On December 31, 2019, the municipal health commission of the city of Wuhan (Hubei Province, China) reported the existence of 27 cases of pneumonia of unknown etiology. The onset of symptoms had occurred on December 8, and seven of the cases were severe. At that point, the source of the outbreak was undisclosed. On January 7, 2020, Chinese authorities identified the causal agent as a new RNA virus of the Coronaviridae family, and the condition was therefore named severe acute respiratory syndrome coronavirus 2 (SARS-Cov-2). Since that time, we have learned that transmission occurs through respiration, i.e., the virus is held in droplets of exhaled air that then have direct contact with the conjunctiva and nasal and oral mucosa of nearby people [1,2]. On March 11, 2020, the World Health Organization labeled the situation a global pandemic [3]. In the weeks immediately after that declaration, two countries with a particularly high incidence of cases and mortality were Spain and Italy [4,5]. In both countries, specific regions experienced overwhelming demand on the health care system, far surpassing the capacity of hospitals to attend to all the patients needing medical care [6]. In Spain, furthermore, the health system has decentralized, economic management, so the competence of the human and material resources is the responsibility of each region. Despite the important benefits offered by this type of organization in most situations, it can produce regional differences in management during an emergency situation such as a global pandemic, and those managerial differences can produce different health results [7].

As of July 24, 2020, Spain has reported a total of 272,241 confirmed cases. Of those patients, 126,315 (46.4%) have been hospitalized, and 11,743 have been admitted to an intensive care unit (ICU) (4.3%). Spain has had one of the highest incidences of coronavirus disease 2019 (COVID-19) in the world [6,8]. Nationwide, all regions have been affected by COVID-19 to some extent, and the national health system and its workers have been subjected to a heavier burden than ever before. However, some regions have been more severely affected by COVID-19 than others. Madrid (73,944 cases) and Cataluña (72,919 cases) have had more cases, hospital admissions, and ICU admissions than other regions, at least in part because they contain the two largest cities in Spain: Madrid, the capital of Spain, has a population of 3,334,730 plus a large population in the city’s suburbs, and Barcelona, which has a population of 1,664,182 without counting its suburbs. Their high population density and the agglomerations of people using public transport and those cities’ large leisure and shopping areas facilitated early contagion between individuals and allowed the virus to spread rapidly.

The most acute phase of the pandemic placed a huge strain on healthcare workers (HCWs), which greatly affected both their physical and emotional well-being. Hospital systems ran well above their full capacity, and serious shortages of critical care resources such as ventilators and personal protective equipment (PPE) occurred [9]. The lack of appropriate PPE, including gloves, face shields, gowns, and hand sanitizer, was a particular source of anxiety and stress among frontline HCWs. The lack of essential PPE might also have fed the high rates of infection among professionals seen in both Italy and Spain (although PPE availability was not distributed equally) [10,11]. Thus, resource shortages could have had a role in the development of anxiety, physical fatigue, or difficulties in work performance. A report from China suggests that COVID-19 HCWs are experiencing elevated rates of mental health problems [12].

Different studies have identified fear of contagion (for oneself, children, or family) as another source of stress among the HCWs dealing with this pandemic. That fear can be exacerbated by a reduced availability of PPE, shortages of medical resources in the ICU, and working at full ICU capacity, and it has also been identified as a source of issues such as insomnia, irritability, and decreased appetite [12-15].

Our aim in this study was to describe and compare different regions in Spain (Madrid, Cataluña, and the remaining regions [RRs]) in terms of the work conditions for frontline HCWs that could have acted as stressors during the pandemic. Furthermore, we aimed to describe COVD-19 symptoms experienced by HCWs during the pandemic and compare them among regions. Finally, we analyzed HCWs’ worries about contagion and generalized anxiety symptoms and compared them among regions.

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In this study, we have described the work conditions, physical symptoms resembling COVID-19, and generalized anxiety symptoms of HCWs working in ICUs and compared those results across different regions of Spain. The findings of this study indicate that ICU personnel experienced high levels of anxiety (about 60% of the population had scores meeting a GAD diagnosis) throughout Spanish territory. Regional differences were found in important working conditions, such as the amount of experience professionals had in the ICU, patient to professional ratio during the pandemic, and PPE availability during the study period.

