BOOK
Fluid and Electrolyte Therapy, An Issue of Veterinary Clinics of North America: Food Animal Practice, E-Book
(2014)
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Book Details
Abstract
Fluid and Electrolyte Therapy, An Issue of Veterinary Clinics of North America: Food Animal Practice, E-Book
Table of Contents
Section Title | Page | Action | Price |
---|---|---|---|
Front Cover | Cover | ||
Fluid and Electrolyte Therapy\r | i | ||
Copyright\r | ii | ||
Contributors | iii | ||
Contents | v | ||
Veterinary Clinics Of North America: Food Animal Practice\r | viii | ||
Fluid and Electrolyte Therapy | ix | ||
Acid-Base Assessment | 295 | ||
Key points | 295 | ||
The Henderson-Hasselbalch equation | 296 | ||
The strong ion difference approach | 298 | ||
Three anomalies of the Henderson-Hasselbalch equation | 302 | ||
Failure to Explain Why an Abnormal Plasma Protein Concentration Changes Plasma pH | 302 | ||
Failure to Explain Why Ingestion of CaCl2 Is Acidifying | 302 | ||
Failure to Explain Why the Rapid Intravenous Administration of Large Volume 0.9% NaCl Solution Is Acidifying | 303 | ||
Application of strong ion difference theory to calves with diarrhea | 305 | ||
Collection of blood samples to evaluate acid-base status | 306 | ||
Measurement of total CO2 | 307 | ||
Quantifying the unmeasured anion concentration | 307 | ||
Anion Gap | 307 | ||
Strong Ion Gap | 308 | ||
Urine pH and acid-base balance | 308 | ||
Summary | 309 | ||
References | 309 | ||
Appendix 1 | 313 | ||
d-Lactic Acidosis in Neonatal Ruminants | 317 | ||
Key points | 317 | ||
Metabolism of d-lactate | 318 | ||
Origin of d-lactate in neonatal ruminants | 319 | ||
Production of d-Lactate in the Reticulorumen | 319 | ||
Production of d-Lactate in Neonatal Calf Diarrhea | 319 | ||
Production of d-Lactate in Acidosis Without Dehydration Syndromes | 320 | ||
Clinical signs of d-lactatemia | 321 | ||
Pathogenesis of neurologic signs in d-lactatemia | 322 | ||
Clinical syndromes caused by d-lactic metabolic acidosis in neonatal ruminants | 322 | ||
d-Lactic Metabolic Acidosis in Ruminal Drinkers | 322 | ||
Metabolic Acidosis Without Dehydration Syndrome in Suckler Calves | 324 | ||
d-Lactic Metabolic Acidosis in Neonatal Calf Diarrhea | 324 | ||
d-Lactic Metabolic Acidosis in Neonatal Small Ruminants | 325 | ||
Treatment of d-lactic metabolic acidosis | 326 | ||
Supplementary data | 327 | ||
References | 327 | ||
Sodium Balance and the Dysnatremias | 333 | ||
Key points | 333 | ||
Introduction | 333 | ||
Serum sodium concentration and osmolarity | 334 | ||
Physiologic regulation of ECF osmolarity and volume | 335 | ||
Water requirements | 335 | ||
Classification of the dysnatremias | 335 | ||
Hypernatremia | 336 | ||
Acute Hypernatremia | 336 | ||
Case example | 337 | ||
Iatrogenic acute hypernatremia | 339 | ||
Spontaneous acute hypernatremia | 339 | ||
Chronic Hypernatremia | 340 | ||
Hypernatremia Associated with Persistent Hyperglycemia | 340 | ||
Hyponatremia | 341 | ||
Acute Hyponatremia | 341 | ||
Clinical signs of acute hyponatremia | 342 | ||
Chronic Hyponatremia | 342 | ||
Treatment | 343 | ||
Fluid Therapy for Acute Hypernatremia (<48 hours) | 343 | ||
Fluid Therapy for Chronic Hypernatremia | 345 | ||
Fluid Therapy for the Hyperosmolar Syndrome in Crias | 346 | ||
Acute Hyponatremia (<48 hours) | 346 | ||
Chronic Hyponatremia (﹥48 hours) | 346 | ||
Prevention | 347 | ||
References | 347 | ||
Hypokalemia Syndrome in Cattle | 351 | ||
