pferde spiegel 2012; 15(1): 10-14
DOI: 10.1055/s-0031-1298270
fachspiegel
Enke Verlag in MVS Medizinverlage Stuttgart GmbH & Co. KG Stuttgart · New York

Anästhesie des Fohlens Teil 1 Physiologische Besonderheiten

Sedation and general anaesthesia in foals
Klaus Hopster
,
Sabine B. R. Kästner
Further Information

Publication History

Publication Date:
21 March 2012 (online)

Summary

Foals are anaesthetized for a variety of reasons. Anaesthesia is needed in healthy foals for procedures as correction of angular limb deformities and congenital hernias or in sick foals for abdominal surgery like colic surgery or repair of a ruptured urinary bladder. According to the literature foals under age one week are 7 times more likely to develop an anaesthesia-related fatality compared to adult horses.

Neonatal foals are physiologically different from mature horses. Therefore anaesthesia management is difficult to extrapolate from adult horses or from other species. To develop an anaesthetic plan, the anaesthetist must have profound knowledge of the different physiology and different pharmacokinetic and -dynamic properties of the equine neonate which are discussed in this article.

 
  • Literatur

  • 1 Arguedas MG, Hines MT, Papich MG, Farnsworth KD, Sellon DC. Pharmacokinetics of butorphanol and evaluation of physiologic and behavioral effects after intravenous and intramuscular administration to neonatal foals. J Vet Intern Med 2008; 22: 1417-1426
  • 2 Dunlop CL. Anesthesia and sedation in foals. Vet Clin N Am: Equine Pract 1994; 10: 67-85
  • 3 Fey K, Kolm G. Fohlenmedizin. Stuttgart: Enke; 2011
  • 4 Holdstock NB, Ousey JC, Rossdale PD. Glomerular filtration rate, effective renal plasma flow, blood pressure and pulse rate in the equine neonate during the first 10 days post partum. Equine Vet J 1998; 30: 335
  • 5 Johnston GM, Eastment JK, Wood JLN, Taylor PM. Confidential enquiry of postoperative equine fatalities (CEPEF): mortality results of Phases 1 and 2. Vet Anaesth Analg 2002; 29: 159-170
  • 6 Kami G, Merritt AM, Duelly P. Preliminary studies of plasma and extracellular fluid volume in neonatal ponies. Equine Vet J 1984; 16: 356
  • 7 Normal WM, Court MH, Greenblatt DJ. Age-related changes in the pharmacokinetic disposition of diazepam in foals. Am J Vet Res 1997; 58: 878-880
  • 8 Robertson SA. Sedation and general anesthesia of the foal. Equine Vet Educ 2005; 7: 94-101
  • 9 Rossdale PD. Some parameters of respiratory function in normal and abnormal newborn foals with specific reference to levels of PaO2 during air and oxygen inhalation. Res Vet Sci 1970; 11: 270-276
  • 10 Spensley MS, Carlson GP, Harrold D. Plasma, red blood cell, total blood, and extracellular fluid volumes in healthy horse foals during growth. Am J Vet Res 1987; 48: 1703
  • 11 Stewart JH, Rose RJ, Barko AM. Respiratory studies in foals from birth to seven days old. Equine Vet J 1984; 16: 323
  • 12 Stewart JH, Rose RJ, Barko AM. Response to oxygen administration in foals: effect of age, duration and method of administration on arterial blood gas values. Equine Vet J 1984; 16: 329
  • 13 Vaala WE. Aspects of pharmacology in the neonatal foal. Vet Clin N Am: Equine Pract 1985; 1: 51-75