Since the 1960s, there has been substantial development in the uses of video-conferencing (VC) among medical personnel, including surgeons who have adopted the technology.
A report on our own experience with VC was combined with a comprehensive PubMed search with the key words telepresence, video-conferencing, video-teleconferencing, telementoring and surgery, trauma, follow-up, education, and multidisciplinary teams. A search through two peer-reviewed telemedicine journals—Journal of Telemedicine and Telecare and Telemedicine and e-Health Journal—and references of all included papers and identified additional reports was conducted.
A total of 517 articles were identified with 51 relevant manuscripts, which included the key phrases. VC is widely used among surgeons for telementoring surgical procedures and in trauma and emergency medicine. Furthermore, VC is widely used by multidisciplinary teams and for the follow-up of patients after surgery.
VC is a common clinical tool for surgeons and provides a great opportunity to alter surgical practice and to offer patients the best expertise in surgical treatment despite long distances, especially in rural areas.
In 1962, Dr. Michael Ellis DeBakey pioneered the field of telemedicine with the first VC demonstration of open-heart surgery to be transmitted overseas by satellite. Medical staff in Geneva were able to view an aortic valve replacement being performed at The Methodist Hospital in Houston, Texas [1, 2].
Since the 1960s, there has been substantial development in the uses of VC among medical personnel, including surgeons . In recent years, the cost of VC equipment has become less expensive, and advanced technical skills are not required to use the system. Therefore, new applications of VC are emerging, such as surgical telementoring, trauma and emergency medicine, postoperative follow-up of patients, education of surgeons, and multidisciplinary team meetings.
In 2004, the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) presented their definitions of telemedicine . VC is defined as a real-time, live, interactive program in which one set of participants are at one or more locations and the other set of participants are at another location. The VC permits interaction, including audio and/or video, and possibly other modalities, between at least two sites . A similar definition is used in the Telemedicine Journal and e-Health .
This article presents the current status of VC as a clinical tool among surgeons. It is based on a literature review and our own experience.
Materials and methods
This review is based on a PubMed search using EndNote X1 (San Francisco, CA, USA) for relevant publications published through November 2008 as well as the experience from the Norwegian National Centre of Telemedicine in the use of VC. The search terms were telepresence, video-conferencing, video-teleconferencing, telementoring; and they were combined with the search terms surgery, trauma, follow-up, education, and multidisciplinary teams. A total of 517 original research hits yielded 51 manuscripts. We also systematically searched the reference list of included studies and the two telemedicine journals (Journal of Telemedicine and Telecare and Telemedicine and e-Health Journal). In addition, eight publications from the University Hospital North Norway and Norwegian National Centre for Telemedicine were included.
The two authors independently reviewed the titles, index terms, and abstracts of the identified references and rated each paper as “potentially relevant” or “not relevant.”
The International Telecommunication Union (ITU)  has defined several technical standards for VC equipment. These standards determine whether VC equipment from different manufacturers (e.g., Tandberg, Polycom, Sony, Microsoft, Aethra, among others) can communicate and handle data transport. In addition, ITU has defined several subgroup standards, such as sound, video, parallel video streams, and data encryption. The latter is important for patient security, confidentiality, and privacy . Four technical solutions for data transmission during a VC are possible: satellite communication, Internet Protocol (IP)-based communication, Integrated Services Digital Network (ISDN), and third-generation (3G) mobile phones (Table 1).
VC via satellite
Conducting VC via satellite provides a portable method and can be used anywhere in the world provided the necessary satellite coverage for that area is available. This makes the equipment especially suitable for use in disasters and in rural areas with poor infrastructure. However, the cost is high—for the equipment itself (Tandberg 30 000 USD) and for the rental to access a satellite (500–1000 USD/month). There is usually considerable latency in both video and audio (1–2 seconds) compared to VC via IP.
VC via IP
The use of IP for VC has several advantages. In closed networks, such as the Norwegian Healthcare Network, there is usually minimal time latency, and the signal quality is good. However, if the open Internet is used, there are no guarantees of quality of service, as it is dependent on the amount of traffic on the Internet. There is usually a reasonable price for line rental.
