Pancreatic Chymotrypsin Activity Rather Than Amylase Level Better Predicts Postoperative Pancreatic Fistula

Abstract Background Postoperative pancreatic fistula (POPF) is a serious complication after gastric cancer surgery. The current study aimed to investigate the significance of the anatomic location of the pancreas as a predictor for POPF in both laparoscopic gastrectomy (LG) and open gastrectomy (OG). Methods In total, 233 patients with gastric cancer were assessed retrospectively. We measured the maximum vertical (P-L height; PLH) and horizontal length (P-L depth; PLD) between the upper border of pancreas and the root of left gastric artery on a preoperative CT in the sagittal direction. The maximum length of the vertical line between the surface of the pancreas and the aorta (P-A length), previously reported as prognostic factor of POPF, was also measured. We investigated the correlations between these parameters and the incidence of POPF in LG and OG groups. Results Among the patients in this study, 118 underwent OG and 115 underwent LG. In LG, the median PLH and P-A length in patients with POPF were significantly longer compared with those without POPF (p = 0.026, 0.034, respectively), but not in OG. There was no significant difference in the median PLD between the patients with or without POPF in both LG and OG. The multivariate analysis demonstrated that PLH (odds ratio [OR] 4.19, 95% confidence interval [CI] 1.57–11.3, P = 0.004) and P-A length (OR 4.06, 95%CI 1.05–15.7, P = 0.042] were independent factors for predicting POPF in LG. However, intraoperative blood loss (OR 2.55, 95%CI 1.05–6.18, P = 0.038) was extracted as an independent factor in OG. The median amylase level in the drained fluid (D-Amy) were significantly higher in patients with high PLH(≥12.4 mm) or high P-A length (≥45 mm) compared with those with low PLH or low P-A length in LG. However, there were no differences in the D-Amy levels by PLH or P-A length in OG patients. Conclusions The anatomic location of the pancreas is a specific and independent predictor of POPF in LG but not in OG. PLH is a simple parameter that can evaluate the anatomic position of the pancreas, and it may be useful for preventing POPF after LG.

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Comparison of prognostic impact of anatomic location of the pancreas on postoperative pancreatic fistula in laparoscopic and open gastrectomy

10.21203/rs.3.rs-53308/v3 ◽

2020 ◽

Author(s):

Jun Kinoshita ◽

Takahisa Yamaguchi ◽

Hiroto Saito ◽

Hideki Moriyama ◽

Mari Shimada ◽

...

Keyword(s):

Gastric Cancer ◽

Pancreatic Fistula ◽

Left Gastric Artery ◽

Postoperative Pancreatic Fistula ◽

Open Gastrectomy ◽

Amylase Level ◽

Prognostic Impact ◽

Anatomic Location ◽

Significant Difference ◽

Preoperative Ct

Abstract Background: Postoperative pancreatic fistula (POPF) is a serious complication after gastric cancer surgery. The current study aimed to investigate the significance of the anatomic location of the pancreas as a predictor for POPF in both laparoscopic gastrectomy (LG) and open gastrectomy (OG). Methods: In total, 233 patients with gastric cancer were assessed retrospectively. We measured the maximum vertical (P-L height; PLH) and horizontal length (P-L depth; PLD) between the upper border of pancreas and the root of left gastric artery on a preoperative CT in the sagittal direction. The maximum length of the vertical line between the surface of the pancreas and the aorta (P-A length), previously reported as prognostic factor of POPF, was also measured. We investigated the correlations between these parameters and the incidence of POPF in LG and OG groups. Results: Among the patients in this study, 118 underwent OG and 115 underwent LG. In LG, the median PLH and P-A length in patients with POPF were significantly longer compared with those without POPF (p=0.026, 0.034, respectively), but not in OG. There was no significant difference in the median PLD between the patients with or without POPF in both LG and OG. The multivariate analysis demonstrated that PLH (odds ratio [OR] 4.19, 95% confidence interval [CI] 1.57–11.3, P=0.004) and P-A length (OR 4.06, 95%CI 1.05–15.7, P=0.042] were independent factors for predicting POPF in LG. However, intraoperative blood loss (OR 2.55, 95%CI 1.05–6.18, P=0.038) was extracted as an independent factor in OG. The median amylase level in the drained fluid (D-Amy) were significantly higher in patients with high PLH(≥12.4 mm) or high P-A length (≥45 mm) compared with those with low PLH or low P-A length in LG. However, there were no differences in the D-Amy levels by PLH or P-A length in OG patients. Conclusions: The anatomic location of the pancreas is a specific and independent predictor of POPF in LG but not in OG. PLH is a simple parameter that can evaluate the anatomic position of the pancreas, and it may be useful for preventing POPF after LG.

