Chapter 105 Wilderness Medicine Education
For online-only figures, please go to www.expertconsult.com
The features of wilderness medicine that make it so attractive to an ever-increasing number of health care professionals also present challenges to its educational programs. The need for special attention to the learning process in the discipline has been called for in the peer-reviewed literature since the early 1990s.3,4,18,52 Some work has been done at the individual program level to incorporate evidence supporting modern concepts of adult education in health care. However, there are no universally accepted standards for the delivery of education or assessment of outcomes unique to this diverse discipline.
The spectrum of learners in wilderness medicine closely mirrors the types of experiences to which the discipline applies.76 On one end of the spectrum are laypeople who seek to acquire knowledge on basic first aid or exotic travel for reasons of safety or security. Next are those seeking formal search and rescue medical training, including conventional emergency medical technician (EMT) and paramedic training tailored to the wilderness setting. The next level is represented by expeditionary advisory and emergency care provided in isolated circumstances by multiple types of providers, including EMTs, nurses, and physicians. Finally, there is the group of technically oriented researchers and other professionals who seek topic- or environment-specific experience and fellowship with others that share their level of interest (Figure 105-1, online).
FIGURE 105-1 Wilderness medicine learners are a diverse group with varied backgrounds, skills, and motivations for learning.
(Courtesy Fred Baty.)
In 1991 the Wilderness Medical Society (WMS) proposed a model for developing curricula to teach wilderness prehospital emergency care (WPHEC).76 It was hoped that this would stimulate movement toward a disciplinary standard that would elevate the quality of this type of training throughout the United States and abroad. In this work the WMS noted the differences between wilderness and urban prehospital emergency care. These lie at the heart of what makes wilderness medicine education unique. They are summarized as follows:
FIGURE 105-2 Wilderness medicine is a discipline practiced and learned in and around the extremes of environment.
(Courtesy Fred Baty.)
A unique aspect of wilderness medicine is the close relationship of the often-harsh environment to maintenance of the knowledge base. Wilderness medicine practitioners are typically action-oriented professionals who prefer to learn and practice their craft in the outdoors. This speaks to the very nature of wilderness medicine. However, despite this link, there is a need to separate preparation and conditioning for the environment from education in order to facilitate the learning process.3 Logistics and varying skill levels of learners make it unreasonable to carry out full practical exercises for every wilderness medicine topic in every venue at which they are taught.
Principles of Adult Learning
Basic Principles
Learners generally prefer educational approaches that focus on concepts and principles instead of fact-based information.75 A concept derived from the teachings of Sir William Osler and known by nearly every classically trained physician holds that one should never spend time memorizing facts from a book at the expense of hands-on patient contact. This is why problem- and scenario-based learning has been incorporated into most modern health care education programs. The nuances of problem solving cannot easily be garnered from a book. Osler might say that precious time is best spent at the bedside rather than on what the student can be expected to read alone.
Learners respond favorably when they are able to participate in developing their own learning objectives.75 This is a pronounced difference between adult and child educational processes that should be properly accounted for and leveraged. The negotiation process between student and teacher that leads to properly established objectives builds relationships and trust that are at the foundation of the adult learning process. Allowing this to occur may seem counterintuitive, especially to educators who adopt a more directive style of teaching. However, participation by learners in goal setting facilitates ownership of the process and leads to higher levels of performance.
Feedback to students may be the most important ingredient to solidify learning and complete the education cycle.75 To be effective, this should be direct, specific, and individualized to each learner. There are many reasons why this may not occur in health care education. They range from the simple logistics of managing large classes to litigation and are often cited for failing to use this powerful educational tool.
Concepts, Theories, and Models
The Education Cycle
The notion that broad concepts of the process of learning can be described as a cycle is not new. Pattinson and Matthews58 recently applied it to wilderness medicine while planning a mountain medicine curriculum. As depicted in Figure 105-3, the program director first makes an assessment of the needs of the learners; he or she gets to know the audience. Next is the often-underestimated task of establishing tailored and focused learning objectives. The educator then selects teaching methods and settings that best accomplish the objectives while meeting the needs and expectations of the learners. Finally, after the experience, the educator makes an assessment to ascertain whether learning has occurred. This final step may be the most difficult and least attended of all. These elements will be addressed later.
Experience-Based Learning
Kolb’s model41 of learning is based on how individuals internalize and process learning experiences. Learners perform an action, referred to as a “concrete experience.” They then process the new information by “reflective observation.” Next they consider how the new information can be applied to their unique circumstances by “abstract conceptualization.” Having internalized the experience, they try it by “actively experimenting” with what they have learned to apply it in new and unique ways. This model is reflected in several of the teaching and assessment techniques discussed later, especially those that address concrete skills.
