Associate, Veterinary Specialist

Celia M. Marr

BVMS, MVM, PhD, DEIM, DipECEIM, FRCVS

RCVS Recognised Specialist in Equine Internal Medicine
European Veterinary Specialist in Equine Internal Medicine
Responsible for Internal Medicine, Cardiology

Celia joined the team at Rossdales Equine Hospital and Diagnostic Centre in 2003. She is a Specialist in Equine Internal Medicine and works with both inpatients and outpatients with medical problems. She was awarded a Fellowship by the Royal College of Veterinary Surgeons in 2016.

She graduated from the Glasgow University Veterinary School in 1985, then remained in Glasgow to complete both Masters and PhD degrees. She then held a Fulbright Scholarship studying equine cardiology and internal medicine at the New Bolton Center, University of Pennsylvania. Before joining Rossdales, she held positions at the University of Cambridge Veterinary School, Valley Equine Hospital, Lambourn and the Royal Veterinary College.

Her clinical and research interests are in Cardiovascular Medicine, Internal Medicine, Adult and Neonatal Intensive Care & Medical Imaging. She has published over 50 research papers and educational material relating to a range of medical disorders of the horse, concentrating on cardiovascular disease and diagnostic methods in medical disorders including editing a book on Cardiology of the Horse, the 2nd edition of which was published in 2010.

Celia is an Honorary Professor of the University of Glasgow and Editor-in-Chief of Equine Veterinary Journal.

Publications

• Vascular air embolisation and expansile sphenopalatine sinus haematoma secondary to a fracture of the rostral skull in a horse

  Easton-Jones CA, Marr CM, Peter VG, Foote AK

  2021 Equine Vet. Ed. epub: 26 September 2021 https://doi.org/10.1111/eve.13569

• ECG Restitution Analysis and Machine Learning to Detect Paroxysmal Atrial Fibrillation: Insight from the Equine Athlete as a Model for Human Athletes

  Huang YH, Alexeenko V, Tse G, Huang CL-H, Marr CM, Jeevaratnan K

  2021 Function 2 1 https://doi.org/10.1093/function/zqaa031

• The complexity of clinically-normal sinus-rhythm ECGs is decreased in equine athletes with a diagnosis of paroxysmal atrial fibrillation

  Alexeenko V, Fraser JA, Bowen M, Huang CL-H, Marr CM, Jeevaratnam K

  2020 Sci. Rep. 10 1 6822 doi: 10.1038/s41598-020-63343-7. PubMed: 32321950

• Prevalence of acute kidney injury in a population of hospitalized horses

  Savage VL, Marr CM, Bailey M, Smith S

  2019 J Vet Intern Med 33 5 2294-2301 epub: Epub 2019 Aug 22. doi: 10.1111/jvim.15569 PubMed: 31436910

• Cardiac electrophysiological adaptations in the equine athlete-Restitution analysis of electrocardiographic features

  Li M, Chadda KR, Matthews GDK, Marr CM, Huang CL, Jeevaratnam K

  2018 PLoS One 13 3 epub: e0194008 https://doi.org/10.1371/journal.pone.0194008 PubMed: 29522557

• Real-time Three-dimensional (3D) Echocardiographic Characterisation of an Atrial Septal Defect in a horse

  Redpath A, Marr CM, Bullard C, Hallowell GD

  2018 Vet. Medicine and Science 6 6 661-665 https://doi.org/10.1002/vms3.317 PubMed: 32627406

• Exercise‐associated rhythm disturbances in poorly performing Thoroughbreds: risk factors and association with racing performance

  Marr CM, Franklin S, Garrod G, Wylie CE, Smith L, Dukes-McEwen J, Bright J, Allen K

  2020 Equine Vet. J. epub: 26 September 2020 Online ahead of print doi/10.1111/evj.13354 PubMed: 32979227

• Science-in-brief: Risk Assessment for Reducing Injuries of the Fetlock Bones in Thoroughbred Racehorses