VC via ISDN
ISDN use for VC has seen a reduction in the Western world after introduction of the 3G mobile phone.
VC via 3G mobile phone
Using a 3G mobile phone for VC is widely used in the medical community [6–8]. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. It is easily accessible for a reasonable price on the commercial market. The 3G phone method is dependent on special features in the mobile telecommunication network. Although such features are not available in all countries, 60% of the population of South Africa has access to 3G bandwidth; and in Nigeria and Uganda 90% of the population has access to 3G bandwidth . There are, however, several disadvantages. There is usually a small display, and the quality of the video is poorer than standard video equipment. The camera lenses are usually of lower quality than standard VC equipment. The 3G mobile phones use separate communication standards and cannot communicate with traditional VC equipment. Data encryption is not possible with a 3G mobile phone.
VC for surgical education
Video-conferencing is widely used for educational purposes by surgeons throughout the world. The rapid evolution of scientific and technical knowledge in surgery explains the demand by surgeons and surgical students for easy and full access to high-quality information .
In remote areas, VC has proven to be an effective educational tool. In Norway, graduate education in orthodontics (surgical treatment of irregularities of teeth and the jaw) has so far been available as a full-time 3-year program at the universities in Oslo and Bergen only. To make training in orthodontics more accessible in other parts of the country, a pilot project supported by the Ministry of Health was established in 2002 . The participating institutions were the Public Dental Health Service in Tromsø, University of Oslo, University of Tromsø, and the Norwegian Centre for Telemedicine. The basic elements in the training program were joint courses at the University of Oslo (e.g., laboratory courses, hands-on courses) (about 8% of the curriculum); treatment of patients at the University Hospital in Tromsø (about 45% of the curriculum); and academic training such as seminars, lectures, and courses in “a virtual classroom” (about 45% of the curriculum). The virtual classroom included daily sessions with VC of seminars, courses, or lectures and Intranet access for distribution of teaching material and contact between teachers and students at the university hospitals in Tromsø and Oslo, 900 miles apart. The goals for the project were to train orthodontists who are most likely to stay in northern Norway, provide the new dentist education in Tromsø with teachers for undergraduate students, and evaluate whether this concept could serve as a model for training in other disciplines and hospitals. After 3 years of education and practical training, a joint examination with an external examiner was arranged at the University of Oslo, which the students successfully passed .
An Australian study sought to address this issue by providing synchronous tutorials in pediatric surgery using VC at two rural sites with the tutor located at a metropolitan pediatric clinical school. VC surgical tutorials were highly valued by graduate medical students as an educational method .
There is a dire shortage of medical specialists, and many countries lack suitably qualified doctors to train medical specialists. VC offers the opportunity to share scarce human resources. A successful educational VC project was recently reported from Africa, where the shortage of pediatric surgeons is acute .
Telemedicine, using interactive VC, is an effective method for didactic lectures in a surgical clerkship. This technology allows students to receive interactive lectures at remote clinical sites without the need to travel long distances . Similar results have been reported from both industrialized and developing countries [15–20].
VC in multidisciplinary teams
Bringing together multiple experts to focus as a group on a single patient is now a formidable organizational and logistical challenge. With VC, discussion of a series of patients among a broad range of experts is possible across vast distances, resulting in a level of consultation at a cost otherwise not possible. Multidisciplinary teams (MDTs) should improve coordination, communication, and decision-making between health care team members and patients and hopefully produce more positive outcomes. VC, as a tool to improve communication between different levels of health care, has been described from a number of surgical subspecialties [21, 22].
After introduction of an MDT approach in cancer care, VC has also been introduced as a clinical tool in this setting. Norum and Jordhoy published a study demonstrating the feasibility of VC for clinical and educational support between specialists at the University Hospital of North Norway and colleagues at the oncology and palliative care unit of the Nordland Hospital in Bodø, 300 miles apart. VC was a success in the education and clinical case discussion with the remote oncologists in Bodø. During a 12-month period, 32 VCs were performed; the study demonstrated that telemedicine can be used to incorporate a remote palliative care unit into a university department .
