The Experts below are selected from a list of 171 Experts worldwide ranked by ideXlab platform

Kenichi Sugihara - One of the best experts on this subject based on the ideXlab platform.

  • Functional evaluation after vagus nerve–sparing laparoscopically assisted distal gastrectomy
    Surgical Endoscopy, 2008
    Co-Authors: Kazuyuki Kojima, Hiroyuki Yamada, Mikito Inokuchi, T. Kawano, Kenichi Sugihara
    Abstract:

    Background Vagus nerve–sparing laparoscopically assisted distal gastrectomy (Vs-LADG) for early gastric cancer has been introduced to reduce Postgastrectomy Syndrome, but its clinical and functional outcomes remain unclear. Methods Of the 105 patients reviewed in this study, 75 underwent Vs-LADG and 30 underwent laparoscopically assisted distal gastrectomy (LADG) for gastric cancer between January 1999 and May 2006. The clinical and functional outcomes of these two groups were compared. Results The clinical and pathologic background between the two groups did not differ. The incidence of gallstone was significantly lower in the Vs-LADG group than in the LADG group ( p < 0.05), but no differences existed in duration of surgery, intraoperative blood loss, number of retrieved lymph nodes, time to first flatus after surgery, or length of hospital stay between the two groups. Conclusions As shown by the findings, Vs-LADG is a safe and minimally invasive surgery that may decrease the incidence of gallstone formation after gastrectomy.

  • Functional evaluation after vagus-nerve-sparing laparoscopically assisted distal gastrectomy.
    Surgical endoscopy, 2008
    Co-Authors: Kazuyuki Kojima, Hiroyuki Yamada, Mikito Inokuchi, T. Kawano, Kenichi Sugihara
    Abstract:

    Background Vagus nerve–sparing laparoscopically assisted distal gastrectomy (Vs-LADG) for early gastric cancer has been introduced to reduce Postgastrectomy Syndrome, but its clinical and functional outcomes remain unclear.

Koji Nakada - One of the best experts on this subject based on the ideXlab platform.

Kazuyuki Kojima - One of the best experts on this subject based on the ideXlab platform.

  • Vagus-Preserving Gastrectomy
    Surgery for Gastric Cancer, 2019
    Co-Authors: Masatoshi Nakagawa, Kazuyuki Kojima
    Abstract:

    Vagus nerve-preserving gastrectomy was first introduced in 1991 for the purpose of alleviating Postgastrectomy Syndrome. There are three main parts of the vagus nerve that are preserved in vagus nerve-preserving gastrectomy: the hepatic branch, the celiac branch, and the hepatic plexus. Vagus nerve-preserving gastrectomy was first introduced in open surgery, but, as minimally invasive surgery became more pervasive, it has recently also been performed as a minimally invasive procedure, the magnified view of which facilitates identification of the vagus nerve, as well as a precise procedure. At present, there are not enough reports to show conclusive evidence for the feasibility and efficacy of vagus nerve-preserving gastrectomy. However, based on currently available reports, it can be said that vagus nerve-preserving gastrectomy is a technically feasible and oncologically acceptable procedure as long as the proper inclusion criteria are applied, and it brings about positive short-term and long-term outcomes for patients, which improve the patients’ postoperative quality of life.

  • Functional evaluation after vagus nerve–sparing laparoscopically assisted distal gastrectomy
    Surgical Endoscopy, 2008
    Co-Authors: Kazuyuki Kojima, Hiroyuki Yamada, Mikito Inokuchi, T. Kawano, Kenichi Sugihara
    Abstract:

    Background Vagus nerve–sparing laparoscopically assisted distal gastrectomy (Vs-LADG) for early gastric cancer has been introduced to reduce Postgastrectomy Syndrome, but its clinical and functional outcomes remain unclear. Methods Of the 105 patients reviewed in this study, 75 underwent Vs-LADG and 30 underwent laparoscopically assisted distal gastrectomy (LADG) for gastric cancer between January 1999 and May 2006. The clinical and functional outcomes of these two groups were compared. Results The clinical and pathologic background between the two groups did not differ. The incidence of gallstone was significantly lower in the Vs-LADG group than in the LADG group ( p < 0.05), but no differences existed in duration of surgery, intraoperative blood loss, number of retrieved lymph nodes, time to first flatus after surgery, or length of hospital stay between the two groups. Conclusions As shown by the findings, Vs-LADG is a safe and minimally invasive surgery that may decrease the incidence of gallstone formation after gastrectomy.

