Dr Patrick A Walsh

Senior Lecturer in Physiology & HCPC Registered Clinical Scientist


I received my B.Sc. in Physiology from University College Cork (1974) followed by an M.Sc. in Medicinal Chemistry from Loughborough University of Technology, Leicestershire, UK (1976) and a Ph.D. in Physiology from the National University of Ireland Galway (1985).

I worked as a Biochemist (Basic Grade) in the Institute of Clinical Pharmacology, St. James’s Hospital, Dublin, for 12 months during the period 1974-75. From 1982-85, I was employed as a Biochemist (Senior Grade) at St. John’s & Barrington’s Hospitals in Limerick. This was followed by 27 years as a faculty member at Athlone Institute of Technology (AIT), with an appointment as a Lecturer in the Biomedical Sciences, and then moved to the Royal College of Surgeons in Ireland – Medical University of Bahrain as Senior Lecturer in Physiology in 2013.

Selected honours include highest score in M.Sc. thesis and recipient of a Research Fellowship from the National University of Ireland Galway (NUIG).

Administrative duties

  • University admission interviews.
  • Examiner of postgraduate students taking the MRCS examination.
  • Member of RCSI examination appeals panel.

Area of Expertise

  • Clinical Biochemistry: analytical methodologies, report interpretation, & QC.
  • Physiology: renal acid-base homeostatic mechanisms.
  • Medicinal Chemistry: investigation of the biological activities of natural products. Drug metabolism & Pharmacokinetics, including animal husbandry, small animal surgical techniques, collection of body fluids, and drug and chemical analysis using HPLC, GLC, and Immunoassay.
  • Medical Education: Development of undergraduate curriculum and assessment methodologies.


  • Walsh, PA. (2022). Infusion of an acidified ethanolic – dextrose solution enhances urinary ammonium excretion and increases acid resilience in non – mechanically ventilated acidotic rabbits. Frontiers in Physiology. In Press.
  • Walsh, PA & O'Donovan DJ. (2020). The kinetics of inorganic phosphate excretion in the acidotic rabbit during intravenous phosphate loading: a pseudo-ruminant model. Sci Rep 10, 3988.
  • Walsh, PA & O’Donovan, DJ. The physiological conundrum of inorganic phosphate stimulation of urinary ammonium excretion in the acidotic rabbit. Physiology 2019 (Aberdeen, UK) Proc. Physiol. Soc. 2019; 43, PC203
  • Walsh, P. & O’Donovan, D.J. An appraisal of the in vivo role of phosphate as a modulator of urinary ammonium and titratable acid excretion in the acidotic rabbit. Journal of Animal Physiology & Animal Nutrition 2019; 103 (5): pp.1571 – 1577. DOI: 10.1111/jpn.13143
  • Iqdam Tobbia, Abdelhaleem Bella, Stephen Safrany, Colin Greengrass, Amnah Al Banna, Nabila Mann-Isah, & Patrick Walsh. Debating the merits and dangers of Complementary and Alternative Medicine. Bahrain Medical Bulletin 2019; 41(2), pp. 65 –66.
  • Walsh, P. Rosemary: potion or poison? J Prim Health Care 2019; 11 (1): pp 82-83. doi:10.1071/HC15940
  • C. Donnellan, N. Redhab, M. Al Bannac, I. Al Sharoqib, A. Al-Jishi, M. Bakhiet, S. Taha, F. Abdulla, & P. Walsh. Associations between ApoE gene and psychological consequences post stroke in a Bahraini cohort. Asian Journal of Psychiatry 2019; 39 pp.135 - 142
  • Walsh P. Echinacea: potion or poison? J Prim Health Care 2018; 10 (3): pp. 280–281.
  • E. Coss, C. Kealey, D. B Brady, & P. A. Walsh. A laboratory investigation of the antimicrobial activity of a selection of western phytomedicinal tinctures. European Journal of Integrative Medicine 2018; 19, pp. 80-83.
  • Donnellan C, Al Banna M, Redha N, Al Jishi A, Al Sharoqi I, Taha S, Bakhiet M, Abdulla F, Walsh P. Predictors of Vascular Cognitive Impairment Post stroke in a Middle Eastern (Bahrain) Cohort: A Proposed Case-Control Comparison. JMIR Res Protoc 2016; 5(4):e223 doi: 10.2196/resprot.5903
  • Walsh, P.A., & O’Donovan, D.J. Collection of untainted urinary specimens from the bladder of an anesthetized rabbit. Lab Animal 2016; 45 (3): pp.112-114 Published online: 17 February 2016; | doi:10.1038/laban.953
  • Walsh, P.A., & O’Donovan, D.J. Potential errors in the determination of urinary ammonium by formol titration Clin Chem Lab Med. 2016; 54(10): e293-5.
    • doi: 10.1515/cclm-2015-1158.