1. Background
Stroke involves a transient or permanent interruption of cerebral blood flow, depriving neurons of oxygen and glucose essential for their function. This leads to neuronal death and significant physical, cognitive, and emotional sequelae. Based on the mechanism of vascular disruption, stroke is classified into two main types: ischemic (approximately 80% of cases) and hemorrhagic [
1,
2].
Ischemic stroke results from the obstruction of a cerebral artery, commonly due to thrombi or emboli formation. This type of stroke may present as a transient ischemic attack (TIA), lasting less than 24 hours, or as a cerebral infarction, which exceeds this duration. The primary symptoms include localized muscle weakness, speech difficulties, sensory loss, and visual disturbances, which may manifest as diplopia or sudden, severe headaches. These symptoms, along with the severity of the sequelae, make stroke one of the leading causes of disability and mortality worldwide [
1,
2,
3].
Stroke ranks among the leading causes of global disability, with annual figures surpassing those of other major neurological conditions. According to the World Health Organization (WHO), more than 12 million new cases of stroke occur worldwide each year. It ranks as the third leading cause of mortality, the primary cause of disability, and the second leading cause of dementia among adults in developed countries [
4,
5,
6].
In Spain, stroke causes approximately 40,000 deaths annually, and it is estimated that a new case occurs every six minutes. Furthermore, two out of every three survivors experience some form of disabling sequela, and only 40% achieve full autonomy recovery. These statistics emphasize the urgency of developing robust prevention, acute care, and recovery protocols to mitigate stroke-related morbidity and mortality [
1,
3,
6].
Stroke incidence increases with age, doubling every decade after 55 years and tripling in individuals over 80 years old. While men show a higher prevalence of ischemic stroke, women experience more disabling sequelae and higher mortality rates, highlighting sex-specific healthcare needs. Major risk factors include metabolic conditions (diabetes mellitus, obesity, dyslipidemia), arterial hypertension (present in 70% of cases), sedentary lifestyle, and substance use such as tobacco and alcohol [
1,
2,
3].
Stroke poses a substantial economic burden, accounting for 2% to 4% of total healthcare expenditure in industrialized countries, a figure comparable to other major chronic conditions such as cardiovascular disease. In Spain, direct treatment costs during the first three months reach approximately €4,000 per person, while indirect costs, driven by long-term disability and cognitive impairments, have a greater economic impact, reducing quality of life and productivity [
3,
5].
Intravenous thrombolysis with tissue plasminogen activator (rt-PA) and mechanical thrombectomy are two key interventions for ischemic stroke treatment, both effective in arterial recanalization and reducing long-term sequelae. The efficacy of rt-PA is highly time-sensitive, with optimal results achieved within the first 4.5 hours after symptom onset, highlighting the need for rapid diagnosis and intervention. Mechanical thrombectomy has emerged as a critical option for people ineligible for thrombolysis or those unresponsive to thrombolytic therapy, significantly improving recanalization rates and outcomes. Together, these interventions have transformed the landscape of acute ischemic stroke care, offering improved survival and reduced disability [
5,
6,
7,
8,
9].
Despite advances in acute stroke management, post-stroke complications such as cognitive impairment and depression remain significant challenges due to their complex etiology and variability in recovery trajectories. Vascular cognitive impairment affects up to 60% of people with stroke within the first year after stroke, with one-third progressing to long-term dementia, underscoring its clinical significance. These complications not only elevate healthcare costs but also increase caregiver burden, particularly in regions with limited access to rehabilitation services. Post-stroke depression, affecting approximately one-third of survivors, is associated with poorer rehabilitation adherence, reduced quality of life, heightened recurrence risk, and increased mortality rates. Addressing cognitive, emotional, and functional impairments is vital for achieving holistic post-stroke recovery and improving people outcomes [
10,
11,
12,
13,
14].
