the Glu298Asp polymorphism in the endothelial nitric oxide synthase (eNOS) gene is a definite risk factor for coronary spasm and whether diffuse spasm involving normal-looking coronary artery correlates significantly with the Glu298Asp polymorphism, in ...
Moukarbel George V - - 2003
Coronary artery spasm is reported to occur in 1 5% of percutaneous coronary interventions. However, coronary spasm induced solely by guidewire insertion is very rare. We present a case of diffuse coronary artery spasm induced by guidewire insertion, which responded promptly to intracoronary nitrates. The case illustrates the importance of ...
Kobayashi Kengo - - 2003
A 16-year-old female with a family history of coronary artery disease was referred to hospital because of recurrent chest oppression unrelated to exertion. Although a selective coronary angiogram showed no atherosclerotic lesions, coronary spasm was provoked by acetylcholine in the left coronary artery, accompanied by chest pain and depression of ...
Xiang Dingcheng - - 2003
OBJECTIVE: To investigate the role of coronary artery spasm in the etiology of chest pain lacking significant coronary stenosis and to identify the clinical risk factors related to coronary artery spasm. METHODS: Two hundred and seventy five patients with chest pain, but without significant coronary artery stenosis underwent the intracoronary ...
Choi S S - - 2003
We observed four transient episodes of marked ST-segment elevation in a 58-yr-old man with no history of coronary artery disease undergoing resection of a metastatic neck mass under general anaesthesia. Elevations of the ST segment were abrupt, with no change in arterial pressure or heart rate, and resolved spontaneously. When ...
Kiemeneij Ferdinand - - 2003
Radial artery spasm is a frequent complication of the transradial approach for coronary angiography and angioplasty. Recently, we have been able to quantify spasm using the automatic pullback device. The objective of this study was to assess the efficacy of an intra-arterial vasodilating cocktail in reducing the incidence and severity ...
Farmakis Dimitrios - - 2003
The coexistence of a pseudoxanthoma elasticum (PXE)-like syndrome in beta-thalassemia and other hemoglobinopathies is a recently established clinical entity that has been observed with a significant frequency and related to some severe, even life-threatening complications. We present here a thalassemia intermedia patient who developed unstable angina in a setting of ...
Holmes David R DR - - 2002
Patients with coronary artery disease have a variety of treatment options available to them. These include medications to control anginal episodes and, when appropriate, revascularization interventions in the form of coronary artery bypass graft and angioplasty. Despite advances in the treatment of angina, a substantial number of patients continue to ...
Ashby Dale T - - 2002
Treatment of coronary artery spasm can be difficult; up to 25% of patients continue to have episodes of chest pain despite maximal therapy with calcium antagonists and nitrates. We describe the case of a 42-year-old female with severe coronary artery spasm associated with a moderately severe atherosclerotic stenosis of the ...
Schillinger Martin - - 2002
BACKGROUND: Pulmonary congestion is associated with poor outcome in patients with acute coronary syndromes. In consecutive patients presenting with acute unexplained chest pain to a primary care facility, the prognostic impact of pulmonary congestion is indeterminate. Therefore, we assessed the predictive value of clinical signs of pulmonary congestion in patients ...
Asai Tohru - - 2002
A new method to skeletonize and harvest the right gastroepiploic artery using an ultrasonic scalpel is presented. The technique is simple and safe, and it causes less bleeding. It is possible not only to harvest the artery faster, but to obtain large spasm-free arterial conduits for coronary artery bypass grafting.
Hoffmeister Hans Martin - - 2002
AIM: 18F-fluorodeoxyglucose (18F-FDG)-positron emission tomography (PET) provides information about myocardial glucose metabolism to diagnose myocardial viability. Additional information about the functional status is necessary. Comparison of tomographic metabolic PET with data from other imaging techniques is always hampered by some transfer uncertainty and scatter. We wanted to evaluate a new ...
Galassi Alfredo R - - 2002
Vasoconstriction of collateral vessels has been previously reported as a mechanism of spontaneous transient ischemic episodes and after the administration of ergonovine. This case report describes a 47-year-old woman with mixed angina and a right coronary artery occlusion supplied by a collateral system related to the left anterior descending artery. ...
Ben-Ami Ronen - - 2002
Sialadenitis is an uncommon complication of intravenous administration of iodinated contrast medium. We present two cases of iodide-induced sialadenitis following coronary angiography. Clinical features and clues to differentiation from suppurative sialadenitis are discussed. The mechanism for aseptic iodide-induced sialadenitis remains unclear, but prognosis with conservative treatment is apparently good. Sialadenitis ...