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Early Drain Removal Regardless of Drain Fluid Amylase Level Might Reduce Risk of Postoperative Pancreatic Fistula

Anticancer Research ◽

10.21873/anticanres.14789 ◽

2021 ◽

Vol 41 (1) ◽

pp. 403-408

Author(s):

HIROMICHI KAWAIDA ◽

HIROSHI KONO ◽

HIDETAKE AMEMIYA ◽

NAOHIRO HOSOMURA ◽

YUDAI HIGUCHI ◽

...

Keyword(s):

Pancreatic Fistula ◽

Postoperative Pancreatic Fistula ◽

Amylase Level ◽

Drain Removal ◽

Drain Fluid ◽

Reduce Risk

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Total Amylase Value in Drains After Gastrectomy for Predicting Postoperative Pancreatic Fistula

International Surgery ◽

10.9738/intsurg-d-17-00127.1 ◽

2020 ◽

Author(s):

Toshitaka Sugawara ◽

Hisashi Shinohara ◽

Shusuke Haruta ◽

Junichi Shindo ◽

Masaki Ueno ◽

...

Keyword(s):

Pancreatic Fistula ◽

Concentration Ratio ◽

Univariate Analysis ◽

Area Under The Curve ◽

Predictive Performance ◽

Roc Curves ◽

Postoperative Pancreatic Fistula ◽

Amylase Level ◽

Anastomotic Site ◽

Drainage Fluid

Objective: Postoperative pancreatic fistula (POPF) is defined using the ratio of the bilirubin concentration in abdominal drainage fluid to the upper normal range of serum amylase level. However, we hypothesized that the total amylase value in discharge (AVD) on POD 3 may be more sensitive for predicting grade II or higher severe POPF sPOPF, and compared the predictive power of the conventional definition of POPF and AVD for sPOPF. Methods: One hundred and fifty-one patients who underwent gastrectomy between October 2011 and February 2013 were analyzed. A drainage tube was placed in all the cases through the stump of the right gastroepiploic vein and the front of the pancreas to the back of the anastomotic site. The drainage volume and amylase concentration in the discharge were examined on POD 1, 3, and 5. AVD was calculated by multiplying the volume by the amylase concentration. Results: Eight patients (5.3%) developed sPOPF. In univariate analysis, both AVD and the amylase concentration ratio was significantly correlated with sPOPF (P = 0.002 and 0.007, respectively). AVD on POD 3 showed the best predictive performance compared with the amylase concentration ratio on POD 3 (area under the curve 0.876 vs. 0.844). Based on the cutoff values calculated from the ROC curves, AVD was more specific than amylase concentration ratio in predicting sPOPF (specificity: 97.6% vs. 86.0%; PPV: 62.5% vs. 23.1%). Conclusion: AVD on POD 3 is a more specific parameter than conventional amylase concentration ratio in predicting sPOPF.

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Amylase level after pancreaticoduodenectomy in predicting postoperative pancreatic fistula

Asian Journal of Surgery ◽

10.1016/j.asjsur.2020.11.022 ◽

2020 ◽

Author(s):

Kwang Yeol Paik ◽

Ji Seon Oh ◽

Eung Kook Kim

Keyword(s):

Pancreatic Fistula ◽

Postoperative Pancreatic Fistula ◽

Amylase Level

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To Study the Biochemical Markers for the Prediction of Fistula Formation after Pancreatic Resection Surgery in the Post Operative Period

Academia Journal of Surgery ◽

10.47008/ajs/2020.3.2.9 ◽

2021 ◽

Vol 3 (2) ◽

pp. 33-39

Author(s):

SA Mir ◽

S. Akhter ◽

S. S. Ahmad ◽

S. H. Altaf ◽

J. Ahmad ◽

...

