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Infective endocarditis is an uncommon manifestation of group B streptococcal disease. Seven cases of group B streptococcal endocarditis are reported herein. Another fifty-five cases published in the literature since 1962 are reviewed: the male to female ratio was 1.4:1. The average age was 53.8 years, and 45% of patients were 60 years of age or older. Two cases of nonsocomial endocarditis and two cases of polymicrobial endocarditis were identified. There were five cases of prosthetic valve endocarditis. Mitral and aortic valvular involvement were present in 48% and 29% of cases, respectively. Underlying heart disease was found in more than half of the cases. Rheumatic heart disease was the commonest underlying cardiac condition. Noncardiac underlying conditions included diabetes mellitus, alcoholism, pregnancy, intravenous drug abuse, and genitourinary disease. Onset was varied as was initial presentation of the disease. Large arterial thrombi were common. Overall mortality was 43.5%. Penicillin is the treatment of choice for group B streptococcal endocarditis. However, based on in vitro and in vivo studies as well as case reports, some authors feel that the combination of penicillin and an aminoglycoside is a superior regimen. Cephalothin or vancomycin are alternatives for patients who are allergic to penicillin.
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PMID:Group B streptococcal endocarditis: report of seven cases and review of the literature, 1962-1985. 351 20

Of 131 young (17 to 44 years) and middle-aged (45 to 55 years) adults who had brain infarction or hemorrhage, the most common etiologic factors were rheumatic heart disease, migraine and oral contraceptive use among the younger group. In contrast, atherosclerotic, hypertensive and diabetes-associated cerebrovascular were the most common causes in the middle-aged group. Patients who have a stroke before age 45 should have prompt, complete laboratory and radiologic testing to define a possible treatable cause.
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PMID:Brain infarction and hemorrhage in young and middle-aged adults. 650 70

The clinical and echocardiographic features of 104 patients (53 women and 51 men) with mitral anular calcification (MAC) were compared with those of 121 age- and sex-matched control subjects (62 women and 59 men) without MAC. The incidence of coronary artery disease, rheumatic heart disease, systemic hypertension, and diabetes mellitus was similar in both groups. Patients with MAC had a greater incidence of cardiomegaly (p less than 0.001), cardiac conduction defects (p less than 0.001), and aortic outflow tract murmurs (p less than 0.005) than did control patients. Patients with MAC and without aortic root calcification had a higher incidence (p less than 0.001) of conduction defects than did patients with aortic root calcification without MAC. Control patients with and without aortic root calcification had a similar incidence of conduction defects. A higher incidence of atrioventricular block (p less than 0.025) and bundle branch block or left anterior hemiblock or intraventricular conduction defect (p less than 0.05) was present in anterior MAC than in posterior MAC. In conclusion, patients with MAC have a higher incidence of cardiomegaly, cardiac conduction defects, and aortic outflow tract murmurs than a control group.
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PMID:Clinical and echocardiographic characteristics of patients with mitral anular calcification. Comparison with age- and sex-matched control subjects. 682 78

In the Framingham Study 2325 men and 2866 women 30 to 62 years old at entry were followed biennially over 22 years for the development of chronic atrial fibrillation in relation to antecedent cardiovascular disease and risk factors. During surveillance, atrial fibrillation developed in 49 men and 49 women. The incidence rose sharply with age but did not differ significantly between the sexes. Overall, there was a 2.0 per cent chance that the disorder would develop in two decades. Atrial fibrillation usually followed the development of overt cardiovascular disease. Only 18 men and 12 women (31 per cent) had chronic atrial fibrillation in the absence of cardiovascular disease. Cardiac failure and rheumatic heart disease were the most powerful predictive precursors, with relative risks in excess of sixfold. Hypertensive cardiovascular disease was the most common antecedent disease, largely because of its frequency in the general population. Among the risk factors for cardiovascular disease, diabetes and electrocardiographic evidence of left ventricular hypertrophy were related to the occurrence of atrial fibrillation. The development of chronic atrial fibrillation was associated with a doubling of overall mortality and of mortality from cardiovascular disease.
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PMID:Epidemiologic features of chronic atrial fibrillation: the Framingham study. 706 92

A total of 14,500 E.C.G. tracings were reviewed to determine the incidence of bifascicular block and those patients were followed up to assess prognosis. Forty patients with bifascicular block (complete right bundle branch block associated with left anterior hemiblock), diagnosed with standard E.C.G., according to Medrano's criteria from January 1978 to September 1980 were studied in our Service. The incidence of this intraventricular conduction defect was 0.0033 (3.3 per thousand). Males predominated over females at a rate of 2.4 to 1. This block was more frequent from the sixth to the ninth decades of life. Thirty five percent of the patients had no evidence of cardiovascular pathology; 32.5 percent had high blood pressure, 2.5 percent had coronary heart disease, 2.5 percent rheumatic heart disease, 5 percent chronic pulmonale, and 37.5 percent had diabetes mellitus as an associated finding. During the follow up which covered 20.2 months/patient, only one patient developed junctional rhythm and periods of asystolia and syncope; this case was treated with a permanent pacemaker with good results. Two patients died, one from digitalis intoxication and the other at home, the cause was not determined. It is necessary to study this conduction defect with longer follow up periods and according to the underlying heart disease, in order to assess properly the prognosis and behavior of this conduction defect.
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PMID:[Bifascicular block: long-term follow-up. Report of 40 cases]. 708 98

