Ioanna Koutroulou

Dr. Ioanna Koutroulou

Aristotle University, Thessaloníki, Kentrikí Makedonía, Greece
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 January 2023 in Neurology
Verified
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Thanh N NguyenThanh N Nguyen
Thanh N Nguyen
MQMuhammad M. Qureshi
Muhammad M. Qureshi
PKPiers Klein
Piers Klein
HYHiroshi Yamagami
Hiroshi Yamagami
RMRobert Mikulik
Robert Mikulik
TRthe SVIN COVID-19 Global Stroke Registry
the SVIN COVID-19 Global Stroke Registry
Background and Objectives Declines in stroke admission, IV thrombolysis (IVT), and mechanical thrombectomy volumes were reported during the first wave of the COVID-19 pandemic. There is a paucity of data on the longer-term effect of the pandemic on stroke volumes over the course of a year and through the second wave of the pandemic. We sought to measure the effect of the COVID-19 pandemic on the volumes of stroke admissions, intracranial hemorrhage (ICH), IVT, and mechanical thrombectomy over a 1-year period at the onset of the pandemic (March 1, 2020, to February 28, 2021) compared with the immediately preceding year (March 1, 2019, to February 29, 2020). Methods We conducted a longitudinal retrospective study across 6 continents, 56 countries, and 275 stroke centers. We collected volume data for COVID-19 admissions and 4 stroke metrics: ischemic stroke admissions, ICH admissions, IVT treatments, and mechanical thrombectomy procedures. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases. Results There were 148,895 stroke admissions in the 1 year immediately before compared with 138,453 admissions during the 1-year pandemic, representing a 7% decline (95% CI [95% CI 7.1–6.9]; p < 0.0001). ICH volumes declined from 29,585 to 28,156 (4.8% [5.1–4.6]; p < 0.0001) and IVT volume from 24,584 to 23,077 (6.1% [6.4–5.8]; p < 0.0001). Larger declines were observed at high-volume compared with low-volume centers (all p < 0.0001). There was no significant change in mechanical thrombectomy volumes (0.7% [0.6–0.9]; p = 0.49). Stroke was diagnosed in 1.3% [1.31–1.38] of 406,792 COVID-19 hospitalizations. SARS-CoV-2 infection was present in 2.9% ([2.82–2.97], 5,656/195,539) of all stroke hospitalizations. Discussion There was a global decline and shift to lower-volume centers of stroke admission volumes, ICH volumes, and IVT volumes during the 1st year of the COVID-19 pandemic compared with the prior year. Mechanical thrombectomy volumes were preserved. These results suggest preservation in the stroke care of higher severity of disease through the first pandemic year. Trial Registration Information This study is registered under NCT04934020.

20 October 2022 in Journal of Clinical Medicine
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MAmaria alexandratou
maria alexandratou
APAngeliki Papachristodoulou
Angeliki Papachristodoulou
XLXin Li
Xin Li
SPSasan Partovi
Sasan Partovi
ADAndjoli Davidhi
Andjoli Davidhi
TKTheodoros Karapanayiotides
Theodoros Karapanayiotides
Carotid atherosclerosis is a major cause for stroke, with significant associated disease burden morbidity and mortality in Western societies. Diagnosis, grading and follow-up of carotid atherosclerotic disease relies on imaging, specifically ultrasound (US) as the initial modality of choice. Traditionally, the degree of carotid lumen stenosis was considered the sole risk factor to predict brain ischemia. However, modern research has shown that a variety of other imaging biomarkers, such as plaque echogenicity, surface morphology, intraplaque neovascularization and vasa vasorum contribute to the risk for rupture of carotid atheromas with subsequent cerebrovascular events. Furthermore, the majority of embolic strokes of undetermined origin are probably arteriogenic and are associated with nonstenosing atheromas. Therefore, a state-of-the-art US scan of the carotid arteries should take advantage of recent technical developments and should provide detailed information about potential thrombogenic (/) and emboligenic arterial wall features. This manuscript reviews recent advances in ultrasonographic assessment of vulnerable carotid atherosclerotic plaques and highlights the fields of future development in multiparametric arterial wall imaging, in an attempt to convey the most important take-home messages for clinicians performing carotid ultrasound.

