Internists, Nephrologist (kidney)
4 years of experience
Video profile
University Area
Providence Alaska Medical Center
4015 Lake Otis Pkwy
Suite 101
Anchorage, AK 99508
907-375-5200
Locations and availability (2)

Education ?

Medical School Score
Northeastern Ohio Universities (2006)
  • Currently 1 of 4 apples

Awards & Distinctions ?

Associations
American Board of Internal Medicine

Affiliations ?

Dr. Barnes is affiliated with 2 hospitals.

Hospital Affilations

Score

Rankings

  • Providence Alaska Medical Center
    PO Box 196604, Anchorage, AK 99519
    • Currently 1 of 4 crosses
  • Providence Extended Care Center
    4900 Eagle St, Anchorage, AK 99503
  • Publications & Research

    Dr. Barnes has contributed to 32 publications.
    Title Relapse or Worsening of Nephrotic Syndrome in Idiopathic Membranous Nephropathy Can Occur Even Though the Glomerular Immune Deposits Have Been Eradicated.
    Date February 2012
    Journal Nephron. Clinical Practice
    Excerpt

    Relapse or worsening of nephrotic syndrome (NS) in idiopathic membranous nephropathy (IMN) is generally assumed to be due to recurrent disease. Here we document that often that may not be the case.

    Title Retropharyngeal Edema: an Unusual Manifestation of Kawasaki Disease.
    Date November 2010
    Journal The Journal of Emergency Medicine
    Excerpt

    Kawasaki disease (KD) is an acute multisystem vasculitis of unknown etiology that typically affects young children. KD presenting as a retropharyngeal inflammatory process is very rare.

    Title A Latching Magnetooptical Polarization Switch.
    Date June 2010
    Journal Applied Optics
    Title 119sn Nmr Chemical Shift Tensors in Anhydrous and Hydrated Si8o20(snme3)8 Crystals.
    Date August 2008
    Journal Magnetic Resonance in Chemistry : Mrc
    Excerpt

    (119)Sn chemical shift tensors of crystalline trialkyltin functionalized octameric spherosilicates, Si(8)O(20)(SnMe(3))(8), have been determined by fitting sideband intensities in solid-state magic angle spinning (MAS) NMR spectra. Tin chemical shift parameters are exquisitely sensitive to the presence of water of crystallization. Both hydrogen bonding and incipient oxygen-tin bonding from molecular water impact the local tin environment. Tin chemical shift tensors in the crystalline derivatives reflect the changes in geometry and coordination number at the tin centers. Chemical shift correlations on the crystalline derivatives, with known x-ray structures, are used to infer the tin coordination environment in an amorphous sample.

    Title Mr Urography: Techniques and Clinical Applications.
    Date February 2008
    Journal Radiographics : a Review Publication of the Radiological Society of North America, Inc
    Excerpt

    Magnetic resonance (MR) urography comprises an evolving group of techniques with the potential for allowing optimal noninvasive evaluation of many abnormalities of the urinary tract. MR urography is clinically useful in the evaluation of suspected urinary tract obstruction, hematuria, and congenital anomalies, as well as surgically altered anatomy, and can be particularly beneficial in pediatric or pregnant patients or when ionizing radiation is to be avoided. The most common MR urographic techniques for displaying the urinary tract can be divided into two categories: static-fluid MR urography and excretory MR urography. Static-fluid MR urography makes use of heavily T2-weighted sequences to image the urinary tract as a static collection of fluid, can be repeated sequentially (cine MR urography) to better demonstrate the ureters in their entirety and to confirm the presence of fixed stenoses, and is most successful in patients with dilated or obstructed collecting systems. Excretory MR urography is performed during the excretory phase of enhancement after the intravenous administration of gadolinium-based contrast material; thus, the patient must have sufficient renal function to allow the excretion and even distribution of the contrast material. Diuretic administration is an important adjunct to excretory MR urography, which can better demonstrate nondilated systems. Static-fluid and excretory MR urography can be combined with conventional MR imaging for comprehensive evaluation of the urinary tract. The successful interpretation of MR urographic examinations requires familiarity with the many pitfalls and artifacts that can be encountered with these techniques.