Dickson-Witmer et al. recently published a study of a VC network to discuss prospective patient management issues. Information was shared on a weekly basis with discussion of treatment decisions and diagnostic procedures. The VC led to an increase in National Cancer Institute treatment and accrual to cancer control clinical trials .
Three studies have published experience from breast cancer surgeons participating in MDTs. The VC was compared with the previous face-to-face clinical meetings through questionnaires, attendance, number of cases discussed, and anthropological analysis. Multidisciplinary case discussion can thus be facilitated by VC [25, 26].
Kunkler et al. proposed a comprehensive methodology to assess the clinical and economic effectiveness of VC in MDTs . This methodology was later tested in a randomized breast cancer trial , where 473 MDT patient discussions in two district general hospitals were cluster randomized to the intervention of telemedicine linkage to breast specialists in a cancer center or to the control group of “in-person” meetings. VC was cost-effective, and breast cancer MDTs have clinical effectiveness similar to that of standard “in-person” meetings .
There is a shortage of thoracic surgeons in the United Kingdom, and MDT meetings by VC were therefore introduced. The telemedicine meetings saved more than three working weeks of thoracic surgical time during the year .
The MDT meetings are used for establishing diagnoses; for tumor, node, and metastasis (TNM) classification; and for treating patients with head and neck tumors. In a Swedish study, telemedicine was introduced to link the regional hospital to two of the three district general hospitals. The conclusion was that costs could be saved by carrying out MDT meetings by means of telemedicine instead of face-to-face meetings .
A recent report on cancer services in Wales recommended an integrated cancer service with VC as a clinical tool. Regular MDT meetings reduced the need for patients to travel. They also increased access to expert opinion and reduced the delay in implementing treatment .
VC in trauma and emergency medicine
Management of trauma patients requires fast, definitive, precise care as well as major resources and continuous expertise. Most trauma centers around the world are concentrated in urban settings; consequently, most of the world’s population is not covered by specialized trauma systems. Telemedicine for trauma and emergency management is therefore emerging as a new frontier and is evolving as an integrated part of trauma care in modern trauma practice. So far, the use of VC and mentoring over distance has been the cornerstone of the present technologic solutions . In emergency situations, there are a limited number of medical specialities on duty in a local hospital. A possibility to improve the accessibility of emergency specialists is to communicate over distance in the emergency situation.
A VC system, configured and modified for this purpose, was implemented at Longyearbyen Hospital Spitsbergen and the Dispatch Centre at University Hospital of North Norway some 600 miles apart. The technical solution was based on a high-capacity fiberoptic cable between the island and mainland Norway, provided by the National Aeronautics and Space Administration (NASA) during the construction of Svalbard Satellite Station (SvalSat) . In the trauma room in Spitsbergen, a VC unit with an oversight camera and a camera on the ceiling, which was able to zoom and change angles, were installed (Fig. 1). This VC unit was connected with the University Hospital trauma VC room. In this VC room, the trauma surgeons have remote control of the cameras in Spitsbergen (Fig. 2), and biological parameters are shown on a separate screen. From Tromsø the trauma surgeons can follow the development of the situation and together with the local team decide priorities, treatment, procedures, transport, and need for support. During the project period, much of the focus on the testing was on team communication and interaction. The project was intended to improve the communication between the medical staff at the local hospital and the trauma surgeons in the university hospital by using VC. The study focused on the possible benefits of VC. Are the decisions quicker and more correct? Does the communication improve cooperation and local competence?
To describe the advantages and disadvantages of communicating through the system, we selected a limited number of cases tested by the emergency teams in the local hospital in Longyearbyen. On the specialist side, the clinical emergency specialists responded to problems as they arose. To measure the value of VC, we compared it to the traditional use of telephone communication. The method of testing was observation and interview of both local teams and specialists at the Dispatch Centre. Preliminary results suggest that this VC solution improves the interaction between the two medical teams and benefits certain groups of patients. Clinical testing and experience is needed to find the right kind of use. It is also necessary to establish routines for organization and communication .
