Background
Public Health Emergency of International Concern (PHEIC) refers to an exceptional event declared by the World Health Organization that constitutes a public health risk to other countries through the international spread of disease and may require a coordinated international response. It is an event that occurs when a serious, sudden, unusual or unexpected situation occurs whose impact on public health goes beyond the borders of the affected countries and may require immediate international action [
1,
2]. In recent years, with the frequent occurrence of sudden catastrophes around the world, such as COVID-19, Ebola epidemic and WenChuan earthquake, human health and development are facing enormous challenges [
3,
4].
After the outbreak of COVID-19, it spread rapidly to 216 countries until September 9, 2020 [
5]. Subsequently, COVID-19 was decidedly determined as a Public Health Emergency of International Concern (PHEIC) by the WHO on 30 January, 2022 [
6]. The surge in COVID-19 patients in a short period of time requires access to more timely healthcare services, which overwhelms the healthcare system. Countries have taken active actions, such as establishing designated hospitals, temporary hospitals, and temporary treatment centers. These measures have played an important role in strengthening the capacity of the medical system during the COVID-19 pandemic [
7‐
9]. After suffering the epidemic, people have fully realized the importance of medical care services, especially intensive care services, in responding to public health emergencies [
4,
10,
11].
The intensive care unit (ICU) is the last line of defense for human health and plays an extremely important role in responding to public health emergencies and crisis events [
12]. The outbreak of the COVID-19 epidemic has caused tremendous changes in the hospital's space, manpower, and material resources. Many ordinary wards have been converted into temporary ICUs [
7‐
9]. The surge in critically ill patients has brought unprecedented challenges to ICU nurses. On the one hand, the care of critically ill patients includes general and special care, attention to basic needs, and advanced practice in a high-tech environment; on the other hand, ICU nurses need to assume clinical responsibilities, interact with family members, and participate in decision-making [
13,
14]. More importantly, in the face of sudden, high-risk and emergency public health events, patients often fall into a state of anxiety, nervousness and even panic. Nurses are also under tremendous psychological pressure when responding to these emergencies. If this pressure cannot be effectively relieved, its work efficiency and capabilities will be greatly reduced [
15,
16].
Emergency capacity is a subconscious ability of human beings. It refers to the ability of the human brain to deal with something immediately based on past experience and self-thinking when a person encounters something [
17]. The emergency ability of nurses refers to the ability of nurses to observe the changes in the patient's condition in a timely and sensitive manner, make accurate analysis and judgment, master the emergency process, apply skilled skills and techniques, respond calmly, and decisively cooperate with other medical staff in rescue and nursing in clinical nursing practice, especially when facing emergencies [
17]. Furthermore, ICU nurses are crucial to the planning, response, and recovery of public health emergencies, and their experience and ability in caring for critically ill patients are related to their safety, clinical effectiveness, and improved prognosis [
18]. Therefore, emergency ability of ICU nurses will be one of the determinants of addressing public health emergencies.
Previous studies analyzed the working conditions of ICU nurses during the COVID-19 epidemic, revealing the major challenges they face, such as a surge in workload, frequent safety hazards, heavy emotional stress, and significant professional burnout [
19,
20]. At the same time, the study also discovered the positive changes brought about by the epidemic to the nurse group, such as enhancing their resilience and adaptability, improving teamwork effectiveness, and stimulating higher professional enthusiasm and self-improvement awareness [
21]. However, it is worth noting that current research is still insufficient in exploring the actual situation and influencing factors of nurses' emergency abilities in public health emergencies during the COVID-19 epidemic. Although empirical observations from different departments can provide valuable basis for the health system to formulate preventive measures and efficient training programs, aiming to strengthen nurses' emergency abilities, thereby optimizing the quality of care for critically ill patients and improving clinical outcomes, there is still a lack of special surveys on the emergency abilities of ICU nurses, and its guiding significance is self-evident. In view of this, this study explored current status and influencing factors of emergency ability of ICU nurses in public health emergency during COVID-19 and public health crises, which will fill the gap in the study on emergency ability of ICU nurses.
Methods
Study design
This study descriptive cross-sectional survey design.
Participants and setting
This study was carried on in November 8th to15th of 2022 in the city of Beijing, which is the capital of China, and the center of politics, economy and culture. Beijing is one of the cities with the highest level of medical care in China, and thus, future research plays an important role by investigating medical staff in the region. Data were collected from seven Grade-A Tertiary Hospitals in Beijing, China; The tertiary hospital is the abbreviation of the tertiary first-class hospital. It is the highest level in the classification of "three grades and six grades" for hospitals in mainland China. The so-called tertiary hospital refers to the hospitals that have more than 501 beds, perform high-class diagnosis and treatment, complete medical services to the region and surrounding radiation areas, provide senior education and scientific research tasks [
22]. Refer to Price and Tinsley’s sample size calculation method [
23,
24], the quantity of samples is usually more 5 ~ 10 times than those of variables, and 10% of the samples will be dropped when the rate is 5 for the accuracy of the results. So, the minimum required sample size is 389 in this study.