  • Functional evaluation after vagus-nerve-sparing laparoscopically assisted distal gastrectomy.
    Surgical endoscopy, 2008
    Co-Authors: Kazuyuki Kojima, Hiroyuki Yamada, Mikito Inokuchi, T. Kawano, Kenichi Sugihara
    Abstract:

    Background Vagus nerve–sparing laparoscopically assisted distal gastrectomy (Vs-LADG) for early gastric cancer has been introduced to reduce Postgastrectomy Syndrome, but its clinical and functional outcomes remain unclear.

Yasuhiro Kodera - One of the best experts on this subject based on the ideXlab platform.

  • Comparison of Postoperative Quality of Life among Three Different Reconstruction Methods After Proximal Gastrectomy: Insights From the PGSAS Study
    World Journal of Surgery, 2020
    Co-Authors: Hiroshi Yabusaki, Hiroaki Hata, Hiroshi Noro, Shinichi Kinami, Masashi Yoshida, Keishiro Aoyagi, Yasuhiro Kodera, Norimasa Fukushima, Naoki Hiki, Atsushi Oshio
    Abstract:

    Background Proximal gastrectomy (PG) has become an increasingly preferred procedure for early cancer in the upper third of the stomach, owing to reportedly superior quality of life (QOL) after PG when compared with total gastrectomy. However, various methods of reconstruction have currently been proposed. We compared the postoperative QOL among the three different reconstruction methods after PG using the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45) questionnaire. Methods Post Gastrectomy Syndrome Assessment Study (PGSAS), a nationwide multi-institutional survey, was conducted to evaluate QOL using the PGSAS-45 among various types of gastrectomy. Of the 2,368 eligible data from the PGSAS survey, data from 193 patients who underwent PG were retrieved and used in the current study. The PGSAS-45 consists of 45 items including 22 original gastrectomy specific items in addition to the SF-8 and GSRS. These were consolidated into 19 main outcome measures pertaining Postgastrectomy symptoms, amount of food ingested, quality of ingestion, work, and level of satisfaction for daily work, and the three reconstruction methods ( n  = 193; 115 esophago-gastrostomy [PGEG], 34 jejunal interposition [PGJI], and 44 jejunal pouch interposition [PGJPI]) were compared using PGSAS-45. Results Size of the remnant stomach was significantly larger in PGEG, and significantly smaller in PGJI and PGJPI ( P  

  • Comparison of Postoperative Quality of Life among Three Different Reconstruction Methods After Proximal Gastrectomy: Insights From the PGSAS Study.
    World journal of surgery, 2020
    Co-Authors: Hiroshi Yabusaki, Shuichi Ota, Hiroaki Hata, Shinichi Kinami, Masashi Yoshida, Keishiro Aoyagi, Yasuhiro Kodera, Norimasa Fukushima, Naoki Hiki, Hiroshi Noro
    Abstract:

    Proximal gastrectomy (PG) has become an increasingly preferred procedure for early cancer in the upper third of the stomach, owing to reportedly superior quality of life (QOL) after PG when compared with total gastrectomy. However, various methods of reconstruction have currently been proposed. We compared the postoperative QOL among the three different reconstruction methods after PG using the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45) questionnaire. Post Gastrectomy Syndrome Assessment Study (PGSAS), a nationwide multi-institutional survey, was conducted to evaluate QOL using the PGSAS-45 among various types of gastrectomy. Of the 2,368 eligible data from the PGSAS survey, data from 193 patients who underwent PG were retrieved and used in the current study. The PGSAS-45 consists of 45 items including 22 original gastrectomy specific items in addition to the SF-8 and GSRS. These were consolidated into 19 main outcome measures pertaining Postgastrectomy symptoms, amount of food ingested, quality of ingestion, work, and level of satisfaction for daily work, and the three reconstruction methods (n = 193; 115 esophago-gastrostomy [PGEG], 34 jejunal interposition [PGJI], and 44 jejunal pouch interposition [PGJPI]) were compared using PGSAS-45. Size of the remnant stomach was significantly larger in PGEG, and significantly smaller in PGJI and PGJPI (P 

  • Quality of life after total vs distal gastrectomy with Roux-en-Y reconstruction: Use of the Postgastrectomy Syndrome Assessment Scale-45
    World journal of gastroenterology, 2017
    Co-Authors: Masazumi Takahashi, Masanori Terashima, Yoshikazu Uenosono, Hiroshi Kawahira, Eishi Nagai, Shinichi Kinami, Yasuhiro Nagata, Masashi Yoshida, Keishiro Aoyagi, Yasuhiro Kodera
    Abstract:

    Quality of life after total vs distal gastrectomy with Roux-en-Y reconstruction: Use of the Postgastrectomy Syndrome Assessment Scale-45