Education and the Human Organism
Setting the conditions for learning can be conceptualized by using Maslow’s famous explanation48 of how humans address fundamental needs. Vella’s work71,73 in popular education extends these ideas to the realm of education in the social context but still deals with the rudiments of human nature.
Unmet physiologic needs, such as warmth and hunger, tend to impair learning as the human organism prioritizes toward survival. Unfulfilled security needs, which Vella71 refers to as safety, distract from any process that does not pose an immediate threat. In adult education, safety issues may be subtle. Students who do not feel free to voice opinions or reveal a deficiency may be said to lack a safe learning environment. Identification with a group of learners addresses the need for belonging that is used by organized team sports and the military. The need for self-esteem may be met by recognition for academic achievement in front of one’s peers. Finally, the highest level of Maslow’s concept, self-actualization, is represented by satisfied expectations on the part of the learner. By expanding these concepts and directly addressing each in the classical hierarchical fashion, a program director can remove many obstacles to learning during the planning phase of the educational experience. A learning event that accounts for them will have a high likelihood of success and impact the student’s life well beyond the experience.
Learner Sophistication
Another powerful tool available to teachers is the identification of the level of understanding, or “sophistication,” of the learner. Neal Whitman proposed four levels that learners traverse as they acquire new knowledge and skills. Correctly matching teaching methods to these will improve the overall experience by saving time and increase the likelihood of fully meeting expectations.75
Principles of Androgogy
There have been numerous efforts to roll learning theories together into a concise package of tools for health care education. To this end, the work of Malcolm Knowles is widely read and often cited by education academics. He put structure to the concept of helping adults learn and called it “androgogy.” He suggested that through the principles of androgogy, adult learners are most successful when they are assisted in the process rather than directed through it.39 Knowles made five basic assumptions about adult learners from which he derived his principles. They can be summarized as follows: (1) Adults tend to have internally and not externally focused motivations for learning; (2) The learning process should be related to solving real-life problems; (3) Existing knowledge and experience greatly influence learning; (4) Self-direction improves the learning experience; and (5) Adults learn best with problem-based rather than subject-based methods. Knowles’ seven principles of androgogy are summarized in Box 105-1.
Learner-Centered Education
Jane Vella has applied learning theory in unique ways to the social context across different cultures. She recognized that education lay at the heart of many social issues. The teacher’s message is often lost in the delivery because of avoidable cross-cultural and interpersonal obstacles. She maintains that the key to adult learning is clear dialogue between the teacher and learner.71–72 Educators too often fail to establish productive dialogue and hence select ineffective teaching approaches. Vella suggested that traditional hierarchical teacher-student roles be discouraged. Teachers become facilitators. Barriers to dialogue are “addressed and eradicated.” She offered to popular education a paradigm that places the learner at the center of the educational universe. Her principles link theory to practical use in a way that enables learning in challenging circumstances. Vella’s principles are summarized in Box 105-2.
Learning-Oriented Teaching Model
Cate and associates9 recently published their notion of a model of teaching based on concepts from educational psychology. Their proposals are meant to influence all aspects of adult education, especially those of curriculum design, teaching techniques, and teacher assessment. An attractive feature is a method to “inventory” and match teaching and learning styles to improve outcomes. The authors build a model around what they identify as the “components of learning” and the “amount of guidance” that learners require to navigate the experience. Their premise is that, because education seeks to enable people to “function independently,” the process should foster self-regulation of learning. In the model, learners mature from “externally guided” learning through “shared guidance” to self-guided or “internally guided” learning. This applies to both cognitive (what to learn) and affective (why to learn) components of learning.
Putting It All Together
Theories and models are meaningless without practical application. Directly applying ideas from theorists with diverse backgrounds and agendas into the realm of wilderness medicine education is difficult. Kaufman38 recently reviewed several adult education theories in the context of health care education. He examined them for key areas of commonality and offered simple principles to “guide” medical educators as they think about and plan educational experiences (Box 105-3). Wilderness medicine educators can easily adopt these.
Educational Techniques
There are a myriad of delivery techniques available to the modern medical educator. Despite being extensively studied across many disciplines, identifying a method of educating the medical learner in a way that results in consistently improved performance and outcomes exceeding other methods remains elusive.62 To be sure, there is no single method that is effective for all types of learners in all settings. In wilderness medicine this is compounded by the degree to which hands-on skills depend upon a solid grasp of basic science and the flexible application of clinical medicine.
