PubMed Health⌕ Search

Biomedical subjects

A Ainsworth

Publications and source records attributed to A Ainsworth.

15 recordsLinked to original sources
PubMed2002

Association of British Clinical Diabetologists (ABCD): survey of specialist diabetes care services in the UK, 2000. 2. Workforce issues, roles and responsibilities of diabetes specialist nurses.

AIM: To examine the provision and role of diabetes specialist nurses (DSNs), and the content of patient education programmes in the UK. METHOD: A postal survey of secondary care providers of diabetes services in the UK in 2000. RESULTS: Following two reminders, a 77% response rate demonstrated 2.5 (median) whole time equivalent DSNs per 250 000 population, with only 13% of centres meeting the recommended staffing level of four per 250 000 population. The vast majority carried out work both in hospital and in the community, the proportion a reflection of who employed and managed staff. There was a wide variation in the qualifications required and the nursing gradings of DSNs, and regional variation in the number of grade I nurses, with the greatest proportion based in the South-east of England. The vast majority (96%) provided patient education, and where it existed (in 60% of responses), were the major providers of a patient help line (90%). Although key providers of patient education, there had been no specific education for this task in over 20% of responses. There was broad consistency in the topics covered at educational sessions, although advice on footwear (76%) and home urine glucose monitoring (73%) were least frequently documented. The issuing of literature and cards for patient use was also very variable. Over 25% of bids for diabetes service improvement were for additional DSNs, but only 48% of these were successful. CONCLUSIONS: There has been an improvement in staffing levels of DSNs over the last 10 years but the numbers are many fewer than recommended in national strategy documents, with evidence that despite expansion being given a high profile, such efforts are often unsuccessful. There was also evidence of considerable variation in the qualifications and gradings of DSNs throughout the UK and indeed in their day-to-day roles, and the content of patient education programmes. This suggests the need for a nationally co-ordinated approach to training and recruitment.

Diabetes Mellitus↗
PubMed2002

Association of British Clinical Diabetologists (ABCD): survey of specialist diabetes care services in the UK, 2000. 4. Dietetic services and nutritional issues.

AIMS: To examine the provision of, and variations in, dietetic services for diabetes in secondary care in the UK. METHOD: A postal survey of all secondary care providers of diabetes services. RESULTS: There was a 77% response rate. A dedicated dietician supported diabetes services in 73% of responses, but only 45% were able to see newly diagnosed patients within 1 month. Only 3% of responses documented that dietetic services provided the recommended minimum 22 h weekly input to diabetes care, and an annual dietetic review was said to be available in 15%. An opportunity for more frequent visits was most likely if there was poor glycaemic control (78% of responses), particularly when services were provided by a dedicated diabetes dietician. Although dieticians frequently provided input to patient education (88%), specific training for this purpose and provision for continuing education of these individuals was less common (14% and 63%, respectively). Nutritional guidelines were available in 74%, but only 31% of responses documented current guidelines on obesity management. Of bids for additional dietetic resources, only 21% had been successful. There was evidence of regional variation in service provision, and no greater provision of dietetic services in areas with a large South Asian population and an expected high prevalence of diabetes. In broad terms, dietetic services for diabetes care had not altered in comparison with a similar survey in 1997. CONCLUSIONS: The level of dietetic support of secondary care diabetes services remains dramatically lower than recommended in advisory documents, and appears to have changed little over the last 3 years. This is compounded by marked regional differences, and was no better in areas with a higher than average prevalence of diabetes. The survey also highlights the need for more co-ordinated and structured education and training of dieticians as well as more consistency in nutritional guidelines.

Diabetes Mellitus↗
PubMed2002

Association of British Clinical Diabetologists (ABCD): survey of specialist diabetes care services in the UK, 2000. 3. Podiatry services and related foot care issues.