    Title Soft Tissue Amyloidoma of the Extremities: a Case Report and Review of the Literature.
    Date May 2005
    Journal Archives of Pathology & Laboratory Medicine
    Excerpt

    The deposition of amyloid as a distinct, clinically apparent mass is uncommon, particularly in soft tissues. Among reported sites of soft tissue amyloidomas, the extremities are quite rare. Amyloid tumors can mimic malignant neoplasms both clinically and radiologically. We report a case of AA amyloidoma presenting in the deltoid region with radiological features suggesting sarcoma. Cytomorphology from fine-needle aspiration material, tissue histology, and appearance by magnetic resonance imaging are described. The literature on soft tissue amyloidoma is reviewed.

    Title Building Block Syntheses of Site-isolated Vanadyl Groups in Silicate Oxides.
    Date April 2005
    Journal Chemical Communications (cambridge, England)
    Excerpt

    Cross-linking of the cubic silicate building block, Si8O20 with vanadyl chloride leads to porous solids in which a homogeneous dispersion of isolated vanadyl groups is maintained throughout the matrix even at high loadings of vanadium.

    Title Ionic Liquids: a New Class of Sensing Materials for Detection of Organic Vapors Based on the Use of a Quartz Crystal Microbalance.
    Date April 2003
    Journal Analytical Chemistry
    Excerpt

    A QCM device employing ionic liquids as the sensing materials for organic vapors has been developed and evaluated. The sensing mechanism is based on the fact that the viscosity of the ionic liquid membrane decreases rapidly due to solubilization of analytes in the ionic liquids. This change in viscosity, which varies with the chemical species of the vapors and the types of ionic liquids, results in a frequency shift of the corresponding quartz crystal. The QCM sensor demonstrated a rapid response (average response time of less than 2 s) to organic vapors with an excellent reversibility because of the fast diffusion of analytes in ionic liquids. Furthermore, the ionic liquids, with zero vapor pressure and stable chemical properties, ensure a long-term shelf life for the sensor.

    Title Exafs Study of Uranyl Nitrate Dimer at High and Low Temperature.
    Date April 2001
    Journal Inorganic Chemistry
    Title Tungsten Fluorides: Syntheses and Electrochemical Characterization in the Flinak Molten Salt Eutectic.
    Date March 2001
    Journal Inorganic Chemistry
    Excerpt

    The following tungsten fluorides have been synthesized by simple addition reactions or by reduction with tungsten metal at elevated temperature: KWF7, K2WF8, MWF6 (M = K, Na, Rb, Cs), K2WF7, M3WF8 (M = K, Na, Rb), and K3WF6. The compounds were characterized by their Raman spectra and by cyclic voltammetry in the molten FLINAK eutectic melt (46.5, 11.5, and 42.0 mol % of LiF, NaF, and KF, respectively) at 475-800 degrees C. X-ray crystal structures are reported for two new compounds K2WF7 and K3WF6. The crystals of K2WF7 were orthorhombic, space group Pnma (No. 62) with a = 9.800(2) A, b = 5.7360(11) A, c = 11.723(2) A, and Z = 4. Crystals of K3WF6 were cubic, space group Fm3 (No. 225) with a = b = c = 8.9160(10) A, Z = 4. Electrodeposition of tungsten metal on Pt from FLINAK, prepared by the addition of WF6 gas and metallic tungsten to the melt, is suggested to result from reduction of an equilibrium mixture of WF8(3-) and WF6(3-).

    Title Is an Integrated Practice in Your Future?
    Date April 1996
    Journal The Internist
    Title Teaching Human Anatomy in Physical Therapy Education in the United States: a Survey.
    Date August 1994
    Journal Physical Therapy
    Excerpt

    BACKGROUND AND PURPOSE. The purpose of this study was to determine how human anatomy was being taught in physical therapy programs in the United States. SUBJECTS. Faculty in 103 physical therapy programs participated in the study. METHODS. A six-page questionnaire, which was mailed to 145 physical therapy programs, contained five sections: demographics, human gross anatomy--present and future, administration/cost, human anatomy textbooks, and human gross anatomy content areas. RESULTS. Anatomy was a laboratory-intensive course, with dissection being the primary laboratory teaching method. Use of prosected specimens, various audiovisuals, and computer-assisted instruction was also documented. Half of those teaching anatomy had a degree in physical therapy, and 65.6% of these educators were doctorally prepared. When comparing anatomy courses taught by physical therapy faculty and non-physical therapy faculty, differences existed between the two groups with respect to course content and clinical applicability. The most significant difference in content area emphasis was noted in the thoracic area. CONCLUSION AND DISCUSSION. Differences noted in course-content emphasis demonstrate the necessity for physical therapy faculty to communicate with non-physical therapy faculty teaching human anatomy about course content. Although the survey results have indicated that numerous texts are in use, the value placed on clinical applicability remains a significant consideration.

