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Advances in Laminitis, Part I, An Issue of Veterinary Clinics: Equine Practice - E-Book

Advances in Laminitis, Part I, An Issue of Veterinary Clinics: Equine Practice - E-Book

Christopher C. Pollitt

(2010)

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Book Details

Abstract

Articles include: The Anatomy and Physiology of the Lamellar, Dermal-Epidermal Interface, Carbohydrate Alimentary Overload Laminitis, Events in the Hindgut, Therapeutic Hypothermia (cryotherapy) to Prevent and Treat Acute Laminitis, Acute Laminits: Supportive Medical Therapy, First Aid for the Foot: Therapeutic and Mechanical Support, Serial Venography after Carbohydrate-Induced Laminitis, Venography and Its Clinical Application in North America, Chronic Laminitis: Strategic Hoof Wall Resection, The Laminar Wedge of Chronic Laminitis, Lysis of the Distal Phalanx in Chronic Laminitis, Chronic Laminitis Foot Support: Clogs, Homecare for the Chronic Laminitis Case, The Pharmacological Basis for the Treatment of Developmental and Acute Laminitis, and Black Walnut Extract Laminitis: An Inflammatory Model.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Contributors iii
Contents vii
Preface xv
Chapter 1. A Historical Perspective of Laminitis 1
ANCIENT HISTORY 1
ROMAN EMPIRE (27 BC TO 500 AD) 2
DARK AGES (500 TO 900) 2
HIGH MIDDLE AGES (900 TO 1450) 2
AGE OF DISCOVERY (1450 TO 1700) 3
MODERN ERA (1700 TO 1949) 3
POSTMODERN (1949 TO PRESENT) 6
REFERENCES 7
Chapter 2. 80 Causes, Predispositions, and Pathways of Laminitis 13
REFERENCES 16
Chapter 3. Laminitis Treatment: A Personal Memoir 21
Chapter 4. The Anatomy and Physiology of the Suspensory Apparatus of the Distal Phalanx 29
HOOF WALL GROWTH 30
HOOF WALL TUBULES 33
THE CORIUM 35
THE CORONET CORIUM 36
THE SOLE CORIUM 37
THE BLOOD SUPPLY OF THE FOOT 37
THE INNER HOOF WALL 41
THE DERMAL MICROCIRCULATION 41
SECONDARY EPIDERMAL LAMELLAE 41
THE BM 44
HDS 45
LAMELLAR REMODELING ENZYMES 47
REFERENCES 47
Chapter 5. Overview of Current Laminitis Research 51
CHARACTERIZATION OF LESIONS 52
INFLAMMATION 53
ENZYMATIC DYSREGULATION 56
METABOLIC SYNDROME 57
ALTERATION OF ENDOTHELIAL AND VENOUS FUNCTION 58
SUMMARY 59
REFERENCES 59
Chapter 6. Carbohydrate Alimentary Overload Laminitis 65
ALIMENTARY CARBOHYDRATE OVERLOAD MODEL 66
LAMINITIS HISTOPATHOOGY 68
GRADE 1 LAMINITIS HISTOPATHOLOGY 69
GRADE 2 LAMINITIS HISTOPATHOLOGY 71
GRADE 3 LAMINITIS HISTOPATHOLOGY 71
SUMMARY 76
REFERENCES 76
Chapter 7. Microbial Events in the Hindgut During Carbohydrate-induced Equine Laminitis 79
THE DEVELOPMENT OF EXPERIMENTAL MODELS FOR INDUCING EQUINE LAMINITIS 80
TRADITIONAL MICROBIOLOGICAL STUDIES OF THE EQUINE HINDGUT MICROBIOME DURING LAMINITIS DEVELOPMENT 82
MODERN MOLECULAR MICROBIAL ECOLOGY TOOLS AND THEIR APPLICATION TO LAMINITIS 86
SUMMARY 90
REFERENCES 91
Chapter 8. Black Walnut Extract: An Inflammatory Model 95
SUMMARY 99
REFERENCES 99
Chapter 9. Acute Laminitis: Medical and Supportive Therapy 103
