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Ai AL, Appel HB, Lin CJ. Sex and Psychosocial Differences in Acute Stress Symptoms Prior to Open-Heart Surgery. Int J Behav Med 2024:10.1007/s12529-024-10287-1. [PMID: 38730199 DOI: 10.1007/s12529-024-10287-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Acute stress symptoms can occur while cardiac patients await open-heart surgery (OHS). The distress leads to poor outcomes. This study aimed to investigate the association of sex and psychosocial factors (quality-of-life and character strengths). METHOD Our study cohort included 481 pre-OHS patients (female 42%; mean age 62 years). Medical indices/factors were obtained from the Society of Thoracic Surgeon's national database. Multiple regression analyses were performed following pre-planned steps and adjusting medical factors. RESULTS Our findings revealed that sex differences in trauma-related symptoms were associated with poor mental well-being, alongside comorbidities. Both mental well-being and comorbidity factors were directly related to acute stress symptoms, while dispositional optimism had an inverse association with this outcome. CONCLUSION To improve OHS outcomes, our findings suggest healthcare providers be attentive to pre-OHS acute stress symptoms, pay greater attention to the emotional well-being of their female patients, and develop supportive interventions to enhance personality strengths.
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Affiliation(s)
- Amy L Ai
- Florida State University, College of Social Work, 296 Champions Way, Tallahassee, FL, 32306-2570, USA.
| | - Hoa B Appel
- Florida State University, College of Social Work, 296 Champions Way, Tallahassee, FL, 32306-2570, USA.
- University of Washington Bothell, School of Nursing and Health Studies, 17927 113th Ave NE, Bothell, WA, 98011, USA.
| | - Chyongchiou J Lin
- Florida State University, College of Social Work, 296 Champions Way, Tallahassee, FL, 32306-2570, USA.
- The Ohio State University, College of Nursing, 1577 Neil Avenue, Columbus, OH, 43210, USA.
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Løkhammer S, Koller D, Wendt FR, Choi KW, He J, Friligkou E, Overstreet C, Gelernter J, Hellard SL, Polimanti R. Distinguishing vulnerability and resilience to posttraumatic stress disorder evaluating traumatic experiences, genetic risk and electronic health records. Psychiatry Res 2024; 337:115950. [PMID: 38744179 DOI: 10.1016/j.psychres.2024.115950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/29/2024] [Accepted: 05/04/2024] [Indexed: 05/16/2024]
Abstract
What distinguishes vulnerability and resilience to posttraumatic stress disorder (PTSD) remains unclear. Levering traumatic experiences reporting, genetic data, and electronic health records (EHR), we investigated and predicted the clinical comorbidities (co-phenome) of PTSD vulnerability and resilience in the UK Biobank (UKB) and All of Us Research Program (AoU), respectively. In 60,354 trauma-exposed UKB participants, we defined PTSD vulnerability and resilience considering PTSD symptoms, trauma burden, and polygenic risk scores. EHR-based phenome-wide association studies (PheWAS) were conducted to dissect the co-phenomes of PTSD vulnerability and resilience. Significant diagnostic endpoints were applied as weights, yielding a phenotypic risk score (PheRS) to conduct PheWAS of PTSD vulnerability and resilience PheRS in up to 95,761 AoU participants. EHR-based PheWAS revealed three significant phenotypes positively associated with PTSD vulnerability (top association "Sleep disorders") and five outcomes inversely associated with PTSD resilience (top association "Irritable Bowel Syndrome"). In the AoU cohort, PheRS analysis showed a partial inverse relationship between vulnerability and resilience with distinct comorbid associations. While PheRSvulnerability associations were linked to multiple phenotypes, PheRSresilience showed inverse relationships with eye conditions. Our study unveils phenotypic differences in PTSD vulnerability and resilience, highlighting that these concepts are not simply the absence and presence of PTSD.
