Pain Induced by a Minor Medical Procedure (Bone Marrow Aspiration) in Dogs: Comparison of Pain Scales in a Pilot Study

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Abstract

Background: Bone marrow aspiration (BMA) is a clinical procedure frequently performed in dogs. Objective: To compare levels of pain intensity induced by 3 different BMA procedures using several pain scoring instruments. Animals: Sixteen healthy Beagles. Methods: A prospective experimental pilot study was conducted using blinded observers. Dogs were randomized into 3 groups: iliac BMA under sedation (Iliac-Sed, n = 4), sternum BMA under sedation (Stern-Sed, n = 4), and sternum BMA on conscious dogs without sedation (Stern-No-Sed, n = 8). Results: Using the SF-Glasgow pain scale, the overall pain score in the Stern-No-Sed group was lower than that in the Stern-Sed group (P = 0.04). Using the 4A-VET pain scale, the effects of procedures over time on pain scores did not differ between and within groups. An inactivity index indicated that the overall score for the Stern-No-Sed group was significantly lower than the scores for the Stern-Sed and Iliac-Sed groups (P ≤ 0.01). There was a significant association in pain assessment using the SF-Glasgow and 4A-VET pain scales (P = 0.0004). When comparing the SF-Glasgowscale to the 4A-VET pain scale, the scores for the Stern-No-Sed group were lower compared to those of the Stern-Sed scores (P = 0.03). Based on telemetered motor activity, the Iliac-Sed group may have experienced more discomfort during the post-procedural period. Conclusions and Clinical Importance: Dogs may experience mild to moderate pain after BMA procedures, and the sternal site should be preferred. The SF-Glasgow pain scale showed better interobserver reliability, but the 4A-VET scale was less biased by sedation. © 2011 by the American College of Veterinary Internal Medicine.

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Guillot, M., Rialland, P., Nadeau, M. È., Del Castillo, J. R. E., Gauvin, D., & Troncy, E. (2011). Pain Induced by a Minor Medical Procedure (Bone Marrow Aspiration) in Dogs: Comparison of Pain Scales in a Pilot Study. Journal of Veterinary Internal Medicine, 25(5), 1050–1056. https://doi.org/10.1111/j.1939-1676.2011.00786.x

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