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Dr. John  Wheeler  Md image

Dr. John Wheeler Md

3115 Sw 89Th St
Oklahoma City OK 73159
405 245-5630
Medical School: Other - Unknown
Accepts Medicare: No
Participates In eRX: No
Participates In PQRS: No
Participates In EHR: No
License #: 29077
NPI: 1073700928
Taxonomy Codes:
207X00000X

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Publications

Capital Investment by Independent and System-Affiliated Hospitals. - Inquiry : a journal of medical care organization, provision and financing
Capital expenditures are a critical part of hospitals' efforts to maintain quality of patient care and financial stability. Over the past 20 years, finding capital to fund these expenditures has become increasingly challenging for hospitals, particularly independent hospitals. Independent hospitals struggling to find ways to fund necessary capital investment are often advised that their best strategy is to join a multi-hospital system. There is scant empirical evidence to support the idea that system membership improves independent hospitals' ability to make capital expenditures. Using data from the American Hospital Association and Medicare Cost Reports, we use difference-in-difference methods to examine changes in capital expenditures for independent hospitals that joined multi-hospital systems between 1997 and 2008. We find that in the first 5 years after acquisition, capital expenditures increase by an average of almost $16 000 per bed annually, as compared with non-acquired hospitals. In later years, the difference in capital expenditure is smaller and not statistically significant. Our results do not suggest that increases in capital expenditures vary by asset age or the size of the acquiring system.© The Author(s) 2015.
Ten-atom silver cluster signaling and tempering DNA hybridization. - Analytical chemistry
Silver clusters with ∼10 atoms are molecules, and specific species develop within DNA strands. These molecular metals have sparsely organized electronic states with distinctive visible and near-infrared spectra that vary with cluster size, oxidation, and shape. These small molecules also act as DNA adducts and coordinate with their DNA hosts. We investigated these characteristics using a specific cluster-DNA conjugate with the goal of developing a sensitive and selective biosensor. The silver cluster has a single violet absorption band (λ(max) = 400 nm), and its single-stranded DNA host has two domains that stabilize this cluster and hybridize with target oligonucleotides. These target analytes transform the weakly emissive violet cluster to a new chromophore with blue-green absorption (λ(max) = 490 nm) and strong green emission (λ(max) = 550 nm). Our studies consider the synthesis, cluster size, and DNA structure of the precursor violet cluster-DNA complex. This species preferentially forms with relatively low amounts of Ag(+), high concentrations of the oxidizing agent O2, and DNA strands with ≳20 nucleotides. The resulting aqueous and gaseous forms of this chromophore have 10 silvers that coalesce into a single cluster. This molecule is not only a chromophore but also an adduct that coordinates multiple nucleobases. Large-scale DNA conformational changes are manifested in a 20% smaller hydrodynamic radius and disrupted nucleobase stacking. Multidentate coordination also stabilizes the single-stranded DNA and thereby inhibits hybridization with target complements. These observations suggest that the silver cluster-DNA conjugate acts like a molecular beacon but is distinguished because the cluster chromophore not only sensitively signals target analytes but also stringently discriminates against analogous competing analytes.
Physician-patient communication on cost and affordability in asthma care. Who wants to talk about it and who is actually doing it. - Annals of the American Thoracic Society
Patient perceptions of financial burden and rates of cost-related nonadherence are high among individuals with asthma across the socioeconomic spectrum. Little is known about preferences and frequency of physician-patient discussions about cost/affordability among individuals managing respiratory conditions.To examine who has a preference to discuss the cost of their asthma care with their physician, how often physician-patient communication about cost/affordability actually is occurring, and what clinical and demographic characteristics of patients are predictive of communication.Data came from 422 African American adult women with asthma who were asked about communication preferences and practices around cost and affordability with their physician. Data were analyzed using descriptive statistics and multiple variable logistic regression models.Fifty-two percent (n = 219) of this sample perceived financial burden. Seventy-two percent (n = 300) reported a preference to discuss cost with their health-care provider. Thirty-nine percent (n = 163) reported actually having a conversation with their physician about cost. Among the 61% who reported no discussion, 40% (n = 103) reported financial burden, and 55% (n = 140) reported a preference for discussion. Lower household income (P < 0.001), perception of financial burden (P < 0.001), and higher out-of-pocket expenses for medicines (P < 0.05) were significantly predictive of greater preference to communicate about cost/affordability with the doctor when adjusted for clinical and demographic characteristics. Perception of financial burden (P < 0.001), preference to discuss affordability (P < 0.001), and greater number of chronic conditions (P < 0.001) were significantly predictive of greater likelihood of communication about cost/affordability with the doctor when adjusted for clinical and demographic characteristics. Bivariate analyses revealed that patients who reported a discussion of cost were more likely to report worse asthma control and lower asthma-related quality of life.An imbalance is evident between patients who would like to discuss cost with their doctor and those who actually do. Patients are interested in low-cost options and a venue for addressing their concerns with a care provider; therefore, a greater understanding is needed in how to effectively and efficiently integrate these conversations and viable solutions into the delivery of health care. Additional research is necessary to determine whether communication about the cost of therapy is associated with health outcomes.
