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Page 4 of 8 Tak et al. Mini-invasive Surg 2018;2:15 I http://dx.doi.org/10.20517/2574-1225.2018.05

Table 2. Comparison among the study groups for various variables
Variable Group A Group B P value
Duration of surgery (min) 259 ± 72.14 416 ± 183.03 0.0006
Hb drop (gram per deciliter) 1.75 ± 0.71 1.9 ± 0.87 0.08
Blood transfused (units) 0.74 ± 1.01 1.00 ± 1.10 0.189
Post op pain score day-1 6.03 ± 0.27 7.9 ± 0.35 0.37
Post op pain score day-2 5.18 ± 0.99 6.0 ± 0.0 0
Post op pain score day-3 4.03 ± 0.27 5.0 ± 1.0 0
Post op pain score overall 5.08 ± 0.66 6.3 ± 0.86 0.0001
Analgesic need (milligram of tramadol) 642.45 ± 145.27 915.07 ± 137.85 0.0003
Post op ileus (days) 3.40 ± 0.96 4.61 ± 1.09 0.0006
Hospital stay (days) 10.16 ± 3.39 13.63 ± 5.37 0.004
Lymph node yield 22.27 ± 14.32 20.74 ± 13.57 0.533
Age 61.32 60.84 0.3

Table 3. Various complications among the two groups
Complication Group A Group B
Ileus for 3 days 42 12
Ileus for 4 days 7 17
Ileus for 5 days 3 14
Ileus for 6 days 1 1
Ileus for 7 days 0 1
Wound infection conservative management 5 13
Wound infection secondary re-suturing 3 9
Pelvic collection 1 0
Acute Respiratory Distress Syndrome (ARDS) 2 2
Pneumo-thorax 0 1
Myocardial ischemia 0 1
Acute gastric dilatation 1 0
Bowel anastomotic leak 1 0
Ureter anastomotic leak 0 3
Rectal injury (de-functioning colostomy 0 1
Death 2 3

compared to group B. It was 642.45 mg of tramadol and 915.07 mg of tramadol for group A and group B
respectively, showing a significant difference (P = 0.0003).

The mean hospital stay for group A was 10.16 days and 13.16 for group B, varying significantly (P = 0.004).
We have compared these two groups in relation to complications too [Tables 3 and 4]. Postoperative ileus
was defined as hypo motility of the gastrointestinal tract in the absence of mechanical bowel obstruction.
We have found the mean duration of postoperative paralytic ileus for group A to be 3.4 days and 4.61 days
for group B; the difference was statistically significant (P = 0.001) [Table 2].

There were more wound-related complications in group B (22 out of 63 patients; 41%) than group A (6 out of
53 patients; 15%), showing a statistically significant difference (P = 0.008). As we observed, there were more
overall complications in group B (30 out of 63 patients; 46%) as compared to group A (13 out of 53 patients; 24%).
Complications rate was significantly higher for group B (P = 0.006).

One patient with a body mass index of 33 kg/m in Pfannenstiel group had bowel leak and 3 patients of midline
2
incision group had urine leak from the site of anastomosis, but it was statistically insignificant (P = 0.17).

We have compared mortality data between these groups and found that 2 out of 53 (3.7%) patients in group A
died, while 3 out of 63 (4.7%) patients in group B died. Though there was more mortality in group B, it was
not statistically significant (P = 0.47).