  Colgate VA, Carpenter R, Kawcak C, Muir P, Palmer S, Parkin T, Powell SE, Ramzan P, Riggs CM, Spriet M, Stover SM, Whitton C, Marr CM

  2020 Equine Vet J. 52 (4) 482-488 doi: 10.1111/evj.13273. PubMed: 32525619

• The application of Lempel-Ziv and Titchener complexity analysis for equine telemetric electrocardiographic recordings

  Alexeenko V, Fraser JA, Dolgoborodov A, Bowen M, Huang CL, Marr CM, Jeevaratnam K

  2019 Sci. Rep. 9 1 2619 doi: 10.1038/s41598-019-38935- PubMed: 30796330

• Ultrasonographic assessment of the atlanto-occipital space in healthy Thoroughbred foals and Thoroughbred foals with neonatal maladjustment syndrome

  Mackenzie CJ, Haggett EF, Pinchbeck GL, Marr CM

  2017 Vet J. May 223 55-59 epub: Epub 2017 May 2 doi: 10.1016/j.tvjl.2017.04.002 PubMed: 28671073

• Extradural spinal hydatid cyst causing hindlimb ataxia in a horse.

  Peter V, Marr C, Foote A, Auer H, Head M

  2018 Schweiz Arch Tierheilkd. 160 (11) 659-664 doi: 10.17236/sat00183 PubMed: 30379133

• Detection of equine coronavirus in horses in the United Kingdom

  Bryan J, Marr CM, Mackenzie CJ, Mair TS, Fletcher A, Cash R, Phillips M, Pusterla N, Mapes S, Foote AK

  2018 Vet Rec Dec 7 epub: [Epub ahead of print] doi: 10.1136/vr.105098 PubMed: 30530800

• Pneumopericardium associated with blunt thoracic trauma in an adult horse

  Castro Martins M, Bathe AP, Marr CM

  2016 Equine Vet. Edu. Sep 6

• A call for consensus on upper airway terminology

  Barnett TP, Smith LCR, Cheetham J, Barakzai SZ, Southwood L, Marr CM

  2015 Equine Vet J. 47 5 505-7 10.1111/evj.12468 PubMed: 26278066

• The Equine Neonatal Cardiovascular System in Health and Disease

  Marr CM

  2015 Vet Clin North Am Equine Pract 51 3 545-65 epub: Review 10.1016/j.cveq.2015.09.005 PubMed: 26612747

• Indications, complications, and outcome of horses undergoing repeated celiotomy within 14 days after the first colic surgery: 95 cases (2005-2013).

  Dunkel B, Mair T, Marr CM, Carnwath J, Bolt DM

  2015 J Am Vet Med Assoc 246 5 540-6 10.2460/javma.246.5.540 PubMed: 25671287

• The effect of mare obesity and endocrine function on foal birthweight in Thoroughbreds

  Smith S, Marr CM, Dunnett C, Menzies-Gow NJ.

  2016 Equine Vet J epub: Nov 8 [Epub ahead of print] 10.1111/evj.12645 PubMed: 27862248

• Cardiac and Respiratory Disease in Aged Horses

  Marr CM

  2016 Vet Clin North Am Equine Pract 32 2 283-300 epub: Review 10.1016/j.cveq.2016.04.006 PubMed: 27329492

• Epidemiological study of pasture-associated laminitis and concurrent risk factors in the South of England

  Menzies-Gow NJ, Katz LM, Barker KJ, Elliott J, De Brauwere MN, Jarvis N, Marr CM, Pfeiffer DU

  2010 Vet Rec 167 18 690-4 PubMed: 21257484

• Equine echocardiography–sound advice at the heart of the matter

  Marr CM

  1994 Br Vet J 150 6 527-45 PubMed: 7850443

• An echocardiographic study of atrial fibrillation in horses: before and after conversion to sinus rhythm

