Introduction
Physician assistants (PAs) are healthcare professionals who practice medicine as a part of the healthcare team under supervision of a physician. PA profession was created in the 1960s in the United States in response to a shortage of primary care physicians [
1]. Recently, due to changing work hour restrictions of medical residents, PAs and nurse practitioners (NPs) have grown significantly in several countries [
2,
3]. In countries where PAs formally work as a part of a healthcare team, PAs are systematically trained and formally qualified to perform a wide range of clinical duties, including diagnosing, treating illnesses, prescribing medications, and ordering diagnostic tests (1). Many studies have reported high levels of satisfaction with high-quality care by PAs, which are indistinguishable from physicians [
2,
4‐
6].
Since healthcare system in South Korea also faced problems, such as work hour restrictions of medical residents and shortage of residents in some professional fields, PAs began to work as part of the healthcare team or replace residents in some professional fields [
7,
8]. NP has also gradually emerged to address shortage of residents [
3,
9]. While NPs in Korea are provided a formal education and training program, there is no accredited program for PAs in Korea [
7,
8]. PAs in Korea can replace residents’ job after receiving only short apprenticeship training provided by the department where they will work without a systemic education curriculum [
8]. Moreover, roles and scopes of responsibility of PAs have not been described in law or institutions where PAs work. Hence, PA in Korea is basically different from officially introduced PA by government level with proper education requirements and certification programs such as PAs in the United States, United Kingdom, and Canada [
1,
5,
10‐
12].
Most PAs in Korea are selected and assigned among nurses because PAs not only need to possess medical knowledge and skill, but also need to have patient care competencies [
7]. However, since PA in Korea has not yet been recognized as a qualified professional in the healthcare system, most nurses working as PAs are confused about their roles and identities [
7,
8]. Thus, nurses working as PAs experience confusion between official qualification of nurse and their role as PA, leading to a professional identity crisis. Both professional identity crisis and role conflict can lead to negative organizational outcomes such as burnout, job stress, and job dissatisfaction [
13‐
16]. In addition, the worse the work environment, the lower the job satisfaction [
7,
16]. Especially, work environments such as workload and practice scope can vary depending on the professional field in which PA work. However, there is no common staffing standard or practice guideline [
8]. Thus, PAs can experience stress and psychological discomfort, which can lead to job dissatisfaction [
14,
17].
As nurses’ professional roles expand, nurses in clinical practice face various moral problem and situations. PAs and NPs also encounter many moral problems in the complex work environment. They feel frustrated and powerless, which can lead them to change or leave their jobs [
18,
19]. Moral distress refers to a painful and psychologically uncomfortable feeling experienced when healthcare providers are aware of the ethically correct action to take. However, they are constrained from taking it [
20]. Moral distress is a complex and challenging problem that can significantly impact the healthcare team, ranging from hindering their ability to advocate for patients to leaving their jobs or professions [
20]. Moral distress of PAs and NPs can arise from a variety of causes, such as role conflict with physician, organizational constraints or policies that limit the provision of optimal care, and lack of autonomy or decision-making power in patient care [
21,
22]. Hence, moral distress is correlated with both work environment and professional identity. Unfortunately, nurses working as PAs in Korea are likely to experience moral distress because the rationale for independent decision-making and their legal and ethical responsibilities are unclear [
16].
Therefore, the purpose of this study was to investigate effects of work environment and professional identity on job satisfaction of nurses working as PAs and identify the mediating role of moral distress in such effects.
Discussion
This study investigated the impact of work environment and professional identity on job satisfaction of nurses working as PAs and identified the mediating effect of moral distress in this relationship. Job satisfaction level of nurses working as PAs was moderate (3.08 out of 5), similar to other studies targeting nurses working as PAs in Korea [
16]. However, it was lower than PAs and NPs [
2,
4,
5,
17,
29,
30]. This gap in job satisfaction between PAs in Western countries and Korea might be attributed to differences in PA model such as practice scope, education requirements, and legal and institutional recognition. PAs in Korea have not yet been recognized as official professionals in the healthcare system yet. Thus, there is no accredited training program or practice guideline for PAs [
8]. However, many staff are performing PA job in actual clinical practice, although PA profession is not officially recognized in Korea. In addition, most staff are nurses because they are qualified in holistic patient care with medical knowledge and skills. Hence, many nurses working as PAs who have to perform officially unrecognized jobs without training struggle with professional identity and role conflict, leading to job dissatisfaction [
13,
16]. Since job dissatisfaction ultimately leads to turnover [
31,
32] and low-quality care [
33], job satisfaction of nurses working as PA should be managed.