Recently a U.S.-based study  showed that telemedicine significantly improved evaluation and management of trauma patients at a rural local community hospital. More severely injured trauma patients were identified and transferred to the trauma center more rapidly. Based on experience from the pilot trial between Tromsø and Spitsbergen, a trauma VC network is now being built in North Norway, linking the local hospitals with the university hospital in North Norway (Fig. 3). Other data from University Hospital North Norway show that VC between referring hospitals and a regional neurosurgical service influence patient management and reduce the frequency of patient transfer .
Latifi et al.  described the telemedicine trauma system at The University Medical Centre and the Arizona Telemedicine Program. These networks are not only used by trauma services but also by all other medical disciplines; they serve close to 1.5 million people. The presence of the trauma surgeon, through VC, has infused confidence in local doctors and communities and is being used to identify knowledge gaps among rural health care providers and the needs for instituting new outreach educational programs. A similar trauma program is presented in an Australian paper . A Virtual Critical Care Unit was created between emergency departments of a district hospital and a metropolitan tertiary hospital. Clinicians reported that the Virtual Critical Care Unit allowed greater support to remote clinicians; however, the specialists reported an increased workload.
New ways to use existing technology are emerging. Recently, a group of neurosurgeons reported new ways to use a simple, relatively cost-effective system using existing mobile phone network services and conventional hand phones with built-in cameras to capture carefully selected images from hard copies of scan images and transfer these images from a hospital without neurosurgical services to a university hospital. This method of consultation proved to be highly convenient and cost-effective . For orthopedic patients, VC via multimedia messaging service (MMS) demonstrated good reliability but poor diagnostic accuracy, which could have major consequences in emergency use .
Video-conferencing has been shown to be useful in the management of acute stress disorder and/or posttraumatic stress disorder in the aftermath of traumatic stress exposure. Access to expert assistance can have significant effects on prognosis. The authors discuss the potential benefits and some limitations of early trauma interventions using a VC link to access a civilian population whose access to care is compromised by prevailing conditions .
VC for follow-up after surgery
Video-conferencing is used as an instrument for follow-up of patients during the postoperative period and for outpatient consultation. At our hospital, we have extensive experience in the use of VC in the follow-up of hemodialysis patients  and in dermatology [41, 42].
In addition, a new project has started in the orthopedic department, where a VC line has been established between the university hospital and the district medical center Nordreisa, 155 miles away. In this project, both outpatients and postoperative patients are examined by a district orthopedic nurse under the supervision of an orthopedic consultant located at the university hospital (Fig. 4). This project has now been organized as a randomized controlled trial, where the primary endpoints are cost-effectiveness and patient satisfaction.
Several articles have reported the use of VC in the follow-up of surgical patients. Wallace et al. aimed to compare joint VC between general practitioners, specialists (surgeons), and patients with standard outpatient referral. This randomized controlled trial showed that allocation of patients to virtual outreach consultations was variably associated with increased offers of follow-up appointments according to site and specialty but led to significant increases in patients’ satisfaction and substantial reductions in tests and investigations. Efficient operation of such services requires appropriate selection of patients, significant service reorganization, and provision of logistical support .
A study from Finland investigated the use of VC in the examination of orthopedic outpatients. VC was found to be feasible, and the equipment functioned well technically. The conclusion was that VC between primary and secondary care could be used in the examination of orthopedic patients whenever no demanding imaging technology was needed .
Whether VC is cost-effective in the follow-up of surgical patients is still debated. The clinical effectiveness and costs of VC in orthopedics between primary and secondary care were examined in an 8-month prospective comparative study. The general surgery outpatient clinics of two Finnish district hospitals were compared. The direct costs of an outpatient visit were 45% greater per patient than for a VC. A cost-minimization analysis of the alternative interventions showed a net benefit of EU 2500 in favor of VC .