Heart disease management by women: does intervention format matter? - Health education & behavior : the official publication of the Society for Public Health Education
A randomized controlled trial of two formats of a program (Women Take PRIDE) to enhance management of heart disease by patients was conducted. Older women (N = 575) were randomly assigned to a group or self-directed format or to a control group. Data regarding symptoms, functional health status, and weight were collected at baseline and at 4, 12, and 18 months. The formats produced different outcomes. At 18 months, the self-directed format was better than the control in reducing the number (p ≤ .02), frequency (p ≤ .03), and bothersomeness (p ≤ .02) of cardiac symptoms. The self-directed format was also better than the group format in reducing symptom frequency of all types (p ≤ .04). The group format improved ambulation at 12 months (p ≤ .04) and weight loss at 18 months (p ≤ .03), and group participants were more likely to complete the program (p ≤ .05). The availability of different learning formats could enhance management of cardiovascular disease by patients.© 2014 Society for Public Health Education.
Patient perceptions of asthma-related financial burden: public vs. private health insurance in the United States. - Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology
Given the complexity of the health insurance market in the United States and the confusion that often stems from these complexities, patient perception about the value of health insurance in managing chronic disease is important to understand.To examine differences between public and private health insurance in perceptions of financial burden with managing asthma, outcomes, and factors that explain these perceptions.Secondary analysis was performed using baseline data from a randomized clinical trial that were collected through telephone interviews with 219 African American women seeking services for asthma and reporting perceptions of financial burden with asthma management. Path analysis with multigroup models and multiple variable regression analyses were used to examine associations.For public (P < .001) and private (P < .01) coverage, being married and more educated were indirectly associated with greater perceptions of financial burden through different explanatory pathways. When adjusted for multiple morbidities, asthma control, income, and out-of-pocket expenses, those with private insurance used fewer inpatient (P < .05) and emergency department (P < .001) services compared with those with public insurance. When also adjusted for health insurance, greater financial burden was associated with more urgent office visits (P < .001) and lower quality of life (P < .001).African American women who perceive asthma as a financial burden regardless of health insurance report more urgent health care visits and lower quality of life. Burden may be present despite having and being able to generate economic resources and health insurance. Further policy efforts are indicated and special attention should focus on type of coverage.Copyright © 2014 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.
Isolation and optimization for affinity and biophysical characteristics of anti-CCL17 antibodies from the VH1-69 germline gene. - Protein engineering, design & selection : PEDS
CCL17 is a homeostatic chemokine associated with several human inflammatory pathologies. This makes CCL17 a potential point of intervention in inflammatory diseases. Using a Fab-pIX phage display system we were able to select antibodies that specifically bind to CCL17 and neutralize CCL17-mediated signaling. Many of the selected antibodies belong to the VH1-69 germline gene family. The VH1-69 germline gene is represented at a high frequency in the human antibody repertoire and is seen in the early immune response to a variety of pathogens. The heavy chain CDR2 of this germline gene is notably hydrophobic and can insert into hydrophobic pockets of antigens, providing much of the binding energy for these antibodies. Affinity maturation of our primary binders by light chain mutagenesis produced antibodies with sub-nanomolar affinities, with affinity improvements up to 100-fold. These were screened for non-specific protein-protein interactions as a filter for solubility. All of our high affinity antibodies were found to have high levels of non-specific protein-protein interactions. We speculated that this was due to the hydrophobicity within the germline heavy chain CDR1 and CDR2. To ameliorate this problem, we generated a phage display library for one of the clones, where the surface-exposed residues within H-CDR1 and H-CDR2 were randomized. High stringency panning of this library against human CCL17 resulted in further affinity improvement, along with reduction in protein-protein interaction in some new variants. In addition, we improved the cross-reactivity to cynomolgus CCL17. We demonstrate that affinity maturation through targeted libraries in the VH1-69 germline gene can improve both affinity and biophysical characteristics of antibodies derived from this gene scaffold.© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.
Blood transfusion practices in dialysis patients in a dynamic regulatory environment. - American journal of kidney diseases : the official journal of the National Kidney Foundation