    Title Complications Associated with the Seidel Nail.
    Date September 1993
    Journal Orthopaedic Review
    Excerpt

    The Seidel nail is an intramedullary locking device available for the treatment of humeral shaft fractures that require operative fixation. A retrospective review of 13 consecutive patients treated with the Seidel nail was undertaken to evaluate results, with attention to complications. No nerve palsies or infections occurred. Complications occurred in 46% of the patients and included intraoperative comminution associated with lateral placement of the pilot hole, instrumentation failure, and underreaming of the canal, resulting in iatrogenic fracture.

    Title Quality Improvement Act Gets First Antitrust Test.
    Date November 1990
    Journal Physician Executive
    Excerpt

    In an opinion issued on February 20, 1990, the Federal District Court for the Central District of California summarily dismissed the claim of Dr. George M. Austin that Santa Barbara Cottage Hospital and five individual physicians conspired to suspend his hospital privileges in violation of Section 1 of the Sherman Act. The decision was based on the court's determination that the actions of the hospital and defendant physicians were immune from federal antitrust liability under the Health Care Quality Improvement Act of 1986. The case is the first test of the Act in connection with a staff privileges claim under the antitrust laws and is the first affirmance of the immunity protections of the Act.

    Title Physician Fee-setting Requires Scrutiny.
    Date March 1989
    Journal Physician Executive
    Excerpt

    To avoid antitrust liability from physician fee-setting in HMOs and PPOs, participating physicians should share the risk of profit and loss. "Health Law" is a regular feature of Physician Executive contributed by the law firm of Epstein Becker and Green, P.C. Douglas A. Hastings, Esq., a partner in the firm's Washington, D.C., offices serves as column editor.

    Title Federal Court Vindicates Ipa Fee Setting and Membership Decisions.
    Date March 1989
    Journal The Internist
    Title What is an Ipo (independent Physicians Organization)?
    Date January 1989
    Journal The Internist
    Title Physician Organizations Begin Making Inroads in the Health Care Marketplace.
    Date December 1988
    Journal The Internist
    Title A Tribute to a Pioneer Radiologist: Alfred Leftwich Gray, M.d. (1873-1932).
    Date January 1988
    Journal Ajr. American Journal of Roentgenology
    Title Physician Organizations As Payment Negotiators: Antitrust Issues.
    Date June 1987
    Journal Physician Executive
    Title A Practical Guide to Health Care Antitrust Issues.
    Date June 1986
    Journal Trustee : the Journal for Hospital Governing Boards
    Excerpt

    This article provides a brief overview of antitrust principles that are applicable to the health care industry, and applies those principles to some major antitrust issues that hospitals currently face.

    Title Theory of Pressure Effects on Nonradiative Capture.
    Date
    Journal Physical Review. B, Condensed Matter
    Title Pressure Dependence of Impurity Levels in Semiconductors: The Deep Gold Acceptor Level and Shallow Donor and Acceptor Levels in Silicon.
    Date
    Journal Physical Review. B, Condensed Matter
    Title Reply to "comment on Volume Relaxation Around Defects in Silicon Upon Electron Emission"
    Date
    Journal Physical Review. B, Condensed Matter
    Title Pressure Dependence of the E2 and E1 Deep Levels in Gaas, Gap, and Their Alloys.
    Date
    Journal Physical Review. B, Condensed Matter
    Title Lattice Relaxation Accompanying Carrier Capture and Emission by Deep Electronic Levels in Semiconductors.
    Date
    Journal Physical Review Letters
    Title Crown Ether-doped Sol-gel Materials for Strontium(ii) Separation
    Date
    Journal Analytical Chemistry
    Excerpt

