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 15,891 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A prospective case-control study was carried out to clarify associations of cerebral transient ischemic attacks (TIAs) and other stroke risk factors with progression and exacerbation of cardiovascular and cerebrovascular disorders; 243 neurologically normal controls and 123 TIA patients without prior history of stroke were followed up for a mean interval of 4.4 years of TIA patients, 26 (21%) developed other events (excluding recurrent TIAs); 10 died of vascular causes (8.1%). Of controls, 44 (18%) developed events; 13 died of vascular causes (5.4%) and 3 from cancer. TIA patients were at 2.3 times greater risk than normal controls for stroke or death from vascular causes. They were predominantly male with significantly higher associations of risk factors for stroke, including hypertension, heart disease, diabetes mellitus, smoking, hyperlipidemia, alcohol consumption, and limited education. Controls developing vascular events compared with controls who did not were older, more frequently male, and with greater incidences of heart disease. TIA patients had lower rates of cerebral perfusion compared with controls that persisted throughout the study, with similar rates of decline related to aging among both groups. Among TIA patients, stroke risk factors were more prevalent than among controls. The longer their duration, the greater the incidence and the more rapid the rate of severe, often fatal cardiovascular complications.
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PMID:Prospective study of vascular events and cerebral perfusional changes following transient ischemic attacks. 863 63

This report presents the findings of a retrospective review of 193 cases of cerebrovascular attacks (CVA) diagnosed on the basis of clinical data over a 3-year period at the Bobo Dioulasso Hospital in Burkina Faso. CVA accounted for 15.1% of admissions for cardiovascular disorders. Mean patient age was 58.4 +/- 14 years and the male to female ratio was 2:1. From a socioeconomic standpoint 72% of patients had low incomes and 22% were laborers. Risk factors were poorly controlled hypertension (83.9%), obesity (44.2%), hyperlipidemia (20.6%), thromboembolism (16.6%), smoking (12.4%), hypercholesterolemia (8.1%) and diabetes (7.3%). Further study is needed to confirm risk related to red blood cell abnormalities. The event was transient ischemic attack in 22 cases (11.7%) and stroke in 171 cases (88.3%). Hospital mortality was high (31.6%) with a significantly higher death rate in elderly (p < 0.05) and female (p < 0.001) patients. Recurrent CVA within a mean delay of 9 to 12 months following the initial event was observed in 11.4% of survivors and was fatal in 80%. The authors emphasize the need for improvement in the management of arterial hypertension by district physicians and for prevention of thromboembolic complications in high-risk patients.
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PMID:[Risk and severity factors in cerebrovascular accidents in west african Blacks of Burkina Faso]. 930 7

Although the treatment of acute ischemic stroke has improved, the greatest reductions in stroke mortality and morbidity may possibly be achieved through more effective prevention strategies. Toward this goal, risk factor profiles for initial and recurrent stroke have been identified through longitudinal epidemiologic studies. Nonmodifiable risk markers for initial ischemic stroke include age, sex, family history, and race/ethnicity. Modifiable risk factors for first ischemic stroke include hypertension, cardiac disease (particularly atrial fibrillation), diabetes, hyperlipidemia, cigarette smoking, alcohol abuse, physical inactivity, asymptomatic carotid stenosis, and transient ischemic attack. As improved acute treatments increase survival after a first stroke, the threat of increased morbidity from stroke recurrence will have greater significance. The risk and specific determinants of early and late stroke recurrence are the subject of ongoing investigations. Age, stroke syndrome, hypertension, cardiac disease (particularly congestive heart failure), hyperglycemia, and alcohol abuse have been identified as predictors of late stroke recurrence. Now that many risk factors are established, greater emphasis should be placed on identifying high stroke-risk patient populations for intensive risk factor modification and antithrombotic treatments. Better understanding and management of stroke risk factors will undoubtedly improve our ability to prevent first and recurrent ischemic stroke.
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PMID:Identifying patient populations at high risk for stroke. 974 29

Stroke is the third leading cause of death and the leading cause of chronic disability in the United States. In the past several decades, case series, case-control studies, and prospective cohort studies have successfully identified nonmodifiable risk markers for stroke, such as age, gender, race, ethnicity, heredity and several well-established modifiable risk factors for ischemic stroke. Hypertension, atrial fibrillation, other cardiac diseases, hyperlipidemia, diabetes, cigarette smoking, physical inactivity, carotid stenosis, and transient ischemic attack (TIA) are all potentially treatable conditions that predispose to stroke. Research on other putative stroke risk factors-including antiphospholipid antibodies, elevated homocysteine, alcohol, inflammation, and infection-is ongoing. Controlled trials have shown that stroke risk can be reduced by blood-pressure control, lipid-lowering agents, surgery for carotid stenosis, warfarin for atrial fibrillation, and antiplatelet agents. It is hoped that an improved understanding of stroke risk factors will reduce the future burden of stroke.
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PMID:Stroke risk factors and stroke prevention. 993 14