Historically, stroke management has focused on sensory-motor sequelae, often neglecting neuropsychiatric complications such as cognitive impairment and depression. Cognitive impairment occurs in up to 30% of people during the acute phase, with prevalence varying across cohorts and stroke subtypes. Depression significantly impairs functional recovery by reducing person motivation and adherence to rehabilitation programs. Both cognitive impairment and depression profoundly affect autonomy, rehabilitation motivation, and quality of life, reinforcing the need for a multidimensional approach to post-stroke care. These impairments delay functional recovery and diminish the likelihood of achieving full independence, particularly among older people with limited resilience [
10,
11].
To address these needs, the Lugo, A Mariña, and Monforte de Lemos Health Area, in collaboration with the Investén group from the Carlos III Health Institute, implemented the Registered Nurses' Association of Ontario (RNAO) best practice guideline for stroke management in 2018. This guideline includes evidence-based recommendations for the functional, cognitive, and emotional assessment of post-stroke people. Since 2024, targeted strategies for screening cognitive status and depressive symptoms have been introduced at the Lucus Augusti University Hospital (HULA), aiming to enhance care and rehabilitation protocols [
15].
The main objective is to analyze cognitive status, functionality, and depressive symptoms in people with ischemic stroke or TIA treated at HULA. The specific objectives are: (1) To determine the level of cognitive status, functional dependency, and depressive symptoms, (2) To correlate cognitive status with depressive symptoms and functionality, (3) To relate depressive symptoms to cognitive status and functionality, and (4) To correlate functionality with cognitive status.
2. Methods
Design
Analytical, observational, exposure-based, cohort, and prospective study.
Population
For the development of this study, the target population selected consists of people with a clinical diagnosis of ischemic stroke or TIA in the Lugo, A Mariña, and Monforte de Lemos health area.
Sample
This study included people diagnosed with ischemic stroke or TIA treated in the Neurology ward at HULA. Inclusion criteria comprised anterior or posterior cerebral occlusion and age ≥ 18 years, while exclusion criteria included intracranial hemorrhage, pregnancy, and cognitive dysfunction that impeded participation.
The Stroke Atlas of Galicia (2018) reported a regional population of 2,701,819 inhabitants. Based on the incidence rate from the IBERICTUS study (187.4 cases per 100,000 inhabitants), approximately 5,064 new stroke cases occur annually in Galicia. In Lugo province, with 327,946 inhabitants, this incidence corresponds to roughly 614 cases per year, of which 80% (≈492) are ischemic strokes [
1,
6].
A minimum sample size of 97 subjects was calculated to ensure representativeness of the stroke population in Lugo province. This estimation, based on a 95% confidence interval and a 9% margin of error, guarantees sufficient statistical precision for analyzing cognitive, functional, and emotional outcomes [
16].
Variables
Independent
Sociodemographic: Age (<65 years, 65-80 years, >80 years), Sex (male, female), Date of ischemic event (mm/yyyy).
Clinical: Type of stroke (ischemic, TIA), Treatment modality (received rt-PA, received mechanical thrombectomy, or did not receive antithrombotic treatment), Number of falls, Pain level, Presence of pressure ulcers (PU), Presence of aspiration pneumonia, Vital signs (temperature, blood pressure, and blood glucose levels).
Dependent
Dependent variables were neurological and Cognitive status, Depression symptomatology and functional independence.
Instruments
National Institutes Health Stroke Scale
The NIHSS scale, developed in 1989, is a widely used tool for assessing stroke severity and its neurological effects, both during the initial evaluation of the person and throughout their follow-up. It consists of 11 items that evaluate aspects such as level of consciousness, language, vision, and sensory-motor impairment, assigning scores based on the degree of dysfunction.
The total score was calculated by summing the individual scores of each item, with a range from 0 (normal function) to 42 (maximum impairment). Based on the scale's categorization, people were classified as asymptomatic (0 points), minimal deficit (1 point), mild deficit (2-5 points), moderate deficit (6-15 points), significant deficit (16-20 points), or severe deficit (>20 points) [
5].
Beck Depression Inventory (BDI)
The BDI, originally published by Beck et al. in 1996 and later adapted for use in Spain, is a tool designed to assess the severity of depressive symptoms. It consists of 21 items that explore symptoms experienced in the past few weeks, assigning scores from 0 to 3, where 0 indicates lower severity and 3 indicates higher severity.
