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Catheter treatment is not only effective, but also cost-effective for ischemic stroke

Catheter treatment is not only effective, but also cost-effective for ischemic stroke

29 September 2026

With ischemic stroke, every minute counts. However, many patients do not seek hospital care until it is too late, for example, because symptoms are not immediately recognized or because people wake up with signs of neurological deficits. As a result, a group of patients is no longer eligible for catheter treatment. 

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Platelets: more than a band-aid

Platelets: more than a band-aid

23 September 2026

Some processes in our body might seem obvious to us. If you cut your finger, the bleeding will stop shortly and form a scab. Behind that seemingly simple process hides a sophisticated system of platelets and clotting factors. By now, we know that platelets do much more than halt bleeding: they function as information carriers and regulators of disease processes. 

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Carim Maastricht
Carim Maastricht

Justin Luermans

Assistant Professor

Justin Luermans studied Medicine at Maastricht University, The Netherlands. After obtaining his Medical Degree (cum laude) in 2003 he was trained as a Cardiologist from 2005 until 2011 at the Department of Cardiology, St. Antonius Hospital, Nieuwegein, The Netherlands. He continued his medical career in Nieuwegein by following a fellowship Electrophysiology which he finished in 2013. In 2014 he joined the Cardiology Staff at MUMC+, The Netherlands, as an Electrophysiologist. His professional work focuses on the invasive treatment of cardiac arrhythmias and bradycardias, by means of catheter ablation and cardiac implantable electronic devices. Justin Luermans is director of the Cardiac Catheterization Lab at MUMC+ and also has an affiliation as an Electrophysiologist at the Department of Cardiology of Radboud University Medical Center, Nijmegen, The Netherlands.

In 2010 he obtained his PhD title at Utrecht University: thesis: Paradoxical Embolism, Migraine, and Cardiac Shunt Closure

The research activities of Justin Luermans are mainly focused on atrial fibrillation and cardiac pacing. He has been involved in the steering committee of several trials of the “RACE” concept, which is a series of high-profile large Dutch clinical and translational trials in the field of atrial fibrillation. His main research focus is conduction system pacing, which is an innovative pacing method, by means of pacing the heart’s natural conduction system.

In 2020 he received a “ZonMW doelmatigheidsonderzoek” Research Grant for initiating a large multicenter randomized trial comparing conduction system pacing with traditional right ventricular pacing in patients with a pacing indication because of bradycardia: “The LEAP trial.”

Department of Cardiology
P. Debyelaan 25, 6229 HX Maastricht 
PO Box 5800, 6202 AZ Maastricht
T: +31 (0)43 387 70 95

  • 2026
    • Aerts, L., Norup Hertel, J., Hermans, B. J. M., Luermans, J. G. L., Chaldoupi, S.-M., Lans, R., Saljic, A., Maessen, J. G., Jespersen, T., Linz, D., & Maesen, B. (2026). Analysis of Ablation Curves to Predict Transmural Lesions Using an Epicardial Bipolar Irrigated Radiofrequency Clamp in Pigs and Humans. Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery. Advance online publication. https://doi.org/10.1177/15569845261448874
    • Farnir, F. I. P., Luermans, J. G. L. M., Farnir, F. P. F. J. D. J., Chaldoupi, S. M., & Linz, D. (2026). Impedance drop during focal monopolar pulsed field ablation in the atrium. Journal of Interventional Cardiac Electrophysiology, 69(5), 801-803. https://doi.org/10.1007/s10840-024-01793-z
    • Engels, M. D. E. A., Rippens, M., Hermans, B. J. M., Sandgren, E., Luermans, J., Chaldoupi, S.-M., Hendriks, J. M. L., Lankveld, T., Kessels, M., Vorstermans, B. J. G. H., Beukema, R. J., Vernooy, K., Heesen, W., Hermans, A. N. L., & Linz, D. K. (2026). Smartphone app-based symptom assessment in patients with atrial fibrillation on the waiting list for electrical cardioversion: a TeleConvert-atrial fibrillation sub analysis. EP Europace, 28(8), Article euag201. https://doi.org/10.1093/europace/euag201
    • Rijks, J. H. J., van Koll, J., Burri, H., Curila, K., van Dijk, V. F., Hauer, A., van Opstal, J. M., de Pooter, J., Rademakers, L. M., Timmer, S. A. J., Wieringa, W., Essers, B. A. B., van Kuijk, S. M. J., Brunner-La Rocca, H.-P., Vernooy, K., & Luermans, J. (2026). Permanent LEft ventricular septAl Pacing vs. right ventricular pacing in patients with atrioventricular conduction disorders-a randomized trial: rationale and design of the LEAP trial. European heart journal open, 6(4), Article oeag108. https://doi.org/10.1093/ehjopen/oeag108
    • van Koll, J., Ramalingam, V., Tai, P., Essebag, V., Nguyên, U. C., Opmeer, K. H. M., Lumens, J., Luermans, J. G. L. M., Vernooy, K., & Joza, J. (2026). Identifying Left Ventricular Posterolateral Wall Delay in Right Bundle Branch Block Patients Using Lead V8. JACC: Clinical Electrophysiology, 12(7), 1732-1734. https://doi.org/10.1016/j.jacep.2026.03.009
    • ter Bekke, R., Kaya, Y., Pison, L., Evertz, R., Vernooy, K., Luermans, J., Vroomen, M., Jeurissen, J., Chaldoupi, M., Bidar, E., Lorusso, R., Sauren, B., Lameir, M., & Maesen, B. (2026). Patient-tailored minimally invasive hybrid ablation of complex ventricular tachycardia substrates. JACC: Clinical Electrophysiology, 12(7), 1544-1555. https://doi.org/10.1016/j.jacep.2026.02.031
    • Fotos, G., Ktenopoulos, N., Vlachos, K., Christou, A., Agelaki, M., Apostolos, A., Samaras, A., Luermans, J., Vernooy, K., Tsioufis, K., Toutouzas, K., Linz, D., & Boveda, S. (2026). Conduction system pacing for cardiac resynchronization therapy: a systematic review. EP Europace, 28(6), Article euag122. https://doi.org/10.1093/europace/euag122
    • Aerts, L., Gruwez, H., de Wever, M., Ezzat, D., Heuts, S., Luermans, J. G. L. M., Chaldoupi, S. M., Maessen, J. G., Lorusso, R., Gutermann, H., Pison, L., & Maesen, B. (2026). 1- and 2-stage hybrid atrial fibrillation ablation using a biparietal irrigated radiofrequency clamp: A dual-center cohort analysis. Heart Rhythm O2, 7(6), 1067-1076. https://doi.org/10.1016/j.hroo.2026.03.014
    • Sandgren, E., Betz, K., Gawalko, M., Hermans, A., Habibi, Z., Verhaert, D., Philippens, S., Vorstermans, B., Kessels, M., Bovenkerk, D., Hermans, B. J. M., Hendriks, J. M., den Uijl, D., Chaldoupi, S.-M., Luermans, J., Lankveld, T., Schotten, U., Vernooy, K., & Linz, D. (2026). Symptom severity assessment in patients with atrial fibrillation after catheter ablation using a smartphone application. EP Europace, 28(6), Article euag139. https://doi.org/10.1093/europace/euag139
    • Van Koll, J., Luermans, J. G. L. M., Joza, J., & Vernooy, K. (2026). A case report of functional LV septal pacing. Indian pacing and electrophysiology journal, 26(3), 297-300. https://doi.org/10.1016/j.ipej.2026.03.002
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