1 January 2021 in Therapeutic Advances in Neurological Disorders
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CKChristos Katsouras
Christos Katsouras
Georgios TsivgoulisGeorgios Tsivgoulis
Georgios Tsivgoulis
Michail PapafaklisMichail Papafaklis
Michail Papafaklis
TKTheodore Karapanayiotides
Theodore Karapanayiotides
DADimitrios Alexopoulos
Dimitrios Alexopoulos
Sotirios GiannopoulosSotirios Giannopoulos
Sotirios Giannopoulos
An alarming cerebro/cardiovascular collateral damage, reflected by a decline in admissions for acute stroke (AS) and acute coronary syndrome (ACS), was observed during the initial phase of the COVID-19 pandemic, thereby leading to a re-design of public campaigns. However, there are limited data regarding the AS and ACS hospitalization rates during the second wave of the pandemic, which was followed by re-imposition of lockdowns. We calculated the rate of AS and ACS hospitalizations from three representative tertiary care hospitals in Greece during a 2-month period (November–December 2020) of the second wave of the COVID-19 pandemic compared with the corresponding control period in 2019 from three representative tertiary care hospitals in Greece. This was a follow-up study with identical design to our previous report evaluating AS and ACS hospitalizations during the first wave of the pandemic (March–April 2020). Compared with 2019, there was a 34% relative reduction of AS hospitalizations [incidence rate ratio (IRR): 0.66, 95% confidence interval (CI): 0.48–0.92, p = 0.013] and 33% relative reduction of ACS hospitalizations (IRR: 0.67, 95% CI: 0.54–0.83, p < 0.001) during the second wave of the COVID-19 pandemic. The relative reduction was smaller and did not reach the level of statistical significance for the respective syndromes (haemorrhagic stroke: IRR 0.87, 95% CI: 0.41–1.82, p = 0.71; ST-elevation myocardial infarction: IRR 0.81, 95% CI: 0.57–1.14, p = 0.22). AS and ACS hospitalizations were persistently reduced during the second wave of the COVID-19 pandemic compared with 2019 in Greece. This decline was similar to the observations during the first wave despite the large differences in the epidemiological COVID-19 burden. Lockdowns, a common characteristic in both waves, appear to have a detrimental indirect impact on cerebro/cardiovascular diseases in the general population.

24 February 2025 in The Egyptian Journal of Neurology, Psychiatry and Neurosurgery
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Journal Article
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MAMARIA AXIOTIDOU
MARIA AXIOTIDOU
IKIoanna Koutroulou
Ioanna Koutroulou
TKTheodoros Karapanayiotides
Theodoros Karapanayiotides
DPDOXA PAPAKONSTANTINOU
DOXA PAPAKONSTANTINOU
Background: Migraine is a prevalent primary headache disorder, affecting approximately 14% of the global population, with the highest burden observed among young women. This scoping review examines the prevalence, triggers, and impact of migraine in university students—a group particularly vulnerable due to academic pressures. By synthesizing existing literature on migraine prevalence, triggers, and effects within this population, the review aims to address research gaps and inform targeted interventions. Methods: We conducted a scoping review to determine the available literature on migraine among university students. An electronic literature search spanning the last decade was performed in accordance with PRISMA guidelines. Results: This review included 41 published manuscripts out of 404 records retrieved after screening titles, abstracts, and texts. The overall prevalence of migraine is increasing, ranging from 9.0% to 27.9%. Behavioral and environmental factors are the primary triggers of migraine attacks, which can compromise academic achievements and contribute to concurrent psychological disorders. Conclusions: Migraine commonly affects university students, with behavioral and environmental factors such as stress, anxiety, and weather changes serving as critical triggers. Migraine significantly impacts the academic performance and health status, highlighting the need for early diagnosis and management.