The total score ranges from 0 to 63, with 14 points as the threshold for considering clinically significant depression. The application of this scale requires approximately 10 minutes. Based on the total score, symptoms are classified into four categories: no depression (0-13 points), mild depression (14-19 points), moderate depression (20-28 points), and severe depression (29-63 points) [
17,
18].
Mini-Mental State Examination
The Mini-Mental State Examination, developed by Marshal Folstein in 1975 and adapted to the Spanish version in 1979 by Lobo as the Mini-Cognitive Examination (MEC), is a tool used to assess cognitive impairment, facilitating the detection of disorders such as dementia. The test covers various areas: temporal and spatial orientation, immediate memory, calculation and concentration, delayed memory, language (naming, repetition, comprehension, reading, and writing), and graphic constructive praxis.
The maximum score is 30 points, indicating the absence of cognitive impairment, while a score below 23 points suggests cognitive deterioration. The test takes approximately 5 minutes to administrate. The scoring categories are: No cognitive impairment (30-27 points); Doubtful cognitive status (26-25 points); Mild-to-moderate cognitive impairment (24-10 points); Moderate-to-severe cognitive impairment (9-6 points), and Severe cognitive impairment (<6 points) [
19].
Barthel Index
The Barthel Index, also referred to as the Maryland Disability Index, was developed in 1965 by Mahoney and Barthel and is one of the most widely used tools for assessing the functional capacity of people. This scale evaluates independence in basic activities of daily living (BADLs), categorizing the level of dependency based on the person’s degree of autonomy. The instrument assesses 10 BADLs, divided into two categories: seven related to personal care (eating, bathing, dressing, grooming, bowel control, bladder control, and toilet use) and three associated with mobility (walking, transferring, and climbing/descending stairs).
Each activity is scored according to the level of independence, with values ranging from 0 (total dependence) to 15 (total independence). The total score ranges from 0 to 100, where 100 points indicate complete independence and 0 absolute dependence. Based on the score obtained, the level of dependency is classified as follows: 100 points for independence, ≤60 for mild dependence, 40-55 for moderate dependence, 20-35 for severe dependence, and 5-20 for total dependence [
20,
21].
Data Management
The data collected for this research were completed by the principal investigator and were only accessible to them and the project's collaborative team. No external individuals had the ability to modify the data. The data were gathered at three specific time points: upon subject admission (neurological evaluation using the NIHSS), at discharge from the Neurology Unit, and during the follow-up consultation at three months.
For the evaluations at discharge and three months, the MEC was used to assess cognitive status, the Barthel Index to evaluate functionality, and the BDI to assess depressive symptoms. These scales were administered by trained nurses, and the data were recorded in a collection notebook specifically designed for this study. The information was stored anonymously and reviewed to ensure its quality and consistency.
Confidentiality of Data and Ethical Considerations
This study received ethical approval from the Santiago-Lugo Ethics Committee (Registration Code: 2024-472) in February 2025. The study strictly adhered to the ethical principles outlined in the Declaration of Helsinki and complied with RD 1090/2015 regulations governing clinical trials in Spain, ensuring the protection of participants' rights and well-being
Strict measures of anonymization and dissociation were implemented to ensure compliance with relevant data protection laws, including the Spanish Organic Law 3/2018 and associated regulations. Clinical data were recorded in coded case report forms (CRFs), accessible only to the research team and health authorities under confidentiality obligations. Data shared externally were anonymized, and informed consent was obtained from all participants.
The database was fully anonymized, and data will be destroyed or retained in an anonymized form upon study completion, as stipulated in the consent form. Data processing remains under HULA's responsibility.
Data Analysis
A descriptive analysis was performed for quantitative variables using measures of central tendency, such as the mean (M), and dispersion, such as the standard deviation (SD). For qualitative variables, absolute frequencies and percentages were calculated. The Chi-square test was applied to assess relationships between qualitative variables.
