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Biomedical subjects

Rajiv Singh

Publications and source records attributed to Rajiv Singh.

7 recordsLinked to original sources

Parkinson's disease and driving ability.

OBJECTIVES: To explore the driving problems associated with Parkinson's disease (PD) and to ascertain whether any clinical features or tests predict driver safety. METHODS: The driving ability of 154 individuals with PD referred to a driving assessment centre was determined by a combination of clinical tests, reaction times on a test rig and an in-car driving test. RESULTS: The majority of cases (104, 66%) were able to continue driving although 46 individuals required an automatic transmission and 10 others needed car modifications. Ability to drive was predicted by the severity of physical disease, age, presence of other associated medical conditions, particularly dementia, duration of disease, brake reaction, time on a test rig and score on a driving test (all p<0.001). The level of drug treatment and the length of driving history were not correlated. Discriminant analysis revealed that the most important features in distinguishing safety to drive were severe physical disease (Hoehn and Yahr stage 3), reaction time, moderate disease associated with another medical condition and high score on car testing. CONCLUSIONS: Most individuals with PD are safe to drive, although many benefit from car modifications or from using an automatic transmission. A combination of clinical tests and in-car driving assessment will establish safety to drive, and a number of clinical correlates can be shown to predict the likely outcome and may assist in the decision process. This is the largest series of consecutive patients seen at a driving assessment centre reported to date, and the first to devise a scoring system for on-road driving assessment.

Age Factors↗

Alphabetical prejudice in team discussions (or would Zebedee ever get seen on a ward round).

PURPOSE: To ascertain whether the order in which patients are discussed in a team meeting determines the time spent on discussion. DESIGN: Prospective study over 18 consecutive multidisciplinary team meetings. SETTING/SUBJECTS: Multidisciplinary team meetings on a Brain Injury Rehabilitation Unit, Edinburgh. MAIN OUTCOME MEASURE: Time spent discussing each case. RESULTS: Patients discussed early on received 3-4 minutes more discussion time than those later on. This was highly significant on a one-way analysis of variance (P < 0.001). CONCLUSIONS: Preferential treatment of patients who come at the start of the team meeting is a real phenomenon. Such alphabetical prejudice, where it exists, should be addressed.

Bias↗

Pulmonary targeting of sustained release formulation of budesonide in neonatal rats.

Systemic corticosteroids are widely used for the treatment/prevention of chronic lung disease (CLD) in premature infants. The use of the inhalation route for delivering corticosteroids has been widely recognized, however so far pre-term babies continue to be treated with oral glucocorticoids, such as dexamethasone. We hypothesize that the pulmonary administration of sustained release formulations of inhaled corticosteroids to pre-term infants will result in a higher benefit/risk ratio as compared to traditional inhalation therapy. To achieve a slow release formulation budesonide particles were coated with a very thin film of polylactic acid using a pulse laser ablation technique. Coated material was characterized with respect to the dissolution behavior and particle size. Ex vivo receptor binding studies were performed to monitor the cumulative lung, liver and brain receptor occupancies after adminstration in neonatal (10-11 days old) rats after intratracheal instillation of either uncoated budesonide or poly (l-lactic acid) (PLA) coated budesonide. The mean dissolution timed for the uncoated and the polymer coated formulations were 1.2 +/- 0.5 and 4.7 +/- 0.1 h, respectively (p < 0.05). No significant differences in the respirable fraction were found between coated and uncoated formulation (p>0.05). The average receptor occupancies in the lung, liver and brain after administration of uncoated budesonide were 58.4 +/- 12.9, 56.4 +/- 6.8 and 38.3 +/- 6.7%, respectively. However, after administration of PLA coated budesonide, the average AUC estimates in the lung, liver and brain were 75.8 +/- 3.7%, 46.6 +/- 14.5 and 29 +/- 7, respectively. The results from our study suggest sustained receptor occupancy in the lungs of neonatal rats after administration of PLA coated budesonide results in lower systemic exposure (as indicated by low liver receptor occupancy). The data strongly underscore the urgent need to develop sustained release pulmonary-targeted delivery systems of corticosteroids for the treatment of CLD in pre-term infants. The administration of inhaled corticosteroids using targeted drug-delivery systems will potentially result in higher local effects and a reduction in systemic exposure.

Animals↗

Myasthenia gravis masquerading as post-poliomyelitis syndrome.

A 79-year-old man with previous bulbar poliomyelitis developed dysphagia and was diagnosed as having post-polio syndrome. Over 2 years, his swallowing deteriorated and he suffered an aspiration pneumonia. Only after the subsequent development of fatigue and facial weakness was myasthenia gravis diagnosed. Diagnostic criteria for post-polio syndrome include the exclusion of all other neurological conditions such as myasthenia gravis. Moreover, in any instance where a patient develops new symptoms, it is advisable to reconsider the original diagnosis.

Aged↗

Predicting those who will walk after rehabilitation in a specialist stroke unit.

OBJECTIVE: To establish whether the ability to use a wheelchair shortly after a stroke or continence are related to the likelihood of walking by time of discharge. DESIGN AND SUBJECTS: An observational study in patients admitted to a stroke rehabilitation unit for under-65s over a three-year period. METHODS: Functional Independence Measure (FIM) subscores for walking were examined on all patients at time of admission and discharge. Walking was defined by an FIM > or = 5 in that section. Comparisons were then made between those who could self-propel a wheelchair within a week of admission with those who could not. Continence (defined by an FIM subscore of > or = 6 in that category) was also correlated to walking at discharge. MAIN OUTCOME MEASURE: Walking at time of discharge defined by an FIM > or = 5 in that section. RESULTS: From 393 admissions, 135 were excluded because they could already walk (FIM subscore > or = 5 in that particular section) and three died during their admission. Out of the remaining 255 patients, 108 could self-propel on admission and 147 could not. While 105 (97%) of the self-propellors could walk by time of discharge, only 91 (62%) of the non-propellors could do so (chi2 = 42.237, df = 1, P < 0.001, odds ratio (OR) 21.54 (6.52-71.51)). Although continence also predicted improved likelihood of walking, this was at a lower level of significance and correspondingly lower odds ratio (chi2=5.894, df = 1, P= 0.015, OR 1.94 (1.13-3.32)). CONCLUSIONS: The ability to self-propel a wheelchair shortly after a stroke is a significant predictor of eventually being able to walk. Our data suggest that it is even more significant than continence, which is the most consistent predictor previously found.

Humans↗

Access inequalities addressed by audit.

The Disability Discrimination Act (1995) protects disabled people from discrimination in access to services, facilities and goods as well as in education and employment. All hospitals have an inherent duty to enable access to services but this will now be enshrined in law. As the health sector has most contact with disability, it may be expected that most hospitals would already be in a good position to comply with the Act, especially one treating many patients with disability. However we identified many problems in a rehabilitation hospital setting by means of a simple access audit in March 2004. Recommendations were set out and by March 2005 considerable improvements had been made costing Pound 100,000. Although many necessary changes will be expensive, not all problems identified require costly correction. Many simply involve a change in staff attitudes and practices. We recommend that all hospitals start to identify the changes needed under the Act by means of a simple access audit that can be carried out by hospital staff with no specialist equipment.

Architectural Accessibility↗