Nicolas Nicolas Martinez-Majander

Dr. Nicolas Nicolas Martinez-Majander


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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1 December 2025 in European Stroke Journal
Verified
Journal Article
Closed access
TSThorsten Steiner
Thorsten Steiner
JPJan Purrucker
Jan Purrucker
DSDiana Aguiar de Sousa
Diana Aguiar de Sousa
TATrine Apostolaki-Hansson
Trine Apostolaki-Hansson
JBJürgen Beck
Jürgen Beck
RSRustam Al-Shahi Salman
Rustam Al-Shahi Salman
Spontaneous (non-traumatic) intracerebral haemorrhage (ICH) affects ~3.4 million people worldwide each year, causing ~2.8 million deaths. Many randomised controlled trials and high-quality observational studies have added to the evidence base for the management of people with ICH since the last European Stroke Organisation (ESO) guidelines for the management of spontaneous ICH were published in 2014, so we updated the ESO guideline. This guideline update was guided by the European Stroke Organisation (ESO) standard operating procedures for guidelines and the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) framework, in collaboration with the European Association of Neurosurgical Societies (EANS). We identified 37 Population, Intervention, Comparator, Outcome (PICO) questions and prioritised clinical outcomes. We conducted systematic literature searches, tailored to each PICO, seeking randomised controlled trials (RCT) – or observational studies when RCTs were not appropriate, or not available – that investigated interventions to improve clinical outcomes. A group of co-authors allocated to each PICO screened titles, abstracts, and full texts and extracted data from included studies. A methodologist conducted study-level meta-analyses and created summaries of findings tables. The same group of co-authors graded the quality of evidence, and drafted recommendations that were reviewed, revised and approved by the entire group. When there was insufficient evidence to make a recommendation, each group of co-authors drafted an expert consensus statement, which was reviewed, revised and voted on by the entire group. The systematic literature search revealed 115,647 articles. We included 208 studies. We found strong evidence for treatment of people with ICH on organised stroke units, and secondary prevention of stroke with blood pressure lowering. We found weak evidence for scores for predicting macrovascular causes underlying ICH; acute blood pressure lowering; open surgery via craniotomy for supratentorial ICH; minimally invasive surgery for supratentorial ICH; decompressive surgery for deep supratentorial ICH; evacuation of cerebellar ICH > 15 mL; external ventricular drainage with intraventricular thrombolysis for intraventricular extension; minimally invasive surgical evacuation of intraventricular blood; intermittent pneumatic compression to prevent proximal deep vein thrombosis; antiplatelet therapy for a licensed indication for secondary prevention; and applying a care bundle. We found strong evidence against anti-inflammatory drug use outside of clinical trials. We found weak evidence against routine use of rFVIIa, platelet transfusions for antiplatelet-associated ICH, general policies that limit treatment within 24 h of ICH onset, temperature and glucose management as single measures (outside of care bundles), prophylactic anti-seizures medicines, and prophylactic use of temperature-lowering measures, prokinetic anti-emetics, and/or antibiotics. New evidence about the management of ICH has emerged since 2014, enabling this update of the ESO guideline to provide new recommendations and consensus statements. Although we made strong recommendations for and against a few interventions, we were only able to make weak recommendations for and against many others, or produce consensus statements where the evidence was insufficient to guide clinical decisions. Although progress has been made, many interventions still require definitive, high-quality evidence, underpinning the need for embedding clinical trials in routine clinical practice for ICH.

13 February 2020 in European Journal of Neurology
Verified
Journal Article
Closed access
PDF file
NMNicolas Nicolas Martinez-Majander
Nicolas Nicolas Martinez-Majander
George NtaiosGeorge Ntaios
George Ntaios
YLYan Yun Liu
Yan Yun Liu
PYPauli Ylikotila
Pauli Ylikotila
HJHeikki Joensuu
Heikki Joensuu
TIthe NAVIGATE ESUS investigators
the NAVIGATE ESUS investigators

7 December 2017 in European Journal of Neurology
Verified
Journal Article
Closed access
PDF file
NMNicolas Nicolas Martinez-Majander
Nicolas Nicolas Martinez-Majander
KAK. Aarnio
K. Aarnio
JPJ. Pirinen
J. Pirinen
TLT. Lumikari
T. Lumikari
TNT. Nieminen
T. Nieminen
JPJ. Putaala
J. Putaala

