Topographical Electrogastrograms After Radical Esophagectomy with Colonic Replacement

Homma, Shinsuke; Watanabe, Naozumi; Matsuo, Hitoshi; Maruta, Tomoaki; Hasegawa, Jun; Okamoto, Hiroyuki; Suda, Takeyasu; Hatakeyama, Katsuyoshi

doi:10.1007/s00595-003-2550-2

Cited by 4 publications

(8 citation statements)

References 12 publications

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“…The origin of the EGG activity below 2.4 cpm seems still not clear, however, the bases of the colonic origin are as follows. The spectral frequencies and instability factors of the 1 cpm group of the colon replacement were higher than the preoperative controls (Homma et al, 2003) as shown in this study. The 24-hour ambulatory pressure waves in the replaced colon were found to be largely in the 0-2.4 cpm component (Watanabe et al, 2004).…”

Section: Discussionsupporting

confidence: 59%

“…In other words, the spectral frequency of the gastric myoelectric activity of EGG, overlaps the colonic frequency (Amaris et al, 2003). The isopower mapping or topographical EGGs based on power amplitudes of five spectral groups helped to visualize the above concept and the position of the stomach, the small intestine and the colon in a dorso-ventral plane (Homma, 1997(Homma, , 2005Homma et al, 1999;2003). The origin of the EGG activity below 2.4 cpm seems still not clear, however, the bases of the colonic origin are as follows.…”

Section: Discussionmentioning

confidence: 99%

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Local differences in electrogastrograms recorded from 16 locations on the human thoraco-abdominal surface

Homma

2009

J. Smooth Muscle Res.

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Local differences in the electrogastrographic (EGG) indices were studied. The indices include the spectral frequency, the instability factor (IF) of the spectral frequency, and the power content in addition to the usual power amplitude of 5 frequency groups as follows: the 1-cpm group (0-2.4), the 3-cpm group (2.5-4.9), the 6-cpm group (5.0-7.4), the 8-cpm group (7.5-9.9), and the 10-cpm group (10.0-12.9). In general, the infraumbilical frequency and the IF of both of the 3-and 6-cpm groups were higher than those of the epigastric frequencies. In contrast, both the epigastric power amplitude and the power content of the 3-and 6-cpm groups were higher than those of the infraumbilical ones. Mapping of the absolute power amplitude and superimposing the maximal power foci further visualized and clarified the local differences in the epigastric and infraumbilical myoelectrical activity, especially of gastric and colonic activity.

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Section: Discussionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Local differences in electrogastrograms recorded from 16 locations on the human thoraco-abdominal surface

Homma

2009

J. Smooth Muscle Res.

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“…There was a wide range of both ages and the time since surgery in the patients, depending on the type of surgery; TG (67.6 ± 11.8 years old, 63.0 ± 67 postoperative months, n=9) due to gastric cancer, TC (39 ± 13 years old, 43.3 ± 29.3 postoperative months, n=10) due to ulcerative colitis , DG (Birlloth I, 72 ± 3.3 years old, 115 ± 31.7 postoperative months, n=12) due to gastric cancer, and CR (without residual stomach: 66.2 ± 4.3 years old, 64.0 ± 33.7 postoperative months, n=5) due to esophageal and gastric cancer. Previous data from the 27 locations were added to the analysis of the superimposed topographic EGG maps for clearer demonstration of the control and the surgery-associated differences, including a TG (n=7), and TC (n=7) (Homma et al, 1999) and DG (n=12, after Homma et al, 2008 and n=10, unpublished data) and CR (n=6) (Homma et al, 2003). Therefore, the total case number was 16 for TG, 17 for TC, 22 for DG and 11 for CR (Fig.…”