In 2011, Medicare implemented a prospective payment system (PPS) covering an expanded bundle of services that excluded blood transfusions. This led to concern about inappropriate substitution of transfusions for other anemia management methods.Medicare claims were used to calculate transfusion rates among dialysis patients pre- and post-PPS. Linear probability regressions adjusted transfusion trends for patient characteristics.Dialysis patients for whom Medicare was the primary payer between 2008 and 2012.Pre-PPS (2008-2010) versus post-PPS (2011-2012).Monthly and annual probability of receiving one or more blood transfusions.Monthly rates of one or more transfusions varied from 3.8%-4.8% and tended to be lowest in 2010. Annual rates of transfusion events per patient were -10% higher in relative terms post-PPS, but the absolute magnitude of the increase was modest (-0.05 events/patient). A larger proportion received 4 or more transfusions (3.3% in 2011 and 2012 vs 2.7%-2.8% in prior years). Controlling for patient characteristics, the monthly probability of receiving a transfusion was significantly higher post-PPS (β = 0.0034; P < 0.001), representing an -7% relative increase. Transfusions were more likely for females and patients with more comorbid conditions and less likely for blacks both pre- and post-PPS.Possible underidentification of transfusions in the Medicare claims, particularly in the inpatient setting. Also, we do not observe which patients might be appropriate candidates for kidney transplantation.Transfusion rates increased post-PPS, but these increases were modest in both absolute and relative terms. The largest increase occurred for patients already receiving several transfusions. Although these findings may reduce concerns regarding the impact of Medicare's PPS on inappropriate transfusions that impair access to kidney transplantation or stress blood bank resources, transfusions should continue to be monitored.Copyright © 2014 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.
Sodium and potassium in health and disease. - Metal ions in life sciences
Sodium and potassium are essential for human health. They are important ions in the body and are associated with many physiologic and pathophysiologic processes. The chapter summarizes the basic physiologic actions of sodium and potassium on membranes of the neurologic and muscular systems. It provides information regarding the kinetics, i.e., absorption, distribution, and excretion of these ions and their movement between the intracellular and extracellular compartments. It also explains the physiologic systems that can influence proper homeostasis between sodium and potassium. Concentrations of sodium in the blood that exceed or do not reach the normal value range are called hypernatremia or hyponatremia, respectively. Similarly, the clinicians recognize hyperkalemia and hypokalemia. Pathologies associated with these states are described and examples of some of the diseases are presented here.
Intrusiveness of behavioral treatments for adults with intellectual disability. - Research in developmental disabilities
The current study examined treatment intrusiveness within behavior intervention programs developed for adults with intellectual disability (ID). Behavior analysts provided demographic information about themselves, their adult clients with ID, and their clients' behavior intervention plans, and they completed an online version of the Treatment Intrusiveness Measure (Carter et al., 2009), an instrument that provides a Base Level Intrusiveness Score (BLIS; a score computed across five areas of categorization, such as, Health and Safety) and a Modified Level of Intrusiveness Score (MLIS), which assesses the presence or absence of intrusiveness-reducing practices. Among other findings, various statistical analyses revealed (a) a significant difference between BLIS and modified (BLIS minus MLIS) intrusiveness scores, (b) the practices within which most of the intrusiveness was concentrated within behavioral treatment programs, and (c) the least- and most-utilized intrusiveness-reducing practices. Implications are provided to assist professionals working with adults with ID who engage in challenging behavior and are supported through behavior intervention services.Copyright © 2013 Elsevier Ltd. All rights reserved.
The initial impact of Medicare's new prospective payment system for kidney dialysis. - American journal of kidney diseases : the official journal of the National Kidney Foundation
Medicare implemented a new prospective payment system (PPS) on January 1, 2011. This PPS covers an expanded bundle of services, including services previously paid on a fee-for-service basis. The objectives of the new PPS include more efficient decisions about treatment service combinations and modality choice.Primary data for this study are Medicare claims files for all dialysis patients for whom Medicare is the primary payer. We compare use of key injectable medications under the bundled PPS to use when those drugs were separately billable and examine variability across providers. We also compare each patient's dialysis modality before and after the PPS.Use of relatively expensive drugs, including erythropoiesis-stimulating agents, declined substantially after institution of the new PPS, whereas use of iron products, often therapeutic substitutes for erythropoiesis-stimulating agents, increased. Less expensive vitamin D products were substituted for more expensive types. Drug spending overall decreased by ∼$25 per session, or about 5 times the mandated reduction in the base payment rate of ∼$5. Use of peritoneal dialysis increased in 2011 after being nearly flat in the years prior to the PPS, with the increase concentrated in patients in their first or second year of dialysis. Home hemodialysis continued to increase as a percentage of total dialysis services, but at a rate similar to the pre-PPS trend.The expanded bundle dialysis PPS provided incentives for the use of lower cost therapies. These incentives seem to have motivated dialysis providers to move toward lower cost methods of care in both their use of drugs and choice of modalities.Copyright © 2013 National Kidney Foundation, Inc. All rights reserved.

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