Biomedical subjects

M Loane

Publications and source records attributed to M Loane.

10 recordsLinked to original sources

PubMed2001

The effect of videoconferencing on the depth perception of observers.

The ability of the human eye to perceive depth was measured using a specially designed instrument. Visual acuity and both monocular and binocular stereoacuity were measured when viewing the instrument directly and via a videoconferencing link. Ten subjects with an average age of 32.5 years (range 24-50) took part in the study. The group mean visual acuity using both eyes under normal test conditions was -0.04 logMAR (Snellen 6/5) compared with 0.18 logMAR (Snellen 6/10) for the video-link. The mean stereoacuity using both eyes was 37" (SD 18") under normal test conditions. When a videoconferencing link was used, the mean stereoacuity fell to 1218" (SD 1203") using one eye and to 1651" (SD 1419") using both eyes. The ability to perceive depth remotely via a video-link was significantly decreased compared with normal test conditions.

Adult↗

PubMed2001

A simulation model for analysing patient activity in dermatology.

We developed a general model to assess patient activity within the primary and secondary health-care sectors following a dermatology outpatient consultation. Based on observed variables from the UK teledermatology trial, the model showed that up to 11 doctor-patient interactions occurred before a patient was ultimately discharged from care. In a cohort of 1000 patients, the average number of health-care visits was 2.4 (range 1-11). Simulation analysis suggested that the most important parameter affecting the total number of doctor-patient interactions is patient discharge from care following the initial consultation. This implies that resources should be concentrated in this area. The introduction of teledermatology (either realtime or store and forward) changes the values of the model parameters. The model provides a quantitative tool for planning the future provision of dermatology health-care.

Appointments and Schedules↗

PubMed2000

Transfer of telemedical support to Cornwall from a national telemedicine network during a solar eclipse.

During late 1998 and early 1999, planning officers in Cornwall predicted a huge increase in summer visitors to the county to observe the August solar eclipse. There was the possibility that a mass gathering in Cornwall could overload existing arrangements for handling accident and emergency patients. We therefore set up a telemedicine system to support the county's minor injury units (MIUs) from hospitals throughout the UK. Six main hospital accident and emergency departments outside Cornwall with existing links to their own MIUs were twinned with 10 of the 11 MIUs in Cornwall before the expected date of the gathering. The network was live for nine days, starting four days before the eclipse, and 2045 patients were seen in the 10 MIUs. There were 93 telemedicine calls from the 10 MIUs, involving 91 patients. Overall, 4.6% of the patients required a telemedicine consultation. Fifty-seven calls were made during working hours. Thirty-four patients were referred for further management, of whom 18 were referred on the same day. The transfer of telemedical support to a national network was successful.

Emergency Medical Services↗

PubMed2000

A follow-up study of remote trauma teleconsultations.

We conducted a follow-up study of patients who had attended a nurse-led minor accident and treatment service (MATS) and who had participated in a teleconsultation. Over three and a half years, 31,510 patients had attended the MATS unit and 1854 patients (5.9%) of these had participated in a teleconsultation. Of the 1854 telemedicine patients, 1199 had been referred to hospital or clinic and 1153 had actually attended. Retrospective examination of the relevant hospital records showed that in 25 cases (2%) the original telediagnosis was considered incorrect at face-to-face review and that treatment was either begun or changed in 264 cases (23%). All patients, including those discharged home after the teleconsultation, were sent a questionnaire about any changes to their injury. Of the 655 patients discharged home, a questionnaire response was obtained from 598 (91%). Following discharge, 43 of these patients had sought help from another health-care provider (the majority from their general practitioner). Of the 46 patients referred to hospital who did not keep their follow-up appointments, questionnaire results were obtained from 35 (76%). Nine of these patients had sought help from another health-care provider (the majority from their general practitioner) but there had been no change in diagnosis or treatment. Our findings suggest that teleconsultations are an effective means of delivering minor injuries care.

Follow-Up Studies↗

PubMed1998

Can x rays be accurately interpreted using a low cost telemedicine system?

