Liam J Caffery

Telemedicine – A bibliometric and content analysis of 17,932 publication records

OBJECTIVES We aimed to provide an up-to-date contemporary bibliometric view of the telemedicine and telehealth literature and a longitudinal analysis of changes in content themes. METHODS Software tools were used to extract and process MEDLINE entries. Frequencies of papers by year of publication and outlet were calculated, ranked, charted and tabulated. Frequency of publication by author was also calculated, ranked and tabulated. The process was repeated for two time periods to examine change: (i) 1970-1995 and (ii) 2009-2013. Content analysis of abstracts was conducted and tag clouds were generated. This visual representation was used to identify key words and prominent themes. RESULTS 17,932 records relating to articles published in 2523 unique outlets were analyzed. In the cumulative literature, 3152 (18%) articles were published in specialist telemedicine journals while most articles (14,780 [82%]) were published in mainstream outlets. This pattern was observed in both epochs. Clinical journals were not highly represented. Over time 46,066 unique authors have contributed to the field, with 21,109 of them publishing in the period 2009-2013. DISCUSSION Telemedicine is a large and growing field with most publication occurring outside of the specialist journals. Content analysis suggested a change of focus from the technical to the clinical between the two epochs. As a healthcare setting, the home also appears to be emergent. CONCLUSION This study updates the findings of previous studies. The emphasis within the literature suggests a move from technical issues to clinical applications and evaluation. The maturity of the field and its accessibility to clinicians and policy makers remains unclear.

A literature review of email-based telemedicine

A structured analysis of peer-reviewed literature about the delivery of health services by email was undertaken for this review. A total of 185 articles were included in the analysis. These articles were thematically categorised for medical specialty, participants, sub-topic, study design and service-delivery application. It was shown that email-based telemedicine can be practiced in a large number of medical specialties and has application in primary consultation, second opinion consultation, telediagnosis and administrative roles (e.g. e-referral). Email has niche applications in low-bandwidth, image-based specialties (e.g. dermatology, pathology, wound care and ophthalmology) where attached digital camera images were used for telediagnosis. Diagnostic accuracy of these images was the predominant topic of research and results show email as a valid means of delivering these medical services. Email is also often used in general practice as an adjunct for face-to-face consultation. Further, a number of organisations have significantly improved the efficiency of their outpatient services when using email as a triage or e-referral system. Email-based telemedicine provides specialist medical opinion in the majority of reviewed services and is most likely to be instigated by the patients primary care giver. However, email-consultations between patient and primary care and patient and secondary care are not uncommon. Most email services are implemented using ordinary email. However, a number of organisations have developed purpose-written email applications to support their telemedicine service due to impediments of using ordinary email. These impediments include lack of management tools for: the allocation and auditing of cases for a timely response and the co-ordination of effort in a multi-clinician, multi-disciplinary service. The ability to encrypt ordinary email thereby securing patient confidentiality is also regarded as difficult when using ordinary email. Hence, alternative web-based email applications where the encryption can be implemented using the more user-friendly HTTPS have become popular. Much of the reviewed literature is descriptive or anecdotal and hence, suffers from lack of conclusive results regarding positive patient outcomes. This may account for email-based telemedicine generally being regarded as underutilised. However, the potential is well recognised.

Radiological interpretation of images displayed on tablet computers: a systematic review

OBJECTIVE To review the published evidence and to determine if radiological diagnostic accuracy is compromised when images are displayed on a tablet computer and thereby inform practice on using tablet computers for radiological interpretation by on-call radiologists. METHODS We searched the PubMed and EMBASE databases for studies on the diagnostic accuracy or diagnostic reliability of images interpreted on tablet computers. Studies were screened for inclusion based on pre-determined inclusion and exclusion criteria. Studies were assessed for quality and risk of bias using Quality Appraisal of Diagnostic Reliability Studies or the revised Quality Assessment of Diagnostic Accuracy Studies tool. Treatment of studies was reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). RESULTS 11 studies met the inclusion criteria. 10 of these studies tested the Apple iPad(®) (Apple, Cupertino, CA). The included studies reported high sensitivity (84-98%), specificity (74-100%) and accuracy rates (98-100%) for radiological diagnosis. There was no statistically significant difference in accuracy between a tablet computer and a digital imaging and communication in medicine-calibrated control display. There was a near complete consensus from authors on the non-inferiority of diagnostic accuracy of images displayed on a tablet computer. All of the included studies were judged to be at risk of bias. CONCLUSION Our findings suggest that the diagnostic accuracy of radiological interpretation is not compromised by using a tablet computer. This result is only relevant to the Apple iPad and to the modalities of CT, MRI and plain radiography. ADVANCES IN KNOWLEDGE The iPad may be appropriate for an on-call radiologist to use for radiological interpretation.