Atrial fibrillation (AF) predisposes to stroke, particularly in patients with rheumatic heart disease, congestive heart failure, arterial hypertension, diabetes mellitus or uncontrolled thyrotoxicosis. In those with rheumatic heart disease it is usual to give warfarin to reduce the incidence of stroke, although there has been no randomised controlled trial on which to base this approach. Whether patients with non-rheumatic AF should be anticoagulated was unclear when we tackled this subject five years ago. This article reviews the evidence from recent randomised controlled trials and considers whether anticoagulation with warfarin, or antiplatelet therapy with aspirin, should now be routine for patients with non-rheumatic AF.
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PMID:Warfarin or aspirin for non-rheumatic atrial fibrillation? 763 36

Two hundred and ninety one patients admitted with atrial fibrillation through the emergency room of a regional hospital in the year 1993 were reviewed to evaluate the presenting features and in-hospital treatment of patients with symptomatic atrial fibrillation. The incidence of atrial fibrillation increased with age (mean age was 73 +/- 12 years) and the ratio of female to male was 1.8:1. The commonest presenting features were palpitation (42.3%), dyspnoea (38.1%) and heart failure (16.4%). The most frequently associated cardiac conditions were hypertension (28.9%), atherosclerotic cardiovascular disease (24.7%) and rheumatic heart disease (17.5%). Pulmonary diseases (18.6%), diabetes mellitus (12.7%) and thyrotoxicosis (6.2%) were the principal associated non-cardiac conditions. Thromboembolic complications were found in 15 patients at presentation (5.2%). Cardiac enzyme assessment was investigated in two thirds of the patients (68.1%), while thyroid function test (59.5%) and echocardiography (29.6%) were less commonly investigated. Digoxin was still the most popular drug used for ventricular rate control, and cardioversion was performed in only 6.9% of patients. Antithrombotic therapy was used in 5.8% of patients only although it was clinically indicated in more than half of the patients (52%). Contraindications of anticoagulation were found in 23 patients (7.9%), including a history of gastrointestinal or cerebrovascular bleeding, active bleeding, chronic renal failure and poor drug compliance. The mean hospital stay was 5 +/- 4 days, compared to a mean stay of 2.7 days for other medical patients. Fourteen patients (4.8%) died during hospitalisation.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Presentation and management of patients admitted with atrial fibrillation: a review of 291 cases in a regional hospital. 778 42

Fifteen per cent of cerebrovascular accidents have a cardiac origin, two thirds of which are due to atrial fibrillation (AF). The Framingham study showed the risk of an ischaemic cerebral event to be increased by 5.6 in AF unrelated to rheumatic heart disease and by 17.5 when AF is associated with valvular heart disease. The risk of embolism is higher in elderly subjects and in those with underlying cardiac disease. Other high risk conditions include hypertension, diabetes, hyperthyroidism and cases with echocardiographic changes: left atrial dilatation, pre-thrombotic state or intra-atrial thrombus, atheroma of the ascending aorta. This stratification of risk should be taken into account when deciding on treatment. Conscious of the importance of the risk of embolism in AF, several authors have undertaken, over the last few years, randomised studies of the prevention of thromboembolic complications of AF: the AFASAK, BAATAF, SPAF and SPINAF trials. All showed the unquestionable efficacy of warfarin, even at low doses, at the price of a haemorrhagic risk of less than 2% per year for severe haemorrhages. A more recent study (SPAF II) confirmed the value of aspirin at the dosage of 325 mg/day which would seem to be a good alternative to anticoagulant therapy when this is contraindicated, although aspirin is less effective. The indications for anticoagulant therapy have become clearer since the publication of these results. Anticoagulant therapy is essential in permanent AF whether or not associated with rheumatic heart disease.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Thromboembolic complications of arrhythmia due to atrial fibrillation]. 778 20

We studied the prevalence of HCV antibody seropositivity and serum alanine concentrations in a random sample of healthy Egyptian children (n = 110) as well as in four high risk groups of children. Group 1 included 18 children with thalassemia major, group 2 included 17 children with insulin-dependent diabetes mellitus (IDDM), group 3 included 21 children with schistosomal hepatic fibrosis (SHF), and group 4 included 20 children with chronic rheumatic heart disease (RHD). The prevalence rate of HCV seropositivity was 12 per cent in normal children, 44 per cent in thalassemic children, 29 per cent in children with IDDM, 38 per cent in children with SHF and 0 per cent in patients with RHD. The liver size was significantly larger in HCV seropositive normal children as well as in HCV seropositive children with thalassemia and SHF compared to the seronegative children in each group respectively (P < 0.05). In all groups serum alanine transferase concentrations were significantly higher in HCV seropositive v. seronegative children. This pointed out to the high risk of continuous parenchymal hepatic damage in these children following acute HCV infection. In summary, our data revealed a relatively high prevalence of HCV antibody seropositivity in healthy Egyptian children compared to reports from other countries, and a significantly high prevalence of HCV seropositivity in children with thalassemia, IDDM, and SHF which carries a considerably high risk for development of chronic liver disease in these patients.
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PMID:Prevalence of hepatitis-C antibody seropositivity in healthy Egyptian children and four high risk groups. 860 41

This prospective study was designed to describe problems that arise when Aboriginal people undergo anaesthesia, in order to develop guidelines for anaesthetists who are not accustomed to treating Aboriginal people. Data were collected on 1122 consecutive different individuals undergoing anaesthesia at Royal Darwin Hospital, 24.5% of whom described themselves as Aboriginal. Aboriginal patients were in a poorer physiological state than were non-Aboriginal patients. The prevalence of diabetes mellitus, renal disease and rheumatic heart disease reported in Aboriginal patients was very high. Communication difficulties were more commonly reported in Aboriginal patients; the most common difficulty was apparent shyness or fear, rather than actual language difficulty. The results suggest that the treatment of Aboriginal people involves diagnosis and management of diverse preoperative medical problems, and that better management may be achieved by learning simple cultural strategies and by adding Aboriginal interpreters and health workers to the anaesthetic team.
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PMID:Anaesthesia for aboriginal Australians. 951 74


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