Gwyn Weatherburn

An assessment of parental satisfaction with mode of delivery of specialist advice for paediatric cardiology: Face-to-face versus videoconference

Comparisons of parental satisfaction were made after specialist paediatric cardiology consultations were conducted either by conventional face-to-face delivery or telemedicine. Satisfaction statements were rated by 100 parents: 20 who experienced telemedicine; 56 with new children seen in the outreach clinics; 24 with children on review whose next appointment was at the specialist centre. There was general satisfaction with both types of consultations, but significant differences were noted. Those who had videoconferences felt that they had received an explanation about how the specialist advice would be obtained, and that they could see the pictures being discussed clearly. Those who had experienced telemedicine believed that teleconsultations could save them travelling time and money and they found the technical aspects of sound and picture quality acceptable. They were not discomforted by the technology and felt reassured by the consultation with the specialist. However, there was some ambivalence towards the statements suggesting that teleconsultations could take the place of conventional face-to-face consultations.

Telemedicine in pediatric and perinatal cardiology: Economic evaluation of a service in English hospitals

OBJECTIVES Pediatric cardiology has an expanding role in fetal and pediatric screening. The aims of this study were to observe how district hospitals use a pediatric telecardiology service, and to compare the costs and outcomes of patients referred to specialists by means of this service or conventionally. METHODS A telemedicine service was set up between a pediatric cardiac center in London and four district hospitals for referrals of second trimester women, newborn babies, and older children. Clinicians in each hospital decided on the role for their service. Clinical events were audited prospectively and costed, and patient surveys were conducted. RESULTS The hospitals differed in their selection of patient groups for the service. In all, 117 telemedicine patients were compared with 387 patients seen in London or in outreach clinics. Patients selected for telemedicine were generally healthier. For all patients, the mean cost for the initial consultation was 411 UK pounds for tele-referrals and 277 UK pounds for conventional referrals, a nonsignificant difference. Teleconsultations for women and children were significantly more expensive because of technology costs, whereas for babies, ambulance transfers were much more costly. After 6-months follow-up, the difference between referral methods for all patients was nonsignificant (telemedicine, 3,350 UK pounds; conventional referrals, 2,172 UK pounds), and nonsignificant within the patient groups. CONCLUSIONS Telemedicine was perceived by cardiologists, district clinicians, and families as reliable and efficient. The equivocal 6-month cost results indicate that investment in the technology is warranted to enhance pediatric and perinatal cardiology services.

The effect of a Picture Archiving and Communications System (PACS) on diagnostic performance in the accident and emergency department

Objective—A study has been conducted to identify the benefits to the accident and emergency (A&E) department of a hospital wide Picture Archiving and Communications System (PACS). Methods—The study was conducted in two parts: firstly while the hospital was using conventional radiographic films, and secondly when the PACS was in operation. For each part of the study, the diagnoses of radiographic images made by A&E clinicians were compared with those made by radiologists. This resulted in the estimation of the incidence of false negative findings by the A&E staff. The management of patients with such findings was studied to identify those for whom a change of treatment was required. Such data for the two periods, when film and when PACS was used, were compared. Results—It was found that the overall rate of misdiagnoses across all A&E patients who had radiography was low in both periods and there was a significant reduction when PACS was used (1.5% for film and 0.7% for PACS, 95% CI for difference between proportions: −0.014 to −0.0034), but the rate of serious misdiagnoses involving patient recall did not change significantly (95% CI for difference between proportions: −0.0059 to +0.0001). Conclusions—When PACS was used the diagnostic performance by A&E staff improved by reducing false negative interpretations but the rate of serious misdiagnosis did not change.

Magnetic resonance imaging for investigation of the knee joint: a clinical and economic evaluation

OBJECTIVES The aim of the study reported here was to investigate whether the use of magnetic resonance imaging (MRI) impacts on the clinical management of patients presenting with chronic knee problems, reduces costs, and improves patient outcome. METHODS A single-center randomized controlled trial was conducted. Patients attending with knee problems in whom surgery was being considered were randomized either to investigation using an MRI scan or to investigation using arthroscopy. The study investigated benefits in terms of avoidance of surgery and patient health-related quality of life (using SF-36 and EQ-5D). Costs were assessed from the perspectives of the National Health Service and patients. All analyses were by intention to treat. RESULTS The trial recruited 118 patients. No statistically significant differences were found between groups in terms of health outcome. However, the use of MRI was associated with a positive diagnostic/therapeutic impact: a significantly smaller proportion of patients in the MRI group underwent surgery (MRI = 0.41, No-MRI = 0.71; p value = .001). There was a similar mean overall cost for both groups. CONCLUSIONS The use of MRI in patients with chronic knee problems, in whom surgery was being considered, did not increase costs overall, was not associated with worse outcomes, and avoided surgery in a significant proportion of patients.

A paediatric telecardiology service for district hospitals in south-east England: an observational study.