  Marr CM, Reef VB, Reimer JM, Sweeney RW, Reid SW

  1995 J Vet Intern Med 9 5 336-40 PubMed: 8531180

• Physiological valvular regurgitation in clinically normal young racehorses: prevalence and two-dimensional colour flow Doppler echocardiographic characteristics

  Marr CM, Reef VB

  1995 Equine Vet J Suppl 19 56-62 PubMed: 8933070

• Partial mandibular condylectomy and temporal bone resection for chronic, destructive, septic arthritis of the temporomandibular joint in a horse

  Barnett TP, Powell SE, 1009, Marr CM, Steven WN, Payne RJ

  2014 Equine Vet Ed 26 2 59-63

• Clinical observations made in nonheat acclimated horses performing treadmill exercise in cool (20 degrees C/40%RH), hot, dry (30 degrees C/40%RH) or hot, humid (30 degrees C/80%RH) conditions

  Harris PA, Marlin DJ, Mills PC, Roberts CA, Scott CM, Harris RC, Orme CE, Schroter RC, Marr CM, Barrelet FE

  1995 Equine Vet J Suppl 20 78-84 PubMed: 8933089

• Electrolyte and total protein changes in nonheat acclimated horses performing treadmill exercise in cool (20 degrees C/40%RH), hot, dry (30 degrees C/40%RH) or hot, humid (30 degrees C/80%RH) conditions

  Harris PA, Marlin DJ, Scott CM, Harris RC, Mills PC, Michell AR, Orme CE, Roberts CA, Schroter RC, Marr CM, et al

  1995 Equine Vet J Suppl 20 85-96 PubMed: 8933090

• Physiological responses in nonheat acclimated horses performing treadmill exercise in cool (20 degrees C/40% RH), hot dry (30 degrees C/40% RH) and hot humid (30 degrees C/80% RH) conditions

  Marlin DJ, Scott CM, Schroter RC, Mills PC, Harris RC, Harris PA, Orme CE, Roberts CA, Marr CM, Dyson SJ, Barrelet FE

  1996 Equine Vet J Suppl 22 70-84 PubMed: 8894553

• Aorto-cardiac fistulas in seven horses

  Marr CM, Reef VB, Brazil TJ, Thomas WP, Knottenbelt DC, Kelly DF, Baker JR, Reimer JM, Maxson AD, Crowhurst JS

  1998 Vet Radiol Ultrasound 39 1 22-31 PubMed: 9491514

• Thoracic oesophageal abscess in a pony

  Freeman SL, Bowen IM, Marr CM

  1998 Vet Rec 142 25 699-700 PubMed: 9670460

• The use of scintigraphy in the diagnosis of aortic-iliac thrombosis in a horse

  Boswell JC, Marr CM, Cauvin ER, Schramme MC

  1999 Equine Vet J 31 6 537-41 PubMed: 10596939

• Pneumocephalus in five horses.

  Dunkel B, Corley KT, Johnson AL, Witte TH, Leitch M, Marr CM, Weller R

  2012 Equine Vet J 7 epub: Epub ahead of print PubMed: 23094967

• Pre- and post exercise echocardiography in horses performing treadmill exercise in cool and hot/humid conditions

  Marr CM, Bright JM, Marlin DJ, Harris PA, Roberts CA

  1999 Equine Vet J Suppl 30 131-136 PubMed: 10659237

• Retrospective study of the relationships between age, inflammation and the isolation of bacteria from the lower respiratory tract of thoroughbred horses

  Chapman PS, Green C, Main JP, Taylor PM, Cunningham FM, Cook AJ, Marr CM

  2000 Vet Rec 146 4 91-5 PubMed: 10682693

• Functional and histopathological evidence of cardiac parasympathetic dysautonomia in equine grass sickness

  Perkins JD, Bowen IM, Else RW, Marr CM, Mayhew IG

  2000 Vet Rec 146 9 246-50 PubMed: 10737294

• Repeatability of diagnostic ultrasonography in the assessment of the equine superficial digital flexor tendon

