Publications

2021

Largent, Emily A, Govind Persad, Michelle M Mello, Danielle M Wenner, Daniel B Kramer, Brownsyne Tucker Edmonds, and Monica Peek. (2021) 2021. “Incorporating Health Equity Into COVID-19 Reopening Plans: Policy Experimentation in California.”. American Journal of Public Health 111 (8): 1481-88. https://doi.org/10.2105/AJPH.2021.306263.

California has focused on health equity in the state's COVID-19 reopening plan. The Blueprint for a Safer Economy assigns each of California's 58 counties into 1 of 4 tiers based on 2 metrics: test positivity rate and adjusted case rate. To advance to the next less-restrictive tier, counties must meet that tier's test positivity and adjusted case rate thresholds. In addition, counties must have a plan for targeted investments within disadvantaged communities, and counties with more than 106 000 residents must meet an equity metric. California's explicit incorporation of health equity into its reopening plan underscores the interrelated fate of its residents during the COVID-19 pandemic and creates incentives for action. This article evaluates the benefits and challenges of this novel health equity focus, and outlines recommendations for other US states to address disparities in their reopening plans.

Fraiche, Ariane M, Daniel D Matlock, Wilanda Gabriel, Faith-Anne Rapley, and Daniel B Kramer. (2021) 2021. “Patient and Provider Perspectives on Remote Monitoring of Pacemakers and Implantable Cardioverter-Defibrillators.”. The American Journal of Cardiology 149: 42-46. https://doi.org/10.1016/j.amjcard.2021.03.023.

The use of remote monitoring technology for cardiovascular electronic implantable devices has grown significantly in recent decades, yet several key questions remain about its integration into clinical care. We performed semi-structured interviews of patients, clinicians, and device clinic technicians involved in clinical remote monitoring of cardiovascular implantable devices at our institution. Twenty-eight interviews comprised of 15 patients and 13 clinicians were conducted from October 2019 through February 2020. Interview transcripts were analyzed using a mixed inductive and deductive approach. Perspectives among clinicians and patients varied regarding familiarity, educational experiences, and preferences regarding how remote monitoring data are handled. Three key domains emerged including knowledge and understanding, managing alerts, and cost transparency. Within these domains, key findings includedvery limited understanding of how remote monitoring functions and how alerts in particular are handled. These knowledge deficits (both patients and providers) appeared to arise in part from different equipment and platforms among manufacturers, the complexity of the technology, and lack of formalized education in remote monitoring. However, interviewees expressed generally high levels of trust in the technology and care systems supporting remote monitoring. Few respondents described concerns around cybersecurity, but patients in particular did raise concerns about cost transparency and frequent billing. In conclusion, conflicting perceptions around remote monitoring persist and indicate important knowledge gaps despite high trust in the care pathway. This qualitative analysis offers insight into patient and clinician understanding of and attitudes toward remote monitoring, and may guide future efforts to improve education and patient-centeredness of remote monitoring.

Palmeri, Nicholas O, Daniel B Kramer, Adolf W Karchmer, and Peter J Zimetbaum. (2021) 2021. “A Review of Cardiac Implantable Electronic Device Infections for the Practicing Electrophysiologist.”. JACC. Clinical Electrophysiology 7 (6): 811-24. https://doi.org/10.1016/j.jacep.2021.03.021.

Cardiovascular implantable electronic device (CIED) infections are morbid, costly, and difficult to manage. This review explores the pathophysiology, diagnosis, and management of CIED infections. Diagnostic accuracy has been improved through increased awareness and improved imaging strategies. Pocket or bloodstream infection with virulent organisms often requires complete system extraction. Emerging prophylactic interventions and novel devices have expanded preventative strategies and options for re-implantation. A clear and nuanced understanding of CIED infection is important to the practicing electrophysiologist.

Strom, Jordan B, Jiaman Xu, Ariela R Orkaby, Changyu Shen, Yang Song, Brian R Charest, Dae H Kim, et al. (2021) 2021. “Role of Frailty in Identifying Benefit From Transcatheter Versus Surgical Aortic Valve Replacement.”. Circulation. Cardiovascular Quality and Outcomes 14 (12): e008566. https://doi.org/10.1161/CIRCOUTCOMES.121.008566.

BACKGROUND: Frailty is associated with a higher risk for adverse outcomes after aortic valve replacement (AVR) for severe aortic valve stenosis, but whether or not frail patients derive differential benefit from transcatheter (TAVR) versus surgical (SAVR) AVR is uncertain.

METHODS: We linked adults ≥65 years old in the US CoreValve HiR trial (High-Risk) or SURTAVI trial (Surgical or Transcatheter Aortic-Valve Replacement in Intermediate-Risk Patients) to Medicare claims, February 2, 2011, to September 30, 2015. Two frailty measures, a deficit-based and phenotype-based frailty index (FI), were generated. The treatment effect of TAVR versus SAVR was evaluated within FI tertiles for the primary end point of death and nondeath secondary outcomes, using multivariable Cox regression.

RESULTS: Of 1442 (linkage rate =60.0%) individuals included, 741 (51.4%) individuals received TAVR and 701 (48.6%) received SAVR (mean age 81.8±6.1 years, 44.0% female). Although 1-year death rates in the highest FI tertiles (deficit-based FI 36.7% and phenotype-based FI 33.8%) were 2- to 3-fold higher than the lowest tertiles (deficit-based FI 13.4%; hazard ratio, 3.02 [95% CI, 2.26-4.02], P<0.001; phenotype-based FI 17.9%; hazard ratio, 2.05 [95% CI, 1.58-2.67], P<0.001), there were no significant differences in the relative or absolute treatment effect of SAVR versus TAVR across FI tertiles for all death, nondeath, and functional outcomes (all interaction P>0.05). Results remained consistent across individual trials, frailty definitions, and when considering the nonlinked trial data.

CONCLUSIONS: Two different frailty indices based on Fried and Rockwood definitions identified individuals at higher risk of death and functional impairment but no differential benefit from TAVR versus SAVR.