Objectives: To compare caseloads of new patients assessed by paediatric cardiologists face-to-face or during teleconferences, and assess NHS costs for the alternative referral arrangements. Design: Prospective cohort study over 15 months. Setting: Four district hospitals in south-east England and a London paediatric cardiology centre. Patients: Babies and children. Intervention: A telecardiology service introduced alongside outreach clinics. Measurements: Clinical outcomes and mean NHS costs per patient. Results: 266 new patients were studied: 75 had teleconsultations (19 of 42 newborns and 56 of 224 infants and children). Teleconsultation patients generally were younger (49% being under 1 year compared with 32% seen personally (p = 0.025)) and their symptoms were not as severe. A cardiac intervention was undertaken immediately or planned for five telemedicine patients (7%) and 30 conventional patients (16%). However, similar proportions of patients were discharged after being assessed (32% telemedicine and 39% conventional). During scheduled teleconferences the mean duration of time per patient in sessions involving real-time echocardiography was 14.4 min, and 8.5 min in sessions where pre-recorded videos were transmitted. Mean cost comparisons for telemedicine and face-to-face patients over 14-day and 6-month follow-up showed the telecardiology service to be cost neutral for the three hospitals with infrequently-held outreach clinics (£1519 vs £1724 respectively after 14 days). Conclusion: Paediatric cardiology centres with small cadres of specialists are under pressure to cope with ever-expanding caseloads of new patients with suspected anomalies. Innovative use of telecardiology alongside conventional outreach services should suitably, and economically, enhance access to these specialists.

Issues in the evaluation of picture archiving and communication systems.

Picture archiving and communication systems (PACS) are an example of the application of computer technology in the medical field. PACS automates image handling in a hospital and has the potential to transform the way radiology is currently performed. This paper focuses on the evaluation of the PACS technology, and considers the claims that have been made for PACS, how these claims might be turned into questions to be addressed by evaluation and the appropriate methods for the evaluation of PACS. A distinction is drawn between evaluation questions for which the hospital is the appropriate focus and those for which the patient is the appropriate focus. The preferred research design is different for hospital focused PACS evaluation and patient-focused evaluation of small scale PACS systems. A contemporaneous experimental comparison within hospitals is the preferred design for the patient-focused evaluation of small scale PACS systems. The patient-focused evaluation of large scale systems and the hospital-focused evaluation of all PACS systems could feasibly be conducted as contemporaneous experimental comparisons between hospitals but the large research costs implied by such a design almost certainly mean that non-contemporaneous, non-experimental comparisons within hospitals are more realistic. The current situation for the PACS technology is that it has potential, but as yet unproven, benefits and a large capital cost. Thus, the primary purpose of funding additional PACS implementations must be to add to the currently small body of evaluation evidence.

Use of digital images in the assessment and treatment of pressure ulcers in patients with spinal injuries in community settings

We conducted a retrospective review of the digital images in the clinical records of 50 patients with pressure ulcers. Ten nurses independently assessed one image from each patient. There was a total of 414 responses from the nurses about the stage and location of the ulcers (83% response rate). The average agreement about the stage and location of the ulcers was 85%. The overall agreement declined as the stage of the ulcer increased. The average agreement regarding the wound descriptors was: necrosis 85%, granulation tissue 81%, ischaemia 83%, cellulitis /infection 69%, erythema 68%. Almost all nurses felt the need to change the current management of the wound (460 responses, or 92%). The nurses judged that most digital images were of good quality (17%) or very good quality (79%). The present study suggests that a high percentage of assessments for patients currently travelling to specialist clinics could be performed in the community using digital images and telemedicine.

Automated weight monitoring in chronic heart failure: the excluded majority

We interviewed nurses and patients with heart failure who were participating in a research trial of home telemonitoring in which weight data were monitored automatically by a call centre. A total of 35 interviews were conducted and the transcripts were analysed thematically. The results indicated that nurses disagreed about the role of weight monitoring and the practicalities of telemonitoring in their daily practice, indicating that the process was idiosyncratic to each user. The lack of personal feedback and nursing contact discouraged patients from weight monitoring, suggesting that a feedback mechanism may have to be adapted to suit patients. There were other factors which created barriers to acceptance by patients and staff. Home telemonitoring for heart failure cannot be evaluated effectively using the standard approach commonly employed. New studies are required.

The design of specialist paediatric cardiology telemedicine services to meet the needs of patients.

An observational study was conducted of two different videoconferencing services offered by the Royal Brompton and Harefield NHS Trust (RBH), a tertiary centre for cardiology in London. In the first, specialist cardiology advice was provided by telemedicine (384 kbit/s bandwidth) to four district general hospitals in England. In the second, specialist cardiology advice was provided via a low-cost videoconferencing system (128 kbit/s bandwidth) to the Mother and Child Institute in Belgrade. The hospitals chose to use the equipment for different purposes and in different ways. However, at the end of the study, they continued to use telemedicine for the normal provision of clinical services. The success of the projects can be partly attributed to the staff involved and in particular, to the telemedicine champions at the RBH. The needs of the patients were identified and then the telemedicine service was designed by local clinicians to meet those needs.

Low-bandwidth teleconsultations for patients with complex congenital heart diseases.

We have reviewed our experience with a low-bandwidth paediatric telecardiology link (using ISDN at 128 kbit/s) between a tertiary centre in Belgrade and a tertiary centre in London. Over a two-year period, 12 videoconferences were held, during which 40 case histories of 38 patients were presented from Belgrade. The patients were aged 7 days to 20 years, and most of them had complex congenital heart defects. Changes in diagnosis and/or therapy occurred in 21 cases. Clinically relevant changes in diagnosis occurred in 2/40 cases (5%). In 12 cases, there were slight differences in opinion which resulted in minor changes in therapy for 9 of the patients. In another 9 patients, major changes in therapy occurred. There were no major problems with the quality of image and sound in any of the videoconferences. Our experience suggests that when there are experienced paediatric cardiologists at both ends of the connection, transmission via a single ISDN line is safe and accurate.