INITIAL ASSESSMENT OF THE HORSE WITH ACUTE LAMINITIS 104
INITIAL TREATMENT OF THE HORSE WITH ACUTE LAMINITIS 106
MONITORING PROGRESSION AND FURTHER MANAGEMENT 109
SUMMARY 111
REFERENCES 112
Chapter 10.The Pharmacologic Basis for the Treatment of Developmental and Acute Laminitis 115
EVENTS OCCURRING IN THE DEVELOPMENTAL AND ACUTE STAGES AT WHICH PHARMACOLOGIC THERAPY IS AIMED 116
ENDOTOXEMIA/SIRS 116
POLYMYXIN B 117
HYPERIMMUNE SERUM AGAINST COMPONENTS OF ENDOTOXIN 117
NONSTEROIDAL ANTIINFLAMMATORY DRUGS 117
DYSREGULATION OF LAMINAR MICROVASCULAR BLOOD FLOW 117
PLATELET ACTIVATION/THROMBOSIS 118
BREAKDOWN OF THE LAMINAR BASEMENT MEMBRANE 118
INFLAMMATORY INJURY TO THE LAMINAE 119
NSAIDS 119
INTRAVENOUS LIDOCAINE 120
DISTAL LIMB CRYOTHERAPY 120
PTX 120
FUTURE THERAPIES 121
REFERENCES 121
Chapter 11. Therapeutic Hypothermia (Cryotherapy) to Prevent and Treat Acute Laminitis 125
THE EFFECTS OF HYPOTHERMIA ON TISSUE 126
THERAPEUTIC HYPOTHERMIA OF THE EQUINE DISTAL LIMB 127
USING DIGITAL HYPOTHERMIA TO HELP PREVENT LAMINITIS 128
USING DIGITAL HYPOTHERMIA FOR THE TREATMENT OF ACUTE LAMINITIS 130
REFERENCES 130
Chapter 12. Progression of Venographic Changes After Experimentally Induced Laminitis 135
VENOGRAPHIC TECHNIQUE 136
VENOGRAPHY OF CONTROL (NORMAL) FEET BEFORE OF DOSING 136
VENOGRAPHY 48 HOURS AFTER OF DOSING 137
VENOGRAPHY 7 DAYS AFTER OF DOSING 138
VENOGRAPHY 6 WEEKS AFTER OF DOSING 138
SUMMARY 140
ACKNOWLEDGMENTS 140
REFERENCES 140
Chapter 13. Clinical Presentation, Diagnosis, and Prognosis of Chronic Laminitis in North America 141
CLINICAL PRESENTATION 141
DIAGNOSIS 147
PROGNOSIS 151
SUMMARY 152
REFERENCES 152
Chapter 14. Pathology of the Distal Phalanx in Equine Laminitis: More Than Just Skin Deep 155
ARCHITECTURE OF THE DISTAL PHALANX 156
BONE MICROENVIRONMENT 159
OSTEOIMMUNOLOGY AND INFLAMMATION-INDUCED BONE MODELING 160
BIOMECHANICALLY INDUCED BONE MODELING 162
SUMMARY 162
REFERENCES 163
Chapter 15. Equine Venography and Its Clinical Application in North America 167
PERFORMING THE VENOGRAM 167
THE 6 AREAS OF INTEREST OF THE NORMAL VENOGRAM 170
INTERPRETATION 170
CLINICAL APPLICATION 172
ACKNOWLEDGMENTS 176
REFERENCES 176
Chapter 16. The Lamellar Wedge 179
OVERVIEW 179
PATHOGENESIS OF THE LAMELLAR WEDGE 179
TEMPORAL DEVELOPMENT OF THE LAMELLAR WEDGE 187
HIDDEN DANGERS: PATHOLOGIC CONSEQUENCES OF DP DISLOCATION 189
THE LAMELLAR WEDGE IN THE PASTURE-INDUCED LAMINITIC HORSE 193
SUSCEPTIBILITY TO ONYCHOMYCOSIS 193
SUMMARY 193
REFERENCES 194
Chapter 17. Chronic Laminitis: Strategic Hoof Wal l Resection 197
PERFORMING THE WALL RESECTION 198
AFTERCARE 202
COMPLICATIONS 203
COMPLETE WALL RESECTION WITH DISTAL DISPLACEMENT 204
ACKNOWLEDGMENTS 204
REFERENCES 204
Chapter 18. The Use of the Wooden Shoe (Steward Clog) in Treating Laminitis 207
REFERENCES 214
Chapter 19. Home Care for Horses with Chronic Laminitis 215
PAIN MANAGEMENT 215
CONCURRENT MEDICAL ISSUES 217
NUTRITION 217
REHABILITATION 219
NURSING CARE 220
HOUSING AND FOOTING 220
HOOF CARE 221
ENSURING OWNER COMPLIANCE 222
REFERENCES 222
Index 225