Keyword(s):

Pancreatic Fistula ◽

Pancreatic Resection ◽

Serum Amylase ◽

Postoperative Pancreatic Fistula ◽

Fistula Formation ◽

Amylase Level ◽

Medical Procedure ◽

Serum Amylase Level ◽

Post Operation ◽

Laboratory Biomarkers

Background: To study and assess the potential laboratory biomarkers for foreseeing postoperative pancreatic fistula (POPF) after pancreatic resection medical procedures. Subjects and Methods: 64 patients were studied from Jan 2008 to Dec 2018. All patients undergoing Pancreatic resection surgeries like Pancreaticoduodenectomy (PD), distal Pancreatectomy (DP) for tumors of the periampullary region, Pancreatic body or chronic pancreatitis Clinical data of the patients, surgical approach, pancreatic parenchymal tissue consistency, histopathology of the specimen, white blood cell count and blood amylase levels tube Drain fluid amylase were recorded and analyzed. Correlations between these parameters and postoperative pancreatic fistula (POPF) were assessed. Results : 22 out of the 64 (34.37%) patients developed POPF. The fistula was graded according to the ISPG classification. It was Grade An of every 10 (45.45%) patients, grade B in 8 (36.36%), and grade C in 4 (18.18%),.On univariate and multivariate strategic relapse investigations, higher amylase levels in the stomach waste liquid on a postoperative day (POD)1 and higher serum amylase levels on POD4 indicated a critical relationship with fistula arrangement in the post-operation period (POPF) (P < 0.05). On ROC (recipient working trademark bend) examination, amylase cut-off degree of 2270.67 U/L in the stomach waste liquid was related with a 76.6% affectability and 82% particularity [area under the bend (AUC): 0.844; P = 0.009]. A cut-off serum amylase level of 53.2 U/L was related with a 74.6% affectability and 72.9% explicitness (AUC: 0.784; P = 0.05). Conclusion: Post-operative channel liquid amylase levels on day 1 and serum amylase level on day 4 speak to interesting biomarkers related to POPF improvement after the pancreatic medical procedure.

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Evaluation of Drain Amylase Level after Pancreaticoduodenectomy with Special Reference to Delayed Pancreatic Fistula

The American Surgeon ◽

10.1177/000313481808400325 ◽

2018 ◽

Vol 84 (3) ◽

pp. 403-409

Author(s):

Takashi Maeda ◽

Hiroto Kayashima ◽

Daisuke Imai ◽

Kazuki Takeishi ◽

Noboru Harada ◽

...

Keyword(s):

Pancreatic Fistula ◽

Clinical Characteristics ◽

Serum Amylase ◽

Postoperative Pancreatic Fistula ◽

Amylase Level ◽

Pancreatic Ducts ◽

Fatal Complication ◽

Drain Removal ◽

Soft Pancreas ◽

Drain Amylase

Postoperative pancreatic fistula (PF) is a relatively frequent and occasionally fatal complication of pancreatoduodenectomy (PD). Several risk factors for PF have been reported, including high drain amylase level (D-AMY). Among the 140 consecutive patients who underwent PD, we analyzed 110 cases with D-AMY measurements over time after PD. According to the D-AMY change, we divided patients into five patterns and defined delayed PF cases. We analyzed clinical characteristics, including serum amylase and D-AMY, and examined the correlation between the period of drain insertion and PF grade. In 15 delayed PF cases, 12 cases were grade B or C, pancreatic cancer was less frequent, pancreatic ducts were smaller, and soft pancreas texture was more commonly observed. The D-AMYon postoperative day (POD) 1 was higher in cases of delayed PF compared with non-PF cases ( P < 0.0001). In 28 cases with drain removal before POD 7, grade B or C PF was not observed afterward. The average D-AMYon POD 1 in cases with drain removal before POD 1 was significantly lower than in delayed PF cases. Although further studies are required to determine the most appropriate timing of drain removal, it is thought that intra-abdominal drains should be removed within seven days of PD in cases without signs of PF. On the other hand, delayed PF should be considered in cases of soft pancreas texture and/or high D-AMY on POD 1, even if D-AMY levels are low on POD 3 or decreasing on POD 5.

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