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  • Title: Acidic pelvic drainage as a predictive factor for anastomotic leakage after surgery for patients with rectal cancer.
    Author: Yang L, Huang XE, Xu L, Zhou X, Zhou JN, Yu DS, Li DZ, Guan X.
    Journal: Asian Pac J Cancer Prev; 2013; 14(9):5441-7. PubMed ID: 24175840.
    Abstract:
    PURPOSE: To demonstrate the value of sequential determinations of pelvic drainage in the identification of increased risk of anastomotic leakage (AL) after anterior resection for rectal cancer with a double stapling technique. PATIENTS AND METHODS: Between January 2004 and December 2011, data for the daily postoperative pH of pelvic drainage fluid in 753 consecutive patients with rectal cancer who initially underwent anterior resection with a double stapling technique were reviewed. All patients experienced a total mesorectal excision. Patients with anastomotic leakage (Group AL, n=57) were compared to patients without leakage (Group nAL, n=696). Patients with perioperatively abdominopelvic implants that were likely to affect pH value (determined at 25 °) other than leakage were excluded. Mean postoperative values were compared. RESULTS: Anastomotic leakage was noted in 57 (7.6%) of 753 patients with rectal cancer. The diagnosis of anastomotic leakage was made between the 6th and 12th postoperative day (POD; mean 8th POD). There was no significance of the daily average values of pH on POD1 and 2 in group AL while a significantly sharp declining mean pH value reached its diagnostic point of AL (p<0.001) on POD3. A cut-off value of 6.978 on the 3rd POD maximized the sensitivity (98.7.0%) and specificity (94.7%) in assessing the risk of leakage. CONCLUSION: According to these results, an early and persistent declining of pH value of pelvic drainage fluid after rectal surgery with anastomosis, is a marker of AL. A cut-off value of 6.798 on POD3 maximizes sensitivity and specificity.
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