Patient Portal

Osama Altayar, MD

Instructor, Medicine
Division of Gastroenterology

Specialty Areas

Gastroenterology

Hospital Affiliations

Barnes-Jewish Hospital

Languages

Arabic

Referral Information

Professional Consultation Only

Areas of Clinical Interest

General gastroenterology, iron deficiency anemia, gastrointestinal bleeding, gastric intestinal metaplasia, autoimmune gastritis, pernicious anemia, irritable bowel syndrome, functional gastrointestinal disorders, luminal gastrointestinal disorders

  • Location(s)
  • Education
  • Publication & Research

Location(s)

Location(s)

Center for Advanced Medicine
Gastrointestinal Center

4921 Parkview Place
St. Louis, MO 63110

Office Phone: 314-273-0401
Fax: 314-362-2357

Education

Education

Fellowship: Gastroenterology: Washington University in St. Louis School of Medicine, St. Louis, MO 2019
Residency: Internal Medicine: Allegheny Health Network Medical Education Consortium, Pittsburgh, PA 2016
Fellowship: Evidence-Based Research Program: Mayo Clinic, Rochester, MN 2013
Medical Degree: University of Damascus Faculty of Medicine, Damascus, Syria 2011

Publication & Research

Publication & Research

Fibrosis Changes in the Placebo Arm of NASH Clinical Trials.
Altayar O, Noureddin N, Thanda Han MA, Murad MH, Noureddin M
Clin Gastroenterol Hepatol. 2019 Oct; 17(11)2387. doi: 10.1016/j.cgh.2019.05.016.

PMID:
    31543242
    [PubMed - in process]
Related citations


Physiologic Adaptation or Cirrhotic Cardiomyopathy: It Is Time for New Definitions!
Altayar O, Lisker-Melman M
J Card Fail. 2019 Mar; 25(3)173-175. doi: 10.1016/j.cardfail.2019.01.013.

PMID:
    30716399
    [PubMed - indexed for MEDLINE]
Related citations


Transcatheter aortic valve replacement in patients with pure native aortic valve regurgitation: A systematic review and meta-analysis.
Haddad A, Arwani R, Altayar O, Sawas T, Murad MH, de Marchena E
Clin Cardiol. 2019 Jan; 42(1)159-166. doi: 10.1002/clc.23103.

PMID:
    30350358
    [PubMed - indexed for MEDLINE]
Related citations


Rates of and Factors Associated With Placebo Response in Trials of Pharmacotherapies for Nonalcoholic Steatohepatitis: Systematic Review and Meta-analysis.
Han MAT, Altayar O, Hamdeh S, Takyar V, Rotman Y, Etzion O, Lefebvre E, Safadi R, Ratziu V, Prokop LJ, Murad MH, Noureddin M
Clin Gastroenterol Hepatol. 2019 Mar; 17(4)616-629.e26. doi: 10.1016/j.cgh.2018.06.011.

PMID:
    29913275
    [PubMed - in process]
Related citations


Treatment Options for Hirsutism: A Systematic Review and Network Meta-Analysis.
Barrionuevo P, Nabhan M, Altayar O, Wang Z, Erwin PJ, Asi N, Martin KA, Murad MH
J Clin Endocrinol Metab. 2018 Apr 1; 103(4)1258-1264. doi: 10.1210/jc.2017-02052.

PMID:
    29522176
    [PubMed - indexed for MEDLINE]
Related citations


Treatments to Prevent Bone Loss in Functional Hypothalamic Amenorrhea: A Systematic Review and Meta-Analysis.
Altayar O, Al Nofal A, Carranza Leon BG, Prokop LJ, Wang Z, Murad MH
J Endocr Soc. 2017 May 1; 1(5)500-511. doi: 10.1210/js.2017-00102.

PMID:
    29264505
    [PubMed]
Related citations


Biomarkers for bile acid diarrhoea in functional bowel disorder with diarrhoea: a systematic review and meta-analysis.
Valentin N, Camilleri M, Altayar O, Vijayvargiya P, Acosta A, Nelson AD, Murad MH
Gut. 2016 Dec; 65(12)1951-1959. doi: 10.1136/gutjnl-2015-309889.

PMID:
    26347530
    [PubMed - indexed for MEDLINE]
Related citations


Psychological therapies in patients with irritable bowel syndrome: a systematic review and meta-analysis of randomized controlled trials.
Altayar O, Sharma V, Prokop LJ, Sood A, Murad MH
Gastroenterol Res Pract. 2015; 2015549308. doi: 10.1155/2015/549308.

PMID:
    25802514
    [PubMed]
Related citations


Accuracy of urea breath test in Helicobacter pylori infection: meta-analysis.
Ferwana M, Abdulmajeed I, Alhajiahmed A, Madani W, Firwana B, Hasan R, Altayar O, Limburg PJ, Murad MH, Knawy B
World J Gastroenterol. 2015 Jan 28; 21(4)1305-14. doi: 10.3748/wjg.v21.i4.1305.

