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R H Mindham

Publications and source records attributed to R H Mindham.

At least 19 recordsLinked to original sources
PubMed2000

A 10-year study of the incidence of and factors predicting dementia in Parkinson's disease.

OBJECTIVE: To compare the incidence of dementia in PD with that of a control group without PD, and to assess the relationship between dementia and other features of PD. METHODS: The authors recruited 83 patients with PD and 50 controls, all without dementia at initial assessment, and assessed them at regular intervals over a maximum period of 122 months. Dementia was diagnosed according to objective criteria, and included a judgment by researchers masked to subject group and to variables putatively associated with dementia. RESULTS: Seventeen patients fulfilled dementia criteria; no controls did so. The cumulative proportion of PD patients becoming demented by 112 months was 0.38 (95% CI 0.20 to 0.55), or 42.6 cases per 1000 years of observation. Univariate analyses showed that incident dementia in patients with PD was associated with older age at entry into the study, greater severity of neurologic symptoms, longer duration of PD, greater disability, and male sex. The association of age at onset of PD with incident dementia was of only borderline significance. Multivariate analysis found that age at entry into the study and severity of motor symptoms were significant predictors of dementia but duration of PD and age at onset of PD were not. CONCLUSIONS: Dementia in PD is likely to reflect interaction of the neuropathology of the basal ganglia and age-related pathology. The findings do not support the division of PD into early and late-onset cases.

Age of Onset↗
PubMed1992

A controlled, longitudinal study of dementia in Parkinson's disease.

Serial assessments of cognition, mood, and disability were carried out at nine month intervals over a 54 month period on a cohort of 87 patients with Parkinson's disease (PD) and a matched cohort of 50 control subjects. Dementia was diagnosed from data by rigorously applying DSM-III-R criteria. Initially, 6% (5/87) PD patients were demented, compared with none of the 50 control subjects. A further 10 PD patients met the dementia criteria during the follow up period; this was equivalent, with survival analysis, to a cumulative incidence of 19%. With the number of person years of observation as the denominator, the incidence was 47.6/1000 person years of observation. None of the control subjects fulfilled dementia criteria during the follow up period. The patients with PD who became demented during follow up were older at onset of Parkinson's disease than patients who did not become demented, had a longer duration of Parkinson's disease, and were older at inclusion to the study.

Aged↗
PubMed1992

Diagnoses are not diseases.

The psychiatric community seems determined to ground its medical legitimacy on principles that confuse diagnoses with disease. If mental illnesses are diseases of the CNS, they are diseases of the brain, not the mind. If mental illnesses are the names of (mis)behaviour, they are forms of behaviour, not diseases. Psychiatric metaphors have the same role in medicine as religious metaphors have in theology. Religion is, among other things, the institutionalised denial of a finite life. Psychiatry is, among other things, the institutionalised denial of the tragic nature of life: individuals who want to reject the reality of free will and responsibility can medicalise life, and entrust its management to health professionals. Psychiatrists have succeeded in persuading the scientific community, the courts, the media, and the general public that the conditions they call mental disorders are diseases, that is, phenomena independent of motivation or will. The more firmly psychiatrically based ideas take hold of the collective American mind, the more foolishness and injustice they generate. Long ago, the law makers agreed to let psychiatrists literalise the metaphor of mental illnesses. Thus, the Americans With Disabilities Act (AWDA), scheduled to be fully implemented by July 1992, covers claustrophobia, personality problems, and mental retardation, though unlike DSM-III-R it excludes kleptomania, pyromania, compulsive gambling, and transvestism. The literal language of psychiatry allows motivated actions to be called 'disease'. Other examples of behaviour for which psychiatrists have disease names, and which AWDA implicitly accepts as genuine diseases, include dysmorphophobia, multiple personality disorder, frotteurism, hypoactive sexual desire disorder, and fractitious disorder with physical symptoms.(ABSTRACT TRUNCATED AT 250 WORDS)

Adaptation, Psychological↗
PubMed1991

Cognitive impairment and dementia in Parkinson's disease: a controlled study.

The performance of 47 patients with Parkinson's disease on a battery of tests of cognition, motor function, disability and mood was compared with the performance of 47 healthy control subjects who were matched to the patients on the basis of age, sex and pre-morbid IQ. An increased prevalence of impairment over a range of cognitive functions was observed in the Parkinson's disease patients as compared with their matched controls. The differences between the Parkinson's disease patients and controls could not be accounted for by factors such as depressed mood, effects of medication or motor impairment. Our findings are discussed in relation to the methodology of previous studies in this area and to the need for a comprehensive clinico-pathological longitudinal study.

Activities of Daily Living↗
PubMed1990

Parkinson's disease and driving ability.

There is no guidance available for clinicians who have to decide on the fitness to drive of patients who have Parkinson's disease (PD). A computerised driving simulator was used to examine the effect of PD on driving ability. Ten drivers with idiopathic PD were tested as well as 10 age and sex-matched healthy drivers and four PD drivers who were no longer driving. Both the simulated driving reaction time and the accuracy of steering were significantly impaired in the PD group compared with the controls. Both of these measures correlated significantly with the severity of PD as measured on Webster's rating scale. Caution may be needed if the findings of simulated tests are to be extrapolated to real driving. However, our findings show that the severity of disability in PD as measured by Webster's rating scale may assist in assessing the fitness of a PD patient to drive.

Adult↗
PubMed1989

The significance of stupor in the long-term outcome of chronic schizophrenia.

The admission records of 271 long-stay chronic schizophrenic patients, resident in a large psychiatric hospital, were examined in order to identify those who had presented in stupor at the onset of their illness. Twelve patients were found (ten men and two women). When compared, in terms of current mental state and behaviour, with a similar sample of schizophrenics in whom stupor had been absent, significant differences between the two groups were detected, with those presenting in stupor demonstrating a less favourable outcome.

Adult↗
PubMed1988

Antidepressive effect of amitriptyline treatment with plasma drug levels controlled within three different ranges.

Seventy-four depressed patients were treated with amitriptyline for 4-6 weeks. Their doses were individually adjusted to maintain the sum of the plasma levels of amitriptyline (AT) and nortriptyline (NT) within one of three different ranges, randomly allocated. Allowance was made for individual plasma binding of the drugs. In the 50 patients between 25 and 65 years of age, the antidepressive response at low plasma drug levels was somewhat poorer than at medium or high levels, which were equally effective. In this age group an association was found between outcome and the individual rate of AT metabolism, expressed as "reciprocal clearance" (RC), the steady-state plasma concentration of AT plus NT divided by the daily AT dose. Good antidepressive outcome was associated with high RC. The implications of these findings for patient treatment and for the interpretation of other studies are discussed. The 18 patients between 65 and 80 years of age showed no significant differences between the effectiveness of treatment at different plasma drug levels, and no significant associations between outcome and RC.

Aged↗
PubMed1987

Abnormal intestinal permeability. An aetiological factor in chronic psychiatric disorders?

Abnormal intestinal absorption has been suggested as an aetiological factor in schizophrenia. A procedure for investigating intestinal permeability was carried out in a group of chronic psychiatric in-patients. A proportion of the subjects studied showed abnormal intestinal permeability which could not be attributed to established bowel disease. Patients who were receiving neuroleptic but not anticholinergic drugs were those most often showing abnormal intestinal permeability. This work is at an early stage of development but preliminary findings suggest that further investigations should be carried out to establish the circumstances in which changes in intestinal permeability may be associated with mental illness.

Celiac Disease↗