AIM: To examine the provision of, and variations in, podiatry and other services for diabetic foot care in the UK. METHOD: A postal survey of secondary care providers of diabetes services in the UK in 2000. RESULTS: Following two reminders a 77% response rate was achieved. The responses indicated that 97% had a state-registered podiatrist attached to the service, providing three (median) sessions each week for diabetes care, although only 44% had availability at all diabetic clinics, and only 3% had availability at paediatric diabetic services. Podiatry access at all diabetic clinics increased the likelihood of associated preventative as opposed to reactive ('trouble shooting') care (P < 0.05). All individuals with feet at 'high risk' of ulceration had access to 'at least 2 monthly review' in 15% of trusts, and with active foot ulceration at least weekly in 43%. Over 70% used at least one form of equipment to assess peripheral neuropathy, but peripheral blood flow was only formally measured in 13%. Although podiatry input to patient education was common (84%), only 6% had received formal training in education. Guidelines and strategies for management of active foot problems were available in 50-74% of cases. Orthotic input was highly variable, and absent in 15% of responses. Podiatrist fitting and application of foot protective apparatus was only recorded in 22-61% of responses. Access to isotopic and/or MR foot imaging and peripheral angiography and angioplasty was recorded in 75-83% of responses. Separate specialist foot clinics were available in 49%, and where this was the case the use of newer foot ulcer healing applications was higher (P < 0.01). Clear regional differences were apparent in the nature of the service, the use of newer treatments, and in access to an orthotist, a local 'dedicated' foot surgeon or a separate diabetic foot clinic. Of 245 documented bids for service improvements, only 19 related to foot care and only 21% of bids were successful. CONCLUSIONS: Despite an increase in podiatry support to diabetes care over the last 10 years, the level of access and the nature of the services provided is much less than recommended in many advisory documents. The strategy of a co-ordinated 'team' approach to foot care still takes place in less than 50% of centres. There are clear regional differences in diabetes foot care services. Both providers and purchasers of diabetes services may not have given sufficient attention to this area, given the relatively small number of documented bids for service improvements in this area, and the very low success rate of such bids.

Diabetes Mellitus↗
PubMed2002

Association of British Clinical Diabetologists (ABCD) survey of secondary care services for diabetes in the UK, 2000. 1. Methods and major findings.

OBJECTIVE: To examine the provision, and variations in, secondary care diabetes services in the UK. METHODOLOGY AND PARTICIPANTS: A postal survey of all 238 identified secondary care providers of diabetes services in 2000. RESULTS: Following two reminders, a 77% response rate was achieved. Major deficiencies in core staffing levels were recorded, with 36% of services provided by only one consultant physician with an interest in diabetes. The provision of diabetes specialist nurses was less than recommended in 87% of responses, whereas podiatry and dietetic support was unavailable in 3% and 27% of responses, respectively. Diabetes registers were not present in 28%, and a co-ordinated retinopathy screening programme unavailable in 26% of responses. Key biochemical measurements were unavailable in 9% (microalbuminuria) to 18% (HDL-cholesterol) of responses. A 'Well-Resourced Service' score was devised taking account of levels of personnel, facilities and specialized clinical services. There was a significant geographical variation in this score (P < 0.001), with the lowest score (least well-resourced services) in the Eastern NHS Region of England, and the highest score in the North-west NHS Region of England. The 'Well-Resourced Service' score was also significantly lower (P < 0.05) where there were less than two whole-time consultant physicians providing diabetes services. In contrast to other aspects of service provision, availability of dieticians and a combined diabetes-ophthalmology service had declined since 1990. Of 245 recorded bids for resources and service improvements for diabetes care, the success rate overall was 44%, and lowest where bids were made for dietetic and podiatry support. CONCLUSIONS: There is presently a major shortfall in provision of secondary care diabetes services throughout the UK, with evidence that there is significant regional variation and less facilities and resources where there are less than two consultants providing specialized diabetes services. On average bids for service improvements were only successful in < 50% of cases, most usually where the service was relatively better provided for. Considerable development and investment are required nationally to ensure equitable access to specialized diabetes services, a vital component in reducing adverse diabetes outcomes.

Delivery of Health Care↗
PubMed1999

A new type of microelectrode for obtaining unitary recordings in the human spinal cord.