Key points | 351 | ||
Introduction | 351 | ||
Normal potassium balance | 351 | ||
The clinical syndrome | 352 | ||
Introduction | 352 | ||
Risk Factors | 352 | ||
Clinical Signs | 353 | ||
Pathophysiology | 354 | ||
Differential Diagnosis | 354 | ||
Clinical Pathology and Ancillary Tests | 355 | ||
Treatment | 355 | ||
Nonspecific treatment | 355 | ||
Specific treatment | 355 | ||
Prevention | 356 | ||
Prognosis | 356 | ||
Unanswered questions | 356 | ||
References | 356 | ||
Calcium and Magnesium Disorders | 359 | ||
Key points | 359 | ||
Impact of hypocalcemia on cow health | 359 | ||
Ca homeostasis | 360 | ||
Ca Pools Within the Body | 360 | ||
Role of Parathyroid Hormone | 360 | ||
Renal Ca Reabsorption | 361 | ||
Osteoclastic Bone Ca Resorption | 362 | ||
Osteocytic Osteolysis of Bone Ca | 363 | ||
Dietary Ca Absorption | 363 | ||
Vitamin D–Dependent Transcellular-Intestinal Absorption | 363 | ||
Paracellular Intestinal Ca Absorption | 364 | ||
Why does Ca homeostasis fail in some cows? | 365 | ||
High DCAD | 365 | ||
Application of DCAD Theory to Reduce Periparturient Hypocalcemia | 367 | ||
Desired Mineral Profile of Prepartum Diet | 367 | ||
Na | 367 | ||
Ca | 367 | ||
Mg | 368 | ||
P | 368 | ||
S | 368 | ||
K and Cl | 368 | ||
Monitoring Urine pH | 369 | ||
Agronomic Considerations for Producing Low DCAD Forages | 370 | ||
Hypomagnesemia | 370 | ||
Feeding a low-Ca diet before calving to prevent hypocalcemia | 371 | ||
Vitamin D supplementation | 372 | ||
Oral Ca treatments at calving | 372 | ||
Age | 373 | ||
Breed | 373 | ||
Summary of Hypocalcemia Avoidance Measures | 373 | ||
Mg | 374 | ||
Body Content and Distribution of Mg | 374 | ||
Factors Affecting the Soluble Mg Content in the Rumen | 374 | ||
Factors Affecting Active Transport of Mg Across the Rumen | 375 | ||
Using Other Transport Mechanisms to Absorb Dietary Mg | 375 | ||
Assessing Mg Status at Parturition | 375 | ||
Assessing Availability of Mg from Mineral Sources | 376 | ||
References | 376 | ||
Treatment of Phosphorus Balance Disorders | 383 | ||
Key points | 383 | ||
Functions of phosphorus in the organism | 383 | ||
Phosphorus, Inorganic Phosphorus, and Phosphate | 384 | ||
Distribution of Phosphorus in the Body | 384 | ||
Phosphorus homeostasis and homeorhesis | 385 | ||
Regulation of Phosphorus Homeostasis | 387 | ||
Assessment of Phosphorus Status | 387 | ||
Phosphorus concentration in serum or plasma | 388 | ||
Phosphorus concentration in whole blood or in red blood cells | 388 | ||
Phosphorus concentration in saliva | 388 | ||
Phosphorus concentration in urine | 388 | ||
Phosphorus concentration in feces or rumen fluid | 389 | ||
Bone phosphorus content | 389 | ||
Soft tissue phosphorus content | 389 | ||
Serum Phosphorus Concentration | 389 | ||
Site of blood sample collection | 390 | ||
Anticoagulants | 390 | ||
Sample collection and sample processing | 390 | ||
Presample collection factors | 390 | ||
Hypophosphatemia | 390 | ||
Mechanisms of Hypophosphatemia | 390 | ||
Hypophosphatemia due to inadequate dietary P supply | 391 | ||
Hypophosphatemia due to excessive P losses | 391 | ||
Hypophosphatemia due to compartmental P shifts | 391 | ||
Hypophosphatemia due to a combination of several mechanisms | 392 | ||
Occurrence of Hypophosphatemia | 392 | ||
Clinical Signs Associated with Hypophosphatemia | 393 | ||
Treatment Indication | 394 | ||
Treatment of Hypophosphatemia | 395 | ||
Parenteral Treatment | 395 | ||
Compounds for parenteral phosphate supplementation | 395 | ||
