The Analgesic Effects of Metamizole-Sodium in Castrated Nigeria Indigenous Dogs | ||
| Journal of Applied Veterinary Sciences | ||
| Article 3, Volume 10, Issue 4, October 2025, Pages 25-36 PDF (439.7 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/javs.2025.399344.1675 | ||
| Authors | ||
| Uduak Joshua1; Ebenizer olaoluwa abidoye2; Tagang Aluwong3; Tauheed Abubakar Muazu* 4; Mansur Zubairu5 | ||
| 1Department of Surgery and Anaesthesiology, Faculty of Veterinary Medicine, Ahmadu Bello University Zaria Nigeria | ||
| 2Department of Veterinary Surgery and Anaesthesiology, Faculty of Veterinary Medicine, Ahmadu Bello University Zaria, Nigeria | ||
| 3Department of Veterinary Surgery and Anaesthesiology, Faculty of Veterinary Medicine, Ahmadu Bello University Zaria Nigeria | ||
| 4Department of Veterinary Anatomy Faculty of Veterinary Medicine Bayero University Kano Nigeria | ||
| 5Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Bayero University Kano Nigeria | ||
| Abstract | ||
| Nociceptive pain due to surgery is associated with discomfort and suffering. Metamizole sodium, though a potent analgesic, has been banned in many countries. The study is aimed at evaluating the analgesic efficacy of metamizole-sodium in castrated indigenous Nigerian dogs using electrocardiography (ECG). Twelve indigenous Nigerian male dogs aged between 6 months and 1 year with a mean body weight of 11.66 ± 1.26 kg undergoing castration were divided into three groups of four (4) animals each (n = 4). Groups A and B were treated with metamizole sodium via intramuscular (I/M) and transdermal routes at 50 mg/kg and 150 mg/kg, respectively. Group C was treated with normal saline 5 mg/kg i.m.Patients were monitored using standard methods for neutrophil count, vital parameters (rectal temperature, respiratory rate, heart rate and blood pressure), and ECG at 10 minutes before, during and at every 6-hour interval of 48 hours post-surgery. The neutrophil count in the intramuscular group (2.91 ± 0.55 × 109 L-1) was relatively lower than in the transdermal (3.54 ± 0.61 × 109 L-1) and control groups (4.41 ± 1.25 × 109 L-1) at 48 h post-surgery. There was no significant difference in the values of vital parameters obtained between the groups. The QRS interval was lower for intramuscular (0.10 ± 0.06 s) and transdermal (0.04 ± 0.00 s) than the control group (0.20 ± 0.16 s) at 18 h post-surgery. The P and T amplitudes were significantly (P < 0.001) higher for the tested groups than the control group during surgery and at 12 h post-surgery, respectively. In conclusion, the administration of metamizole sodium via the transdermal route prevented the side effect of agranulocytosis, evident by the decrease in neutrophil count of the intramuscular group compared to the transdermal group. Metamizole sodium transdermal patch induced analgesia, evident by the increase in QRS interval and decrease in P and T amplitudes of the ECG reading. This may be beneficial in alleviating pain due to castration in Nigerian indigenous dogs. | ||
| Keywords | ||
| Castration; Electrocardiography (ECG); Metamizole sodium; Nigeria indigenous dogs | ||
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