Accuracy of calculated arterial saturation in oxygen in neonatal foals and effects of monitor,sensor, site of sensor placement,and degree of hypoxemia on the accuracy of pulse oximetry     

Steeve Giguère DVM  PhD  DACVIM  L. Chris Sanchez DVM  PhD  DACVIM  Andre Shih DVM  DACVA 《Journal of Veterinary Emergency and Critical Care》2014,24(5):529-535

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Noninvasive ventilation in cats     

Judy E. Brown  DVM  MSc  ; Alexa M.E. Bersenas  DVM  MSc  DACVECC  ; Karol A. Mathews  DVM  DVSc  DACVECC    Carolyn L. Kerr  DVM  PhD  DVSc  DACVA 《Journal of Veterinary Emergency and Critical Care》2009,19(5):416-425

Objective – The primary objective of this study was to assess the feasibility of noninvasive mechanical ventilation (NIV) in cats. The secondary objective was to determine whether cardiovascular parameters and anesthetic drug requirements associated with noninvasive ventilation differ from those associated with invasive ventilation. Design – Randomized, cross‐over design. Setting – A research laboratory in a veterinary teaching hospital. Animals – Eight healthy adult cats, 3 intact females and 5 intact males, weighing between 3 and 6 kg, were used. Interventions – Each cat was randomly assigned to NIV via nasal mask, or invasive ventilation using an endotracheal tube. Mechanical ventilation was performed for 6 hours. Anesthesia was provided using continuous infusions of propofol and butorphanol. After a minimum 9‐day washout period, the procedure was repeated using the alternate ventilation interface. Measurements and Main Results – Cardiovascular parameters (heart rate, rectal temperature, direct arterial blood pressure), arterial blood gases, drug requirements, sedation score, and ventilation parameters, were monitored throughout the procedures. These values were evaluated using ANCOVA for repeated measures. All cats were effectively ventilated using NIV. There were no significant differences in cardiovascular parameters, drug requirements, or sedation scores between groups. Although PaCO₂ values did not differ, PaO₂ values were significantly higher in the invasively ventilated group. Inspiratory tidal volumes were similar between groups, whereas expiratory tidal volumes were significantly lower in the NIV group. Inspiratory pressures were significantly higher in the NIV group. Respiratory frequency was significantly higher in the invasively ventilated group. Conclusions – NIV of cats is possible. However, currently it does not confer any cardiovascular benefit over invasive ventilation and drug requirements are similar. Use of a correctly fitted mask is essential for successful NIV as air leaks account for the observed discrepancy between inspiratory and expiratory volumes. Further investigation into this modality is warranted.  相似文献   

Successful biphasic transthoracic defibrillation of a dog with prolonged, refractory ventricular fibrillation     

Janice M. Bright  BSN  MS  DVM  DACVIM    Bonnie D. Wright  DVM  DACVA 《Journal of Veterinary Emergency and Critical Care》2009,19(3):275-279

Objective – To describe a case of spontaneous ventricular fibrillation in a dog in which biphasic defibrillation was life saving.
Case Summary – Ventricular fibrillation occurred in a 7-year-old female Australian Heeler during recovery from anesthesia following pacemaker implantation. Resuscitative efforts including immediate delivery of transthoracic monophasic defibrillation shocks of escalating energy and administration of vasopressors were unsuccessful. However, a single biphasic shock restored sinus rhythm despite prolonged duration of the arrhythmia.
New or Unique Information Provided – This case suggests greater efficacy of biphasic defibrillation compared with traditional monophasic defibrillation. In this dog the newer, biphasic technology was life saving after monophasic shocks failed repeatedly to terminate ventricular fibrillation.  相似文献