Sharma Gyarsi Lal - - 2002
The gastroepiploic artery has been successfully used as an arterial conduit in selected patients undergoing CABG with acceptable immediate and long-term results. Myocardial ischemia may occur during the follow-up period as a result of spasm, occlusion, or stenosis at the anastomosis site. Because of tortuosity and in order to avoid ...
Chia Karin K M - - 2002
Hypokinetic myocardium is presumed to be reversibly dysfunctional. However, hypokinetic segments do not necessarily improve after revascularization since their outcome can be influenced by tethering effects of adjacent myocardium. To assess whether hypokinetic segments improve following revascularization, 24 patients underwent resting and dobutamine stress echocardiography (DSE), with a total of ...
Buffon Antonino - - 2002
BACKGROUND: Inflammation within vulnerable coronary plaques may cause unstable angina by promoting rupture and erosion. In unstable angina, activated leukocytes may be found in peripheral and coronary-sinus blood, but it is unclear whether they are selectively activated in the vascular bed of the culprit stenosis. METHODS: We measured the content ...
Bin Jian-Ping - - 2002
BACKGROUND: We hypothesized that increased myocardial oxygen demand resulting from hypotension and reflex tachycardia unmasking a reduced endocardial myocardial blood flow (MBF) reserve is the mechanism of dipyridamole-induced regional dysfunction in chronic coronary artery disease. METHODS AND RESULTS: Ameroid constrictors were placed around the proximal coronary arteries and their major ...
Saito Shigeru - - 2002
Radial artery spasm is one of the major problems during transradial coronary intervention (TRI). The sheath introducer with hydrophilic coating may reduce the incidence of spasm and reduce the difficulty in removing it from the radial artery under the situation of spasm artery spasm. After we compared the friction resistance ...
Sueda Shozo - - 2002
OBJECTIVES: The purpose of this study was to clarify clinical and angiographical characteristics of acetylcholine (ACh)-induced spasm in the right and left coronary artery. METHODS AND RESULTS: We performed 557 consecutive procedures of spasm provocation tests of ACh from January 1991 to December 2000 in patients without significant stenosis. ACh ...
Masumoto Akihiro - - 2002
BACKGROUND: Increased activity of Rho-kinase causes hypercontraction of vascular smooth muscle and has been implicated as playing a pathogenetic role in divergent cardiovascular diseases such as coronary artery spasm. We examined whether an intracoronary infusion of fasudil, a selective Rho-kinase inhibitor, would attenuate coronary vasoconstrictor responses to acetylcholine (ACh) in ...
Mariak Zenon - - 2002
OBJECT: The value of transcranial Doppler ultrasonography for the detection of middle cerebral artery (MCA) spasm has been asserted. None of the published studies, however, has adequately scrutinized the overall diagnostic accuracy of this procedure. There are only sporadic reports concerning the utility of transcranial color Doppler (TCCD) ultrasonography, although ...
Timurkaynak Timur - - 2002
Adenosine is a powerful direct coronary vasodilator with a very short half-life that has been shown to be effective in avoiding and reversing no reflow. We report an immediate successful recanalization of an occluded major side branch after stenting with acute intracoronary adenosine administration. The beneficial effect of adenosine may ...
Fukuda Yukihiro - - 2002
Reduced bioavailability of tetrahydrobiopterin (BH4), an essential cofactor for nitric oxide (NO) synthase, and the resulting decrease in NO in the coronary circulation may be involved in the pathogenesis of coronary spasm. The present study investigated the effects of BH4 on the vascular response to acetylcholine (ACh) in 28 patients ...
Maejima Y - - 2001
A 64-year-old man was admitted to hospital under the suspicion of unstable angina pectoris. Coronary angiography showed that he has a single coronary artery originating from the right coronary artery (RCA) without significant fixed stenosis. Acetylcholine was superselectively infused into the left main coronary artery (LMCA), and confirmed the coronary ...
Kiemeneij F - - 2001
Current evaluation of radial artery spasm (RAS), a frequent finding during the transradial approach for coronary angiography and angioplasty (TRA), is subjective. A quantitative measure of RAS will help in evaluation and comparison of management strategies. The objectives of the study were to assess the feasibility and safety of using ...
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