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.
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