Longer Operating Time During Gastrectomy Has Adverse Effects on Short-Term Surgical Outcomes

Yoshikawa²,

et al. 2020

Preprint

KEYWORDS 2 gastrectomy, neoadjuvant chemotherapy, surgical Apgar score 3 Abstract Background: The surgical Apgar score (SAS) or modified SAS (mSAS) has been reported as a simple and easy risk assessment system to predict postoperative complications (PCs) in primary surgery for gastric cancer (GC). However, there are still few studies which revealed the SAS's utility in gastric surgery after neoadjuvant chemotherapy (NAC). Methods: One hundred and fifteen patients who received NAC and R0 gastrectomy from 2008 and 2015 were included in this study. The SAS was determined by estimated blood loss (EBL), lowest intraoperative mean arterial pressure (LMAP), and lowest heat rate (LHR). The mSAS was determined by the EBL reassessed using the interquartile values. The predictive values of the SAS/mSAS for PCs were assessed with uni and multivariate analyses. Results: Among 115 patients, 41 (35.7%) developed PCs. According to analyses with receiver operating characteristic (ROC) curve of the SAS and mSAS for predicting PCs, the cutoff value of the mSAS was set at 8. The rates of anastomotic leakage, pancreatic fistula, and arrhythmia in patients with high mSAS (>8) values were higher, compared to those with low (0-3) and moderate (4-7) mSAS values. A multiple logistic regression analysis detected operation time, Body Mass Index (BMI), and Diabetes Mellitus (DM) were independent risk factors for PCs. The mSAS was not a significant predictor.Conclusions: Neither the SAS nor mSAS was a useful predictor of PCs in patients treated with NAC followed by radical gastrectomy. The predictive value of SAS/mSAS is limited in patients undergoing surgery after NAC.

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Predictive Value of the Surgical Apgar Score on Postoperative Complications in Advanced Gastric Cancer Patients Treated with Neoadjuvant Chemotherapy Followed by Radical Gastrectomy: A Single Center Retrospective Study

Yoshikawa²,

et al. 2020

Preprint

“…Excessive visceral fat easily induces metabolic syndrome, including DM, which makes patients more susceptible to infection and can inhibit wound healing. A long operation time has been reported to be a risk factor of postoperative complications, accelerating the speed of body metabolism and increasing the consumption of nutrition (22). These factors would not be changed after…”

Section: Discussionmentioning

confidence: 99%

Predictive Value of the Surgical Apgar Score on Postoperative Complications in Advanced Gastric Cancer Patients Treated with Neoadjuvant Chemotherapy Followed by Radical Gastrectomy: A Single-center Retrospective Study

Yoshikawa

et al. 2020

Preprint

Background The surgical Apgar score (SAS) or modified SAS (mSAS) has been reported as a simple and easy risk assessment system for predicting postoperative complications in primary surgery for gastric cancer. However, few studies have described the SAS’s utility in gastric surgery after neoadjuvant chemotherapy (NAC). Methods One hundred and fifteen patients who received NAC and radical gastrectomy from 2008 and 2015 were included in this study. The SAS was determined by the estimated blood loss (EBL), lowest intraoperative mean arterial pressure, and lowest heart rate. The mSAS was determined by the EBL reassessed using the interquartile values. The predictive values of the SAS/mSAS for postoperative complications were assessed with univariate and multiple logistic regression analyses. Results Among the 115 patients, 41 (35.7%) developed postoperative complications. According to analyses with receiver operating characteristic curves of the SAS and mSAS for predicting postoperative complications, the cut-off value of the mSAS was set at 8. The rates of anastomotic leakage, pancreatic fistula, and arrhythmia in patients with high mSAS (>8) values were higher than in those with low (0-3) and moderate (4-7) mSAS values. A multiple logistic regression analysis showed that the operation time, body mass index, and diabetes mellitus were independent risk factors for postoperative complications. The mSAS was not a significant predictor. Conclusions The predictive value of SAS or mSAS for morbidity may be limited in patients who undergo gastric cancer surgery after NAC. Future prospective studies with a large sample size will be needed to confirm the present results.

“…In this study, high BMI, DM, and long operation time were detected as risk predictors for postoperative complications in patients treated with NAC. These factors are well known predictors of complications in primary surgery (20)(21)(22)(23). High BMI is closely related to excessive visceral fat which may extend the operation time and impair lymph node dissection (24,25), increasing the di culty of the whole operation.…”

Section: The Analysis Of Confounding Factors For the Msasmentioning

confidence: 99%

“…Excessive visceral fat easily induces metabolic syndrome, including DM, which makes patients more susceptible to infection and which can inhibit wound healing. And long operation time has been reportedly to be a risk factor of postoperative complications, accelerating the speed of body metabolism and increasing the consumption of nutrition (22). These factors would not be changed after NAC.…”

Section: The Analysis Of Confounding Factors For the Msasmentioning

confidence: 99%

Predictive Value of the Surgical Apgar Score on Postoperative Complications in Advanced Gastric Cancer Patients Treated with Neoadjuvant Chemotherapy Followed by Radical Gastrectomy: A Single Center Retrospective Study

Yoshikawa²,

et al. 2020

Preprint

Background: The surgical Apgar score (SAS) or modified SAS (mSAS) has been reported as a simple and easy risk assessment system to predict postoperative complications (PCs) in primary surgery for gastric cancer (GC). However, there are still few studies which revealed the SAS’s utility in gastric surgery after neoadjuvant chemotherapy (NAC). Methods: One hundred and fifteen patients who received NAC and R0 gastrectomy from 2008 and 2015 were included in this study. The SAS was determined by estimated blood loss (EBL), lowest intraoperative mean arterial pressure (LMAP), and lowest heat rate (LHR). The mSAS was determined by the EBL reassessed using the interquartile values. The predictive values of the SAS/mSAS for PCs were assessed with uni and multivariate analyses. Results: Among 115 patients, 41 (35.7%) developed PCs. According to analyses with receiver operating characteristic (ROC) curve of the SAS and mSAS for predicting PCs, the cutoff value of the mSAS was set at 8. The rates of anastomotic leakage, pancreatic fistula, and arrhythmia in patients with high mSAS ( > 8) values were higher, compared to those with low (0-3) and moderate (4-7) mSAS values. A multiple logistic regression analysis detected operation time, Body Mass Index (BMI), and Diabetes Mellitus (DM) were independent risk factors for PCs. The mSAS was not a significant predictor. Conclusions: Neither the SAS nor mSAS was a useful predictor of PCs in patients treated with NAC followed by radical gastrectomy. The predictive value of SAS/mSAS is limited in patients undergoing surgery after NAC.