Vet360 Vet360 Vol 06 Issue 02 | Page 23

SURGERY Table 2 Multivariable logistic regression Complication Table 2 Explanatory variable Comparison or unit Multivariable logistic Hemorrhage Method regression Scrotal vs. prescrotal Complication Hemorrhage Pain Pain Self-trauma Self-trauma Swelling 2 hours after surgery Swelling 2 hours Swelling 4 hours after surgery after surgery Swelling 4 hours Swelling 6 hours after surgery after surgery Swelling 6 hours Swelling 24 hours after surgery after surgery Swelling 24 hours Swelling 48 hours after surgery after surgery Swelling 48 hours Swelling 72 hours after surgery after surgery Swelling 72 hours after surgery Odds ratio 1.08 95% confidence interval P value 0.60, 1.96 0.79 State Explanatory variable Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method Method State State Weight Weight Method MSU vs. HA Comparison or unit Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal Scrotal vs. prescrotal MSU vs. HA MSU vs. HA Pound Pound Scrotal vs. prescrotal 26.45 Odds ratio 1.04 1.08 0.65 26.45 8.11 1.04 1.03 0.65 0.51 8.11 14.66 1.03 1.02 0.51 0.90 14.66 18.65 1.02 1.03 0.90 0.73 18.65 13.14 1.03 1.03 0.73 0.79 13.14 5.62 1.03 1.03 0.79 0.85 5.62 0.98 1.03 1.02 0.85 0.63 0.98 0.58 1.02 1.03 0.63 0.59 0.58 0.45 1.03 1.05 0.59 95% confidence 11.41, 61.3 interval 1, 1.072 0.60, 1.96 0.35, 1.2 11.41, 61.3 3.97, 16.55 1, 1.072 0.99, 1.06 0.35, 1.2 0.27, 0.97 3.97, 16.55 6.37, 33.72 0.99, 1.06 0.98, 1.05 0.27, 0.97 0.5, 1.66 6.37, 33.72 8.13, 42.77 0.98, 1.05 0.99, 1.06 0.5, 1.66 0.39, 1.36 8.13, 42.77 5.94, 29.06 0.99, 1.06 0.99, 1.06 0.39, 1.36 0.44, 1.41 5.94, 29.06 3.00, 10.51 0.99, 1.06 0.99, 1.06 0.44, 1.41 0.53, 1.34 3.00, 10.51 0.61, 1.57 0.99, 1.06 1, 1.05 0.53, 1.34 0.34, 1.01 0.61, 1.57 0.34, 0.97 1, 1.05 1.01, 1.05 0.34, 1.01 0.34, 1.02 0.34, 0.97 0.24, 0.83 1.01, 1.05 1.02, 1.08 0.34, 1.02 State MSU vs. HA 0.45 0.24, 0.83 0.01 Weight Pound 1.05 1.02, 1.08 < 0.01 < 0.01 P value 0.02 0.79 0.17 < 0.01 < 0.01 0.02 0.07 0.17 0.04 < 0.01 < 0.01 0.07 0.3 0.04 0.75 < 0.01 < 0.01 0.3 0.12 0.75 0.32 < 0.01 < 0.01 0.12 0.12 0.32 0.43 < 0.01 < 0.01 0.12 0.06 0.43 0.47 < 0.01 0.93 0.06 0.03 0.47 0.06 0.93 0.04 0.03 0.01 0.06 0.06 0.04 0.01 0.01 < 0.01 0.06 Table 3 Average surgical time Method No. of cases Mean (min.) Standard deviation Standard error Confidence interval Prescrotal 84 5.1 1.26 0.138 4.86, 5.41 Table 3 Average surgical time Scrotal 80 3.6 Method References Prescrotal No. of cases Mean (min.) 1 Standard deviation 84 5.1 1.26 1.  Fossum TW. Surgery of the reproductive and genital systems. In:  Small animal Scrotal 80 3.6 1 surgery. 2nd ed. Philadelphia: Elsevier, 2002;619-620. 2. Archibald J. Male genital system. In: Canine surgery. 2nd ed. Santa Barbara, California: American Veterinary Publications, 1974;727-729. 3.  Miller L, Zawistowski S. Efficient spay neuter techniques. In:  Shelter medicine for veterinarians and staff. 2nd ed. Ames, Iowa: Wiley-Blackwell, 2013;635-637. 4.  Pollari FL, Bonnett BN, Bamsey SC, et al. Postoperative complications of elective surgeries in dogs and cats determined by examining electronic and paper medical records. J Am Vet Med Assoc 1996;208:1882-1886. 5. Pollari FL, Bonnett BN. Evaluation of postoperative complications following elective surgeries of dogs and cats at private practices using computer records.  Can Vet 0.1 Standard error 3.38, 3.82 Confidence interval P value < 0.01 P value J1996;37:672-678. 0.138 4.86, 5.41 6. Kustritz MV. Determining the optimal age for gonadectomy of dogs and cats. J Am Vet Med 0.1 Assoc 2007;231:1665-1675. 3.38, 3.82 < 0.01 7.  Adin CA. Complications of ovariohysterectomy and orchiectomy in companion animals. Vet Clin North Am Small Anim Pract 2011;41:1023-1039. 8. Howe LM. Surgical methods of contraception and sterilization. Theriogenology2006;66:500-509. 9. Parkinson TJ. Progress towards less invasive veterinary surgery. Vet Rec 2012;171:67- 68. Issue 02 | MAY 2019 | 23