Dosage recommendations | 396 | ||
Infusion rate | 397 | ||
Recommendations for parenteral treatment | 397 | ||
Oral Treatment | 398 | ||
Hyperphosphatemia | 399 | ||
Phosphorus Toxicity and Hyperphosphatemia | 399 | ||
Clinical Signs of Hyperphosphatemia | 400 | ||
Treatment of Hyperphosphatemia | 401 | ||
References | 401 | ||
Fluid Therapy in Calves | 409 | ||
Key points | 409 | ||
Oral electrolyte therapy | 410 | ||
Sodium Concentration | 412 | ||
Chloride Concentration | 412 | ||
Potassium Concentration | 412 | ||
Sodium Absorption | 412 | ||
Osmolality | 413 | ||
Alkalinizing Ability | 414 | ||
Administration of oral electrolyte solutions | 416 | ||
Summary | 417 | ||
IV fluid therapy | 418 | ||
Assessing the Need for IV Fluid Therapy | 418 | ||
Solutions for IV Administration | 419 | ||
Lactated Ringer solution | 419 | ||
Acetated Ringer solution | 419 | ||
Isotonic sodium bicarbonate | 419 | ||
Hypertonic saline | 420 | ||
Hypertonic sodium bicarbonate | 420 | ||
Dextrose | 421 | ||
Administration of IV fluids | 421 | ||
A Simplified Protocol for On-farm IV Fluid Therapy | 422 | ||
References | 424 | ||
Fluid Therapy in Mature Cattle | 429 | ||
Key points | 429 | ||
Introduction | 429 | ||
What is the problem? | 430 | ||
Dehydration | 430 | ||
Acidosis or Alkalosis? | 430 | ||
Electrolyte Abnormalities | 431 | ||
What do I administer to correct the problem? | 431 | ||
Dehydration | 431 | ||
Acid-Base Balance and Electrolytes | 432 | ||
How much do I administer? | 433 | ||
Volume | 433 | ||
Correcting Acidosis | 434 | ||
Electrolytes | 435 | ||
By what route do I administer the solutions and at what rate? | 435 | ||
Techniques for Administration | 436 | ||
References | 438 | ||
Fluid Therapy in Small Ruminants and Camelids | 441 | ||
Key points | 441 | ||
Introduction | 441 | ||
Patient evaluation | 442 | ||
Hydration Deficit | 442 | ||
Electrolyte and Acid-Base Alterations | 442 | ||
Fluid Administration | 442 | ||
Route | 442 | ||
Volume and rate | 443 | ||
Replacement of hydration deficit | 443 | ||
Maintenance fluid requirement | 443 | ||
Ongoing losses | 444 | ||
Fluid type | 444 | ||
Crystalloid Solutions | 444 | ||
Hypertonic Solutions | 446 | ||
Hypotonic Solutions | 446 | ||
Acidifying Solutions | 446 | ||
Alkalinizing Solutions | 446 | ||
Dextrose Solutions | 447 | ||
Colloidal Solutions | 449 | ||
Orally Administered Solutions | 449 | ||
Parenteral nutrition | 450 | ||
References | 452 | ||
Update on the Use of Blood and Blood Products in Ruminants | 455 | ||
Key points | 455 | ||
Introduction | 455 | ||
Normal hematologic values for ruminants | 456 | ||
Whole blood | 457 | ||
Indications | 457 | ||
Contraindications | 458 | ||
Duration of Benefit | 458 | ||
Quantity Required | 458 | ||
Donor Selection | 459 | ||
Blood groups/types | 459 | ||
Biosecurity and disease transmission | 459 | ||
Autotransfusion | 460 | ||
Collection Technique | 461 | ||
Anticoagulants | 461 | ||
Commercial blood collection kits | 462 | ||
Storage | 463 | ||
Administration | 465 | ||
Adverse Reactions | 466 | ||
Blood components | 467 | ||
Plasma | 467 | ||
Indications | 467 | ||
Testing | 467 | ||
Benefits | 467 | ||
Collection technique and commercial sources | 468 | ||
Technique | 468 | ||
Adverse reactions | 469 | ||
Fractionated Blood Products | 469 | ||
pRBC | 469 | ||
PRP | 469 | ||
Hyperimmune serum | 470 | ||
Synthetic Blood Products | 470 | ||
Summary | 470 | ||
References | 471 | ||
Index | 475 |