Several studies have highlighted the significant mental-health consequences that this pandemic has had for the HCWs working on its front lines. However, no previous studies have focused on critical care workers. Furthermore, to the best of our knowledge, this is the first study to assess Spanish ICU workers at a moment when the critical situation created by the pandemic was still occurring. Several studies assessed anxiety among COVID-19 workers in China, and they used different tools for their assessments [23]. The estimated prevalence of anxiety in those studies was 23.1%, which is significantly lower than the result we obtained in this study. We found that in the three months following the onset of the pandemic, up to 60% of the HCWs assessed met the criteria for a GAD diagnosis according to the answers they provided to the GAD-7 questionnaire [12,24-26]. The data about anxiety obtained in China were very similar for both HCWs and the general population. In Italy, Rossi et al. [27] found results similar to the Chinese studies regarding the prevalence of anxiety in HCWs (19.80%). In New York state, nurses were more likely than attending physicians and house staff to screen positive for anxiety (40% vs. 15% and 17%, respectively) [28]. In Spain, González-Sanguino et al. [29] used the GAD-2 questionnaire to test the general population and found a prevalence of anxiety that was much lower than what we found in our sample of HCWs (21.6% vs. 58.7%). The variability of those results could reflect the different instruments used and the different moments of measurement. In this context, it should be remembered that we were surveying ICU HCWs in Spain during the most critical months of the pandemic. The higher prevalence of anxiety in our sample could also reflect the fact that the response rate to our survey was highest among professionals working in the regions of Spain most heavily affected by COVID-19, which also saw a higher rate of hospital and ICU admissions than other areas. Although the results presented here are not in accordance with those of previous studies, the high prevalence in anxiety in this sample highlights the devastating effects that the COVID-19 pandemic has had on the psychological health of HCWs [30]. These results show the uncontestable need for a change in health care institutions. A team dedicated to training HCWs in the management of their emotions would be an interesting addition to these environments. Such training would give professionals facing a new pandemic training in emotional control and equip them with the tools and skills they need to face work alterations and thus prevent the development of psychological disorders [31]. In fact, some healthcare systems and professional organizations have already pointed out the need to develop recovery plans to reduce the onset of mental illness and maximize the chance for psychological growth among HCWs [32,33].

Although a worldwide PPE shortage did occur during the present situation, almost half (48%) of the current sample reported inadequate access to it. Furthermore, that perception was unequal among professionals from different regions. Professionals working in Cataluña and the RRs perceived that they had access to enough PPE always or most of the time, but in Madrid, the general perception was of a lack of adequate equipment for self-protection. Despite the benefits of decentralized health care management, some aspects should be regulated by the central government to prevent inequities of access to specific materials such as PPE [34,35]. The decentralized health care system in Spain has already been the subject of different analyses, and the pandemic has revitalized those debates in the scientific and political communities; similar analyses have been conducted in other countries with decentralized health care systems [36].

Regarding social and work-related variables, it should be highlighted that professionals in Madrid had less ICU work experience than HCWs in other regions. Patients admitted to the ICU during the pandemic had elevated care needs, required highly complex procedures and assistance, and would have benefited from the care of highly trained professionals. Several scientific societies have made statements highlighting the importance of being able to access professionals able to adequately work in critical care and effectively manage COVID-19 patients, emphasizing the need to train new specialists to be prepared for future outbreaks [37-39]. Specifically in Spain, registered nurses don’t have a specialty in critical care that is regulated by the Health Ministry, despite demand for one over many years by professionals working in the field, professional societies, and professional colleges. The current pandemic could be an opportunity to finally fully develop that specialty [37]. Moreover, the need to create multidisciplinary teams that can attend to critical care patients in times of crisis is a fact, and the prominent role of anesthesiologists during this pandemic has reinforced their supporting role in critical care facilities [40,41]. On the other hand, it’s interesting to note that most of the HCWs in our sample perceived that their overall workload had been greater than usual, despite the fact that the patient to professional ratio had not increased. Although we don’t have enough information to determine why that discrepancy occurred, we suspect that it reflects the high complexity and care needs of COVID-19 patients and the high proportion of professionals without much experience in managing critical care patients who were asked to work in the ICU during this moment [42]. Further research is necessary to analyze that finding in more depth.

Most of our respondents reported having suffered from some COVID-19-related symptoms during the pandemic. The most frequently reported were unspecific and could be associated with other situations, such as headaches, which were reported by almost 75% of our professional respondents. Headaches could be associated with other situations, such as the high workload, elevated number of work shifts, or the stress derived from taking care of COVID-19 patients. In fact, Ong et al. [43] found that up to 81% of professionals reported suffering headaches or exacerbations of their usual headaches, which could also be related to the continuous use of PPE. Some of the symptoms reported could have derived from being in a lockdown, which was an extra stressor for HCWs. Several studies have highlighted the role of the lockdown in the emergence of unspecific physical symptoms, as well as the appearance of anxiety and stress among the general population; therefore, it cannot be ruled out that something similar could have happened among ICU workers [44-46].

Symptoms specific to COVID-19, such as shortness of breath or fever, appeared at a lower, but still significant, frequency (from 8.9% to 42.2%) in the current sample of ICU workers. These results are similar to those found by Cao et al. [47], who reported that practically all the professionals in their sample suffered from mild body discomfort, including tiredness; sore throat; cough; neck, shoulder and back pain; nausea; and even skin manifestations, although none of those participants were infected by the coronavirus [48].

This study has some limitations, the most important of which could be the non-probabilistic sample selection, which might have caused the overrepresentation of certain regions (mainly Madrid and Cataluña, which were more affected by the pandemic than other areas) and work categories. This is a correlational study and thus cannot establish causality among the results. Furthermore, we could not analyze the relationships between certain variables, such as working conditions and anxiety. However, despite those limitations, this is the first work to assess the effects of work-related variables on HCWs in the Spanish health care system during the COVID-19 pandemic; it provides particularly interesting information about the effects that worries about contagion and anxiety had on respondents.

Due to the magnitude and characteristics of the COVID-19 pandemic, ICU staff have been severely affected both physically and psychologically. In this study, high levels of anxiety were found among HCWs who cared directly for COVID-19 patients. The long-term psychological consequences of those alterations still need to be assessed. As different authors have highlighted, programs to mitigate anxiety among HCWs should be integrated into hospital policies to prepare for future pandemics.

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