Veterinary surgery : VS
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Veterinary surgery : VS · Jan 1996
Comparative StudyA comparison of epidural saline, morphine, and bupivacaine for pain relief after abdominal surgery in goats.
The purpose of this study was to determine the analgesic efficacy of bupivacaine, morphine, or saline (control) when injected epidurally into the lumbosacral epidural space in goats after abdominal surgery. Goats received either bupivacaine (0.5%; 1.5 mg/kg in 0.9% sodium chloride solution), 0.9% sodium chloride solution (0.2 mL/kg), or preservative-free morphine (0.1 mg/kg). Total volume injected into the epidural space was 0.2 mL/kg for all groups. ⋯ At 50 minutes, the pain score for the saline group was higher than the morphine group. Pain score over all time in the saline group (1.5 +/- 0.10) was higher than the morphine (1.2 +/- 0.07) and bupivacaine (1.2 +/- 0.04) groups. One goat in the saline group required two intravenous injections of flunixin meglumine for pain.
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Veterinary surgery : VS · Jan 1996
Cardiopulmonary effects of using carbon dioxide for laparoscopic surgery in dogs.
Cardiopulmonary effects of laparoscopic surgery were investigated in five crossbred dogs (21 +/- 1.9 kg). Premedicated dogs were anesthetized with thiopental and maintained with halothane at 1.5 times minimum alveolar concentration in oxygen. Controlled ventilation maintained partial pressure of end-tidal CO2 at 40 +/- 2 mm Hg. ⋯ For 30 minutes after desufflation, there was a significant decrease in PaO2, and increases in cardiac output, O2 delivery, and heart rate, compared with baseline. There was a significant increase in shunt fraction and decrease in pH at 15 minutes after desufflation only. The changes were within physiologically acceptable limits in these healthy, ventilated dogs.
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Veterinary surgery : VS · Nov 1995
Comparative StudyComparison of intra-articular and epidural morphine for analgesia following stifle arthrotomy in dogs.
We prospectively studied 18 dogs that presented for exploratory stifle arthrotomy, with or without meniscectomy, and lateral extracapsular stabilization as a result of cranial cruciate ligament rupture. Dogs were premedicated with acepromazine, induced with thiopental, and maintained with halothane in oxygen. Preoperatively, dogs were assigned to one of three groups. ⋯ There was no difference between analgesia produced by intra-articular morphine compared with that of epidural morphine. Side effects after intra-articular or epidural morphine were not observed. Intra-articular administration of morphine can produce effective analgesia in dogs comparable with that produced by epidural administration of morphine.
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Eight adult cats, 4 male and 4 female, (3.5 +/- 0.9 [SD] kg) were used to determine the minimum alveolar concentration (MAC) of desflurane. Desflurane (DES) anesthesia was induced in a 20 L chamber with an oxygen inflow of 10 L/min and the DES vaporizer set at 18%. After 3.5 +/- 0.5 min, the cats were removed from the chamber and anesthesia was maintained via mask (14% DES, 3L/min O2) until successful intubation. ⋯ The final iteration was 10%. The MAC of DES in these cats was 9.79 +/- 0.70 vol %. The FA/FI ratio for desflurane was always greater than 0.97.
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Veterinary surgery : VS · May 1995
Comparative StudyBlood gas values during intermittent positive pressure ventilation and spontaneous ventilation in 160 anesthetized horses positioned in lateral or dorsal recumbency.
One hundred sixty horses were anesthetized with xylazine, guaifenesin, thiamylal, and halothane for elective soft tissue and orthopedic procedures. Horses were randomly assigned to one of four groups. Group 1 (n = 40): Horses positioned in lateral (LRG1; n = 20) or dorsal (DRG1; n = 20) recumbency breathed spontaneously throughout anesthesia. ⋯ The pH changes paralleled the changes in PaCO2. Blood gas values during right versus left lateral recumbency in all groups were also evaluated. The PaO2 values were significantly lower and the P(A-a)O2 values were significantly higher during SV in horses positioned in left lateral (LRLG1) compared with right lateral (LRRG1) recumbency.(ABSTRACT TRUNCATED AT 400 WORDS)