8 October 2022 in Journal of Stroke and Cerebrovascular Diseases
Verified
Journal Article
Open access
MTMarjaana Tiainen
Marjaana Tiainen
NMNicolas Nicolas Martinez-Majander
Nicolas Nicolas Martinez-Majander
PVPekka Virtanen
Pekka Virtanen
SRSilja Räty
Silja Räty
DSDaniel Strbian
Daniel Strbian
Data concerning the results of endovascular thrombectomy (EVT) in old patients is still limited. We aimed to investigate the outcomes in thrombectomy-treated ischemic stroke patients aged ≥ 80 years, focusing on frailty as a contributing factor. We performed a single-centre retrospective cohort study with 159 consecutive patients aged ≥ 80 years and treated with EVT for acute ischemic stroke between January 1st 2016 and December 31st 2019. Pre-admission frailty was assessed with the Clinical Frailty Scale (CFS). Patients with CFS ≥ 5 were defined as frail. The main outcome was very poor outcome defined as mRS 4-6 at three months after EVT. Secondary outcomes were recanalization status, symptomatic intracerebral haemorrhage (sICH), and one-year survival. Finally, we recorded if the patient returned home within 12 months. Very poor outcome was observed in 57.9% of all patients (52.4% in non-frail and 79.4% in frail patients). Rates of recanalization and sICH were comparable in frail and non-frail patients. Of all patients, 46.5% were able to live at home within 1 year after stroke. One-year survival was 59.1% (65.6% in non-frail and 35.3% in frail patients). In logistic regression analysis higher admission NIHSS, not performing thrombolysis, lack of recanalization and higher frailty status were all independently associated with very poor three-month outcome. Factors associated with one-year mortality were male gender, not performing thrombolysis, sICH, and higher frailty status. Almost 60% of studied patients had very poor outcome. Frailty significantly increases the likelihood of very poor outcome and death after EVT-treated stroke.

1 May 2021 in Stroke
Verified
Journal Article
Closed access
PDF file
VAValerian L. Altersberger
Valerian L. Altersberger
LSLotte J. Stolze
Lotte J. Stolze
Mirjam R HeldnerMirjam R Heldner
Mirjam R Heldner
HHHilde Henon
Hilde Henon
NMNicolas Nicolas Martinez-Majander
Nicolas Nicolas Martinez-Majander
OCOn Behalf Of The Trisp Collaborators
On Behalf Of The Trisp Collaborators
Background and Purpose: Timely reperfusion is an important goal in treatment of eligible patients with acute ischemic stroke. However, during the coronavirus disease 2019 (COVID-19) pandemic, prehospital and in-hospital emergency procedures faced unprecedented challenges, which might have caused a decline in the number of acute reperfusion therapy applied and led to a worsening of key quality measures for this treatment during lockdown. Methods: This prospective multicenter cohort study used data from the TRISP (Thrombolysis in Ischemic Stroke Patients) registry of patients with acute ischemic stroke treated with reperfusion therapies, that is, intravenous thrombolysis or endovascular therapy. We compared prehospital and in-hospital time-based performance measures (stroke-onset-to-admission, admission-to-treatment, admission-to-image, and image-to-treatment time) during the first 6 weeks after announcement of lockdown (lockdown period) with the same period in 2019 (reference period). Secondary outcomes included stroke severity (National Institutes of Health Stroke Scale) after 24 hours and occurrence of symptomatic intracranial hemorrhage (following the ECASS [European-Australasian Acute Stroke Study]-II criteria). Results: Across 20 stroke centers, 540 patients were treated with intravenous thrombolysis/endovascular therapy during lockdown period compared with 578 patients during reference period (−7% [95% CI, 5%–9%]). Performance measures did not change significantly during the lockdown period (2020/2019 minutes median: onset-to-admission 133/145; admission-to-treatment 51/48). Same was true for admission-to-image (20/19) and image-to-treatment (31/30) time in patients with available time of first image (n=871, 77.9%). Median National Institutes of Health Stroke Scale on admission (2020/2019: 11/11) and after 24 hours (2020/2019: 6/5) and percentage of symptomatic intracranial hemorrhage (2020/2019: 6.2/5.7) did not differ significantly between both periods. Conclusions: The COVID-19 pandemic lockdown resulted in a mild decline in the number of patients with stroke treated with acute reperfusion therapies. More importantly, the solid stability of key quality performance measures between the 2020 and 2019 period may indicate resilience of acute stroke care service during the lockdown, at least in well-established European stroke centers.

28 May 2024 in Neurology
Verified
Journal Article
Closed access
Thanh N NguyenThanh N Nguyen
Thanh N Nguyen
RNRaul G. Nogueira
Raul G. Nogueira
MQMuhammad M. Qureshi
Muhammad M. Qureshi
SNSimon Nagel
Simon Nagel
JRJean Raymond
Jean Raymond
SOSantiago Ortega-Gutierrez
Santiago Ortega-Gutierrez
Background and ObjectivesThere is uncertainty whether patients with large vessel occlusion (LVO) presenting in the late 6-hour to 24-hour time window can be selected for endovascular therapy (EVT) by noncontrast CT (NCCT) and CT angiography (CTA) for LVO ...