    Hybrid organic/inorganic sol-gel materials containing an encapsulated crown ether ligand were found to selectively remove 91.4 +/- 1.3% of Sr2+ from a solution containing excess of competing ions such as Ca2+. The crown ether ligand, 1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-bis(malonate) ligand (Na4oddm), with known high affinity for Sr2+ was encapsulated in hydrophilic SiO2 through a simple sol-gel process. Washing the Sr(2+)-loaded gel with acid or ethylenediaminetetraacetic acid disodium salt recovered the Sr2+ from the sol-gel sorbent and regenerated the doped gel for subsequent Sr2+ intake. The approach reported here is a new alternative to the use of crown ethers in metal ion separation through, for example, solvent extraction or the use of sorbents containing chemically grafted crown ether ligands.

    Title Formation of a Tantalum Siloxane Cage Complex in the Reaction of (eta(5)-c(5)me(5))tame(4) with a Silanetriol.
    Date
    Journal Inorganic Chemistry
    Title Diffusional and Internal Rotation in Single and Linked Trinuclear Bis(carbyne) Cluster Complexes Determined by (13)c Nmr Relaxation Time Measurements.
    Date
    Journal Inorganic Chemistry
    Excerpt

    Carbon-13 NMR relaxation times have been measured as a function of temperature for a family of bis(carbyne) cluster complexes: (CpCo)(3)(&mgr;(3)-CPh)(2) (1a), (CpCo)(3)(&mgr;(3)-CH)(&mgr;(3)-CPh) (1b), and X(1,4-C(6)H(4))Y with X = Y = (CpCo)(3)(&mgr;(3)-CPh)(&mgr;(3)-C-) (2); X = (CpCo)(3)(&mgr;(3)-CPh)(&mgr;(3)-C-), Y = -C&tbd1;CPh (3); or X = Y = -C&tbd1;CPh (4). These molecules can be regarded as symmetric top molecules in which the phenyl rings are adjacent to zero, one, or two Cp(3)Co(3) metal cluster units. Molecular rotational diffusion coefficients about the different axes of the molecules (D( perpendicular)and D(s)) obtained from the relaxation times indicate that the motions of the molecules are highly anisotropic. Rapid internal rotation of the phenyl rings described by the rotation rates R contributes significantly to that anisotropy. Phenyl rings adjacent to an alkyne group rotate at a rate comparable to that of free benzene whereas phenyl rings bound to a (CpCo)(3) group through a &mgr;(3)-carbyne ligand show significantly reduced rates of rotation. The observed difference in rotation rates is believed to be due primarily to steric interactions between phenyl rings and their substituents.

    Title Comparative Uv-vis Studies of Uranyl Chloride Complex in Two Basic Ambient-temperature Melt Systems: The Observation of Spectral and Thermodynamic Variations Induced Via Hydrogen Bonding.
    Date
    Journal Inorganic Chemistry
    Title Systematic Variation of Metal-metal Bond Order in Metalloporphyrin Dimers.
    Date
    Journal Proceedings of the National Academy of Sciences of the United States of America
    Excerpt

    A general method for synthesizing a novel class of metalloporphyrin dimers containing unbridged metal-metal bonds is presented. By choosing the appropriate metal, the bond order in these dimers can be varied systematically. The synthesis and characterization of osmium(II) and molybdenum(II) porphyrin dimers containing the respective metal-metal double and quadruple bonds are described. A simple molecular orbital treatment that accounts for the metal-metal bonding, spin state, and geometry in these complexes is discussed.

    Title Mechanistic Investigation of Hydrolysis Reactions of Dithioacetal Derivatives Grafted on Silica Gels.
    Date
    Journal Talanta
    Excerpt

    Silica gels believed to be grafted with dithioacetal derivatives were recently used for Hg(II) extraction, and were found to selectively remove 94-100% of Hg(2+) ions from metal ion mixtures. The current studies with one derivative suggest that the functional group in the Hg(II) removal is the mercapto (SH) ligand. The dithioacetal group in (ClCOCH(2)S)(2)CHPh (2) was hydrolyzed during its reaction with amine (O)(3)Si(CH(2))(3)NH(2) (3) grafted on silica gel to give the mercapto ligand (O)(3)Si(CH(2))(3)NHCOCH(2)SH (4). The silica gel grafted with the mercapto ligand 4 selectively removed Hg(2+) ions with reported high capacities.


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