THE EDITOR

JEAN-PIERRE LAVOIE, DVM, DACVIM, is a full professor in Equine Internal Medicine and Associate Dean of Research at the Faculté de Médecine Vétérinaire at the University of Montreal in St-Hyacinthe, Quebec, Canada and an adjunct professor at the Department of Medicine at McGill University in Montreal, Quebec, Canada.

Abdominal Distention in the Adult Horse 1

Abdominal Hernia in Adult Horses* 4

Abdominocentesis-Increased Peritoneal Fluid 5

Abnormal Estrus Intervals 7

Abnormal Scrotal Enlargement 9

Abnormal Testicular Size 11

Abortion, Spontaneous, Infectious 13

Abortion, Spontaneous, Noninfectious 16

Acer rubrum (Red Maple) Toxicosis 19

Acidosis, Metabolic 20

Acidosis, Respiratory 22

Actinobacillosis 24

Acute Adult Abdominal Pain-Acute Colic 25

Acute Epiglottiditis 27

Acute Hepatitis in Adult Horses (Theiler Disease)* 28

Acute Kidney Injury (AKI) and Acute Renal Failure (ARF) 30

Acute-Phase Response 32

Adenovirus 33

Adrenal Insufficiency* 34

Aflatoxicosis 35

African Horse Sickness 36

Agalactia/Hypogalactia 37

Aggression 39

Alkaline Phosphatase (ALP) 42

Alkalosis, Metabolic 44

Alkalosis, Respiratory 45

Alopecia 46

Amitraz Toxicosis 49

Ammonia, Hyperammonemia 50

Amylase, Lipase, and Trypsin 52

Anaerobic Bacterial Infections 53

Anaphylaxis 55

Anemia 57

Anemia, Chronic Disease 59

Anemia, Heinz Body 60

Anemia, Immune Mediated* 62

Anemia, Iron Deficiency 64

Anestrus 65

Angular Limb Deformity 67

Anhidrosis 69

Anorexia and Decreased Food Intake* 70

Anthrax 72

Anticoagulant Rodenticide Toxicosis 73

Anuria/Oliguria 74

Aortic Regurgitation 76

Aortic Rupture 78

Aortoiliac Thrombosis 81

Arsenic Toxicosis 82

Artificial Insemination 83

Arytenoid Chondropathy 86

Ascarid Infestation 88

Aspartate Aminotransferase (AST) 89

Aspiration Pneumonia 91

Atheroma of the False Nostril 92

Atopic Dermatitis* 93

Atrial Fibrillation 96

Atrial Septal Defect 99

Atypical Myopathy 101

Aural Plaques 102

Azotemia and Uremia 103

Back Pain 105

Bacteremia/Sepsis 106

Bacterial Dermatitis-Methicillin-Resistant Staphylococci 108

Bile Acids 110

Bilirubin (Hyperbilirubinemia) 111

Biosecurity, Disinfectants in the Breeding Shed 113

Blood and Plasma Transfusion Reactions 115

Blood Culture 117

Blue-Green Algae 119

Bordetella bronchiseptica 120

Botulism 121

Bradyarrhythmias 123

Broad Ligament Hematoma 124

Brucellosis 125

Bruxism 126

Burdock Pappus Bristle Keratopathy 128

Calcific Band Keratopathy 129

Calcium, Hypercalcemia 130

Calcium, Hypocalcemia 132

Cantharidin Toxicosis 134

Cardiotoxic Plants 136

Castration, Henderson Castration Instrument 138

Castration, Routine 139

Centaurea and Acroptilon Toxicosis 140

Cerebellar Abiotrophy 141

Cervical Lesions 142

Cervical Vertebral Malformation 145

Cestrum diurnum Toxicosis* 146

Chloride, Hyperchloremia 147

Chloride, Hypochloremia 148

Cholelithiasis* 149

Chorioretinitis 150

Chronic Diarrhea* 151

Chronic Kidney Disease 153

Chronic Progressive Lymphedema 155

Chronic Weight Loss 156

Cleft Palate 157

Clitoral Enlargement 158

Clostridial Myositis 159

Clostridium difficile Infection 161

Coagulation Defects, Acquired 163

Coagulation Defects, Inherited 165

Coccidioidomycosis* 166

Coccidiosis 167

Colic, Chronic/Recurrent 168

Colic in Foals 170

Complex Congenital Cardiac Disease 173

Conception Failure in Mares 175

Congenital Cardiac Abnormalities* 178

Conium maculatum (Poison Hemlock) Toxicosis 180

Conjunctival Diseases 181

Contagious Equine Metritis (CEM) 183

Corneal/Scleral Lacerations 185

Corneal Stromal Abscesses 186

Corneal Ulceration 187

Corynebacterium pseudotuberculosis* 189

Cough, Acute/Chronic 191

Creatine Kinase (CK) 193

Cryptorchidism 195

Cryptosporidiosis 197

Cutaneous Photosensitization* 198

Cyanide Toxicosis 200

Cyathostominosis* 201

Cytology of Bronchoalveolar Lavage (BAL) Fluid 203

Cytology of Pleural Fluid 204

Cytology of Tracheal Aspiration (TA) Fluid 205

Dacryocystitis 207

Delayed Uterine Involution 209

Dermatomycoses, Subcutaneous (SC) 210

Dermatomycoses, Superficial 213

Dermatophilosis 215

Diaphragmatic Hernia 216

Diarrhea, Neonate 217

Dicoumarol (Moldy Sweet Clover) Toxicosis 219

Diseases of the Equine Nictitans 220

Disorders of Sexual Development 222