Selection of the most effective methods depends largely on the setting as well as the expectations and needs of learners. The prudent curriculum designer will avoid incorporating attractive methods of presentation designed to capture attention without substantively improving the educational quality. Schweinfurth characterized the problem of finding the right mix of techniques when he described his use of interactive training among otolaryngology residents. He referenced comments from a focus group of trainees, discussing what he called “innovative learning strategies.” He found that learners were hesitant to endorse innovative strategies in order to avoid complex exercises that may compromise limited time available to conduct didactic sessions. His learners found some attempts at innovation as ‘too experimental’ or a ‘waste of time.’63 The lesson should be that innovation, as an end in and of itself, may not serve the learner. Innovation that causes the learner to walk away with a sense of improvement can be considered successful.
Lecture
Lecture is the most often used educational technique. It offers several important advantages. Large amounts of information can be delivered in relatively short periods of time. Planning is generally easier for the lecture format. It requires little logistic support and only one teacher. It works well for highly technical information that the learner will most likely have to study again in order to internalize. Lectures can be easily enhanced with audiovisual aids. All of this adds up to a degree of efficiency that is highly attractive to the resource-limited educator. In one small but interesting study, Reed62 illustrated that, despite the availability of highly technical and resource-intensive teaching methods, a simple “low-cost, low-tech” lecture approach can offer rewards in terms of improved skill performance (Figure 105-4, online).
The lecture technique has several equally important disadvantages. Learning is highly dependent on the delivery skill of the teacher. Because it is passive, many adult learners do not respond as well to this approach. It is generally accepted that levels of retention of material presented by pure lecture are lower than more active teaching techniques.67 There is generally limited opportunity for hands-on applications and practice. Thus the usefulness is limited in some areas of wilderness medicine that are largely skills oriented. The more restricted the opportunity for student questioning and dialogue, the less effective this technique becomes. Students can often more effectively learn by themselves information to be presented by lecture. Brookfield8 discussed methods to enhance the lecture as a means to communicate information (Box 105-4).
BOX 105-4 Methods to Enhance the Lecture
Problem-Based Learning
A highly effective trend in health care education is the use of problem-based learning (PBL). PBL can take various forms, but generally learners are presented with a problem and are guided through a structured discussion that leads to a preestablished solution. This learner-centered approach has proven popular among students and demonstrates comparable outcomes when compared with other, more traditional formats. An interesting aspect to PBL is that student-led experiences tend to be more highly favored among participants than those facilitated by faculty, yet the outcomes remain at least comparable in terms of satisfaction and examination scores.29,66
PBL offers great versatility to the curriculum planner. It can be used whether the focus is on acquiring pure fact-based knowledge or practical skills. It is most often applied in the small-group setting and therefore may pose logistic challenges in some space and resource-limited settings. It complements the strengths of small-group learning in that it reinforces communication and problem-solving skills, teamwork, individual responsibility for learning, and the need to share knowledge.77 It tends to give the best results when it is structured and forces learners to use critical thinking skills. It fosters the process of analysis, organized problem solving, and decision making using group discussion to direct and reinforce learning. The general format for PBL is presented in Box 105-5.5
Scenarios and Role-Play
Scenario-based and role-play training is familiar to prehospital emergency care educators but less widely used in traditional medical education. It maximizes many of the strengths of newer approaches to adult education because it guides self-motivated students through a process of “discovery” of the information.45 The main role for teachers in this format is to facilitate, not direct, the learning process.30 Being an expert in the clinical details of each case is less important than understanding how to apply problem-based learning. This method is often scripted and makes use of actors, props, and moulage to simulate real-life situations. The logistics of carrying out this aggressive training technique may be prohibitive to some programs, but the investment is worth the effort in terms of improved outcomes and retention of knowledge by learners. Nearly all organizations that train prehospital wilderness medicine practitioners use some form of complex case- or scenario-based learning program. The use of role-play has benefits beyond the teaching and development of technical skills. One recent randomized controlled trial confirmed the utility of using role-play when teaching technical skills in the area of communication. The authors of this small study of 36 medical students randomized to learn a skill with and without role-playing concluded that, although there were no differences in technical performance between groups, the introduction of role-play as a training method enhanced the realism of technical skills training and led to better patient-physician communication53 (Figure 105-5).
Discussion
There are two basic modes of discussion-based learning.43 The Socratic questioning method challenges students to identify the most important features of a specific problem and then reconstruct it using general principles that are the true focus of the discussion. Developmental discussion approaches the problem in parts. It keeps all students focused on one part at a time and takes advantage of the group setting to ensure that teaching points are addressed.
Teacher-facilitators may highlight the discussion with the powerful tools of analogy, discovery, and induction to stimulate learning and ensure retention.16 Analogy illustrates concepts by asking students to visualize using examples with which they are already familiar. The process of discovery leads students through a sequence of steps from the most basic to the more complex to guide them to the final goal of deeper understanding of the principal learning objective. Induction asks students to take general lessons from specific examples or experiences, make comparisons, and draw new conclusions relevant to the learning objective. These three techniques can be applied in any setting that involves learner interaction with the teacher.