31 January 2024 in Journal of Clinical Medicine
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Journal Article
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KMKonstantinos Melanis
Konstantinos Melanis
MSMaria Ioanna Stefanou
Maria Ioanna Stefanou
DKDimitrios Kitsos
Dimitrios Kitsos
AAAthanasia Athanasaki
Athanasia Athanasaki
ATAikaterini Theodorou
Aikaterini Theodorou
JTJohn Tzartos
John Tzartos
Background: Paraneoplastic Neurological Syndromes (PNS) comprise a diverse group of disorders propagated by immune-mediated effects of malignant tumors on neural tissue. Methods: A single-center longitudinal study was performed including consecutive adult patients treated at a tertiary academic hospital between 2015 and 2023 and diagnosed with PNS. PNS were ascertained using the 2004 and the revised 2021 PNS-Care diagnostic criteria. Results: Thirteen patients who fulfilled the 2004 definite PNS criteria were included. PNS comprise diverse neurological syndromes, with neuromuscular junction disorders (54%) and limbic encephalitis (31%) being predominant. PNS-related antibodies were detected in 85% of cases, including anti-AChR (n = 4), anti-P/Q-VGCC (n = 3), anti-Hu (n = 3), anti-Yo (n = 1), anti-Ma (n = 1), anti-titin (n = 1), anti-IgLON5 (n = 1), and anti-GAD65 (n = 1). Thymoma (31%), small-cell lung cancer (23%), and papillary thyroid carcinoma (18%) were the most frequent tumors. Imaging abnormalities were evident in 33% of cases. Early immunotherapy within 4-weeks from symptom onset was associated with favorable outcomes. At a mean follow-up of 2 ± 1 years, two patients with anti-Hu and anti-Yo antibodies died (18%). Four and three patients fulfilled the 2021 PNS-Care diagnostic criteria for definite and probable PNS, respectively. Conclusions: This study highlights the clinical heterogeneity of PNS, emphasizing the need for early suspicion and prompt treatment initiation for optimal outcomes.

1 January 2025 in Therapeutic Advances in Neurological Disorders
Verified
Journal Article
Open access
LPLina Palaiodimou
Lina Palaiodimou
NPNikolaos M. Papageorgiou
Nikolaos M. Papageorgiou
EBEleni Bakola
Eleni Bakola
ATAikaterini Theodorou
Aikaterini Theodorou
MRMichele Romoli
Michele Romoli
Georgios TsivgoulisGeorgios Tsivgoulis
Georgios Tsivgoulis
Acute ischemic stroke (AIS) is a leading cause of long-term disability and mortality worldwide, necessitating the rapid implementation of time-sensitive reperfusion therapies to improve outcomes. The “drip and ship” (DS) model, in which intravenous thrombolysis (IVT) is initiated at a primary stroke center (PSC) followed by transfer for endovascular thrombectomy (EVT) at a comprehensive stroke center, is widely adopted, particularly in regions with limited immediate EVT access. This narrative review synthesizes evidence from randomized-controlled clinical trials, large-scale observational registries, meta-analyses, and expert-consensus statements to comprehensively analyze the DS model in AIS management, compare it with the mothership (MS) paradigm, and evaluate current evidence regarding workflow optimization, pharmacologic strategies, and system-level innovations. Evidence comparing DS and MS models highlights the complexity of balancing early IVT with minimizing delays to EVT, with regional factors influencing the optimal approach. Reducing door-in-door-out times is critical within DS pathways, as prolonged interhospital transfer is associated with worse outcomes, emphasizing the need for streamlined protocols, prehospital notification, and telemedicine integration. Bridging therapy with IVT, particularly using tenecteplase, is associated with improved rates of early recanalization, supporting its continued use within DS workflows. Emerging adjunctive therapies offer potential for enhancing arterial recanalization and microcirculatory reperfusion without delaying transfer. The “drive-the-doctor” paradigm, involving the transfer of neurointerventionalists to PSCs, may further reduce onset-to-reperfusion times in geographically challenging settings. Mobile stroke units, equipped with CT imaging and telemedicine capabilities, represent an additional strategy to initiate IVT in the field while expediting triage decisions for EVT. Collectively, these advancements support the continued refinement of the DS model, emphasizing the need for structured system-level improvements to optimize timely reperfusion and functional recovery in AIS patients. Continued research is necessary to further define optimal strategies within the DS framework to ensure equitable and effective stroke care across diverse healthcare environments.