The normality of quantitative variables was evaluated using the Kolmogorov-Smirnov test, revealing a non-parametric distribution for all variables. Consequently, the Kruskal-Wallis test was employed for comparisons across more than two groups, while pairwise differences were analyzed using the U Mann-Whitney test. The strength and direction of associations were assessed using Spearman's correlation coefficient.
All statistical analyses were conducted using PASW Statistics software (version 23.0; SPSS Inc., Chicago, Illinois), with a bilateral significance level set at p<0.05.
4. Discussion
This study uniquely contributes to the literature by including people with TIA alongside those with ischemic stroke, allowing for a broader understanding of recovery patterns. Additionally, the integration of cognitive, functional, and emotional assessments provides a comprehensive view of person outcomes, highlighting the importance of multidimensional approaches in stroke care [
22].
The sample in this study included 99 subjects, of whom 81.8% presented with ischemic stroke. The results showed that initial clinical severity, measured by the NIHSS, was significantly higher in people with ischemic stroke compared to TIA, confirming its utility in discriminating stroke subtypes. Although functional differences, assessed using the Barthel Index, tend to diminish over time, significantly lower functional and cognitive recovery was observed in older people, reflected in lower scores on both the Barthel Index and the MEC [
23,
24].
The average age was 72.43±11.72 years, and many participants were men (65.7%). When comparing these demographic characteristics with previous research, relevant differences were identified. Recent studies emphasize that demographic factors such as age and sex significantly influence recovery trajectories, with older people and men often exhibiting slower functional recovery due to higher prevalence of comorbidities and vascular risk factors [
25].
The study by Pego Pérez et al. [
26] analyzed a larger sample of 674 subjects, with a higher mean age (73.99±11.69 years) and a lower percentage of men (57%). In contrast, Sánchez Silverio et al. [
27] reported a mean age of 56.6±12.6 years, but with a gender distribution of 46.8% women vs. 53.2% men (n=62). These comparisons highlight the variability in demographic characteristics across studies, underscoring the importance of the population context in interpreting results.
Additionally, global differences between men and women were identified, although no individual variables, such as NIHSS or Barthel, showed statistical significance. This may reflect underlying biological or social factors. People undergoing mechanical thrombectomy exhibited a higher risk of developing depressive symptoms, which may be partially attributed to the psychological impact of being transferred to specialized centers in Coruña or Santiago de Compostela. The necessity of relocation to another province could exacerbate emotional distress, as it disrupts social support systems and heightens feelings of vulnerability during the acute phase of care.
Cognitive status in this study was assessed three different times. Initially, upon hospital admission, the mean score was 2.72±3.56 points, indicating mild cognitive impairment. Comparing these findings with other studies reveals notable variability in results. Recent guidelines emphasize the importance of combining neuroimaging techniques with standardized cognitive assessments to improve early detection and intervention strategies for cognitive impairment post-stroke [
28]. Bermello López et al. [
6] reported a mean score of 12.1±7.3 points, reflecting moderate impairment, while Pego Pérez et al. [
29] recorded a mean of 16.2±7.4 points, corresponding to significant impairment. In subsequent evaluations conducted at discharge and during follow-up consultations using the MEC, the mean scores were 25.38±4.57 and 27.03±4.02 points, respectively, indicating a questionable cognitive status or absence of impairment. Similar results were observed in the study by Sánchez Silverio et al. [
27], with a mean of 24.9±4.1 points, also reflecting a questionable cognitive status. These findings emphasize the diversity in results depending on the context and the tools used for cognitive assessment.
This study identified a correlation between person’ cognitive status at admission and their subsequent functionality, observing that greater cognitive impairment at admission is associated with poorer functional prognosis. Similar results were reported by Bermello López et al. [
6], who concluded that the NIHSS scale is a good predictor of functionality three months after stroke. These findings suggest that cognitive impairment may hinder recovery by limiting people ability to engage in rehabilitation programs or adapt to functional challenges. Early cognitive screening and targeted interventions could enhance rehabilitation outcomes and mitigate long-term disability.
