Publications by authors named "Fred Grover"

Background: In patients with end-stage renal disease (ESRD), surgical aortic valve replacement is associated with higher early and late mortality, and adverse outcomes compared with patients without renal disease. Transcatheter aortic valve replacement (TAVR) offers another alternative, but there are limited reported outcomes.

Objectives: The purpose of this study was to determine the outcomes of TAVR in patients with ESRD.

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This study explored the outcome of applying red/near-infrared light therapy using light-emitting diodes (LEDs) pulsed with three different frequencies transcranially to treat traumatic brain injury (TBI) in Veterans. Photobiomodulation therapy (PBMT) using LEDs has been shown to have positive effects on TBI in humans and animal models. Twelve symptomatic military Veterans diagnosed with chronic TBI >18 months post-trauma received pulsed transcranial PBMT (tPBMT) using two neoprene therapy pads containing 220 infrared and 180 red LEDs, generating a power output of 3.

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Objective: This study explored the outcome of applying red/near-infrared light therapy using light-emitting diodes (LEDs) pulsed with three different frequencies transcranially to treat traumatic brain injury (TBI) in Veterans.

Background: Photobiomodulation therapy (PBMT) using LEDs has been shown to have positive effects on TBI in humans and animal models.

Materials And Methods: Twelve symptomatic military Veterans diagnosed with chronic TBI >18 months post-trauma received pulsed transcranial PBMT (tPBMT) using two neoprene therapy pads containing 220 infrared and 180 red LEDs, generating a power output of 3.

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Objectives: The aim of this study was to develop and validate a risk adjustment model for 30-day mortality after transcatheter aortic valve replacement (TAVR) that accounted for both standard clinical factors and pre-procedural health status and frailty.

Background: Assessment of risk for TAVR is important both for patient selection and provider comparisons. Prior efforts for risk adjustment have focused on in-hospital mortality, which is easily obtainable but can be biased because of early discharge of ill patients.

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Background: Recent reports of leaflet abnormalities (detected using advanced imaging) have raised questions regarding transcatheter aortic valve replacement (TAVR) durability. We sought to determine the incidence of valve hemodynamic deterioration (VHD) and its association with cardiovascular outcomes.

Methods And Results: Consecutive cases with paired postimplant and follow-up echocardiograms from November 2011 to March 2015 in the STS/ACC TVT Registry were allocated into 2 overlapping cohorts: early (paired echocardiograms at 0 and 30 days) and late (paired echocardiograms at 30 days and 1 year).

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Objective: Recent investigation suggests that near infrared (NIR) light may improve symptoms from mild traumatic brain injury. In addition, quantitative electroencephalography (qEEG) has shown measures correlating with concussion: P300, reaction time, and amplitude. The objective of this study was to determine whether NIR light treatment has an acute effect on brain state in healthy patients as measured by EEG.

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Importance: Introducing new medical devices into routine practice raises concerns because patients and outcomes may differ from those in randomized trials.

Objective: To update the previous report of 30-day outcomes and present 1-year outcomes following transcatheter aortic valve replacement (TAVR) in the United States.

Design, Setting, And Participants: Data from the Society of Thoracic Surgeons/American College of Cardiology (STS/ACC) Transcatheter Valve Therapies Registry were linked with patient-specific Centers for Medicare & Medicaid Services (CMS) administrative claims data.

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Background: Whether the introduction of transcatheter aortic valve replacement (TAVR) has affected hospitals' surgical aortic valve replacement (SAVR) and overall aortic valve replacement (AVR) case volumes and outcomes in the United States is unknown.

Methods: We utilized data from The Society of Thoracic Surgeons (STS) adult cardiac surgery database and the STS/American College of Cardiology (ACC) transcatheter valve therapies registry to examine SAVR and TAVR procedures. Temporal trends in total case volume (SAVR plus TAVR), and observed and risk-adjusted in-hospital mortality rates were assessed among low-risk cases (STS predicted risk of operative mortality < 4%), intermediate-risk cases (4% to 8%), and high-risk cases (> 8%).

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Importance: Transcatheter aortic valve replacement (TAVR) was approved by the US Food and Drug Administration for the treatment of severe, symptomatic aortic stenosis and inoperable status (in 2011) and high-risk but operable status (starting in 2012). A national registry (the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy [STS/ACC TVT] Registry) was initiated to meet a condition for Medicare coverage and also facilitates outcome assessment and comparison with other trials and international registries.

Objective: To report the initial US commercial experience with TAVR.

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Background: Very elderly patients are increasingly referred for revascularization yet have been underrepresented in both prior percutaneous coronary intervention (PCI) and coronary bypass surgery (CABG) clinical trials. We pooled the largest PCI and CABG clinical registries in the United States to better understand revascularization procedure use, risks and outcomes in patients aged > or =75 years.

Methods: Six PCI registries (n = 48,439) and 8 CABG registries (n = 180,709) voluntarily contributed all procedural data in patients aged > or =75 years from 1990 through 1999.

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Background: There is growing interest in comparing resource, as well as patient outcome metrics among coronary artery bypass graft surgery (CABG) providers, yet few tools exist for adjusting these provider comparisons for patient case-mix. In this study, we aimed to define the magnitude of hospital variability in postoperative length of stay (PLOS) in contemporary practice and to determine the degree to which this variability was accounted for by differences in patient case-mix. We also sought to determine the relationship between hospitals' risk-adjusted PLOS and mortality outcomes.

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Patients are increasingly using the Internet to obtain medical information. Few practice Web sites provide services beyond information about the clinic and common medical diseases. We surveyed computer-using patients at 4 family medicine clinics in Denver, Colorado, by assessing their desire for Internet services from their providers.

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