Results 201 to 210 of about 1,216,387 (339)

Effects of cardiac motion on dose distribution during stereotactic arrhythmia radioablation treatment: A simulation and phantom study

Journal of Applied Clinical Medical Physics, Volume 26, Issue 5, May 2025.
Abstract Purpose Cardiac motion may degrade dose distribution during stereotactic arrhythmia radioablation using the CyberKnife system, a robotic radiosurgery system. This study evaluated the dose distribution changes using a self‐made cardiac dynamic platform that mimics cardiac motion. Methods The cardiac dynamic platform was operated with amplitudes
Takayuki Miyachi, Takeshi Kamomae, Fumitaka Kawabata, Kuniyasu Okudaira, Mariko Kawamura, Shunichi Ishihara, Shinji Naganawa   +6 more
wiley   +1 more source

A prospective, randomized evaluation of effect of ventricular fibrillation duration on defibrillation thresholds in humans

, 1989
Gust H. Bardy, Tom D. Ivey, Margaret D. Allen, George Johnson   +3 more
openalex   +1 more source

Huge reduction of defibrillation thresholds using four electrode defibrillators

, 2014
In the absence of a better solution, ventricular fibrillation is treated by applying one or several large electrical shocks to the patient. The question of how to lower the energy required for a successful shock is still a current issue in both fundamental research and clinical practice.
Simic, Ana, Rodríguez Cantalapiedra, Inma, Elorza Barbajero, Jorge, Bragard, Jean   +3 more
openaire   +2 more sources

P21‐Activated Kinase 2 as a Novel Target for Ventricular Tachyarrhythmias Associated with Cardiac Adrenergic Stress and Hypertrophy

Advanced Science, Volume 12, Issue 17, May 8, 2025.
Ca2+/calmodulin‐dependent kinase II (CaMKII) activation is likely driven by oxidative stress, particularly excessive reactive oxygen species (ROS) production. This study identifies P21‐activated kinase 2 (Pak2) as a novel regulator of ROS‐induced CaMKII activation and abnormal Ca2⁺ dynamics in acute adrenergic and chronic pressure‐overload stressed ...
Tao Li, Ting Liu, Yan Wang, Yangpeng Li, Leiying Liu, James Bae, Yu He, Xian Luo, Zhu Liu, Tangting Chen, Xianhong Ou, Dan Zhang, Huan Lan, Juyi Wan, Yan Wei, Fang Zhao, Xin Wang, Tao Li, Christopher L.‐H. Huang, Chunxiang Zhang, Ming Lei, Xiaoqiu Tan   +21 more
wiley   +1 more source

Incidence and 1‐Year Prognostic of Unstable Angina After High‐Sensitivity Troponin Assessment

Catheterization and Cardiovascular Interventions, Volume 105, Issue 6, Page 1445-1452, May 1, 2025.
ABSTRACT Background Incidence and prognostic of unstable angina after high‐sensitivity troponin assesment is controversial. Aims This study evaluated prognostic of a contemporary population of patients with UA defined using high sensitive T troponin (T hs‐cTn) measurements and with significant coronary artery disease (CAD). Methods Consecutive patients
Romain Jouen, Pierre‐Alain Meunier, Lionel Moulis, Francois Roubille, Jean‐Christophe Macia, Jean‐Michel Berdeu, Matthieu Steinecker, Pierre Robert, Benoit Lattuca, Guillaume Cayla, Florence Leclercq   +10 more
wiley   +1 more source

P-491 A novel algorithm for defibrillation threshold assessment using minimal VF inductions [PDF]

, 2003
John Paisey, Teresa Whitman, Arthur Yue, Timothy R. Betts, James M. Morgan, P. Roberts   +5 more
openalex   +1 more source

Sedation, temperature and pressure after cardiac arrest and resuscitation—The STEPCARE trial: A statistical analysis plan

Acta Anaesthesiologica Scandinavica, Volume 69, Issue 5, May 2025.
Abstract Background Basic management for patients who have suffered a cardiac arrest and are admitted to an intensive care unit (ICU) after resuscitation includes setting targets for blood pressure and managing sedation and temperature. However, optimal targets and management are unknown.
C. B. Kamp, J. Dankiewicz, M. Harboe Olsen, J. Holgersson, M. Saxena, P. Young, V. H. Niemelä, J. Hästbacka, H. Levin, G. Lilja, M. Moseby‐Knappe, M. Tiainen, M. Reinikainen, A. Ceric, J. Johnsson, J. Undén, J. Düring, A. Lybeck, D. Rodriguez‐Santos, A. Lundin, J. Kåhlin, J. Grip, E. Lotman, L. Romundstad, P. Seidel, P. Stammet, T. Graf, A. Mengel, C. Leithner, J. Nee, P. Drúwe, K. Ameloot, M. P. Wise, P. J. McGuigan, A. Ratcliffe, J. Cole, J. White, N. Pareek, G. Glover, R. Handslip, A. Proudfoot, M. Thomas, D. Pogson, T. R. Keeble, A. Nichol, M. Haenggi, M. P. Hilty, M. Iten, C. Schrag, M. Nafi, M. Joannidis, C. Robba, T. Pellis, J. Belohlavek, O. Smid, D. Rob, Y. Arabi, S. Buabbas, C. Yew Woon, Q. Li, M. Reade, A. Delaney, B. Venkatesh, N. Hammond, F. Bass, A. Aneman, A. Stewart, L. Navarra, B. Crichton, D. Knight, A. Williams, J. Tirkkonen, T. Oksanen, T. Kaakinen, S. Bendel, H. Friberg, T. Cronberg, M. B. Skrifvars, N. Nielsen, J. C. Jakobsen   +79 more
wiley   +1 more source

Termination of Ventricular Tachycardia with Antitachycardia Pacing after Ineffective Shock Therapy in an ICD Recipient with Hypertrophic Cardiomyopathy

Indian Pacing and Electrophysiology Journal, 2009
Implantable Cardioverter Defibrillator (ICD) implantation is the only established therapy for primary or secondary prevention of sudden cardiac death in patients with Hypertrophic Cardiomyopathy (HCM). Ineffectiveness of shock therapy for the termination
Panagiotis N. Margos, Rolf Schomburg, Jorg Kynast, Ahmed A. Khattab, Gert Richardt   +4 more
doaj  

767-6 Effect of Lead Polarity on the Defibrillation Threshold of Pectorally Implanted Cardioverter Defibrillators

, 1995
Edward T. Keelan, Jasbír Sra, Kathi Axtell, Cheryl Maglio, Vinay K. Bahl, Mohammad R. Jazayeri, Anwer Dhala, Zalmen Blanck, Sanjay Deshpande, Michael Biehl, Masood Akhtar   +10 more
openalex   +1 more source

P-337 The management of chronic ICD defibrillation threshold rise — case report [PDF]

, 2003
Jacek Bednarek, Igor Tomala, Jakub Machejek, Barbara Małecka, Jacek Lelakowski   +4 more
openalex   +1 more source