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Affiliation(s)
- Solveig Løkhammer
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Department of Clinical Science, University of Bergen, Bergen, Norway; Dr. Einar Martens Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway.
| | - Dora Koller
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Department of Genetics, Microbiology, and Statistics, Faculty of Biology, University of Barcelona, Catalonia, Spain
| | - Frank R Wendt
- Department of Anthropology, University of Toronto, Mississauga, Canada; Biostatistics Division, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Karmel W Choi
- Center for Precision Psychiatry, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA; Psychiatric & Neurodevelopmental Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Jun He
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA
| | - Eleni Friligkou
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA
| | - Cassie Overstreet
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA
| | - Joel Gelernter
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA; Department of Genetics, Yale School of Medicine, New Haven, CT, USA; Department of Neuroscience, Yale School of Medicine, New Haven, CT, USA; Wu Tsai Institute, Yale University, New Haven, CT, USA
| | - Stéphanie Le Hellard
- Department of Clinical Science, University of Bergen, Bergen, Norway; Dr. Einar Martens Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway; Bergen Center of Brain Plasticity, Haukeland University Hospital, Bergen, Norway
| | - Renato Polimanti
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA; Wu Tsai Institute, Yale University, New Haven, CT, USA; Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, CT, USA
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3
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Holman EA, Cramer SC. Lifetime and Acute Stress Predict Functional Outcomes Following Stroke: Findings From the Longitudinal STRONG Study. Stroke 2023; 54:2794-2803. [PMID: 37767737 PMCID: PMC10615770 DOI: 10.1161/strokeaha.123.043356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/03/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Stroke is a sudden-onset, uncontrollable event; stroke-related stress may impede rehabilitation and recovery. Lifetime stress may sensitize patients to experiencing greater stroke-related stress and indirectly affect outcomes. We examine lifetime stress as predictor of poststroke acute stress and examine lifetime and acute stress as predictors of 3- and 12-month functional status. We also compare acute stress and baseline National Institutes of Health Stroke Scale as predictors of poststroke functional status. METHODS Between 2016 and 2020 the STRONG Study (Stroke, Stress, Rehabilitation, and Genetics) enrolled adults with new radiologically confirmed stroke 2 to 10 days poststroke onset at 28 acute care US hospitals. Participants were interviewed 3 times: acute admission (acute stress; Acute Stress Disorder Interview), 3 months (Fugl-Meyer Upper Extremity motor impairment [Fugl-Meyer Upper Arm Assessment; N=431], modified Rankin Scale [3 months; N=542], Stroke Impact Scale-Activities of Daily Living [3 months; N=511], Lifetime Stress Exposure Inventory), and 12 months (modified Rankin Scale, N=533; Stroke Impact Scale 3.0 Activities of Daily Living; N=485; Telephone Montreal Cognitive Assessment; N=484) poststroke. Structural equation models examined whether acute stress predicted 3- and 12-month functional outcomes, and mediated an association between lifetime stress and outcomes controlling for demographics and initial National Institutes of Health Stroke Scale. Standardized betas are reported. RESULTS Sample (N=763) was 19 to 95 years old (mean=63; SD=14.9); 448 (58.7%) were male. Acute stress scores ranged from 0 to 14 (mean, 3.52 [95% CI, 3.31-3.73]). Controlling for age, gender, baseline National Institutes of Health Stroke Scale, and race and ethnicity, higher lifetime stress predicted higher acute stress (β=0.18, P<0.001), which predicted lower 3-month Fugl-Meyer Upper Arm Assessment scores (β=-0.19, P<0.001), lower Stroke Impact Scale 3.0 Activities of Daily Living scores at 3 months (β=-0.21, P<0.001) and 12 months (β=-0.21, P<0.001), higher modified Rankin Scale scores at 3 months (β=0.23, P<0.001) and 12 months (β=0.22, P<0.001), and lower 12-month Telephone Montreal Cognitive Assessment scores (β=-0.20, P<0.001). Acute stress predicted 12-month tMoCA (χ2[1]=5.29, P=0.022) more strongly, 3-month and 12-month modified Rankin Scale and SIS scores as strongly (all Ps>0.18), but Fugl-Meyer scores (χ2[1]=7.01, P=0.008) less strongly than baseline National Institutes of Health Stroke Scale. CONCLUSIONS Lifetime stress/trauma is associated with more poststroke acute stress, which is associated with greater motor and cognitive impairment and disability 3 and 12 months poststroke. Poststroke interventions for acute stress may help mitigate stroke-related disability.
