John O. Lopez

ORCID: 0000-0002-9943-3556
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About
Contact & Profiles
Research Areas
  • Cardiac Arrhythmias and Treatments
  • Cardiac electrophysiology and arrhythmias
  • Atrial Fibrillation Management and Outcomes
  • Cardiac pacing and defibrillation studies
  • Radiation Dose and Imaging
  • Diagnosis and Treatment of Venous Diseases
  • Amoebic Infections and Treatments
  • Pancreatitis Pathology and Treatment
  • Digital Radiography and Breast Imaging
  • Reconstructive Surgery and Microvascular Techniques
  • Peripheral Artery Disease Management
  • Phagocytosis and Immune Regulation
  • Genetic and Kidney Cyst Diseases
  • Metastasis and carcinoma case studies
  • Cancer Diagnosis and Treatment
  • Advanced Radiotherapy Techniques
  • Renal cell carcinoma treatment
  • Diagnosis and treatment of tuberculosis

Cleveland Clinic
2014-2025

ABSTRACT Background The use of an automated annotation algorithm based on the maximal negative derivative unipolar potential (−dV/dTmax) for local activation timing in ablation outflow tract (OT) ventricular premature contractions (VPCs) remains controversial. Objective To investigate spatial differences earliest sites (EASs) OT‐VPCs identified by −dV/dTmax versus manual using bipolar potentials. Methods Seventy‐nine patients with frequent who underwent successful were included. VPCs...

10.1111/jce.16647 article EN cc-by Journal of Cardiovascular Electrophysiology 2025-03-23

The objective of this work was to estimate patient doses (dose-area product, organ dose, effective dose and entrance surface dose) for barium procedures. A total 175 procedures, in patients, five different examination categories analysed. Dose-area product determined using a transmission ionization chamber. Organ were assessed knowledge the software. For all contribution fluoroscopy greater than that from radiography. double contrast enema, enteroclysis intestinal tract procedures higher...

10.1259/bjr.73.871.11089468 article EN British Journal of Radiology 2000-07-01

The flexible-tip irrigated ablation catheter Cool Flex™ (St. Jude Medical, St. Paul, MN, USA) was introduced to enhance cooling of the catheter-tissue interface and conform endocardial surface with better contact. Little is known about performance such design compared widely used rigid-tip catheters.In a thigh muscle preparation, using catheters performed in seven pigs across range settings orientation. Postprocedure, stained 2,3,5-triphenyltetrazolium-chloride injected into femoral artery....

10.1111/pace.12676 article EN Pacing and Clinical Electrophysiology 2015-06-19

Abstract Background Activation maps of scar‐related atrial tachycardias (AT) can be challenging to interpret due difficulty in inaccurate annotation electrograms, and an arbitrarily predefined mapping window. A novel software integrating vector data applying algorithmic solution taking into consideration global activation pattern has been recently described (Coherent™, Biosense Webster “Investigational”). Objective We aimed assess the investigational algorithm determine mechanism AT compared...

10.1111/jce.15074 article EN Journal of Cardiovascular Electrophysiology 2021-05-06

Background: Activation maps of scar-related atrial tachycardias (AT) can be challenging to interpret due difficulty in inaccurate annotation electrograms, and an arbitrarily predefined mapping window. A novel software integrating vector data applying algorithmic solution taking into consideration global activation pattern has been recently described (CoherentTM, Biosense Webster "Investigational"). Objective: We aimed assess the investigational algorithm determine mechanism AT compared with...

10.2139/ssrn.3745096 article EN SSRN Electronic Journal 2020-01-01
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