Can cryofreezing energy be an absolute alternative to radiofrequency energy for treating atrioventricular nodal re‐entrant tachycardia? We have to further recognize the advantageous as well as disadvantageous aspects of cryofreezing energy

2021 ◽  
Author(s):  
Kaoru Okishige
Keyword(s):  
Radiofrequency Energy

scholarly journals Analytical solution of one-dimensional Pennes’ bioheat equation

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 1084-1092
Author(s):  
Hongyun Wang ◽  
Wesley A. Burgei ◽  
Hong Zhou
Keyword(s):  
Analytical Solution ◽  
Radiofrequency Energy ◽  
Bioheat Equation ◽  
Surface Cooling ◽  
One Dimensional ◽  
The Fourier Transform ◽  
The One ◽  
Parameter Values ◽  
Mathematical Derivation ◽  
Effect Of Surface

Abstract Pennes’ bioheat equation is the most widely used thermal model for studying heat transfer in biological systems exposed to radiofrequency energy. In their article, “Effect of Surface Cooling and Blood Flow on the Microwave Heating of Tissue,” Foster et al. published an analytical solution to the one-dimensional (1-D) problem, obtained using the Fourier transform. However, their article did not offer any details of the derivation. In this work, we revisit the 1-D problem and provide a comprehensive mathematical derivation of an analytical solution. Our result corrects an error in Foster’s solution which might be a typo in their article. Unlike Foster et al., we integrate the partial differential equation directly. The expression of solution has several apparent singularities for certain parameter values where the physical problem is not expected to be singular. We show that all these singularities are removable, and we derive alternative non-singular formulas. Finally, we extend our analysis to write out an analytical solution of the 1-D bioheat equation for the case of multiple electromagnetic heating pulses.

scholarly journals Use of 3D mapping system for ablating an accessory pathway associated with coronary sinus diverticulum

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Mohammad Paymard ◽  
Marc W. Deyell ◽  
Santabhanu Chakrabarti ◽  
Zachary W. Laksman ◽  
Jacob Larsen ◽  
...  
Keyword(s):  
Coronary Sinus ◽  
Accessory Pathway ◽  
Three Dimensional ◽  
Radiofrequency Energy ◽  
Cardiac Mapping ◽  
Unsuccessful Attempt ◽  
White Syndrome ◽  
Mapping System ◽  
Coronary Sinus Diverticulum ◽  
Wolff Parkinson White Syndrome

Abstract Background This is a rare and challenging case of Wolff–Parkinson–White syndrome due to a posteroseptal accessory pathway located in the coronary sinus diverticulum. It is often difficult to precisely locate this type of accessory pathway, and the ablation procedure could be associated with collateral damage to the neighbouring coronary arteries. Case Presentation The patient was a 49-year-old female with Wolff–Parkinson–White syndrome who was referred for catheter ablation. She had had a previous unsuccessful attempt at ablation and had remained symptomatic despite drug therapy. The pre-procedural cardiac computed tomography scan revealed the presence of a diverticulum in the proximal coronary sinus. Using an advanced three-dimensional cardiac mapping system, the electroanatomic map of the diverticulum was created. The accessory pathway potential was identified within the diverticulum preceding the ventricular insertion. The accessory pathway was then successfully ablated using radiofrequency energy. Conclusion We have demonstrated that the advanced three-dimensional cardiac mapping system plays a very important role in guiding clinicians in order to precisely locate and safely ablate this type of challenging accessory pathway.

Application of Radiofrequency Energy in Surgical and Interventional Procedures:

2004 ◽  
Vol 27 (3) ◽  
pp. 293-298 ◽  
Author(s):  
MICHAEL FIEK ◽  
UWE DORWARTH ◽  
ILKA DURCHLAUB ◽  
SABINE JANKO ◽  
CHRISTIAN VON BARY ◽  
...  
Keyword(s):  
Interventional Procedures ◽  
Radiofrequency Energy

scholarly journals B-PO03-112 ACUTE CHANGE IN PARASYMPATHETIC CARDIAC INNERVATION AFTER PULMONARY VEIN ISOLATION BY PULSE-FIELD AND RADIOFREQUENCY ENERGY

Heart Rhythm ◽  
2021 ◽  
Vol 18 (8) ◽  
pp. S234
Author(s):  
Predrag Stojadinovic ◽  
Dan Wichterle ◽  
Petr Peichl ◽  
Robert Cihak ◽  
Helena Jansova ◽  
...  
Keyword(s):  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Pulse Field ◽  
Radiofrequency Energy ◽  
Cardiac Innervation ◽  
Acute Change

Analysis of radiofrequency energy stored in the altered shapes: Stomatocyte–echinocyte of human erythrocytes

2010 ◽  
Vol 77 (2) ◽  
pp. 158-161 ◽  
Author(s):  
Sagrario Muñoz ◽  
José Luis Sebastián ◽  
Miguel Sancho ◽  
Genoveva Martínez
Keyword(s):  
Human Erythrocytes ◽  
Radiofrequency Energy

scholarly journals Catheter ablation of atrial flutter using radiofrequency energy

1994 ◽  
Vol 73 (5) ◽  
pp. 353-356 ◽  
Author(s):  
Hugh Calkins ◽  
Angel R. Leon ◽  
A.Gregory Deam ◽  
Steven J. Kalbfleisch ◽  
Jonathan J. Langberg ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Atrial Flutter ◽  
Radiofrequency Energy

Ductal closure with radiofrequency energy: the first in-human report

2014 ◽  
Vol 25 (5) ◽  
pp. 999-1001 ◽  
Author(s):  
Mohammad Dalili
Keyword(s):  
Patent Ductus Arteriosus ◽  
Complete Heart Block ◽  
Ductus Arteriosus ◽  
Radiofrequency Energy ◽  
Small Vessels ◽  
Novel Technique ◽  
Congenital Complete Heart Block ◽  
Ductal Closure ◽  
Vascular Obstruction ◽  
Patent Ductus

AbstractBackgroundVascular obstruction is one of the complications of radiofrequency ablation. Following our previous report on the use of radiofrequency energy for vascular closure in an animal model in this journal, we herein present the first ever in-human report.Patient and methodThe patient was a 3-year-old boy, who received a permanent endocardial pacemaker for congenital complete heart block. He also had a conical patent ductus arteriosus. The ductus was occluded with radiofrequency energy on the arterial side with no complications.ConclusionClosure of patent ductus arteriosus and probably other problematic small vessels could be achieved with radiofrequency energy. Further experience will elucidate the future scope of this novel technique.

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