PMID:
    25632206
    [PubMed - indexed for MEDLINE]
Related citations


Clinical review: Drugs commonly associated with weight change: a systematic review and meta-analysis.
Domecq JP, Prutsky G, Leppin A, Sonbol MB, Altayar O, Undavalli C, Wang Z, Elraiyah T, Brito JP, Mauck KF, Lababidi MH, Prokop LJ, Asi N, Wei J, Fidahussein S, Montori VM, Murad MH
J Clin Endocrinol Metab. 2015 Feb; 100(2)363-70. doi: 10.1210/jc.2014-3421.

PMID:
    25590213
    [PubMed - indexed for MEDLINE]
Related citations


Clinical review: The benefits and harms of systemic testosterone therapy in postmenopausal women with normal adrenal function: a systematic review and meta-analysis.
Elraiyah T, Sonbol MB, Wang Z, Khairalseed T, Asi N, Undavalli C, Nabhan M, Firwana B, Altayar O, Prokop L, Montori VM, Murad MH
J Clin Endocrinol Metab. 2014 Oct; 99(10)3543-50. doi: 10.1210/jc.2014-2262.

PMID:
    25279572
    [PubMed - indexed for MEDLINE]
Related citations


Clinical review: The benefits and harms of systemic dehydroepiandrosterone (DHEA) in postmenopausal women with normal adrenal function: a systematic review and meta-analysis.
Elraiyah T, Sonbol MB, Wang Z, Khairalseed T, Asi N, Undavalli C, Nabhan M, Altayar O, Prokop L, Montori VM, Murad MH
J Clin Endocrinol Metab. 2014 Oct; 99(10)3536-42. doi: 10.1210/jc.2014-2261.

PMID:
    25279571
    [PubMed - indexed for MEDLINE]
Related citations


Charged particle therapy versus photon therapy for paranasal sinus and nasal cavity malignant diseases: a systematic review and meta-analysis.
Patel SH, Wang Z, Wong WW, Murad MH, Buckey CR, Mohammed K, Alahdab F, Altayar O, Nabhan M, Schild SE, Foote RL
Lancet Oncol. 2014 Aug; 15(9)1027-38. doi: 10.1016/S1470-2045(14)70268-2.

PMID:
    24980873
    [PubMed - indexed for MEDLINE]
Related citations


Comparative systematic review and meta-analysis of compression modalities for the promotion of venous ulcer healing and reducing ulcer recurrence.
Mauck KF, Asi N, Elraiyah TA, Undavalli C, Nabhan M, Altayar O, Sonbol MB, Prokop LJ, Murad MH
J Vasc Surg. 2014 Aug; 60(2 Suppl)71S-90S.e1-2. doi: 10.1016/j.jvs.2014.04.060.

PMID:
    24877851
    [PubMed - indexed for MEDLINE]
Related citations


Systematic review and meta-analysis of surgical interventions versus conservative therapy for venous ulcers.
Mauck KF, Asi N, Undavalli C, Elraiyah TA, Nabhan M, Altayar O, Sonbol MB, Prokop LJ, Murad MH
J Vasc Surg. 2014 Aug; 60(2 Suppl)60S-70S.e1-2. doi: 10.1016/j.jvs.2014.04.059.

PMID:
    24835693
    [PubMed - indexed for MEDLINE]
Related citations


Using GRADE for evaluating the quality of evidence in hyperbaric oxygen therapy clarifies evidence limitations.
Murad MH, Altayar O, Bennett M, Wei JC, Claus PL, Asi N, Prokop LJ, Montori VM, Guyatt GH
J Clin Epidemiol. 2014 Jan; 67(1)65-72. doi: 10.1016/j.jclinepi.2013.08.004.

PMID:
    24189086
    [PubMed - indexed for MEDLINE]
Related citations


Midodrine for orthostatic hypotension: a systematic review and meta-analysis of clinical trials.
Parsaik AK, Singh B, Altayar O, Mascarenhas SS, Singh SK, Erwin PJ, Murad MH
J Gen Intern Med. 2013 Nov; 28(11)1496-503. doi: 10.1007/s11606-013-2520-3.

PMID:
    23775146
    [PubMed - indexed for MEDLINE]
Related citations


Rectal nonsteroidal anti-inflammatory drugs are superior to pancreatic duct stents in preventing pancreatitis after endoscopic retrograde cholangiopancreatography: a network meta-analysis.
Akbar A, Abu Dayyeh BK, Baron TH, Wang Z, Altayar O, Murad MH
Clin Gastroenterol Hepatol. 2013 Jul; 11(7)778-83. doi: 10.1016/j.cgh.2012.12.043.

PMID:
    23376320
    [PubMed - indexed for MEDLINE]
Related citations


Reversible cardiac dysfunction associated with hypocalcemia: a systematic review and meta-analysis of individual patient data.
Newman DB, Fidahussein SS, Kashiwagi DT, Kennel KA, Kashani KB, Wang Z, Altayar O, Murad MH
Heart Fail Rev. 2014 Mar; 19(2)199-205. doi: 10.1007/s10741-013-9371-1.

PMID:
    23355181
    [PubMed - indexed for MEDLINE]
Related citations

Areas of Research Interest

Epidemiology, knowledge synthesis, systematic reviews, meta-analysis, clinical guidelines, big data, prediction models