OBJECT: In this paper the authors report on the conception and adjustment of a microelectrode used to obtain unitary recordings in the human spinal cord. METHOD: To overcome the difficulties related to intraoperative pulsations of the spinal cord, the authors opted to use a floating microelectrode. Because the recordings are obtained most often from spontaneous activities, it is difficult, with a single microelectrode, to separate spikes from electrical artifacts that are related to the switching of devices. Consequently, the authors designed a dual microelectrode made of two tungsten-in-glass-attached microelectrodes separated by 300 microm. Because the two electrodes cannot obtain recordings in the same neuron, it is possible to distinguish unambiguously spikes (recorded on one tip) from electrical artifacts (recorded simultaneously on the two tips). The dual microelectrode is 2 cm long, with a 20-microm tip length, and 800 to 1200-Ohms impedance. This microelectrode can be implanted "free hand," in the dorsal horn, by using a microsurgical forceps under a surgical microscope. The data analysis is performed off-line with spike sorter hardware. In the dorsal horns in 17 patients who were selected to undergo a dorsal root entry zone (DREZ) rhizotomy to treat various pathological conditions, unitary recordings were obtained using this double microelectrode. The authors recorded 57 neurons in good conditions of stability and isolation. CONCLUSIONS: The microelectrode described in this paper was successfully used to obtain recordings in neurons in more than 85% of the patients. This simplified, floating double microelectrode can therefore be considered for use in microsurgical DREZ rhizotomy to obtain unitary recordings in the human spinal dorsal horn.

Artifacts↗
PubMed1984

Axotomy increases glycogen phosphorylase activity in motoneurones.

The relative distribution of glycogen phosphorylase a and b in the lumbar spinal cord of the adult rat following either transection or crush of the sciatic nerve has been studied. The activity of the glycogen phosphorylase was measured histochemically by its capacity to convert glucose-1-phosphate to glycogen which was then stained with iodine. Prior to any treatment, the enzyme was largely in its inactive b form. Sciatic section and crush produced a transient (24 h) decrease in the amount of the active glycogen phosphorylase a in the sciatic motoneurone pool. Fourteen days post-transection, but not crush, a marked increase in the level of the active glycogen phosphorylase a form of the enzyme could be detected in the axotomised motoneurones which persisted for up to 6 weeks. No equivalent changes occurred in the axotomized dorsal root ganglion cells. Glycogen phosphorylase although normally present in neurones in its inactive b form can be converted to the active a form by calcium or adenosine 3':5'-phosphate. The substantial increase in the level of glycogen phosphorylase a in axotomized motoneurones may be a reflection of an increased calcium influx into these cells due to the development of abnormally hyperexcitable membranes and the appearance of dendritic spikes that is known to occur in these motoneurones.

Adenosine Monophosphate↗
PubMed1981

Effects of capsaicin applied locally to adult peripheral nerve. II. Anatomy and enzyme and peptide chemistry of peripheral nerve and spinal cord.

(1) Capsaicin solution was applied for 15 min around a 1 cm length of sciatic nerve in the mid upper leg of adult rats. (2) Electron microscopic examinations of the nerve in the treated region after 14 days shows no signs of degeneration of either myelinated or unmyelinated fibres attributable to the capsaicin. (3) Fluoride resistant acid phosphatase FRAP disappears from the central terminals of the treated nerve by 7 days. (4) 1.5 mM capsaicin is sufficient to product a complete reduction of FRAP in the spinal cord. (5) The peptides substance P and cholecystokinin (CCK) are markedly depleted in the region of spinal cord terminations of the treated nerve at 14 days. (6) Substance P and CCk are not affected in spinal cord regions other than in the unmyelinated afferent terminal zone. Similarly neurotensin and neurophysin which are not present in afferent fibres are not influenced by capsaicin treatment of the sciatic. (7) It is concluded that there are chemical changes in the spinal cord terminals of fine afferents after local peripheral capsaicin.

Acid Phosphatase↗