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Affiliation(s)
- E. Alison Holman
- Sue & Bill Gross School of Nursing, Room 4517, Nursing & Health Sciences Hall, University of California, Irvine, CA 92697
- Department of Psychological Science, 4201 Social & Behavioral Sciences Gateway, University of California, Irvine, CA 92697
| | - Steven C. Cramer
- Department of Neurology, University of California, Los Angeles; and California Rehabilitation Institute
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Gillam W, Godbole N, Sangam S, DeTommaso A, Foreman M, Lucke-Wold B. Neurologic Injury-Related Predisposing Factors of Post-Traumatic Stress Disorder: A Critical Examination. Biomedicines 2023; 11:2732. [PMID: 37893106 PMCID: PMC10604790 DOI: 10.3390/biomedicines11102732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/30/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
The present review aimed to identify the means through which neurologic injury can predispose individuals to Post-Traumatic Stress Disorder (PTSD). In recent years, comprehensive studies have helped to clarify which structures in the central nervous system can lead to distinct PTSD symptoms-namely, dissociative reactions or flashbacks-when damaged. Our review narrowed its focus to three common neurologic injuries, traumatic brain injury (TBI), subarachnoid hemorrhage (SAH), and stroke. We found that in each of the three cases, individuals may be at an increased risk of developing PTSD symptoms. Beyond discussing the potential mechanisms by which neurotrauma may lead to PTSD, we summarized our current understanding of the pathophysiology of the disorder and discussed predicted associations between the limbic system and PTSD. In particular, the effect of noradrenergic neuromodulatory signaling on the hypothalamic pituitary adrenal (HPA) axis as it pertains to fear memory recall needs to be further explored to better understand its effects on limbic structures in PTSD patients. At present, altered limbic activity can be found in both neurotrauma and PTSD patients, suggesting a potential causative link. Particularly, changes in the function of the limbic system may be associated with characteristic symptoms of PTSD such as intrusive memories and acute psychological distress. Despite evidence demonstrating the correlation between neurotrauma and PTSD, a lack of PTSD prognosis exists in TBI, SAH, and stroke patients who could benefit from early treatment. It should be noted that PTSD symptoms often compound with pre-existing issues, further deteriorating health outcomes for these patients. It is ultimately our goal to clarify the relationship between neurotrauma and PTSD so that earlier diagnoses and appropriate treatment are observed in clinic.
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Affiliation(s)
- Wiley Gillam
- College of Medicine, University of Florida, Gainesville, FL 32610, USA; (W.G.)
| | - Nikhil Godbole
- School of Medicine, Tulane University, New Orleans, LA 70112, USA;
| | - Shourya Sangam
- College of Liberal Arts and Sciences, University of Florida, Gainesville, FL 32603, USA
| | - Alyssa DeTommaso
- College of Health Professions and Sciences, University of Central Florida, Orlando, FL 32827, USA
| | - Marco Foreman
- College of Medicine, University of Florida, Gainesville, FL 32610, USA; (W.G.)
