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Biomedical subjects

L Powell

Publications and source records attributed to L Powell.

62 records · Page 4Linked to original sources

The potential histogenic relationship of the peripheral nerve to synovioma.

The belief that synoviomas differentiate from the synovial membrane has been widely accepted. Absolute proof is lacking, mainly because precancerous synovial atypia has not been documented in human tissue. During the last 50 years, pain has emerged as one of the significant features of synovioma, occurring very early in the course of the disease in some patients. Gross relationship to nerve, cumulative histological data, and theoretical relationships with three other cancers of neural origin suggest the nerve sheath as an alternate parent tissue for synovioma. Three cases illustrating nerve involvement are included.

Adult↗

Smoking artifacts: factors of source evaluation.

Responses from 323 students in communication indicated that credibility factors associated with nonverbal smoking artifacts are not the same as those associated with verbal stimuli; a character factor was absent for nonverbal stimuli. Verbosity, however, may permit inferences regarding potential verbal behavior.

Character↗

Cholestatic jaundice associated with captopril therapy.

Captopril has attained widespread use as an effective agent in the treatment of heart failure and hypertension. Dermatological, renal and haematological toxicity associated with its use has been widely described and is usually well recognized. There have been comparatively few reports implicating it as causing hepatic drug reactions. Most descriptions have emphasized strongly cholestatic features, although a mixed hepatocellular cholestatic picture and predominant hepatocellular reactions have been reported. Between November 1972 and June 1990 only five cases of possible Captopril-associated hepatic dysfunction were reported to the Australian Adverse Drug Reaction Advisory Committee. Cases reported suggest equal sex distribution, latent period to development of abnormality between 1 week and 20 months, with slow resolution of jaundice and biochemical abnormality from 1 week to 6 months after withdrawal of the drug. One case of hepatic coma and death with massive acute hepatic necrosis on biopsy has been reported. Not uncommonly the accompanying systemic features suggest a syndrome of drug hypersensitivity. We report a case of Captopril-induced cholestatic jaundice in which the abnormality occurred 2 weeks after commencement of the drug and resolved slowly upon discontinuation. The case illustrates two important points: first, the importance of taking a full history, obtaining detailed information about previous drug administration in patients admitted with jaundice; and second, in the case of Captopril-induced liver disease, the jaundice may persist for many weeks after drug withdrawal.

Aged↗

[French version of the video structured interview designed for type A behavior pattern assessment].

The current controversy on the predictive value of the Type A Behavior Pattern (TABP) as a coronary risk factor brought into a reconsideration of the assessment methods of this pattern. The Video Structured Interview (VSI) is a scoring method of TABP by a trained investigator, consisting of a rating scale based both on the content of the answers and on the psychomotor signs, with regard to the two main components of the TABP: sense of time urgency and hostility. The VSI appears a more objective instrument than self-assessment questionnaires, avoiding the bias of denial, a coping mechanism widely used by type A subjects. The VSI proved more sensitive and more specific than the self-assessment methods or the structured interview (SI), the initial instrument aimed to assess TABP among coronary risk patients in american populations. We here present the french version of the VSI, the technical modes of the interview and the principles of this scoring method, in order to introduce in France its use in further studies related with coronary risk factors.

Coronary Disease↗