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Biomedical subjects

M Andersen

Publications and source records attributed to M Andersen.

At least 73 records · Page 4Linked to original sources
PubMed1986

Transcervical thymectomy in patients with nonthymomatous myasthenia gravis.

Transcervical thymectomy was performed during a 13-year period in 21 patients with nonthymomatous myasthenia gravis. Follow-up showed that only eight patients benefited from the operation. These eight were among the younger patients in the series. This observation is discussed, and also the theoretic background for early thymectomy. The transsternal approach is recommended for thymectomy in elderly patients, but the transcervical may be considered for younger patients, although transsternal reexploration is advocated if this first operation should fail.

Adolescent↗
PubMed1985

Bilateral orbital floor fractures.

Nineteen patients operated on suspicion of bilateral orbital floor fractures are described. All of the patients had severe comminute midfacial fractures. Orbital floor deficiency requiring transplantation was found in 68% of the cases, demonstrating homolateral maxillary and zygomatic fractures. On the basis of their findings, the authors recommend acute reposition of the fractures and routine exploration of the orbital floor in the case of deficiencies requiring transplantation and in cases of homolateral combined maxillary and zygomatic fractures.

Adolescent↗
PubMed1985

Unilateral orbital floor fractures.

Ninety patients operated on, on suspicion of unilateral orbital floor fractures are described. Age, sex, and etiology are given. Operative indication is examined and related to the operative findings. Fifty-six of the patients had fractures requiring transplantation, 24 had fractures which did not. Ten patients had no fractures. Only autogenous bone graft was used. The patients were examined three months and one to 11 years postoperatively (questionnaire). Of 82 operated patients who answered the questionnaire diplopia was found in eight, enophthalmos in two, hypesthesia in 18, reduced mobility in four and sinuitis in four. Preoperative X-ray: Three patients showed false positive X-ray findings. In 19 patients with false negative X-ray findings 12 required transplantation. Twenty-five tomographed patients showed fractures, two of which proved to be false positives. In eight patients with negative tomographical findings, fractures were found, seven of which required transplantation. The frequency of complications assessed in relation to the time of operation shows no significant difference, if surgery takes place within seven days of injury. Surgery performed later than this seems to produce more cases of chronic sinuitis.

Adolescent↗
PubMed1983

Sequelae of capillary hemangiomas of the eyelids and orbita.

Five children earlier treated for capillary hemangiomas of the eyelid and orbit have been examined for cosmetic and functional results of treatment as well as their ocular status. In all cases the optic axis has been obstructed for a varying period in the first year of life. Two patients got exceedingly amblyopic and 3 patients moderately amblyopic. The cosmetic result is satisfactory in three cases. Different treatments have been used in these cases, i.e. surgical, X-ray and corticosteroid. The most essential aspect of the treatment is to open the eyeslit so much that the optic axis is free and in this way try to prevent amblyopia.

Amblyopia↗
PubMed1982

Mutagenic action of methyl 2-cyanoacrylate vapor.

Alkyl 2-cyanoacrylate adhesives were tested for mutagenicity in Salmonella typhimurium strains TA98, TA100, TA1535 and TA1538. Both a normal spot test and a spot test specially designed to test volatile compounds were used. The adhesives were also tested in the plate incorporation assay. These investigations showed that methyl 2-cyanoacrylate adhesives are mutagenic in strain TA100. The spot test for volatile compounds showed that it is the vapors from the methyl 2-cyanoacrylate monomer that are responsible for the mutagenic effect. One can conclude that working with methyl 2-cyanoacrylate adhesives entails exposure to vapors with a mutagenic effect and may therefore pose a carcinogenic hazard. Because the adhesives are used in industry, their mutagenic effect has a special importance in work environment.

Cyanoacrylates↗
PubMed1982

Preoperative starvation and blood glucose concentrations in children undergoing inpatient and outpatient anaesthesia.

Blood glucose concentrations were measured in 82 children undergoing inpatient anaesthesia and in 46 children undergoing anaesthesia as outpatients. The children were aged between 6 months and 9 yr. Outpatients were fasted from bedtime, while inpatients were randomly allocated to two groups. In group A the children were fasted from bedtime, whereas in group B the children were fed 6 h before anaesthesia. There was no difference in mean blood glucose concentration between the fasted inpatients and outpatients nor between children younger than, or older than, 4 years of age. A blood glucose concentration of less than 40 mg dl-1 was found in only one of the fasted children (1%). The mean blood glucose concentration was greater in group B than A, but only significantly so for children older than 4 yr. It is concluded that to minimize the risks of hypoglycaemia and inhalation of vomit on induction of anaesthesia children older than 6 months should be fasted overnight and operated on in the morning.

Ambulatory Surgical Procedures↗