| | - Brandon Lucke-Wold
- Department of Neurosurgery, University of Florida, Gainesville, FL 32610, USA
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Coping Strategies and Posttraumatic Growth Following Transient Ischemic Attack: A Qualitative Study. J Clin Med 2023; 12:jcm12020575. [PMID: 36675504 PMCID: PMC9863589 DOI: 10.3390/jcm12020575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
A transient ischemic attack (TIA) is defined as a temporary neurological dysfunction due to focal brain ischemia. We aimed to identify common coping strategies and the possible occurrence of posttraumatic growth in TIA patients. Semistructured interviews were conducted with TIA patients three months after TIA. We asked the participants about possible changes in the aftermath of their TIA and their way of coping with said changes. All interviews were tape-recorded and subsequently transcribed verbatim. Thematic content analysis was performed to identify main categories and themes. Seventeen patients with a median age of 66 years completed the semistructured interviews. Qualitative content analysis revealed 332 single codes, from which the three main categories "impairments as a consequence of TIA", "coping strategies" and "posttraumatic growth" were generated. The main categories were further subdivided into seven categories and thirty-six themes. TIA patients may suffer from various physical impairments, which also involve medication side effects. Activating resources on the one hand, and avoiding negative thoughts and feelings on the other hand, were identified to be the relevant coping strategies in TIA patients. Posttraumatic growth seems to be a common phenomenon after TIA, which may have important implications for treatment and rehabilitation.
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Jiang C, Xue G, Yao S, Zhang X, Chen W, Cheng K, Zhang Y, Li Z, Zhao G, Zheng X, Bai H. Psychometric properties of the post-traumatic stress disorder checklist for DSM-5 (PCL-5) in Chinese stroke patients. BMC Psychiatry 2023; 23:16. [PMID: 36624414 PMCID: PMC9830864 DOI: 10.1186/s12888-022-04493-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Stroke is a devastating disease and can be sufficiently traumatic to induce post-traumatic stress disorder (PTSD). Post-stroke PTSD is attracting increasing attention, but there was no study assessing the psychometric properties of the PCL-5 in stroke populations. Our study was conducted to examine the psychometric properties of the PTSD Checklist for DSM-5 (PCL-5) in Chinese stroke patients. METHODS This was a cross-sectional observational study conducted at our hospital. Three hundred and forty-eight Chinese stroke patients came to our hospital for outpatient service were recruited. They were instructed to complete the PCL-5 scales and were interviewed for PTSD diagnosis with the Clinician Administered PTSD Scale for DSM-5 (CAPS-5). The cutoff scores, reliability and validity of the PCL-5 were analyzed. RESULTS PCL-5 scores in our sample were positively skewed, suggesting low levels of PTSD symptoms. The reliability of PCL-5 was good. Exploratory and confirmatory factor analyses indicated acceptable construct validity, and confirmed the multi-dimensionality of the PCL-5. By CFA analysis, the seven-factor hybrid model demonstrated the best model fit. The PCL-5 also showed good convergent validity and discriminant validity. Receiver operating characteristic (ROC) analyses revealed a PCL-5 score of 37 achieved optimal sensitivity and specificity for detecting PTSD. CONCLUSIONS Our findings supported the use of PCL-5 as a psychometrically adequate measure of post-stroke PTSD in the Chinese patients.
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Affiliation(s)
- Che Jiang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Gaici Xue
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Shujing Yao
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Xiwu Zhang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Wei Chen
- grid.263785.d0000 0004 0368 7397School of Psychology, South China Normal University, Guangzhou, 510631 China
| | - Kuihong Cheng
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Yibo Zhang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Zhensheng Li
- Department of Neurology, General Hospital of Southern Theatre Command, Guangzhou, 510010 China
| | - Gang Zhao
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010 China
| | - Xifu Zheng
- grid.263785.d0000 0004 0368 7397School of Psychology, South China Normal University, Guangzhou, 510631 China
| | - Hongmin Bai
- Department of Neurosurgery, General Hospital of Southern Theatre Command, 111 Liuhua Road, Guangzhou, 510010, China.
