Robert Dennis Christensen portrait
  • Professor, Pediatrics
801-581-7052

Languages

  • English, Fluent.

Publications

  • Bahr TM, Knudsen MC, Lozano-Chinga M, Agarwal AM, Meznarich JA, Ohls RK, Christensen RD (date unknown). Infantile Pyknocytosis: End-Tidal CO, %Micro-R Measurements, Next-Generation Sequencing, and Transfusion Avoidance with Darbepoetin. (pp. 227-234). Vol. 5. Accepted, .
  • Bahr TM, DuPont TL, Morris DS, Pierson SE, Esplin MS, Brown SM, O'Brien EA, Ilstrup SJ, Christensen RD (date unknown). First report of using low-titer cold-stored type O whole blood in massive postpartum hemorrhage. (pp. 3089-3092). Vol. 59. Accepted, .
  • Bahr TM, Lozano-Chinga M, Agarwal AM, Meznarich JA, Yost CC, Li P, Reading NS, Prchal JT, Christensen RD (date unknown). A Novel Variant in G6PD (c.1375C>G) Identified from a Hispanic Neonate with Extreme Hyperbilirubinemia and Low G6PD Enzymatic Activity. (pp. 532-535). Vol. 117. Accepted, .
  • Judkins AJ, MacQueen BC, Christensen RD, Comstock J, Mao R, Flores-Daboub J (date unknown). Non-Immune Hydrops, Hypotonia, Encephalopathy, and Liver Failure with Novel Compound Heterozygous AHCY Mutations. (pp. 337-340). Vol. 114. Accepted, .
  • Song J, Christensen RD, Thiagarajan P, Prchal JT (date unknown). Does neocytolysis exist after descent from high altitude?. e13713. Accepted, .
  • Bahr TM, Lozano-Chinga M, Agarwal AM, Meznarich JA, Gerday E, Smoot JL, Taylor A, Christensen RD (date unknown). Dizygotic twins with prolonged jaundice and microcytic, hypochromic, hemolytic anemia with pyropoikilocytosis. Vol. 85, 102462. Accepted, .
  • Bahr TM, Judkins AJ, Christensen RD, Baer VL, Henry E, Minton SD, Gerday E, Bennett ST (date unknown). Neonates with suspected microangiopathic disorders: performance of standard manual schistocyte enumeration vs. the automated fragmented red cell count. Vol. 39, 1555-1561. Accepted, .
  • Fustolo-Gunnink SF, Roehr CC, Lieberman L, Christensen RD, Van Der Bom JG, Dame C, Del Vecchio A, Keir AK, Curley A, Stanworth SJ, Lopriore E (date unknown). Platelet and red cell transfusions for neonates: lifesavers or Trojan horses?. Vol. 12, 797-800. Accepted, .
  • Bahr TM, DuPont TL, Christensen TR, Rees T, O'Brien EA, Ilstrup SJ, Christensen RD (date unknown). Evaluating emergency-release blood transfusion of newborn infants at the Intermountain Healthcare hospitals. Vol. 59, 3113-3119. Accepted, .
  • MacQueen BC, Christensen RD, Yost CC, Gordon PV, Baer VL, Schlaberg R, Lowe J (date unknown). Reference intervals for stool calprotectin in preterm neonates and their utility for the diagnosis of necrotizing enterocolitis. Vol. 38, 1379-1385. Accepted, .
  • Pakdeeto S, Christensen TR, Bahr TM, Gerday E, Sheffield MJ, Christensen KS, Supapannachart S, Nuntnarumit P, Sukwiset S, Ohls RK, Christensen RD (date unknown). Reference intervals for end-tidal carbon monoxide of preterm neonates. Accepted, .
  • Bahr TM, Henry E, Christensen RD, Minton SD, Bhutani VK (date unknown). A New Hour-Specific Serum Bilirubin Nomogram for Neonates ≥35 Weeks of Gestation. Vol. 236, 28-33.e1. Accepted, .
  • Bahr TM, Carr NR, Christensen TR, Wilkes J, O'Brien EA, German KR, Ohls RK, Ward DM, Christensen RD (date unknown). Early iron supplementation and iron sufficiency at one month of age in NICU patients at-risk for iron deficiency. Vol. 90, 102575. Accepted, .