Small-Group Learning
The selection of a teaching method is highly influenced by class size and quantity of information that must be learned. Large classes that must digest substantial amounts of information tend to push faculty into selecting passive modes of teaching. The traditional CME conference at which hundreds of attendees review highly technical material is an example of this. However, passive, lecture-based methods are not the most effective and often not the most efficient for all types of learning, especially in wilderness medicine. It is now widely accepted that skills-based learning presented in a small-group setting is a better way to teach practical skills44 (Figure 105-6, online).
To understand group learning is to understand how the individuals within the group interact.
Bruce Tuckman’s original concept of the developmental sequence of small groups should greatly influence how teachers plan and conduct these activities.26,36,69,70 The general strategy for teachers is to become familiar with the stages, recognize their manifestations, and use a planned approach that gradually releases control of the teaching process to the group as members become more able to direct their own learning.
The role of the teacher in a small-group setting should be oriented toward facilitation of learning rather than direct delivery of material. However, the teacher remains accountable and cannot take a completely hands-off approach and expect that objectives will be met. By attending to the details of process, the teacher ensures that the learners do not have to perform this task. The teacher creates the proper learning environment and keeps the process on track. Some common mistakes made by small-group “facilitators” include the following: the teacher presents a lecture; the teacher talks too much; students do not participate unless prompted or directly questioned; the students lack preparation for the session (e.g., prereading); there are overbearing, domineering students; and participants want to be provided a quick and simple solution to the problem rather than engage in the process of group discovery.35
Despite not being part of the learner group, the teacher has great influence over the process and the outcomes. A poorly prepared teacher ignores the internal dynamics of the group and sets up the experience for failure. Some techniques available to avoid these problems include: agreed-upon rules for the conduct of sessions; clearly stated tasks and objectives; use of the rhetorical method of questioning to stimulate thinking; taking a lengthy pause after posing a question, allowing students to answer; not offering immediate solutions or guidance unless participants appear to be taking the wrong path; attending to body language and mannerisms of all participants, both when they are speaking and when they are listening; addressing the entire group, rather than a single student, with mannerisms and eye contact.35
The general steps in preparing for and conducting small-group teaching are summarized as follows:
Distance Learning
The advantages that the Internet offers to medical educators are many. Even courses that are not offered as complete web-based packages can be supported by limited Internet applications such as e-mail, distribution of materials, enrollment, needs assessments, and testing. To this can be added videoconferencing, discussion boards, live topic-specific chat rooms, and presentation of live events via video streaming. Nearly any software application that can be used on a home computer can be offered in some fashion over the Internet. With the advent of high-speed connectivity and constantly changing security programs, obstacles to efficiency and learner security have been minimized. Virtual learning environment software enables all of these applications to be managed efficiently while keeping the focus on the learner and not the technology.32
Field Experiences
Medical schools and residencies are following the lead of commercial WPHEC programs and moving learners out of the classroom and into the field.45 Rotations and electives that include field-training experiences of various lengths are now highly sought after. These have the effect of maintaining high levels of student interest and satisfaction. They offer direct relevance and immediate application of newly learned skills. When coupled with effective group process and feedback, the benefits of field training make this a powerful venue for skills-oriented education. These experiences are most often part of an overall curriculum that incorporates other techniques, such as lecture and problem-based learning, in a didactic setting (Figure 105-7).
Concerns include safety and security of participants as well as liability issues for the sponsoring organization. The logistic support package can be expensive and complex. The quality of the experience is greatly influenced by uncontrollable factors such as weather and climate. Proper screening and selection of participants are critical to success, especially in programs that are conducted in remote locations or in physically demanding environments. Multiple techniques, such as scenarios and hands-on practical exercise, can be applied simultaneously to maximize the learning experience. Field training affords an opportunity to introduce nonmedical skills such as leadership, wilderness survival, and land navigation.45 This not only generates interest but also creates well-prepared learners and an overall lower level of risk.
Competency-Based Medical Education
Description
Since 1981 the Accreditation Council for Graduate Medical Education (ACGME) has served as the principal accrediting organization for physician residency training programs in the United States. As such, the ACGME drives improvement in the overall quality of health care in the United States through development of policies governing how physicians are trained and by accrediting training programs based on those policies.2,47
GME programs now must teach and evaluate residents using techniques and tools based on six core competencies. Moreover, it is a requirement that accredited GME programs incorporate these competencies into curriculum design, development of training objectives, and building of 360-degree assessment systems for both faculty and learners. Programs must also validate the data and methods they use to train and assess performance using external measures2,37 (Box 105-6).