From 1990 to 1997, June, 296 patients (156 males and 140 females), aged 16 to 45 years, admitted in the Neurology Department of the University Hospital of Nancy (F) for ischemic stroke, were prospectively evaluated according to a standardized analysis of anamnestic and clinical data, angiography (90 p. 100 of cases), TEE (78 p. 100), hemostasis. Women were younger (mean age = 34.82 y) than men (36.87 y; p = 0.003), with a peak in the 4th decade. Clinical event was a TIA in 14.2 p. 100, a stroke in 51.7 p. 100; it concerned the anterior circulation in 64.5 p. 100, posterior circulation in 25 p. 100, multiple territories in 10.5 p. 100. History of TIA, cervical-cranial pain or Horner syndrome suggestive of dissection, pregnancy or post-partum were found respectively in 60 (20.3 p. 100), 34 (11.1 p. 100) and 13 (9.3 p. 100) cases. Risk factors concerned 87.2 p. 100 of patients, mainly smoking (55.1 p. 100), oral contraceptive (53 p. 100), hyperlipemia (35 p. 100), and were more frequent in case of atheroma and lacunar stroke (p < 0.0000). Etiology, according to TOAST classification, was: atheroma (8.4 p. 100), cardioembolism (8.7 p. 100), small-artery disease (7.1 p. 100), dissection (15.5 p. 100), other determined causes (11.1 p. 100), multiple causes (5.7 p. 100), undetermined cause (34.8 p. 100). Septal pathology was found 34 times. Patients whose stroke remained unexplained were younger (33.7 y vs 37.7, p = 0.002), had less risk factors (p < 0.0000), had more TIA (p = 0.005), more often in the carotid territory (p = 0.008), had a better prognosis (p = 0.01), and showed more often emboli at angiography (p = 0.001). During a mean follow-up of 33 months (median = 19), 21 recurrent strokes occurred and 6 patients died. 134 (46 p. 100) patients had no sequelae, 101 (34.7 p. 100) minor disability, 42 (14.4 p. 100) major sequelae. These results, compared to the main studies of the literature, suggest the interest of common definition criteria and classification of etiologies. In practice, hierarchisation of investigations may be proposed, and vascular risk factors should be tracked in young patients. In patients whose stroke remains unexplained, further studies, as atrial vulnerability, are needed.
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PMID:[Cerebral ischemic accidents in young subjects. A prospective study of 296 patients aged 16 to 45 years]. 1048 47

In a cross-sectional study of 293 nondiabetic patients (169 men and 124 women) referred for the diagnosis and treatment of hyperlipidemia, our specific aim was to determine whether fasting serum insulin independently contributes to the prediction of atherosclerotic cardiovascular disease (ASCVD) status. Of the 169 men and 124 women, 65 (38%) and 44 (35%), respectively, had ASCVD with at least one of the following: unstable angina, myocardial infarction (MI), angioplasty, coronary artery bypass graft (CABG), claudication, transient ischemic attack, or ischemic stroke. In addition, 42% and 38% had fasting hyperinsulinemia (> or =20 microU/mL). Fasting serum insulin of 20 microU/mL or higher was very common in women (59% to 100%) and men (67% to 88%) when hypertension, obesity, top-decile triglyceride (TG), and bottom-decile high-density lipoprotein cholesterol (HDLC) were concurrent in various combinations. ASCVD events (present or absent) were dependent variables in a stepwise logistic regression model with explanatory variables including age, gender, race, hypertension, cigarette smoking, ASCVD in first-degree relatives at age 55 years or less, Quetelet Index, fasting serum insulin, a gender x insulin interaction term, anticardiolipin antibodies (ACLAs) IgG and IgM, total cholesterol to HDLC ratio, TG, lipoprotein(a) [Lp(a)], and homocysteine. The risk odds ratio for ASCVD (109 events and 184 nonevents) for subjects with top-decile insulin (vthe bottom nine deciles) was 3.71, with a 95% confidence interval (CI) of 1.62 to 8.9 (P = .002). For patients with MI and/or CABG and/or angioplasty ([MCA] 63 events and 184 nonevents), the risk odds ratio for top-decile insulin versus the rest was 5.07 (95% CI, 1.83 to 14.8, P = .002). For patients with MCA at age 55 or less, the gender x insulin interaction term was significant (P = .0004); the risk odds ratio for men with top-decile insulin was 13.28 (95% CI, 3.82 to 51.65, P = .0001). Hyperinsulinemia is very common in nondiabetic hyperlipidemic women and men. Fasting serum insulin, a crude, simple, practical, and inexpensive measure, independently and uniformly improved the prediction of ASCVD status beyond traditional risk factors and lipid variables in patients referred for treatment of hyperlipidemia.
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PMID:Contribution of fasting hyperinsulinemia to prediction of atherosclerotic cardiovascular disease status in 293 hyperlipidemic patients. 1058 54