  • Hulse W, Bahr TM, Fredrickson L, Canfield CM, Friddle K, Pysher TJ, Ilstrup SJ, Ohls RK, Christensen RD (date unknown). Warming blood products for transfusion to neonates: In vitro assessments. Vol. 60, 1924-1928. Accepted, .
  • Christensen RD, Agarwal AM, George TI, Bhutani VK, Yaish HM (date unknown). Acute neonatal bilirubin encephalopathy in the State of Utah 2009-2018. Vol. 72, 10-13. Accepted, .
  • Bahr TM, Christensen TR, Henry E, Wilkes J, Ohls RK, Bennett ST, Ward DM, Pysher TJ, Christensen RD (date unknown). Neonatal Reference Intervals for the Complete Blood Count Parameters MicroR and HYPO-He: Sensitivity Beyond the Red Cell Indices for Identifying Microcytic and Hypochromic Disorders. Accepted, .
  • Bhutani VK, Maisels MJ, Schutzman DL, Castillo Cuadrado ME, Aby JL, Bogen DL, Christensen RD, Watchko JF, Wong RJ, Stevenson DK (date unknown). Identification of risk for neonatal haemolysis. Vol. 107, 1350-1356. Accepted, .
  • Bahr TM, Shakib JH, Stipelman CH, Kawamoto K, Lauer S, Christensen RD (date unknown). Improvement Initiative: End-Tidal Carbon Monoxide Measurement in Newborns Receiving Phototherapy. Accepted, .
  • Hulse W, Bahr TM, Morris DS, Richards DS, Ilstrup SJ, Christensen RD (date unknown). Emergency-release blood transfusions after postpartum hemorrhage at the Intermountain Healthcare hospitals. Vol. 60, 1418-1423. Accepted, .
  • MacQueen BC, Christensen RD, Baer VL, Ward DM, Snow GL (date unknown). Screening umbilical cord blood for congenital Iron deficiency. Vol. 77, 95-100. Accepted, .
  • Meznarich JA, Draper L, Christensen RD, Yaish HM, Luem ND, Pysher TJ, Jung G, Nemeth E, Ganz T, Ward DM (date unknown). Fetal presentation of congenital dyserythropoietic anemia type 1 with novel compound heterozygous CDAN1 mutations. Vol. 71, 63-66. Accepted, .
  • Shah P, Cannon DC, Lowe JR, Phillips J, Christensen RD, Kamath-Rayne B, Rosenberg A, Wiedmeier S, Patel S, Winter S, Baker S, Ohls RK (date unknown). Effect of blood transfusions on cognitive development in very low birth weight infants. Vol. 41, 1412-1418. Accepted, .
  • Gerday E, Brereton JB, Bahr TM, Elmont JO, Fullmer S, Middleton BA, Ward DM, Ohls RK, Christensen RD (date unknown). Urinary ferritin; a potential noninvasive way to screen NICU patients for iron deficiency. Vol. 41, 1419-1425. Accepted, .
  • Bahr TM, Ward DM, Jia X, Ohls RK, German KR, Christensen RD (date unknown). Is the erythropoietin-erythroferrone-hepcidin axis intact in human neonates?. Vol. 88, 102536. Accepted, .
  • Rets A, Clayton AL, Christensen RD, Agarwal AM (date unknown). Molecular diagnostic update in hereditary hemolytic anemia and neonatal hyperbilirubinemia. Vol. 41 Suppl 1, 95-101. Accepted, .
  • Bahr TM, Christensen RD, Ward DM, Meng F, Jackson LK, Doyle K, Christensen DR, Harvey AG, Yaish HM (date unknown). Ferritin in serum and urine: A pilot study. Vol. 76, 59-62. Accepted, .
  • Christensen RD, Baer VL, MacQueen BC, O'Brien EA, Ilstrup SJ (date unknown). ABO hemolytic disease of the fetus and newborn: thirteen years of data after implementing a universal bilirubin screening and management program. Vol. 38, 517-525. Accepted, .
  • Wiedmeier SE, Bahr TM, Ohls RK, Christensen TR, Baer VL, Ilstrup SJ, Cail K, Christensen RD (date unknown). Exchange transfusion for hemolytic hyperbilirubinemia: could some be averted by emergent administration of an inhibitor of bilirubin production?. Vol. 41, 860-864. Accepted, .
  • Bahr TM, Agarwal AM, Christensen RD (date unknown). Does heterozygosity for UGT1A1 *28 convey increased risk for severe neonatal jaundice?. Vol. 41, 658-660. Accepted, .