Telehealth interventions for reducing waiting lists and waiting times for specialist outpatient services: A scoping review.

We undertook a scoping review of the published literature to identify and summarise key findings on the telehealth interventions that influence waiting times or waiting lists for specialist outpatient services. Searches were conducted to identify relevant articles. Articles were included if the telehealth intervention restructured or made the referral process more efficient. We excluded studies that simply increased capacity. Two categories of interventions were identified – electronic consultations and image-based triage. Electronic consultations are asynchronous, text-based provider-to-provider consultations. Electronic consultations have been reported to obviate the need for face-to-face appointments between the patient and the specialist in between 34–92% of cases. However, it is often reported that electronic consultations are appropriate in less than 10% of referrals for outpatient care. Image-based triage has been used successfully to reduce unnecessary or inappropriate referrals and was used most often in dermatology, ophthalmology and otolaryngology (ENT). Reported reduction rates for face-to-face appointments by specialty were: dermatology 38–88%, ophthalmology 16–48% and ENT 89%. Image–based triage can be twice as effective as non-image based triage in reducing unnecessary appointments. Telehealth interventions can effectively be used to reduce waiting lists and improve the coordination of specialist services, and should be considered in conjunction with clinical requirements.

Implementation of a Web-based teleradiology management system

Five Queensland hospitals have been equipped with picture archiving and communication systems (PACS). Patient transfers from one facility to another involve transferring images from PACS to PACS. We have developed a Web-based teleradiology management system (TMS) that automates the transfer of images and radiologists’ reports, as well as the quality control and housekeeping associated with teleradiology. The TMS was installed at all five hospitals. During a two-month study period, 752 studies were transmitted. All studies and associated radiologists’ reports arrived correctly at the destination hospital, together with the notification email for the system administrators. PACS support personnel agreed that the TMS significantly reduced the amount of time they spent on image transfers. Staff at the busiest site estimated that the time they spent on image transfer had decreased from 10h per week to 1h per week.

Automatic message handling for a national counselling service

An automatic email handling system (AutoRouter) was introduced at a national counselling service in Australia. In 2003, counsellors responded to a total of 7421 email messages. Over nine days in early May 2004 the administrator responsible for the management of the manual email counselling service recorded the time spent on managing email messages. The AutoRouter was then introduced. Since the implementation of the AutoRouter the administrators management role has become redundant; an average of 12h 5 min per week of staff time has been saved. There have been further savings in supervisor time. Counsellors were taking an average of 6.2 days to respond to email messages (n=4307), with an average delay of 1.2 days from the time counsellors wrote the email to when the email was sent. Thus the response was sent on average 7.4 days after receipt of the original client email message. A significant decrease in response time has been noted since implementation of the AutoRouter, with client responses now taking an average of 5.4 days, a decrease of 2.0 days. Automatic message handling appears to be a promising method of managing the administration of a steadily increasing email counselling service.