Another Finnish study had similar results. Wider utilization of the VC equipment for other purposes, or the use of less expensive VC equipment, would make services cost-saving even at relatively short distances .
Video-conferencing can be used in almost any medical specialty, although the specialties best suited are those with a high visual component. Wound healing and wound management are thus prime candidates for VC follow-up. Development of a suitable telemedical system in this field could have a significant effect on wound care in the community, tertiary referral patterns, and hospital admission rates [47, 48].
Mentoring via VC (surgical telementoring)
Telementoring—defined by SAGES as real-time interactive teaching of techniques by an expert surgeon to a student not at the same site —was first performed in 1962 by DeBakey [2, 49]. In 1997, Schulam et al. reported the first clinical pilot trial of telementoring .
Telementoring has been developed to allow a surgeon at a remote site to offer guidance and assistance to a less experienced surgeon and to reduce the complications associated with surgeon inexperience. In 2000, we established a VC link at 4–6 megabits per second (Mbps) based on the Norwegian Health Network between the Harstad local hospital and the university hospitals in Trondheim and Tromsø, 550 miles apart . We wanted to improve cooperation and sharing of competence resources between surgery departments of remote hospitals using advanced applications built on a next-generation Internet technology infrastructure. The first step was to improve the availability and accessibility of the highly specialized competence found at the university hospitals to the rest of the Norwegian laparoscopic surgeons. The project had two goals: to develop standard kits for surgical telementoring (open and laparoscopic) and to test the equipment during regular VC meetings and during surgical telementoring.
The system was built to handle regular VC from meeting rooms located in the surgical wards at the different hospitals, as well as surgical telementoring of open and laparoscopic surgical procedures from the surgical theater to the meeting rooms. The system in the operating theater was designed to be used without dedicated personnel. The racks with all necessary equipment are plug-and-play and can easily be connected on demand by existing personnel. When connected, the whole unit is remote-controlled by viewing stations participating in the surgery conference. The unit is based on a standard multimedia personal computer running Linux. The remote control includes pan/zoom of a motorized camera giving overview images of the theater, pan/zoom of a motorized camera mounted in the operation lamp, and switching the video source between the camera and endoscope (Fig. 5). The high-end version viewing station is basically identical to the station in the operating theater; projectors may be connected to reach a larger audience (Fig. 6).
The prototype system supports multipart “surgery conferences” with high quality audio and video channels. In addition to remote control of the video source and motorized cameras, the participants can dynamically control the video channel to give image quality priority over frame rate if needed because of bandwidth constraints. To enhance the cooperative aspect, the cursor of each participant is visible in the video image. The image can also be frozen and saved to disk for further documentation.
During the first year, 17 procedures were telementored, mostly laparoscopic cholecystectomies (LCs), between three hospitals participating in the project. In addition, regular VC meetings (lectures) between the surgical departments were conducted.
As a direct consequence of this project, VC surgical lectures were held with participants from France, Italy, Trondheim, and our own institution. Furthermore, we are currently working to develop a VC network (for surgical telementoring, lectures, education, and multidisciplinary meetings) between all the surgical wards in northern Norway.
Several studies of surgical telementoring over large distances have been conducted in various parts of the world. In 1999, a study presented laparoscopic procedures completed through an intercontinental telementoring system and the first telementored laparoscopic procedures performed aboard a naval vessel. The authors concluded that long-distance telementoring was an invaluable tool for providing instantly available expertise during laparoscopic procedures .
In 2000, a report on experience from laparoscopic urologic procedures with mentoring between Rome (Italy) and Baltimore (USA) was published . Similar experiments have also been performed by surgeons in the United States and Brazil , between the United States and Singapore , and inside Italy .
Dissemination of new surgical knowledge, skills, and techniques across the wide spectrum of practicing surgeons in the community is often difficult and slow and is even more problematic in rural areas. In an attempt to overcome the barriers that exist, surgeons located at a university hospital have been using broadband Internet and telecommunication systems to provide distance training and mentoring to community surgeons living in remote northern communities of Canada .