  Pickersgill CH, Marr CM, Reid SW

  2001 Equine Vet J 33 1 33-7 PubMed: 11191607

• Understanding the pathophysiology is the key to novel therapies for canine dilated cardiomyopathy

  Elliott J, Marr CM

  2001 Vet J 162 3 168-9 PubMed: 11681866

• Density and binding characteristics of beta-adrenoceptors in the normal and failing equine myocardium

  Horn J, Bailey S, Berhane Y, Marr CM, Elliott J

  2002 Equine Vet J 34 4 411-6 PubMed: 12117116

• Identification and quantification of amines in the equine caecum

  Bailey SR, Marr CM, Elliott J

  2003 Res Vet Sci 74 2 113-8 PubMed: 12589734

• Defining the clinically relevant questions that lead to the best evidence: what is evidence-based medicine?

  Marr CM

  2003 Equine Vet J 35 4 333-6 PubMed: 12879997

• Seasonal changes in plasma concentrations of cecum-derived amines in clinically normal ponies and ponies predisposed to laminitis

  Bailey SR, Katz LM, Berhane Y, Samuels T, De Brauvere N, Marr CM, Elliott J

  2003 Am J Vet Res 64 9 1132-8 PubMed: 13677391

• Development and application of a scoring system for prognostic evaluation of equine liver biopsies

  Durham AE, Smitht KC, Newton JR, Hillyer MH, Hillyer LL, Smith MR, Marr CM

  2003 Equine Vet J 35 6 534-40 PubMed: 14515951

• Retrospective analysis of historical, clinical, ultrasonographic, serum biochemical and haematological data in prognostic evaluation of equine liver disease

  Durham AE, Newton JR, Smith KC, Hillyer MH, Hillyer LL, Smith MR, Marr CM

  2003 Equine Vet J 35 6 542-7 PubMed: 14515952

• Equine hepatic disease: the effect of patient- and case-specific variables on risk and prognosis

  Smith MR, Stevens KB, Durham AE, Marr CM

  2003 Equine Vet J 35 6 549-52 PubMed: 14515953

• Use of nuclear scintigraphy with 99mTc-HMPAO-labelled leucocytes to assess small intestinal malabsorption in 17 horses

  Menzies-Gow NJ, Weller R, Bowen IM, Corley KT, Livesey L, Weaver M, Marr CM

  2003 Vet Rec 153 15 457-62 PubMed: 14584575

• The impact of birthweight on mare health and reproductive efficiency, and foal health and subsequent racing performance

  Whittaker S, Sullivan S, Auen S, Parkin TD, Marr CM

  2012 Equine Vet J Suppl 44 26-Sep PubMed: 22594022

• Characterization and comparison of the responses of equine digital arteries and veins to endothelin-1

  Katz LM, Marr CM, Elliott J

  2003 Am J Vet Res 64 11 1438-43 PubMed: 14620782

• Characterisation of the response of equine digital arteries and veins to substance P

  Katz LM, Marr CM, Elliott J

  2003 J Vet Pharmacol Ther 26 5 361-8 PubMed: 14633189

• Repeatability and reproducibility of the Obel grading system for equine laminitis

  Menzies-Gow NJ, Stevens KB, Sepulveda MF, Jarvis N, Marr CM

  2010 Vet Rec 167 2 52-5 PubMed: 20622203

• Current research and theories on the pathogenesis of acute laminitis in the horse

  Bailey SR, Marr CM, Elliott J

  2004 Vet J 167 2 129-42 PubMed: 14975387

• Pelvic vascular prospects for uterine transplantation

  Sieunarine K, Boyle DC, Corless DJ, Noakes DE, Ungar L, Marr CM, Lindsay I, Del Priore G, Smith JR