  • assessment of postoperative quality of life following pylorus preserving gastrectomy and billroth i distal gastrectomy in gastric cancer patients results of the nationwide Postgastrectomy Syndrome assessment study
    Gastric Cancer, 2016
    Co-Authors: Junya Fujita, Masazumi Takahashi, Yasuhiro Kodera, Takashi Urushihara, Kazuaki Tanabe, Takeyoshi Yumiba, Hideo Matsumoto, Akinori Takagane, Chikara Kunisaki, Koji Nakada
    Abstract:

    Background Pylorus-preserving gastrectomy (PPG) is increasingly being used to treat early gastric cancer in the middle third of the stomach, with the hope of ameliorating postoperative dysfunction and improving quality of life (QOL). We evaluated symptoms of Postgastrectomy Syndrome (PGS) and QOL by means of a newly developed integrated questionnaire, the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45), and compared PPG with Billroth-I distal gastrectomy (DGBI).

  • long term quality of life comparison of total gastrectomy and proximal gastrectomy by Postgastrectomy Syndrome assessment scale pgsas 45 a nationwide multi institutional study
    Gastric Cancer, 2015
    Co-Authors: Nobuhiro Takiguchi, Shugo Ueda, Masazumi Takahashi, Masami Ikeda, Satoshi Inagawa, Takayuki Nobuoka, Manabu Ota, Yoshiaki Iwasaki, Nobuyuki Uchida, Yasuhiro Kodera
    Abstract:

    Although proximal gastrectomy (PG) is widely accepted as a function-preserving operation for early upper-third gastric cancer, postoperative disorders, such as reflux or gastric stasis, have often been pointed out. From the perspective of postoperative disorder, the choice of total gastrectomy (TG) or PG for such cancers is still controversial. By using the newly developed Postgastrectomy Syndrome Assessment Scale (PGSAS)-45, the quality of life after TG and PG was compared. The PGSAS-45 consists of 45 items composed of the SF-8 and GSRS scales and 22 new items. The main outcomes are measured by seven subscales (SS) covering symptoms, physical and mental component summary (SF-8), meals (amount and quality), ability to work, dissatisfaction for daily life, and change in body weight. A total of 2,368 eligible questionnaires were acquired from 52 institutions. From these, 393 patients with TG and 193 patients with PG were selected and compared. The PG was better than TG in terms of body weight loss (TG 13.8 % vs. PG 10.9 %; p = 0.003), necessity for additional meals (2.4 vs. 2.0; p < 0.001), diarrhea SS (2.3 vs. 2.0; p = 0.048), and dumping SS (2.3 vs. 2.0; p = 0.043). There were no differences in the other main outcome measures. Proximal gastrectomy appears to be valuable as a function-preserving procedure for early upper-third gastric cancer.

Masanori Terashima - One of the best experts on this subject based on the ideXlab platform.

  • Management of Late Postoperative Complications
    Surgery for Gastric Cancer, 2019
    Co-Authors: Masanori Terashima
    Abstract:

    Postgastrectomy Syndrome (PGS) occurs as a late postoperative complication in patients who have undergone gastrectomy. PGS is broadly divided into functional disorders and organic disorders. Functional disorders include dumping Syndrome, delayed gastric emptying, Roux stasis Syndrome, diarrhea, and constipation as well as anemia, metabolic bone disease, lactose intolerance, and fatty stool caused by digestion and absorption disorders. Organic disorders include reflux gastritis, reflux esophagitis, stromal ulcer, anastomotic stenosis, cholecystitis, cholecystolithiasis, afferent loop Syndrome, ileus, and internal hernia. The frequency of each case of PGS occurrence varies according to the extent of the gastrectomy and the reconstruction methods used. Surgeons must be familiar with the mechanism and treatment of PGS to try to prevent PGS as much as possible.

  • Quality of life after total vs distal gastrectomy with Roux-en-Y reconstruction: Use of the Postgastrectomy Syndrome Assessment Scale-45
    World journal of gastroenterology, 2017
    Co-Authors: Masazumi Takahashi, Masanori Terashima, Yoshikazu Uenosono, Hiroshi Kawahira, Eishi Nagai, Shinichi Kinami, Yasuhiro Nagata, Masashi Yoshida, Keishiro Aoyagi, Yasuhiro Kodera
    Abstract:

    Quality of life after total vs distal gastrectomy with Roux-en-Y reconstruction: Use of the Postgastrectomy Syndrome Assessment Scale-45

  • Evaluation of Postgastrectomy symptoms after distal gastrectomy with Billroth-I reconstruction using the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45)
    Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association, 2014
    Co-Authors: Kazunari Misawa, Masanori Terashima, Yoshikazu Uenosono, Shuichi Ota, Hiroaki Hata, Hiroshi Noro, Kentaro Yamaguchi, Hiroshi Yajima, Toshikatsu Nitta, Koji Nakada
    Abstract:

    Background Distal gastrectomy with Billroth-I reconstruction (DGBI) is the most commonly used treatment approach for gastric cancer patients in Japan. The aim of this study was to assess and elucidate the effect of different surgical DGBI techniques on Postgastrectomy Syndrome (PGS) using the Postgastrectomy Syndrome Assessment Scale-45 (PGSAS-45).

