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Biomedical subjects

S Luttrell

Publications and source records attributed to S Luttrell.

9 recordsLinked to original sources
PubMed1997

Screening for alcohol misuse in older people.

OBJECTIVES: To evaluate whether the CAGE, MAST-G or an abnormally high MCV are effective screening instruments for alcohol misuse and if not to devise a new instrument. DESIGN: Questionnaire survey of randomly selected patients. SETTING: Acute admission wards of two district general hospitals. PERIOD: 9 months. SUBJECTS: Randomly selected patients, aged 65 and over, admitted as emergencies. MAIN OUTCOME MEASURES: Excessive alcohol intake, alcohol dependence. RESULTS: The sensitivities of the CAGE, MAST-G and an abnormally high MCV for excess alcohol intake and alcohol abuse are low, ranging from 0.13 to 0.54. CONCLUSION: The results confirm previous UK studies which indicate that the CAGE and an abnormally high MCV are poor screening instruments for alcohol misuse in older patients and also indicate that the MAST-G is an insensitive screening instrument. A new two-step instrument with five questions in total was generated. This requires further validation.

Aged↗
PubMed1996

Limiting risks by curtailing rights: a response to Dr Ryan.

It has been argued that the inherent risks of advance directives made by healthy people are disproportionate to the potential benefits, particularly if the directive is implementable in cases of reversible mental incapacity. This paper maintains that the evidence for such a position is lacking. Furthermore, respect for the principle of autonomy requires that individuals be permitted to make risky choices about their own lives as long as these do not impinge on others. Even though health professionals have an obligation to try and ensure that patients have appropriate information about possible future treatment options, they cannot predict and describe every eventuality but nor can they disregard firm decisions knowingly made on the basis of incomplete information by competent adults. To attempt to do so would be to reinstate notions of medical paternalism which are contrary to current public expectations.

Adult↗
PubMed1983

Effect of low doses of heparin on the plasma binding of phenytoin and prazosin in normal man.

The effect of low doses of heparin on the binding of phenytoin and prazosin to plasma proteins was evaluated in four normal subjects. Heparin activates the hydrolysis of triglycerides in plasma. The ensuing increase in non-esterified fatty acids (NEFA) was more marked in vitro than in vivo and increased the free fraction (FF) of phenytoin and prazosin in plasma. The higher FF caused a change in the plasma to whole blood ratio (P/B ratio) of both drugs. The changes in FF and P/B ratio after heparin were small, but could be of significance in pharmacokinetic studies.

Adult↗