OBJECTIVE: To assess whether the quality of x ray films transmitted via a low cost (low resolution) telemedicine link was satisfactory for clinical diagnosis. METHODS: A retrospective study of a set of consecutive accident and emergency (A&E) radiographs. An A&E registrar viewed these directly on a standard x ray viewing box and via a telemedicine link. RESULTS: There were 81 abnormalities out of 234 x ray films. Three abnormalities were missed both on the x ray viewing box and telemedicine link, one of which was significant. There were five additional abnormalities missed on the telemedicine link but detected on the x ray viewing box, of which two were significant. One normal x ray film was interpreted as abnormal on the telemedicine link. There were no false positives on direct viewing. CONCLUSION: Transference of plain radiographs using a low cost/low resolution telemedicine link by A&E doctors is adequate for clinical interpretation.

Emergency Service, Hospital↗

PubMed1998

A joint US-UK study of home telenursing.

Nursing notes for patients nursed at home in the USA and the UK were reviewed using an abstraction instrument developed and tested in the US. More than 1700 episodes of patient care at home were reviewed: 906 in the US and 839 in the UK. Preliminary data suggest that in the US approximately 45% of home nursing visits could be done via telemedicine, while the figure is lower in the UK, less than 15%. Pilot trials of an analogue video-telephone in Kansas City and Belfast suggest that even relatively low-quality compressed video may be useful for home nursing. Clearly, there are differences between the two countries which merit further study, but there is evidence to suggest that telemedicine may have a role in the delivery of home health care.

Aged↗

PubMed1998

The potential for telemedicine in home nursing.

We assessed the proportion of home nursing visits that could be replaced by home telenursing in the UK. A retrospective review of nursing notes in the UK was undertaken using an abstraction instrument developed and tested in the US. A total of 1951 episodes of patient care at home were reviewed: 1450 from Liverpool and 501 from Belfast. A total of 1626 (83%) of the episodes involved 'hands-on' interventions. In Belfast two observers estimated that 14% of home nursing visits could be done via telemedicine while in Liverpool two more observers gave an estimate of 16%. Inter-rater agreement was high (kappa = 0.93 for the Belfast observers and 0.79 for the Liverpool observers). Pilot trials of an analogue video-phone in Belfast suggested that even relatively low-quality compressed video might be useful for home nursing. These findings suggest that telemedicine may have a significant role in the delivery of home health care in the UK.

Adult↗

PubMed1997

Diagnostic accuracy of teledermatology: results of a preliminary study in New Zealand.

AIM: To determine the accuracy of a video conferencing system (telemedicine) in diagnosis of dermatological disorders. METHODS: New patients referred to a dermatology clinic were initially examined by telemedicine and then by a standard face to face consultation. The diagnoses made by each type of consultation were compared and accuracy of telemedicine determined. RESULTS: One hundred and four patients with 135 dermatological conditions were analysed. Seventy five percent of conditions were correctly diagnosed by telemedicine. In a further 7% a differential diagnosis was made, which included the final diagnosis made face to face. In 12%, the diagnosis was incorrect using the telemedicine system, and in 3% no diagnosis was made. Four per cent of diagnoses were only made when the patient was seen face to face. CONCLUSION: This preliminary study suggests that video conferencing equipment can be used with a reasonable degree of accuracy for the diagnosis of dermatological disease.

Adolescent↗

PubMed1996

Assessing for glaucoma in general practice.

Examining patients appropriately for primary open angle glaucoma in the general practice setting has traditionally been extremely difficult. The authors review important issues in the early detection of primary open angle glaucoma and discuss new assessment tools to assist GPs in this area.

Acute Disease↗

PubMed1989

Keratoconus: diagnosis and management.

Keratoconus is a common condition whose clinical features represent a common effect on the cornea of a number of diverse processes. This review deals with the clinical signs and accompanying histological and biochemical changes within the cornea, evaluates the significance of associated ocular and systemic conditions and assesses the incidence and prevalence of the disorder. The wider ophthalmic community shares in the treatment of keratoconus, so the general principles of contact lens fitting associated with this difficult condition are examined and the specific protocol used at the Flinders Medical Centre is presented. When contact lenses are not tolerated or an adequate improvement in visual acuity is not achieved, surgery is the next option, so a full assessment is made of the risks and benefits of penetrating keratoplasty. Older techniques, such as thermokeratoplasty and lamellar keratoplasty, are examined and the new technique of epikeratophakia is evaluated.

Conjunctivitis↗