  • Postgastrectomy Syndrome Assessment Scale (PGSAS)-45 and Changes in Body Weight are Useful Tools for Evaluation of Reconstruction Methods Following Distal Gastrectomy
    Annals of Surgical Oncology, 2014
    Co-Authors: Masanori Terashima, Hiroshi Kawahira, Masashi Yoshida, Takashi Urushihara, Kazuaki Tanabe, Yoshiyuki Kawashima, Takao Inada, Hiroshi Okabe, Norimasa Fukushima, Koji Nakada
    Abstract:

    Background Billroth-I (BI) and Roux-en-Y (RY) are well-known reconstruction methods that are conducted following distal gastrectomy. However, the relative merits of these 2 methods are not well documented. The newly developed Postgastrectomy Syndrome Assessment Scale (PGSAS)-45 is an integrated questionnaire consisting of 45 items, including 8 items from the 8-Item Short-Form Health Survey (SF-8), 15 items from the Gastrointestinal Symptom Rating Scale, and 22 items selected by gastric surgeons. Postoperative QOL ratings were evaluated for each reconstruction method using PGSAS-45. Methods The PGSAS-45 questionnaire was distributed to 2,922 patients who underwent gastrectomies at 52 medical institutions. Among the questionnaires distributed, 2520 (86 %) were retrieved and 2368 (81 %) met eligibility requirements. Statistical analyses were conducted to compare 1,384 of the eligible questionnaires, including responses from patients who underwent BI ( n  = 909) and RY ( n  = 475) procedures. Results BI procedures were associated with significantly longer postoperative periods, a significantly greater size of gastric remnants, and a higher frequency of laparoscopic approaches and celiac branch preservation. Postoperative QOL analysis indicated that BI procedures resulted in significantly lower postoperative weight loss and significantly higher esophageal reflux symptoms than RY procedures. There was no significant difference between the two groups on other outcome measures. Conclusions Although weight loss was significantly lower following BI procedures, esophageal reflux symptoms were significantly higher. Either BI or RY procedures may be recommended based on the individual patient’s condition after distal gastrectomy. The newly developed QOL questionnaire, PGSAS-45 and changes in body weight proved useful for evaluation of QOL following gastrectomy.

  • Postgastrectomy Syndrome assessment scale pgsas 45 and changes in body weight are useful tools for evaluation of reconstruction methods following distal gastrectomy
    Annals of Surgical Oncology, 2014
    Co-Authors: Masanori Terashima, Hiroshi Kawahira, Masashi Yoshida, Takashi Urushihara, Kazuaki Tanabe, Yoshiyuki Kawashima, Takao Inada, Hiroshi Okabe, Norimasa Fukushima, Koji Nakada
    Abstract:

    Billroth-I (BI) and Roux-en-Y (RY) are well-known reconstruction methods that are conducted following distal gastrectomy. However, the relative merits of these 2 methods are not well documented. The newly developed Postgastrectomy Syndrome Assessment Scale (PGSAS)-45 is an integrated questionnaire consisting of 45 items, including 8 items from the 8-Item Short-Form Health Survey (SF-8), 15 items from the Gastrointestinal Symptom Rating Scale, and 22 items selected by gastric surgeons. Postoperative QOL ratings were evaluated for each reconstruction method using PGSAS-45. The PGSAS-45 questionnaire was distributed to 2,922 patients who underwent gastrectomies at 52 medical institutions. Among the questionnaires distributed, 2520 (86 %) were retrieved and 2368 (81 %) met eligibility requirements. Statistical analyses were conducted to compare 1,384 of the eligible questionnaires, including responses from patients who underwent BI (n = 909) and RY (n = 475) procedures. BI procedures were associated with significantly longer postoperative periods, a significantly greater size of gastric remnants, and a higher frequency of laparoscopic approaches and celiac branch preservation. Postoperative QOL analysis indicated that BI procedures resulted in significantly lower postoperative weight loss and significantly higher esophageal reflux symptoms than RY procedures. There was no significant difference between the two groups on other outcome measures. Although weight loss was significantly lower following BI procedures, esophageal reflux symptoms were significantly higher. Either BI or RY procedures may be recommended based on the individual patient’s condition after distal gastrectomy. The newly developed QOL questionnaire, PGSAS-45 and changes in body weight proved useful for evaluation of QOL following gastrectomy.