Disorders of the Thyroid, Hypo- and Hyperthyroidism 224

Disseminated Intravascular Coagulation 226

Distal and Proximal Interphalangeal Joint Disease 228

Distal Tarsitis 229

Dorsal Displacement of the Soft Palate (DDSP) 230

Dorsal Metacarpal Bone Disease 231

Dourine 232

Duodenitis-Proximal Jejunitis (Anterior Enteritis, Proximal Enteritis) 234

Dynamic Collapse of the Upper Airways 236

Dystocia 238

Ear Tick-Associated Muscle Cramping 240

Early Embryonic Death 241

Eastern (EEE), Western (WEE), and Venezuelan (VEE) Equine Encephalitides 243

Eclampsia 245

Ectoparasites 246

Embryo Transfer 248

Endocarditis, Infective 250

Endometrial Biopsy 252

Endometritis 254

Endotoxemia 258

Enterolithiasis 260

Eosinophilia and Basophilia 262

Eosinophilic Enteritis 263

Eosinophilic Keratitis 265

Epiglottic Entrapment 266

Equine Asthma 267

Equine Coronavirus* 268

Equine Granulocytic Anaplasmosis 269

Equine Herpesvirus 5 271

Equine Herpesvirus Myeloencephalopathy 272

Equine Metabolic Syndrome (EMS)/Insulin Dysregulation (ID) 273

Equine Motor Neuron Disease 275

Equine Odontoclastic Tooth Resorption and Hypercementosis 277

Equine Oocytes and Intracytoplasmic Sperm Injection (ICSI)* 279

Equine Protozoal Myeloencephalitis (EPM) 281

Equine Recurrent Uveitis 284

Equine Sarcoidosis 286

Esophageal Obstruction (Choke) 287

Excessive Maternal Behavior/Foal Stealing 289

Exercise-Associated Arrhythmias 290

Exercise-Induced Pulmonary Hemorrhage (EIPH)* 291

Exercise Intolerance in Sport Horses 292

Exertional Rhabdomyolysis 294

Expiratory Dyspnea 296

Exudative Optic Neuropathy 298

Eyelid Diseases 299

Failure of Transfer of Passive Immunity (FTPI) 301

Fear 303

Fescue Toxicosis 306

Fetal Stress/Distress/Viability 308

Fever 311

Flexural Limb Deformity 315

Fluid Therapy, Neonate 317

Foal Immunodeficiency Syndrome 319

Fractures in Endurance Horses 320

Fumonisins* 322

Fungal Pneumonia 324

Fusaria* 325

Gamma-Glutamyltransferase (GGT) 326

Gastric Dilation/Distention 328

Gastric Impaction 330

Gastric Neoplasia 332

Gastric Ulcers and Erosions (Equine Gastric Ulcer Syndrome, EGUS) 333

Gastric Ulcers, Neonate 335

Getah Virus Infection* 337

Glanders* 338

Glaucoma 339

Glucose, Hyperglycemia 341

Glucose, Hypoglycemia 343

Glucose Tolerance Tests 344

Glycogen Branching Enzyme Deficiency 346

Goiter 347

Granulomatous Enteritis 348

Grass Sickness* 349

Guttural Pouch Empyema 351

Guttural Pouch Mycosis 352

Guttural Pouch Tympany 353

Headshaking 354

Head Trauma 355

Heaves (Severe Equine Asthma, RAO) 357

Hemangiosarcoma 359

Hemorrhage, Acute 360

Hemorrhage, Chronic 362

Hemorrhagic Nasal Discharge 363

Hemospermia 364

Hendra Virus 365

Hepatic Abscess and Septic Cholangiohepatitis 366

Hepatic Encephalopathy 368

Hereditary Equine Regional Dermal Asthenia 369

Hernias (Umbilical and Inguinal) 370

Herpesvirus 3 372

Herpesvirus Types 1 and 4 373

High-Risk Pregnancy 375

Hydrocephalus 379

Hydrops Allantois/Amnion 380

Hyperkalemic Periodic Paralysis 382

Hyperlipidemia/Hyperlipemia 384

Hyperthermia* 386

Hypoxemia 388

Icterus (Prehepatic, Hepatic, Posthepatic) 390

Idiopathic Colitis/Typhlitis* 392

Ileal Hypertrophy 394

Ileus 395

Immune-Mediated Keratitis 397

Immunoglobulin Deficiencies 399

Immunosuppression 401

Impaction 403

Infectious Anemia (EIA) 405

Infectious Arthritis (Nonhematogenous) 407

Inflammatory Airway Disease-IAD in Performing Horses (Mild and Moderate Equine Asthma) 409

Influenza* 411

Insect Hypersensitivity 413

Inspiratory Dyspnea 415

Insulin Levels/Insulin Tolerance Test 417

Internal Abdominal Abscesses 419

Intestinal Absorption Tests 421

Intra-abdominal Hemorrhage in Horses* 423

Intracarotid Injections 425

Ionophore Toxicosis 426

Iris Prolapse 428

Iron Toxicosis 429

Ischemic Optic Neuropathy 430

Isocoma pluriflora Toxicosis* 431

Juglans nigra (Black Walnut) Toxicosis 432

Laminitis 433

Lantana camara Toxicosis* 436

Large Colon Torsion* 437

Large Ovary Syndrome 439

Laryngeal Hemiparesis/Hemiplegia (Recurrent Laryngeal Neuropathy) 442

Lavender Foal Syndrome 444

Lawsonia Intracellularis Infections in Foals 445

Lead (Pb) Toxicosis 446

Learning, Training, and Behavior Problems 448

Lens Opacities/Cataracts 451

Leptospirosis 453

Lethal White Foal Syndrome 455

Leukocytoclastic...