Additionally, a relationship was found between initial cognitive status at discharge and the emergence of subsequent depressive symptoms. Specifically, greater cognitive impairment at admission was associated with more pronounced depressive symptoms in later stages. Carnés-Vendrell et al. [
30] also addressed this connection, noting that the relationship between post-stroke cognitive impairment and post-stroke depression is controversial and appears to be bidirectional: greater cognitive impairment increases the risk of depression, but likewise, greater depression heightens the risk of cognitive impairment. These findings underscore the importance of integrated approaches that address both cognitive and emotional health in stroke people, as targeting one domain may indirectly benefit the other.
The variability in results across studies may be influenced by differences in sample characteristics, such as age distribution, stroke severity, and inclusion criteria. Additionally, cultural and healthcare system differences could play a role in shaping recovery trajectories and person outcomes. Standardizing methodologies and expanding cross-cultural research are essential to address these discrepancies [
25].
In terms of functionality, a mean score of 91.92±15.60 was obtained at discharge and 92.17±15.67 during follow-up (independence/mild dependence). The delta of 0.25 reflected a slight but significant improvement in the functionality of stroke people, particularly those with low scores at discharge, enabling them to perform basic activities that impact their independence and quality of life. This change, consistent with previous studies, highlights the importance of early and continuous interventions that integrate physical, emotional, and cognitive aspects to maximize recovery. Furthermore, it underscores the need to establish realistic goals, as even modest progress can be crucial for person adaptation and autonomy.
When compared with other studies, some differences in dependency levels were identified. In the study by Pego Pérez et al. [
29], the mean score was 78.84±24.42 points, indicating a slightly higher level of dependency than observed in this study (mild dependency). Similarly, Sánchez Silverio et al. [
27] reported a mean score of 78.1±14 points, also corresponding to mild dependency. These discrepancies could be explained by differences in sample composition, as previous studies included only people with ischemic stroke, whereas this study also included individuals who had suffered TIA.
Regarding depressive symptoms, the results of this study showed a mean score of 9.05±8.56 points at discharge and 8.27±7.56 points during the follow-up consultation, both corresponding to a minimal level of depression. Similarly, the study by Geun-Young Park et al. [
10] reported a mean score of 12.9±11.1 points. Also, the BDI scores were low, which could be explained by the early timing of the evaluations, conducted during the acute or subacute phases. This finding aligns with the literature, which indicates that post-stroke depressive symptoms tend to develop or become more apparent several months after the initial event [
10].
The results reflect a general trend toward improvement in depressive symptoms after hospital discharge, with most people classified under the minimal depression category. However, the persistence of symptoms such as loss of libido, mood, and changes in sleep patterns in higher categories highlight areas that may require specific interventions. Additionally, the increase in mild and moderate depression categories for certain items during the follow-up consultation suggests that some emotional and physical aspects were not fully resolved with initial treatment. These findings emphasize the need for personalized therapeutic strategies and closer monitoring to ensure comprehensive recovery.
The findings underscored the need for a multidimensional approach in the evaluation and follow-up of people with stroke. Current evidence-based guidelines advocate multidisciplinary teams to address neurological, functional, and emotional dimensions simultaneously, ensuring comprehensive care and minimizing disparities in treatment outcomes [
22].
The Registered Nurses' Association of Ontario stands out for its leadership in creating guidelines aimed at fostering a comprehensive approach to person care, with the goal of minimizing disparities in treatment and optimizing health outcomes. These guidelines, developed, reviewed, and periodically updated, serve as essential resources for standardizing and improving person care after a stroke. Additionally, the adoption of these care standards would significantly contribute to the more efficient management of available healthcare resources [
12,
15].
It is crucial to advance toward the standardization of care through the progressive integration of recommendations based on nursing best practice guidelines. This would enable the evaluation of the impact of nursing care and interventions on stroke person recovery, adopting a holistic approach that prioritizes health education. Moreover, expanding data collection and extending follow-up periods is necessary, as most current studies focus predominantly on acute and subacute phases, often overlooking the stabilization stage of the disease.