Participatory design methods in telemedicine research

Healthcare systems require a paradigm shift in the way healthcare services are delivered to counteract demographic changes in patient populations, expanding technological developments and the increasing complexity of healthcare. Participatory design (PD) is a methodology that promotes the participation of users in the design process of potential telehealth applications. A PD project can be divided into four phases including: the identification and analysis of participant needs; the generation of ideas and development of prototypes; testing and further development of prototypes; and evaluation. PD is an iterative process where each phase is planned by reflecting on the results from the previous phase with respect to the participants’ contribution. Key activities of a PD project include: fieldwork; literature reviewing; and development and testing. All activities must be applied with a participatory mindset that will ensure genuine participation throughout the project. Challenges associated with the use of PD include: the time required to properly engage with participants; language and culture barriers amongst participants; the selection of participants to ensure good representation of the user group; and empowerment. PD is an important process, which is complemented by other evaluation strategies that assess organisational requirements, clinical safety, and clinical and cost effectiveness. PD is a methodology which encourages genuine involvement, where participants have an opportunity to identify practical problems and to design and test technology. The process engages participants in storytelling, future planning and design. PD is a multifaceted assessment tool that helps explore more accurately clinical requirements and patient perspectives in telehealth.

Accuracy of dental images for the diagnosis of dental caries and enamel defects in children and adolescents: A systematic review

Aim The aim of this review was to determine if photographic examination and subsequent image analysis provides comparable accuracy to visual inspection for the diagnosis of common dental conditions in children and adolescents. Methods We searched the PubMed database for studies that compared diagnostic accuracy of the two inspection techniques. Studies were screened for inclusion and were assessed for quality and risk of bias using the quality assessment of diagnostic accuracy studies tools. Findings were reported according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA). Findings Sixteen studies met the inclusion criteria. Nine of the included studies evaluated dental caries and eight evaluated enamel defects (one study evaluated both conditions). Conclusions Three studies found image analysis to be superior. For the remaining six studies the diagnostic accuracy was comparable. For enamel defects, three studies found image analysis to be superior, two found visual inspection to be superior and three studies reported comparable diagnostic accuracy. Most studies have found at least comparable results between photographic and visual inspection techniques. However, the wide variation in equipment and personnel used for the collection and interpretation of photographic images made it impossible to generalise the results. It remains unclear exactly how effective store-and-forward teledentistry is for the diagnosis of common dental conditions in children.

A review of paediatric telehealth for pre- and post-operative surgical patients

The Queensland Telepaediatric Service (QTS) was established in the year 2000 to deliver a broad range of paediatric specialist health services from the Royal Children’s Hospital (RCH) in Brisbane, mainly via videoconference. During a 13-year study period, the QTS facilitated 18,949 video consultations, comprising Mental Health (42%), Medicine (30%), Surgery (21%) and Other (8%). We reviewed the surgical services provided through the QTS. There were 3880 video consultations with a paediatric surgeon. Most of these (91%) used fixed videoconferencing units, 8% were delivered via mobile units (robots) and 1% were delivered using Skype. Surgical consultations were provided by telehealth to 106 sites: 89% in Queensland and the rest to other states. The main surgical specialties were burns (50%), ear, nose and throat (19%), general surgery (21%), orthopaedics (9%) and vascular anomalies (2%). During a 12-month audit period, there were 224 teleconsultations in general surgery; the most common reason for referral was for undescended testes (17%). During the study period there was a significant growth in all surgical telehealth activity: linear regression showed an annual increase of 17 cases per year (P < 0.02). In the last four years of the study, there was a substantial growth in the general surgical component, although there was also a reduction in the burns component. Telehealth has potential for other specialist consultations which require periodic assessment and review.

An analysis of the security and privacy of email messages used in e-mentoring

We analysed the content of email messages exchanged in a pilot mentoring scheme. The e-mentoring study was conducted for clinicians involved in the delivery of residential home care nursing, midwifery and allied health therapies. A classification score was assigned to each message, using an 8–point scale (1 = breach of patient confidentiality to 8 = no need for either security or privacy). For 108 messages examined, the mean score was 6.3 (SD 1.1), range 3–8. The analysis showed that no patient identifiable data had been divulged during the mentoring. This suggests that email systems used in e-mentoring do not need to use encryption techniques to meet legislative or administrative requirements. However, the success of e-mentoring is enhanced by the participants’ ability to discuss sensitive topics. We recommend the use of an email system unconnected to the employers email system. This will improve the privacy of mentoring correspondence by placing it outside the bounds of employer scrutiny.