Section: Control Subjects Patients and Methodsmentioning

confidence: 99%

“…Local differences are observed in the topograhic electrogastrographic (EGG) maps recorded at 27 different thoraco-abdominal locations in normal control subjects as well as in subjects who have undergone total gastrectomy (TG), total colectomy (TC), distal gastrectomy (DG) and colonic replacement (CR) surgery (Homma et al, 1999;Homma et al, 2003;Homma, 2005;2009). Previous studies have compared the average power amplitudes of the 27 channels in 5 spectral Correspondence to: Dr. Shinji Homma, Professor emeritus, Takaido-higashi 3-22-7, Suginami-Ku, Tokyo 168-0072, Japan Phone: +81-3-3332-1483 Fax: +81-3-3332-1483 e-mail: sjnhomma@jcom.home.ne.jp groups (Homma et al, 1999, Homma et al, 2003, and the average-EGG indices of the spectral frequencies and both their instability factor (IF) and power amplitudes of the epigastric (mean of channels 3, 4, 5 and 6), supraumbilical (mean of 7, 8 and 9), and infraumbilical locations (mean of channels 12, 13 and 14) (Homma, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have compared the average power amplitudes of the 27 channels in 5 spectral Correspondence to: Dr. Shinji Homma, Professor emeritus, Takaido-higashi 3-22-7, Suginami-Ku, Tokyo 168-0072, Japan Phone: +81-3-3332-1483 Fax: +81-3-3332-1483 e-mail: sjnhomma@jcom.home.ne.jp groups (Homma et al, 1999, Homma et al, 2003, and the average-EGG indices of the spectral frequencies and both their instability factor (IF) and power amplitudes of the epigastric (mean of channels 3, 4, 5 and 6), supraumbilical (mean of 7, 8 and 9), and infraumbilical locations (mean of channels 12, 13 and 14) (Homma, 2005). Comparison of the averaged data did not reveal any clear local differences in the EGG indices (Homma et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Local differences in electrogastrographic indices associated with total gastrectomy, total colectomy, distal gastrectomy and colonic replacement

Homma

Kobayashi

Kosugi

et al. 2010

J Smooth Muscle Res

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The electrogastrographic indices of spectral frequency, instability factor (IF), power amplitude, and power content (%) were compared between control subjects (C), and subjects following either total gastrectomy (TG), total colectomy (TC), distal gastrectomy (DG) or colonic replacement surgery (CR). In the fasting state, both the spectral frequency and IF of the epigastric 3-cycle per minute (cpm) group of the TC subjects were significantly lower than those indices in C, TG, DG, and CR subjects. In contrast, the power amplitude and power content of the epigastric 3-cpm group of both TG and DG subjects were significantly lower than those of C and TC subjects. The original epigastric waves of TG had remarkably high amplitudes. Furthermore, the absolute power of the epigastric 3-cpm of the TC subjects was 10 times higher than that in either the C or TG subjects. These results may be partially explained by the assumption that the recorded epigastric electrogastrography (EGG) is mainly contributed to by the 3-cpm myoelectric activity of the stomach and colon, while the infraumbilical EGG is mainly contributed to by the 3-cpm myoelectric activity of the colon. Topographic EGG maps visually supported these assumptions.

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Effects of propofol, dexmedetomidine, and midazolam on postoperative cognitive dysfunction in elderly patients

Luo

Chen

et al. 2019

Chinese Medical Journal

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Background: Postoperative cognitive dysfunction (POCD) is a serious complication after surgery, especially in elderly patients. The anesthesia technique is a potentially modifiable risk factor for POCD. This study assessed the effects of dexmedetomidine, propofol or midazolam sedation on POCD in elderly patients who underwent hip or knee replacement under spinal anesthesia. Methods: The present study was a prospective randomized controlled preliminary trial. From July 2013 and December 2014, a total of 164 patients aged 65 years or older who underwent hip or knee arthroplasty at China-Japan Friendship Hospital and 41 non-surgical controls were included in this study. Patients were randomized in a 1:1:1 ratio to 3 sedative groups. All the patients received combined spinal-epidural anesthesia (CSEA) with midazolam, dexmedetomidine or propofol sedation. The sedative dose was adjusted to achieve light sedation (bispectral index[BIS] score between 70 and 85). All study participants and controls completed a battery of 5 neuropsychological tests before and 7 days after surgery. One year postoperatively, the patients and controls were interviewed over the telephone using the Montreal cognitive assessment 5-minute protocol. Results: In all, 60 of 164 patients (36.6%) were diagnosed with POCD 7 days postoperatively, POCD incidence in propofol group was significantly lower than that in dexmedetomidine and midazolam groups (18.2% vs. 40.0%, 51.9%, χ 2 = 6.342 and 13.603, P = 0.012 and < 0.001). When the patients were re-tested 1 year postoperatively, the incidence of POCD was not significantly different among the 3 groups (14.0%, 10.6% vs. 14.9%, χ 2 = 0.016 and 0.382, P = 0.899 and 0.536). Conclusion: Among dexmedetomidine, propofol and midazolam sedation in elderly patients, propofol sedation shows a significant advantage in term of short-term POCD incidence.

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Topographical Electrogastrograms After Radical Esophagectomy with Colonic Replacement

Cited by 4 publications

References 12 publications

Local differences in electrogastrograms recorded from 16 locations on the human thoraco-abdominal surface

Local differences in electrogastrograms recorded from 16 locations on the human thoraco-abdominal surface

Local differences in electrogastrographic indices associated with total gastrectomy, total colectomy, distal gastrectomy and colonic replacement

Effects of propofol, dexmedetomidine, and midazolam on postoperative cognitive dysfunction in elderly patients

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