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Biomedical subjects

A Coste

Publications and source records attributed to A Coste.

103 records · Page 6Linked to original sources
PubMed1980

[Sinus node dysfunction. Clinical outcome and results of cardiac pacing].

112 patients (average age 66 +/- 13 years) with sinus node dysfunction, selected on clinical, electrocardiographic and electrophysiological criteria, were followed up for a period of 3 to 55 months (average: 30,2 months). Permanent cardiac pacing was instituted in 59 patients (52,6 p. 100), and the remaining patients treated medically. 25 patients were lost to follow up (22,3 p. 100: 5 paced, 20 non paced). 16 patients died (14,2 p. 100): mortality was relatively early (average 11,7 months) and higher in patients with pacemakers (15/16); the causes of death were acute heart failure (8 cases), and cerebral vascular accident (3 cases). In the surviving paced patients neurological symptoms completely regressed. In this series, the life expectancy of patients with sinus node dysfunction seemed to depend mainly on the state of their myocardium, but the functional prognosis was clearly improved by cardiac pacing.

Adolescent↗
PubMed1979

[Syncope and transient neurologic deficits of undetermined origin. Clinical and electrophysiological correlations].

A consecutive series of 140 patients who presented either with syncope or transient neurological deficit of undertermined cause underwent electrophysiological investigation. The patients were classified in 3 groups: Group I comprising 55 patients having presented "true syncope"; Group II comprising 42 patients with "false vertigo"; and Group III comprising 43 patients in whom a transient neurological deficit had been observed. Globally, the investigations were positive in 58 patients (41,4%). Paroxysmal atrioventricular block was recorded in 21 cases (15%), sinus node dysfunction in 34 cases (2,1%). Permanent pacing was instituted in 57 patients. The correlation between the results of electrophysiological investigation and the clinical symptomatology showed a highly significant difference between Groups I and II where the results were positive in 57% cases, and Groupe III where 93% of the investigations were negative.

Adolescent↗
PubMed1975

[Recording of conduction tissue potentials in intraventricular conduction disorders. (apropos of 147 patients)].

147 patients, 31 controls and 116 patients with intraventricular conduction disturbances, have been submitted to an endocardial investigation: HR lengthening in case of bundle-branch block indicates a low diffusion of the conduction disturbances and has a pejorative signification. The most important legthenings of this interval have been observed in the cases with delay in the common trunk of His bundle: -- In case of trunkular delay, 66% of the patients have a HR interval longer than 80 msec, and the average value of HR is 82 msec. -- In the absence of obvious trunkular delay, 8% of the patients only have a HR interval longer than 80 msec, with an average value of 67 msec. For these latter patients no branch potential was recorded. -- In some cases one is certain of the presence of a conduction disturbance of both branches and the HR value then never exceeded 60 msec. -- Branch potential recording makes it possible to determine the site of the conduction disturbance of the branch and show mild variations of the HR interval and of both components.

Action Potentials↗
PubMedDate not supplied

Functional endoscopic sinus surgery for isolated sphenoid sinus disease.

BACKGROUND: This article reviews 12 cases of isolated sphenoid sinus disease: chronic inflammatory sinusitis (7), mucoceles (2), aspergillus lesions (2), and isolated polyp (1). METHODS: Criteria for diagnosis were based on clinical symptoms, nasal endoscopic evaluation, and computed tomography (CT). Magnetic resonance imaging was used only in cases of bone erosion and when patients presented with vision problems. All patients were treated by functional endoscopic sphenoidotomy. Any postoperative complications were noted. CONCLUSION: The reported good results, on the basis of regression of functional symptoms and with nasal endoscopic and CT evaluation, suggest that intranasal sphenoidotomy under endoscopic control is a safe and effective method of treatment of nonmalignant isolated sphenoid disease. The mean follow-up is 26 months.

Adult↗
PubMedDate not supplied

Central retinal vein occlusion and sudden deafness: a possible common pathogenesis.

CASE REPORT: A 31-year-old woman complained of blurred vision in the right eye due to a well-perfused central retinal vein occlusion (CRVO) and two months later, of sudden deafness (SD) in her right ear. Her visual acuity and hearing recovered almost completely within a few months. Medical evaluation disclosed the combination of slight coagulation abnormalities (moderate decrease in protein S, slightly elevated lipoprotein (a)), and elevated fibrinogen, with plasma hyperviscosity. DISCUSSION: The occurrence of CRVO then SD suggests that the same underlying conditions can be considered as risk factors for both diseases and shows up some similarities in the pathogenesis of these acute impairments of microvascular blood flow in the retina and the cochlea.

Adult↗