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Biomedical subjects

S Burgan

Publications and source records attributed to S Burgan.

7 recordsLinked to original sources
PubMed1997

[Thrombolysis in acute myocardial infarct in everyday clinical practice].

We prospectively included in a database all thrombolyzed acute transmural myocardial infarction patients admitted to our hospital from November 1986 to September 1995. Six hundred and twenty-seven patients (497 males) with a mean age of 61 +/- 12 years (range 26-88 years) were included. 87% were having their first acute myocardial infarction. Different thrombolytic regimens were applied in the emergency room but the vast majority (92%) received t-PA. The median delay between the onset of pain and admission was 2 h 0 min (10 min-22 h). The median admission to treatment time was 40 min (5 min-6 h 20 min). The latter has been shortened (median 55 min from 1986 to 1989 versus 35 min from 1990 to 1995, p < 0.05) during the study period. The rate of intracerebral hemorrhage was 2.4% (confidence interval 1.1-3.5%) and no significant predictor could be found, although patients with cerebral bleeding tended to be slightly older (66 +/- 9 years vs 61 +/- 13 years, p = ns). The rate of false diagnosis was only 4.6%, even when patients with a final diagnosis of unstable angina and/or aborted acute myocardial infarction were included. The in-hospital mortality was 8.8%, a rate similar to those reported in the literature. Using multivariate analysis, negative prognostic factors were higher age (p < 0.001), advanced Killip class at admission (p < 0.001) and elevated peak CPK levels (p < 0.001). These results confirm that thrombolysis for acute myocardial infarction in the emergency room can be done with a short admission-to-treatment time and with an acceptably low rate of false diagnosis. However, our intracerebral hemorrhage rate was clearly higher than generally reported in the literature and may be explained by a different patient selection from that in large randomized studies.

Adult↗
PubMed1995

Acute embolic carotid occlusion after cardiac catheterization: effect of local intra-arterial urokinase thrombolysis.

A 64-year-old woman developed a severe embolic cerebral attack with total left hemiplegia approximately 30 hours after cardiac catheterization for mitral stenosis. She underwent intra-arterial thrombolysis of the right internal carotid artery four and one-half hours after the onset of neurologic deficit with subsequent recanalization of the occluded vessel and near complete neurologic recovery.

Acute Disease↗
PubMed1991

Vital dye labelling demonstrates a sacral neural crest contribution to the enteric nervous system of chick and mouse embryos.

We have used the vital dye, DiI, to analyze the contribution of sacral neural crest cells to the enteric nervous system in chick and mouse embryos. In order to label premigratory sacral neural crest cells selectively, DiI was injected into the lumen of the neural tube at the level of the hindlimb. In chick embryos, DiI injections made prior to stage 19 resulted in labelled cells in the gut, which had emerged from the neural tube adjacent to somites 29-37. In mouse embryos, neural crest cells emigrated from the sacral neural tube between E9 and E9.5. In both chick and mouse embryos, DiI-labelled cells were observed in the rostral half of the somitic sclerotome, around the dorsal aorta, in the mesentery surrounding the gut, as well as within the epithelium of the gut. Mouse embryos, however, contained consistently fewer labelled cells than chick embryos. DiI-labelled cells first were observed in the rostral and dorsal portion of the gut. Paralleling the maturation of the embryo, there was a rostral-to-caudal sequence in which neural crest cells populated the gut at the sacral level. In addition, neural crest cells appeared within the gut in a dorsal-to-ventral sequence, suggesting that the cells entered the gut dorsally and moved progressively ventrally. The present results resolve a long-standing discrepancy in the literature by demonstrating that sacral neural crest cells in both the chick and mouse contribute to the enteric nervous system in the postumbilical gut.

Animals↗
PubMed1990

Gallstone ileus.

Thirty-seven patients (33 women and four men, median age 78 years) were operated on for gallstone ileus over a 12-year period with a median follow-up of 6.2 years. Twenty-three patients (62 per cent) had serious concomitant diseases. Plain abdominal radiographs performed at admission were diagnostic in only 17 patients (46 per cent) and other procedures such as ultrasonography, gastrointestinal contrast studies and computed tomographic scan were required in ten patients (27 per cent). The diagnosis was made before operation in 27 patients (73 per cent) but in only 17 (46 per cent) at admission. Obstructing stones were located in the terminal ileum in 27 patients (73 per cent), in the proximal ileum or jejunum in five (14 per cent), in the duodenum in two (5 per cent), and in the colon in three (8 per cent). In six instances (16 per cent), more than one stone was involved. Cholecystduodenal fistula was the most frequent fistula type (n = 25, 68 per cent), followed by cholecystcolonic (n = 2, 5 per cent) and cholecystduodenocolonic (n = 2, 5 per cent) types. The site of the fistula was not established in the other eight instances. A one-stage procedure consisting of the removal of the impacted stone, fistula repair and cholecystectomy was performed in eight patients, two of whom died. A second group of six patients underwent a two-stage procedure consisting of enterolithotomy followed by elective biliary surgery, with no mortality. Removal of impacted stones was the only surgical treatment in the remaining 23 patients, with five deaths. Operative mortality and morbidity rates associated with the initial procedure did not differ significantly among the three therapeutic groups, which were comparable in terms of patient age, associated concomitant diseases and APACHE II score. However, later biliary complications were prominent in patients treated only by enterolithotomy. These results support the view that a one-stage procedure is, when feasible, a valid option and may be the procedure of choice. When local or surgical conditions argue against a one-stage procedure, biliary surgery at a second stage should be considered, if residual stones are present. In poor risk patients, non-operative methods should be considered.

Aged↗
PubMed1990

Modulation of actin isoform expression in alveolar myofibroblasts (contractile interstitial cells) during pulmonary hypertension.

Lungs of 37 patients with pulmonary hypertension (PHT), 5 normal human lungs, and 30 normal rat lungs, were studied using immunohistochemical stainings for actin, alpha-smooth muscle (alpha-SM) actin and desmin. The type of PHT was determined on clinicopathologic grounds (in 17 cases by catheterism); 20 patients had precapillary and 17 postcapillary PHT. In normal lungs, myofibroblasts, ie, contractile interstitial cells (CIC), distributed in alveolar septa, were not stained by alpha-SM actin antibodies. Only around the venules, were cells labeled by this antibody present. Furthermore, there were bundles of alpha-SM actin-positive cells around the openings of air sacculi into the alveolar ducts. In precapillary PHT, the distribution and immunostaining properties of interstitial cells remained unchanged; alpha-SM actin-positive cells were observed in thickened arterial intima and in plexiform lesions. In postcapillary PHT secondary to heart failure, to mitral stenosis, or in veno-occlusive disease, many interstitial cells in the alveolar septa were decorated by alpha-SM actin antibodies but not with desmin. The authors propose that, in postcapillary PHT, mechanical stretch due to capillary congestion may be responsible for the generation of cells that express an actin isoform associated with smooth muscle.

Actins↗
PubMed1989

Serum enzymes and other laboratory tests in acute pancreatitis.

This review evaluates selective enzymes and blood tests available for the diagnosis and prognosis of acute pancreatitis. It is concluded that serum amylase and lipase measurements represent the best available diagnostic methods. Newer alternative assays still require careful evaluation.

Acute Disease↗