  2006 Int Surg. 91 4 217-22 PubMed: 16967683

• Cardiac emergencies and problems of the critical care patient

  Marr CM

  2004 Vet Clin North Am Equine Pract 20 1 217-30 PubMed: 15062466

• Clinical, ultrasonographic and pathological findings in a horse with splenic lymphosarcoma and pseudohyperparathyroidism

  Marr CM, Love S, Pirie HM

  1989 Equine Vet J 21 3 221-6 PubMed: 2659317

• The effects of vasoactive amines found in the equine hindgut on digital blood flow in the normal horse

  Bailey SR, Menzies-Gow NJ, Marr CM, Elliott J

  2004 Equine Vet J 36 3 267-72 PubMed: 15147136

• Confirmation by Doppler echocardiography of valvular regurgitation in a horse with a ruptured chorda tendinea of the mitral valve

  Marr CM, Love S, Pirie HM, Northridge DB

  1990 Vet Rec 127 15 376-9 PubMed: 2260252

• Endotoxin-induced digital vasoconstriction in horses: associated changes in plasma concentrations of vasoconstrictor mediators

  Menzies-Gow NJ, Bailey SR, Katz LM, Marr CM, Elliott J

  2004 Equine Vet J 36 3 273-8 PubMed: 15147137

• Retrospective study of neurological signs and management of seven English horses with temporohyoid osteoarthropathy

  Palus V, Bladon B, Brazil T, Cherubini GB, Powell SE, Greet TRC, Marr CM

  2011 Equine Vet Educ epub: Epub ahead of print

• ECG of the month

  Marr CM, Reef VB

  1991 J Am Vet Med Assoc 198 9 1533-4 PubMed: 2061175

• What is the likelihood that Thoroughbred foals treated for septic arthritis will race?

  Smith LJ, Marr CM, Payne RJ, Stoneham SJ, Reid SW

  2004 Equine Vet J 36 5 452-6 PubMed: 15253089

• Aortic valvular dysplasia in a calf

  Watson TD, Marr CM, McCandlish IA

  1991 Vet Rec 129 17 380-2 PubMed: 1746115

• In-vitro contraction of the equine aortic valve

  Bowen IM, Marr CM, Chester AH, Wheeler-Jones CP, Elliott J

  2004 J Heart Valve Dis 13 4 593-9 PubMed: 15311865

• Microwave thermography: a non-invasive technique for investigation of injury of the superficial digital flexor tendon in the horse

  Marr CM

  1992 Equine Vet J 24 4 269-73 PubMed: 1499533

• Advances in equine ultrasonography

  Marr CM

  2001 Vet Clin North Am Equine Pract 17 2 305-17, vii PubMed: 15658178

• Demonstration of regional differences in equine ventricular myocardial velocity in normal 2-year-old Thoroughbreds with Doppler tissue imaging

  Sepulveda MF, Perkins JD, Bowen IM, Marr CM

  2005 Equine Vet J 37 3 222-6 PubMed: 15892230

• Idiopathic, aseptic, effusive, fibrinous, nonconstrictive pericarditis with tamponade in a standardbred filly

  Robinson JA, Marr CM, Reef VB, Sweeney RW

  1992 J Am Vet Med Assoc 201 10 1593-8 PubMed: 1289343

• Digital blood flow and plasma endothelin concentration in clinically endotoxemic horses

  Menzies-Gow NJ, Bailey SR, Stevens K, Katz L, Elliott J, Marr CM

  2005 Am J Vet Res 66 4 630-6 PubMed: 15900943

• Ultrasonographic and histopathological findings in equine superficial digital flexor tendon injury

  Marr CM, McMillan I, Boyd JS, Wright NG, Murray M

  1993 Equine Vet J 25 1 23-Sep PubMed: 8422880

• Severity and outcome of equine pasture-associated laminitis managed in first opinion practice in the UK

  Menzies-Gow NJ, Stevens K, Barr A, Camm I, Pfeiffer D, Marr CM

  2010 Vet Rec 167 10 364-9 PubMed: 20817896

• Characterization of the responses of equine digital veins and arteries to calcitonin gene-related peptide.