This study showed that work environment and professional identity were factors influencing job satisfaction of nurses working as PAs, consistent with other studies [
15,
16,
32,
34,
35]. The more nurses working as PA perceived their work environment to be poor, the more they were dissatisfied with their work. In addition, moral distress mediated the relationship between work environment and job satisfaction. Since work environment includes several supportive systems of hospital such as material supply and environmental supporting, nurses in poor work environment are likely to experience moral distress. Moral distress referring to a psychological discomfort arises when a person is aware of the right course to take but is prevented from acting on it by institutional constraints [
20]. Many previous studies have found that moral distress is caused by institutional and context factors [
20,
36‐
38]. For nurses working as PA in South Korea, the unclearly defined PA work and the organizational atmosphere in which PAs are not officially recognized might have led them to experience a lot of moral distress while performing their job. In the present study, not only work environment, but also professional identity affected moral distress.
Professional identity refers to having the authority to make decisions and freedom to act in accordance with one’s professional knowledge base. Many previous studies have indicated a high level of moral distress in nurses who encounter patients primarily with little independent authority [
21,
39]. In Korea, where PA job is not officially recognized and PA has no independent authority over the job, nurses working as PAs encounter many situations in which they have to perform tasks that exceed their responsibilities as nurses. For example, nurses working as PAs in Korea can prescribe and perform some medical treatment outside the RN scope of practice [
7]. Moreover, as their practices are not even legally protected, legal and ethical issues in their practices are sometimes raised [
8]. Hence, nurses working as PAs are experiencing a role conflict between their legal status and the work they perform. They are asked to perform practices requiring high authority. This situation ultimately leads to job dissatisfaction through a high moral distress [
16]. To increase job satisfaction of nurse working as PA, it is preferentially necessary to establish their job identity by clarifying their roles and scopes of practice. When professional identity is strengthened through legal and organizational changes, moral distress experienced by nurses working as PAs is expected to decrease and job dissatisfaction due to this will also decrease.
In our study, the moral distress level of nurses working as PA was 88.02. Although it was difficult to compare this study to other studies due to large variations in moral distress depending on working place and country, the level of moral distress in this study was lower than that of nurses working at ICU [
40]. Since previous studies have shown that moral distress is influenced by frequency of exposure to ethical situations [
20,
36], moral distress of nurses working as PAs is expected to be lower than that of nurses working as critical care unit who frequently encounter ethical situations such as end-of-life nursing and end-of-life patient nursing. However, the level of moral distress of nurses working as PA in this study was significantly higher than that of most nurses working in general wards [
38,
41,
42]. The high moral distress in this study might be attributed to limited decision authority of nurses working as PA and their poor work environment. Unlike other countries where PA is officially recognized as a job and produced through an accredited program [
1,
43], many nurses are performing PA duties as needed by healthcare institutions without any accredited training [
8]. Thus, many nurses working as PAs have experienced high moral distress, which can lead to job dissatisfaction. In this study, it was also found that moral distress affected job satisfaction, consistent with other studies targeting PAs and nurses [
16,
44]. In addition to job satisfaction, many studies have revealed that moral distress could directly affect burnout of healthcare workers [
30,
45]. Thus, healthcare professionals’ high moral distress should be managed to improve organizational outcomes.
Many countries have introduced PAs and NPs to solve the shortage problem of physicians. They formally become part of the qualified healthcare team (6, 9). Based on qualification through accredited education, PAs and NPs can provide high-quality of care to patients [
4,
5,
17]. Their performance has been reported by many previous studies [
2,
5,
17]. Unlike countries where PA is officially introduced by the government with proper education, South Korea has many nurses working as PAs without any official recognition or systematic training. To have better outcomes for patients and nurses, we need to discuss the PA system in Korea. Hospitals and nurse managers should establish various strategies to increase job satisfaction of nurses who current perform the role of PA until systems such as practice guideline and training program are established at the government level.
This study has several limitations. Results on the influence derived from this study could not be generalized because this study included nurses working in hospitals with similar characteristics to investigate relationships among work environment, professional identity, moral distress, and job satisfaction. Further research comparing job satisfaction and moral distress according to hospital size and scope of practice is needed. Lastly, caution is needed when generalizing results of this study to other areas because of its limited sample size. A large-scale study is needed to draw definite conclusions.
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