Questionnaire
Basic demographic information included age, gender, job title, educational background, position, work experience, level, nurses were also asked five additional standardized questions whether (1) Participated in public health emergency rescue activities; (2) Participated in public health emergency education; (3) Participated in public health emergency exercises; (4) Cumulative rescue more than 10 times; (5) Willing to participate in rescue.
Public health emergency ability scale
The public health emergency ability scale, which was developed by Zhang et al. [
17,
25]. In China and consist of 37 items scored on a 5-point Likert scale (not well at all = 1, very well = 5) that measure the following seven components of the scale: Emergency knowledge, Rescue ability, Critical Thinking, Communication skill, Organization/coordination ability, Professional ethics, Professional development. The total score of the scale is 37 ~ 185 points, with a score of 149 ~ 185, indicating that the nurse's emergency response ability is very strong; a score of 111 ~ 148, indicating that the nurse's emergency-response ability is at a moderate level; a score of 37 ~ 111, indicating that the emergency response ability of nurses is at a low level. This scale has been used in emergency nurses before and has good reliability and validity. The overall Cronbach’s alpha coefficient of this scale was found to be 0.879, and the Cronbach’s alpha coefficients for the individual dimensions ranged from 0.803 to 0.831 [
17,
25]. In this study, the Cronbach’s alpha coefficients was 0.918.
Simplified coping style questionnaire
The Simplified Coping Style Questionnaire (SCSQ) was used to estimate the individuals’ coping strategies; This questionnaire has been shown to have satisfactory reliability and validity in China, including two dimensions of negative coping and positive coping [
26]. In brief, Item 1 to 12 is used to test individuals' positive coping items, 13 to 20 are used to test the situation of individuals adopting negative coping strategies. The items measure coping style using a four-point Likert scale (0 = never; 1 = occasionally; 2 = sometimes; 3 = frequently). The average score of the active coping dimension and the passive coping dimension were calculated separately. The average score reflects individuals’ coping style preferences, with dimensions with higher scores indicating that individuals are more likely to adopt the relevant coping style.
Data collection
The informed consent was obtained from the nursing department of each hospital when collecting data. Under the coordination of the nursing department and the ICU head nurses of each hospital, the data were collected using the QuestionnaireStar program, Questionnaire Star is a professional online questionnaire survey tool with embedded WeChat program, which has the obvious advantages of being fast, easying to use and low-cost, and has been widely used by a large number of enterprises and individuals in China [
27]. Inclusion criteria: On-the-job registered ICU nurses; Nurses who voluntarily participate with informed consent; Exclusion criteria: nursing students that were on clinical attachment. A total of 486 ICU nurses finished the questionnaire effectively.
Ethics approval
This study was approved by the ethics committee of the Xuanwu Hospital Capital Medical University: 2020–064. The first part of the questionnaire is the informed consent part, in which the research object can clarify the purpose, content and risk of the research and keep the research data confidential. Following the ethical procedure, voluntary participation was emphasized in the information and any decline of participation would not lead to negative consequences. The electronic questionnaire skipped to the content section of the questionnaire only after the researcher had consented. In order to protect the confidentiality of the participants, every single returned questionnaire and each unit was coded with a number. The code lists were stored in one password-locked accounts in which only accessible by the first author.
Data analysis
IBM SPSS 26.0 was used for statistical analysis. Measurement data with normal distribution were described by mean ± standard deviation, and comparison between groups was performed by independent sample t test and analysis of variance. The measurement data that did not meet the normal distribution were described by the median and quartile, and the rank sum test was used for comparison between groups. Count data were described by cases and percentages, and chi-square test was used for comparison between groups. Using multiple linear regression (entry method) to analyze influencing factors of emergency ability (P < 0.05).
Conclusion
Despite the COVID-19 restrictions, the emergency ability of ICU nurses is acceptable, at a medium level. The emergency ability of ICU nurses in public health emergency is influenced by various factors. Work experience, participated in PHE rescue activities, participated in PHE education, cumulative rescue more than 10 times and coping style were the dominant predictors of the emergency abilities. The ICU nurse of seniority, participated in PHE rescue activities, participated in PHE education, cumulative rescue more than 10 times had excellent emergency ability; The importance of positive psychological coping style was also evident, which means that intervention in psychological is seen as necessary.
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