  Katz LM, Marr CM, Elliott J.nn.

  2011 Am J Vet Res 72 7 975-81 PubMed: 21728859

• Factors affecting the clinical outcome of injuries to the superficial digital flexor tendon in National Hunt and point-to-point racehorses

  Marr CM, Love S, Boyd JS, McKellar Q

  1993 Vet Rec 132 19 476-9 PubMed: 8506599

• What is the likelihood that a horse treated for septic digital tenosynovitis will return to its previous level of athletic function?

  Smith LJ, Mellor DJ, Marr CM, Mair TS

  2006 Equine Vet J 38 4 337-41 PubMed: 16866201

• Aortic origin of the right pulmonary artery and patent ductus arteriosus in a pony foal with pulmonary hypertension and right-sided heart failure

  Reimer JM, Marr CM, Reef VB, Saik JE

  1993 Equine Vet J 25 5 466-8 PubMed: 8223383

• Platelets in equine recurrent airway obstruction

  Hammond A, Bailey SR, Marr CM, Cunningham FM

  2007 Res Vet Sci 82 3 332-4 PubMed: 17107696

• Intraoperator, intraobserver and interoperator variability of echocardiographic measurements in healthy foals

  Slack J, Durandot MM, Belcher CN, Collins N, Palmer L, Ousey J, Birks EK, Marr CM

  2012 Equine Vet J Suppl 44 69-75 PubMed: 22594030

• Two-dimensional and M-mode echocardiographic findings in healthy Thoroughbred foals.

  Collins NM, Palmer L, Marr CM

  2010 Aust Vet J 88 11 428-33 PubMed: 20958282

• Repeatability of Doppler ultrasonographic measurement of equine digital blood flow

  Menzies-Gow NJ, Marr CM

  2007 Vet Radiol Ultrasound 48 3 281-5 PubMed: 17508518

• Incisional complications following exploratory celiotomy: does an abdominal bandage reduce the risk?

  Smith LJ, Mellor DJ, Marr CM, Reid SW, Mair TS

  2007 Equine Vet J 39 3 277-83 PubMed: 17520982

• Multinodular pulmonary fibrosis in five horses

  Wong DM, Belgrave RL, Williams KJ, Del Piero F, Alcott CJ, Bolin SR, Marr CM, Nolen-Walston R, Myers RK, Wilkins PA

  2008 J Am Vet Med Assoc 232 6 898-905 PubMed: 18341449

• Novel oblique radiographic projection of the temporomandibular articulation of horses

  Ramzan PHL, Marr CM, Meehan J, Thompson A

  2008 Vet Rec 162 22 714-6 PubMed: 18515758

• Effect of left-sided valvular regurgitation on mortality and causes of death among a population of middle-aged and older horses

  Stevens KB, Marr CM, Horn JN, Pfeiffer DU, Perkins JD, Bowen IM, Allan EJ, Campbell J, Elliott J

  2009 Vet Rec 164 1 06-Oct PubMed: 19122214

• European outbreak of atypical myopathy in the autumn 2009.

  Van Galen, G, Amory, H, Busschers, E, Cassart, D, De Bruijn, M, Gerber, V, Keen, J. Lefere, L, Marcillaud Pitel, C, Marr CM, Muller, J-M, Pineau, X, Saegarman, C, Sanderson, C, Serteyb, D, Torfs, S, Unger, L, Verwilghen, D, Votion, D-M.

  2010 J. Vet. Emerg. Crit. Care 20 5 528-532

• Survey of cardiac arrhythmias during submaximal and maximal exercise in Thoroughbred racehorses

  Ryan N, Marr CM, McGladdery AJ

  2005 Equine Vet J 37 3 265-8 PubMed: 15892238