Background: Although ablation with focal impulse and rotor modulation (FIRM), as an adjunct to pulmonary vein isolation (PVI), has been shown to decrease atrial fibrillation (AF) recurrence, cost-effectiveness has not been assessed.
Objective: We aimed to evaluate the cost effectiveness of FIRM-guided ablation when added to PVI in a mixed AF population.
Methods And Results: We used a Markov model to estimate the costs, quality-adjusted survival, and cost effectiveness of adding FIRM ablation to PVI. AF recurrence rates were based on 3-year data from the CONFIRM trial. Model inputs for event probabilities and utilities were obtained from literature review. Costs were based on Medicare reimbursement, wholesale acquisition costs, and literature review. Three-year total costs FIRM+PVI versus PVI alone were $27,686 versus $26,924. QALYs were 2.338 versus 2.316, respectively, resulting in an incremental cost-effectiveness ratio (ICER) of $34,452 per QALY gained. Most of the cost (65-81%) was related to the index ablation procedure. Lower AF recurrence generated cost offsets of $4,266, primarily due to a reduced need for medications and repeat ablation. Probabilistic sensitivity analysis demonstrated ICER below $100,000/QALY in 74% of simulations.
Conclusion: Based on data from the CONFIRM study, the addition of FIRM to PVI does have the potential to be cost-effective due to higher quality-adjusted life years and lower follow-up costs. Value is sensitive to the incremental reduction in AF recurrence, and FIRM may have the greatest economic value in patients with greater AF symptom severity. Results from ongoing randomized trials will provide further clarity.
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http://dx.doi.org/10.1111/jce.13449 | DOI Listing |
Neuromodulation
January 2025
Department of Anesthesiology, University of Wisconsin, Madison, WI, USA.
Objectives: Past studies have shown the efficacy of spinal targeted drug delivery (TDD) in pain relief, reduction in opioid use, and cost-effectiveness in long-term management of complex chronic pain. We conducted a survey to determine treatment variables associated with patient satisfaction.
Materials And Methods: Patients in a single pain clinic who were implanted with Medtronic pain pumps to relieve intractable pain were identified from our electronic health record.
BMC Biotechnol
January 2025
School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China.
Background: In this study, thermophilic pectinase-producing strains were isolated. Among all the isolates, strain No. 4 was identified as Aspergillus fumigatus BT-4 based on its morphology and 18 S rDNA analysis.
View Article and Find Full Text PDFBMJ Glob Health
January 2025
School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
Background: The way that healthcare services are organised and delivered (termed 'healthcare delivery arrangements') is a key aspect of a health system. Changing the way health care is delivered, for example, task shifting that delivers the same care at lower cost, may be one way of improving healthcare system sustainability. We synthesised the existing randomised trial evidence to compare the effects of alternative healthcare delivery arrangements versus usual care in Nepal.
View Article and Find Full Text PDFFoot Ankle Surg
December 2024
Dept of Orthopaedics, Kings College Hospital MTC, King's College Hospital NHS Foundation Trust, London, United Kingdom.
Background: Contemporary guidelines advocate for initial debridement and single-stage definitive fixation with immediate soft tissue reconstruction for open fractures. This study aims to evaluate the effectiveness of single-stage stabilization and immediate definitive soft tissue coverage in open ankle fractures compared to closed fractures.
Methods: We compared all isolated open ankle fractures (OF) treated between January 2017 and June 2019 to a control group of operatively managed closed ankle fractures (CF).
ISA Trans
December 2024
Electrical Engineering Department, Faculty of Engineering, Minia University, Minia 61111, Egypt. Electronic address:
The paper presents a new sensor-less voltage and frequency control method for a stand-alone doubly-fed induction generator (DFIG) feeding an isolated load. The proposed control approach directly regulates the magnitude and angle of the rotor-flux vector rather than controlling rotor currents or voltages as in classic field oriented control (FOC). To accurately regulate the magnitude and frequency of stator voltage, two separate closed-loop based PI regulators are employed to evaluate the reference signals of the rotor flux vector magnitude and angle, respectively.
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