The development of the duplex scanner has made the diagnosis of carotid arterial disease easy to those trained in its interpretation. The difficulty lies in the ability to define the patient population most likely to benefit from early diagnosis and treatment. All patients referred to the vascular laboratories at two major hospitals for evaluation of neurologic symptoms were entered into the study. The indications for the study, comorbid conditions, and medications were tabulated and compared with the results of the carotid duplex scan. The purpose was to see whether there was a relationship between the severity of carotid arterial disease and symptoms. A total of 5,807 carotid duplex scans were performed on 5,001 patients. There were 525 patients (11%) with an internal carotid artery stenosis of >70 per cent and 252 patients (5%) with an occlusion of the internal carotid artery. In addition, there were a group of 139 patients with severe bilateral carotid disease. Bruit and a history of known carotid disease were the only indications that were statistically related to severe carotid arterial disease. Smoking, diabetes, peripheral vascular disease, cardiac conditions, and hyperlipidemia were also statistically related to patients with significant carotid disease. This study indicates that the classic indications for carotid duplex scans such as transient ischemic attack, amaurosis fugax, and dizziness have no correlation with the severity of the disease.
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PMID:Severe carotid arterial disease: a diagnostic enigma. 1091 77

More than 700,000 strokes occur annually in the United States--one every 40 to 50 seconds. Although stroke is one of the nation's most expensive diseases to treat, costing $41 billion per year, most strokes (perhaps as many as two thirds) are preventable. Twenty percent of the United States population will have 80% of all strokes; this estimate is based on five established, major risk factors for stroke: hypertension, diabetes mellitus, cigarette smoking, hyperlipidemia, and heart disease. Therefore, stroke is not random but is generally predictable. It is an ideal target for effective prevention strategies that are simple and inexpensive. Ischemic stroke prevention has been shown to be effective in several scenarios: primary prevention, prevention after a transient ischemic attack (TIA), and secondary prevention. Dietary, lifestyle, and risk factor modification; use of aspirin, ticlopidine, clopidogrel, and warfarin; and carotid endarterectomy all have a role in stroke prevention in selected persons. Emerging therapies include the use of vitamins, cerebral arterial angioplasty, and stenting. Annual risk assessment, screening, and intervention should be part of a concerted national effort to reduce the incidence of the third leading cause of death and the number one cause of adult disability in the United States.
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PMID:Ischemic Stroke Prevention. 1109 1

The aim of this review is to present the current knowledge regarding stroke. It will appear in three parts (in part II the pathogenesis, investigations, and prognosis will be presented, while part III will consist of the management and rehabilitation). In the current part (I) the definitions of the clinical picture are presented. These include: amaurosis fugax, vertebrobasilar transient ischemic attack, and stroke (with good recovery, in evolution and complete). The role of the following risk factors is discussed in detail: age, gender, ethnicity, heredity, hypertension, cigarette smoking, hyperlipidemia, diabetes mellitus, obesity, fibrinogen and clotting factors, oral contraceptives, erythrocytosis and hematocrit level, prior cerebrovascular and other diseases, physical inactivity, diet and alcohol consumption, illicit drug use, and genetic predisposition. In particular, regarding the carotid arteries, the following characteristics are analyzed: atheroma, carotid plaque echomorphology, carotid stenosis, presence of ulcer, local variations in surface deformability, pathological characteristics, and dissection. Finally the significance of the cerebral collateral circulation and the conditions predisposing to cardioembolism and to cerebral hemorrhage are presented.
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PMID:Stroke: epidemiology, clinical picture, and risk factors--Part I of III. 1110 23

The objective was to assess the frequency of pure motor stroke caused by different stroke subtypes and to compare demographic, clinical, neuroimaging, and outcome data of pure motor stroke with those of patients with other lacunar stroke as well as with those of patients with non-lacunar stroke. Data from 2000 patients with acute stroke (n=1761) or transient ischaemic attack (n=239) admitted consecutively to the department of neurology of an acute care 350 bed teaching hospital were prospectively collected in the Sagrat Cor Hospital of Barcelona stroke registry over a 10 year period. For the purpose of the study 222 (12.7%) patients with pure motor stroke were selected. The other study groups included 218 (12.3%) patients with other lacunar strokes and 1321 (75%) patients with non-lacunar stroke. In relation to stroke subtype, lacunar infarcts were found in 189 (85%) patients, whereas ischaemic lacunar syndromes not due to lacunar infarcts occurred in 23 (10.4%) patients (atherothrombotic stroke in 12, cardioembolic stroke in seven, infarction of undetermined origin in three, and infarction of unusual aetiology in one) and haemorrhagic lacunar syndromes in 10 (4.5%). Patients with pure motor stroke showed a better outcome than patients with non-lacunar stroke with a significantly lower number of complications and in hospital mortality rate, shorter duration of hospital stay, and a higher number of symptom free patients at hospital discharge. After multivariate analysis, hypertension, diabetes, obesity, hyperlipidaemia, non-sudden stroke onset, internal capsule involvement, and pons topography seemed to be independent factors of pure motor stroke in patients with acute stroke. In conclusion, about one of every 10 patients with acute stroke had a pure motor stroke. Pure motor stroke was caused by a lacunar infarct in 85% of patients and by other stroke subtypes in 15%. Several clinical features are more frequent in patients with pure motor stroke than in patients with non-lacunar stroke.
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PMID:Clinical study of 222 patients with pure motor stroke. 1145 2


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