Journal of Telemedicine and Telecare

At present, mobile phones are not a useful tool for medical control during a disaster. We have estimated the number of satellite channels that would be needed for telemedicine in a major disaster using the Erlang B equation. This indicated that 29 satellite channels would be sufficient for the operation of a telemedicine system for hospital-to-hospital communications during a major disaster in Japan. Governments at local and national levels in Japan, as well as private organizations, require an independent satellite telecommunication infrastructure to deal with the aftermath of disasters.

While telemedicine programme objectives, technologies and even philosophies will differ, certain common factors that enhance programme success can be identified. For example, a programme design which is driven by technological imperatives is likely to fail. It must also be recognized that telemedicine programmes cannot force remote sites to use their services. Thus developers must assess the needs for the proposed telemedicine service from a clinical, economic and technical perspective. From a clinical perspective, it is important to remember that certain clinical services can be provided via telemedicine while others cannot. Programme developers must recognize the significant role of the remote team in sustaining services; the on-site presenter is essential for the successful practice of telemedicine. Evaluating a telemedicine programme should be viewed as an integral step in its design and implementation. One site may define effectiveness in terms of access to services while another may measure success by cost savings. The success of future telemedicine programmes will be strongly related to their ability to recognize that they should be used to enhance current health-care delivery rather than to replace it.

In the US, children with special health care needs are underserved by both the medical and educational systems. This problem is especially serious in rural states. Telemedicine is a technique that can reduce these gaps in service and help connect the two systems. The technology required has become cheaper and more accessible. Progress on reimbursement for such services has also been made. For some years, we have provided telepsychiatry for children in Washington State using videoconferencing. Interviews with families and service providers were conducted in Washington and Missouri. Some parents reported that their child actually preferred telepsychiatry to conventional consultation. The telepsychiatry service model was built on the existing system of outreach clinics, thus involving specialists who were familiar with the community and who were known and trusted by the community. Before starting, we ensured that all relevant service delivery agencies and providers were comfortable about using videoconferencing as a method of service delivery. In the 18-month period ending in March 2003, three providers in Seattle saw 159 patients by telepsychiatry and 210 patients face-to-face at the hospital clinic. The main barrier to further growth of the telepsychiatry service is the absence of reimbursement for telepsychiatry.

We reviewed the methodology used in telemedicine research concerning patients with postural and movement disorders. Literature searches were performed using various computerized databases through to October 2005. Twenty-two studies met the criteria for review. Two broad models of telemedicine delivery were represented in the literature: (1) telemedicine between health-care professionals at each telemedicine site (n = 16) and (2) telemedicine between health-care professionals and a patient at a remote site (n = 6). Disparate research methodologies were used to investigate these two models. Most studies were limited to investigating the technical feasibility and acceptability of a telemedicine service rather than focusing on the overall effect of introducing the telemedicine service into routine health care. Nonetheless, it is possible to conclude that telemedicine is acceptable for both patients and professionals when used in rehabilitation. Since the two models of telemedicine evaluation tend to explore different outcomes (diagnostic accuracy versus health status), it is recommended that separate methodologies should be used. In contrast to evaluations of telemedicine model 2, randomized controlled trials appear to be less valuable for telemedicine model 1.

We developed a mobile, wireless videoconferencing system suitable for use in a hospital accident and emergency (A&E) department. Four consultants, eight junior doctors and 11 nurses working in the A&E department tested the system. Transmission of three types of data (audio, still images and video) was tested. The audio for the breath and heart sounds was judged to have some disturbance. One consultant rated the diagnostic quality as good and one rated it as fair. The quality of the still images was judged to be from fair to excellent. The quality of the video was rated as good. Possible interference between the wireless local-area network and various medical devices in the A&E department were examined, but none was detected. The four consultants who tested the system were very positive in their initial comments. Eight of the 11 nurses remained sceptical about its use. Of a total of 20 patients who answered a survey, 13 were slightly anxious about the use of the system to transmit their data to a distant point. Overall, the performance of the system was satisfactory for use in the A&E role.

We reviewed 2135 consecutive emergency teleconsultations, which were received at an academic emergency department from state correctional facilities. During the 52-week study period, an average of 5.8 video-consultations per day were performed. A total of 1522 consultations (71%) had complete start and end consultation times, and were included in the analysis. Of these, 923 were managed primarily by emergency medicine residents and physician assistants, while the remaining 599 were managed by attending physicians alone. Following consultation, the disposition of the patients included 940 who were transported to the emergency department, 351 who were discharged to the general facility population and 193 who were admitted to the local infirmary. Overall, 38% of patients avoided a journey to the emergency department. The average consultation time was 17 min (95% confidence interval [CI], 10–24). The average consultation time for residents and physician assistants was 16 min (95% CI, 8–24) and it was 19 min (95% CI, 11–27) for attending physicians. Consultation time for patients not transported to the emergency room was 21 min (95% CI, 13–29), while for patients transferred to an emergency department, consultation time was 15 min (95% CI, 9–21). These results may assist in planning the workforce requirements for emergency department-based telemedicine services.

We analysed the interaction in doctor–nurse–patient teleconsultations in primary care. A qualitative analysis was performed of 30 primary care teleconsultations in northeastern Finland. The male doctor was the same in all consultations. One of the trained nurses appeared in 27 consultations. The analysis followed the methodological principles of the grounded theory approach. The interaction in the doctor–nurse–patient triad was complex. The doctor had to concentrate on many things at the same time and undivided attention to the patient was not always possible. The nurse assumed an active role and was a facilitator of the interaction, an advocate for the patient, a secretary for the doctor and a mediator of the doctor's therapeutic influence. The patients frequently turned to the nurse for information. The role of interpersonal dynamics in telemedical encounters is important. Both the doctor and the nurse need to learn new skills to perform teleconsultations jointly.

We analysed 46 telecytology cases sent from two rural hospitals about 500 km from a tertiary cancer centre. The cases were submitted for second opinion over a period of two years and evaluated using a static store and forward telecytology approach. A total of 715 digital images were studied (average 15 per case). Forty-one of the 46 cases (89%) were reported within 3 days and 54% of cases were reported within one working day. The aspiration smears and images were found to be of diagnosable quality in 89 and 93% of the cases, respectively. The diagnostic concordance was assessed by comparing the telecytology diagnosis, glass slide diagnosis and final histopathology diagnosis (when available). A clinically useful diagnosis was rendered in 91% cases with 74% complete concordance. Five out of 46 cases (11%) were deferred for glass slide review. Store and forward telecytology using the Internet is a rapid and effective method of providing expert diagnosis in cytology.

A 12-lead electrocardiogram (ECG) recorded in patients with acute coronary syndrome (ACS) was transmitted to a call centre via telephone (tele-ECG). In 120 patients (mean age 64 years) referred to hospitals because of ACS, a standard 12-lead ECG and a tele-ECG recorded at the same time were compared by two cardiologists and one internist independently and blindly. Conduction times exhibited very good agreement between standard and tele-ECG with reliability coefficients (R) of 0.91, 0.86 and 0.89 for the PQ-, QRS- and QT interval, respectively. Rhythm analysis was correct in 99% of the cases. Negative T waves, ST-segment elevation and depression were detected with very high agreement in the tele-ECG exhibiting kappa (κ) coefficients between 0.75 and 0.96. The correct ECG diagnosis of ST-elevation myocardial infarction (STEMI) was possible with excellent agreement between standard and tele-ECG, showing κ coefficients of 0.96, 0.99 and 0.99, respectively, for three investigators. The 12-lead tele-ECG recorder proved accurate for the detection of acute STEMI.