  • Bahr TM, Henry E, Hulse W, Baer VL, Prchal JT, Bhutani VK, Christensen RD (date unknown). Early Hyperbilirubinemia in Neonates with Down Syndrome. Vol. 219, 140-145. Accepted, .
  • D'Amato G, Faienza MF, Palladino V, Bianchi FP, Natale MP, Christensen RD, Giordano P, Del Vecchio A (date unknown). Red blood cell transfusions and potentially related morbidities in neonates under 32 weeks' gestation. Vol. 19, 113-119. Accepted, .
  • Bahr TM, Baer VL, Ohls RK, Christensen TR, Ward DM, Bennett ST, Christensen RD (date unknown). Reconciling markedly discordant values of serum ferritin versus reticulocyte hemoglobin content. Vol. 41, 619-626. Accepted, .
  • Maheshwari A, Patel RM, Christensen RD (date unknown). Anemia, red blood cell transfusions, and necrotizing enterocolitis. Vol. 27, 47-51. Accepted, .
  • Konana OS, Bahr TM, Strike HR, Coleman J, Snow GL, Christensen RD (date unknown). Decision Accuracy and Safety of Transcutaneous Bilirubin Screening at Intermountain Healthcare. Vol. 228, 53-57. Accepted, .
  • Bahr TM, Shakib JH, Stipelman CH, Kawamoto K, Cail K, Lauer S, Christensen RD (date unknown). Improving the Bilirubin Management Program in the Newborn Nursery: Background, Aims, and Protocol. Vol. 117, 358-364. Accepted, .
  • Christensen RD (date unknown). Medicinal Uses of Hematopoietic Growth Factors in Neonatal Medicine. Vol. 261, 257-283. Accepted, .
  • Judkins AJ, MacQueen BC, Christensen RD, Henry E, Snow GL, Bennett ST (date unknown). Automated Quantification of Fragmented Red Blood Cells: Neonatal Reference Intervals and Clinical Disorders of Neonatal Intensive Care Unit Patients with High Values. Vol. 115, 5-12. Accepted, .
  • Carroll PD, Livingston E, Baer VL, Karkula K, Christensen RD (date unknown). Evaluating Otherwise-Discarded Umbilical Cord Blood as a Source for a Neonate's Complete Blood Cell Count at Various Time Points. Vol. 114, 82-86. Accepted, .
  • Bahr TM, Henry E, Christensen RD, Minton SD, Bhutani VK (date unknown). Reply. (pp. 317-318). Vol. 237. Accepted, .
  • Meznarich JA, Rets A, Agarwal AM, Christensen RD, Reading NS, Kuypers FA, Prchal JT (date unknown). Novel, de novo, beta-globin variant with decreased oxygen affinity (HBB:c.317T>A, "Hemoglobin St. George") in a healthy child with low oxygen saturations and anemia. Accepted, .
  • Staffa SJ, Joerger JD, Henry E, Christensen RD, Brugnara C, Zurakowski D (date unknown). Pediatric hematology normal ranges derived from pediatric primary care patients. Accepted, .
  • Bahr TM, Benson AE, Kling PJ, Ohls RK, Ward DM, Christensen RD (date unknown). Maternal obesity and impaired offspring neurodevelopment: could fetal iron deficiency be a pathogenic link?. (pp. 1199-1200). Vol. 41. Accepted, .
  • Bahr TM, Kerry BB, Baserga MC, Christensen RD (date unknown). Improving thermoregulation in transported preterm infants. (pp. 356-357). Vol. 41. Accepted, .
  • Baer VL, Hulse W, Bahr TM, Ilstrup SJ, Christensen RD (date unknown). Absence of severe neonatal ABO hemolytic disease at Intermountain Healthcare. Why?. (pp. 352-353). Vol. 40. Accepted, .
  • Bahr TM, Judkins AJ, Baer VL, Henry E, Grubb PH, Hulse W, Pysher TJ, Bennett ST, Christensen RD (date unknown). The fragmented red cell count can support the diagnosis of a microangiopathic neonatal condition. (pp. 354-355). Vol. 40. Accepted, .
  • Bahr TM, Christensen RD, Agarwal AM, George TI, Bhutani VK (date unknown). The Neonatal Acute Bilirubin Encephalopathy Registry (NABER): Background, Aims, and Protocol. Vol. 115, 242-246. Accepted, .