A study assessed the feasibility, safety, and utility of telementoring as a training tool in LC for higher surgical trainees. The authors concluded that telementoring in LC was a promising tool that might provide objective assessment of a trainee’s insight, skill, and progress in operative performance .
New applications for VC among surgeons were presented in an article from 2005, describing the use of telementoring for distant teaching and training in endovascular aortic aneurysm repair. This might serve as a model for developing similar projects for teaching other invasive procedures in cardiovascular medicine .
A recent study showed that surgical telementoring could be performed without expensive equipment. A cheap, user-friendly telementoring system was used during abdominal, vaginal, and laparoscopic surgery. The authors believe that surgical telementoring deserves attention and that their system could be an ideal tool for studies on telementoring in safe environments .
Why does a VC add an important factor during communication between different professions in the surgical community? What kind of information does live transmission of video or digital images add during communication between medical personnel?
In 2004, Maruping and Agarwal  presented the “task-technology fit model” as a theoretical model (i.e., “the degree to which technology assists a group in performing its portfolio or task”). According to Maruping and Agarwal , the advantages of VC are the following.
High immediacy in feedback: With VC all communication is conducted in real time; VC provides immediate feedback so the interpretation can be checked.
High symbol variety. Symbol variety defines the availability of multiple cues and language variety that are supported by the medium. VC provides multiple cues such as body language and tone of voice.
Communication with multiple participants simultaneously.
High richness. Richness is defined as the ability of information to change understanding within a time interval for tasks requiring social presence.
In a mentor–student situation, a recent study from our own institution by Johnsen and Bolle  demonstrated that video calls influenced the information basis and understanding of dispatchers. They emphasized visual observation as a way of constructing professional understanding when using VC, which may provide a new basis for dispatcher assistance. VC may also improve the student’s compliance. Video-communication can improve the dispatchers’ understanding of the students’ situation and the assistance they provide .
Surgery is, most of all, a visual speciality. Live pictures provide detailed information about anatomic landmarks, giving the mentor instant information about the patient’s normal anatomy and pathologic structures. Based on this instant information, the mentor can give advice to the operating surgeon and immediately correct his or her surgical actions. The same aspect is applicable during postoperative follow-up of patients and in trauma care, where visual information regarding clinical signs and symptoms, wound conditions, and radiologic pictures are critical to give the patient the best care. VC in the surgical community has helped deliver better care, especially in rural areas.
There is a knowledge gap between central and local hospitals . This is even more problematic in rural countries, with community surgeons dispersed in remote corners of a large country and with harsh winters entailing geographic and logistical challenges. Introduction of VC as an educational tool has led to a decrease in this knowledge gap [10–20, 57].
Until recently, the only proven technique of teaching surgeons new skills were one-site mentoring completed with hands-on course training and conferences. However, because of an overwhelming need for mentors/proctors and supporting evidence in the literature, telementoring is an application whose time has come [50–60, 62–65].
The use of VC has now spread to other areas of the surgical community after decades of surgical telementoring. This adoption of new areas in which to use VC has accelerated after the introduction of the Internet, the decrease in VC equipment costs, and simplification of the technology used.
The purpose of this article was to present our own experiences with VC as a clinical and educational tool and to perform a review of the topic. As far as we know, this is the first review article of its kind. In our opinion, VC has great potential to change and improve clinical practice among surgeons.
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We thank the entire staff at the Norwegian Centre for Telemedicine for useful comments and reports on the various VC projects. We also acknowledge the press section at the Norwegian Centre for Telemedicine for providing all of the photographs used in this article. Grant support was provided by the Northern Norway Regional Health Authority (Helse Nord RHF).
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Augestad, K.M., Lindsetmo, R.O. Overcoming Distance: Video-Conferencing as a Clinical and Educational Tool Among Surgeons. World J Surg 33, 1356–1365 (2009). https://doi.org/10.1007/s00268-009-0036-0