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Sullivan-Baca E, Modiano YA, McKenney KM, Carlew AR. Pregnancy-related stroke through a neuropsychology lens. Clin Neuropsychol 2022:1-20. [PMID: 36215407 DOI: 10.1080/13854046.2022.2131631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 09/28/2022] [Indexed: 11/03/2022]
Abstract
Objective: Stroke represents a primary cause of morbidity and mortality in pregnant and postpartum people. While pregnancy-related stroke has drawn increased attention in certain domains of health research (e.g. obstetrics, neurology), neuropsychology has yet to contribute to this literature. Given neuropsychologists' crucial role in stroke evaluation and rehabilitation efforts, our field is poised to offer insights into this important topic. Method: This review presents facts about pregnancy-related stroke most relevant for neuropsychologists, including epidemiology, risk factors, and mechanisms, alongside clinical considerations and open areas of inquiry. Structured in the format of a traditional neuropsychological evaluation, we walk readers through factors to consider in record review, the clinical interview, and providing feedback and recommendations. Conclusions: Pregnancy-related stroke can be associated with marked functional disability and decreased quality of life, and it is notable that prevalence rates are increasing. Presenting at a time when people are experiencing adjustment to a new phase of life, and most commonly affecting women of color and other vulnerable populations, pregnancy-related stroke is a unique condition warranting special attention within the broader stroke discourse. This review aims to serve as a starting point for neuropsychologists to better understand the unique attributes of pregnancy-related stroke through a neuropsychology lens. Beyond that, it aims to promote broader meaningful discussion of neuropsychology's role in women's health.
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Affiliation(s)
| | - Yosefa A Modiano
- Vivian L Smith Department of Neurosurgery, UT Health Neurosciences, McGovern Medical School, Houston, TX, USA
| | - Kathryn M McKenney
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Anne R Carlew
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX, USA
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Jiang C, Li Z, Du C, Zhang X, Chen Z, Luo G, Wu X, Wang J, Cai Y, Zhao G, Bai H. Supportive psychological therapy can effectively treat post-stroke post-traumatic stress disorder at the early stage. Front Neurosci 2022; 16:1007571. [PMID: 36278005 PMCID: PMC9583431 DOI: 10.3389/fnins.2022.1007571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/26/2022] [Indexed: 11/25/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) can develop after stroke attacks, and its rate ranges from 4 to 37% in the stroke population. Suffering from PTSD not only decreases stroke patient’s quality of life, but also relates to their non-adherence of treatment. Since strokes often recur and progress, long-term medical management is especially important. However, previous studies generally focused on the epidemiological characteristics of post-stroke PTSD, while there are literally no studies on the psychological intervention. In our study, 170 patients with a first-ever stroke during the acute phase were recruited. They were randomized into Psycho-therapy group 1 and Control group 1, and were administered with preventive intervention for PTSD or routine health education, respectively. At 2-month follow-up, PTSD symptoms were evaluated. Participants who were diagnosed with post-stroke PTSD were further randomized into Psycho-therapy group 2 and Control group 2, and received supportive therapy or routine health counseling, respectively. At 6-month follow-up (1°month after the therapy was completed), PTSD symptoms were re-evaluated. Our results showed that at 2-month, the PTSD incidence in our series was 11.69%, and the severity of stroke was the only risk factor for PTSD development. The preventive intervention was not superior to routine health education for PTSD prevention. At 6-month, results indicated the supportive therapy did have a fine effect in ameliorating symptoms for diagnosed PTSD patients, superior to routine health counseling. Thus, our study was the first to provide evidence that the supportive therapy was effective in treating post-stroke PTSD early after its diagnosis. This clinical trial was preregistered on www.chictr.org.cn (ChiCTR2100048411).
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Affiliation(s)
- Che Jiang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Zhensheng Li
- Department of Neurology, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Chenggang Du
- Department of Health Service, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Xiwu Zhang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Zhuang Chen
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Gaoquan Luo
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Xiaona Wu
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Jiajia Wang
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Yan Cai
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
| | - Gang Zhao
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
- Gang Zhao,
| | - Hongmin Bai
- Department of Neurosurgery, General Hospital of Southern Theatre Command, Guangzhou, China
- *Correspondence: Hongmin Bai,
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