1.A Case of Transurethral Inversion of the Bladder and Urinary Incontinence after a Transvaginal Mesh Operation for Complete Prolapse of the Vaginal Stump Cured by Urethroplasty and a Rectus Muscle Fascia Sling Procedure
Osamu NISHIZAWA ; Naoki HIRABAYASHI ; Tadayuki KIKUKAWA
Journal of the Japanese Association of Rural Medicine 2016;65(2):250-253
The patient was a 66-year-old woman who had a hysterectomy for myoma uteri 20 years before presenting to us, followed by vaginal stump prolapse about 10 years later. At the age of 64 years, she developed dysuria and vaginal stump prolapse and visited the urology clinic. An indwelling urethral catheter was inserted and surgical treatment was recommended. In January 2013, she underwent a complete transvaginal mesh operation for vaginal stump prolapse. Postoperatively, the prolapse was cured but stress urinary incontinence occurred. In June 2013, transobuturator tape was used to treat urinary incontinence. Three months later, transurethral inversion of the bladder became obvious associated with pain, and severe incontinence recurred. In November 2014, urethroplasty and a rectus muscle fascia sling procedure were performed. The transurethral inversion of the bladder was cured and the patient could void without urinary incontinence.
2.Animal models for studying penile hemodynamics.
Hiroya MIZUSAWA ; Osamu ISHIZUKA ; Osamu NISHIZAWA
Asian Journal of Andrology 2002;4(3):225-228
Animal models for the study of erectile function monitoring the changes in intracavernous pressure (ICP) during penile erection was reviewed. The development of new models using small commercially-available experimental animals, rats and mice, in the last decade facilitated in vivo investigation of erectile physiology. The technique enabled to evaluate even subtle erectile responses by analyzing ICP and systemic blood pressure. Moreover, the method has been well improved and studies using conscious animal models without the influence of any drug or anesthesia are more appropriate in exploring the precise physiological and pharmacological mechanisms in erection. Also, more natural and physiological sexual arousal instead of electrical or pharmacological stimulation is desirable in most of the studies. This article reviewed the development of ICP studies in rats and mice.
Animals
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Disease Models, Animal
;
Erectile Dysfunction
;
physiopathology
;
Male
;
Penile Erection
;
physiology
;
Penis
;
blood supply
;
physiopathology
;
Regional Blood Flow
;
physiology
4.Risk Factors for Prolonged Hospital Stay after Endoscopy
Toshihiro NISHIZAWA ; Shuntaro YOSHIDA ; Osamu TOYOSHIMA ; Tatsuya MATSUNO ; Masataka IROKAWA ; Toru ARANO ; Hirotoshi EBINUMA ; Hidekazu SUZUKI ; Takanori KANAI ; Kazuhiko KOIKE
Clinical Endoscopy 2021;54(6):851-856
Background/Aims:
The recovery room used after endoscopy has limited capacity, and an efficient flow of the endoscopy unit is desired. We investigated the duration of hospital stay after endoscopy and the risk factors for prolonged hospital stay among outpatients.
Methods:
We retrospectively studied consecutive patients who underwent esophagogastroduodenoscopy or colonoscopy at the Toyoshima Endoscopy Clinic. We collected data on age, sex, body weight, midazolam and pethidine dosage, respiratory depression during endoscopy, and duration of hospital stay after endoscopy (scope out to check out). Risk factors for prolonged hospital stay (>100 minutes) were identified using multiple logistic regression analysis.
Results:
We enrolled 3,898 patients, including 3,517 (90.2%) patients tested under sedation and 381 (9.8%) patients tested without sedation. Overall, 442 (11.3%) patients had prolonged stay (>100 min). The mean time difference between sedation group and non-sedation group was 44.2 minutes for esophagogastroduodenoscopy and 39.1 minutes for colonoscopy. Age (odds ratio [OR], 1.025; 95% confidence interval [CI], 1.014−1.036), female sex (OR, 1.657; 95% CI, 1.220−2.249), and midazolam dose (OR, 1.019; 95% CI, 1.013−1.026) were independently associated with prolonged hospital stay after esophagogastroduodenoscopy, with similar results for colonoscopy.
Conclusions
Old age, female sex, and midazolam dose were independent risk factors for prolonged hospital stay after endoscopy.
5.Endoscopic Diagnosis of Early Gastric Cancer and High-Risk Gastritis
Hidekazu SUZUKI ; Masaya SANO ; Toshihiro NISHIZAWA ; Osamu TOYOSHIMA
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):311-318
Many differentiated and undifferentiated gastric cancers are associated with Helicobacter pylori infection. Therefore, as a primary prevention method, the early diagnosis of H. pylori gastritis and eradication of these bacteria can prevent gastric cancer. As a secondary prevention method, the early diagnosis of gastric cancer and endoscopic treatment can also contribute to reducing overall mortality. Gastric mucosal atrophy and intestinal metaplasia are important findings in patients with H. pylori gastritis. The accurate diagnosis of other characteristic findings is also important to comprehensively assess gastric cancer risk. The identification of precancerous lesions and early gastric cancer by evaluating endoscopic gastric cancer risk scores, based on the Kyoto classification of gastritis, is similarly important. Recently, endoscopic image evaluation systems equipped with artificial intelligence have been developed to complement the diagnostic abilities of individual endoscopists and reduce interobserver variability; future developments in this area are highly anticipated.
6.Endoscopic Diagnosis of Early Gastric Cancer and High-Risk Gastritis
Hidekazu SUZUKI ; Masaya SANO ; Toshihiro NISHIZAWA ; Osamu TOYOSHIMA
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):311-318
Many differentiated and undifferentiated gastric cancers are associated with Helicobacter pylori infection. Therefore, as a primary prevention method, the early diagnosis of H. pylori gastritis and eradication of these bacteria can prevent gastric cancer. As a secondary prevention method, the early diagnosis of gastric cancer and endoscopic treatment can also contribute to reducing overall mortality. Gastric mucosal atrophy and intestinal metaplasia are important findings in patients with H. pylori gastritis. The accurate diagnosis of other characteristic findings is also important to comprehensively assess gastric cancer risk. The identification of precancerous lesions and early gastric cancer by evaluating endoscopic gastric cancer risk scores, based on the Kyoto classification of gastritis, is similarly important. Recently, endoscopic image evaluation systems equipped with artificial intelligence have been developed to complement the diagnostic abilities of individual endoscopists and reduce interobserver variability; future developments in this area are highly anticipated.
7.Endoscopic Diagnosis of Early Gastric Cancer and High-Risk Gastritis
Hidekazu SUZUKI ; Masaya SANO ; Toshihiro NISHIZAWA ; Osamu TOYOSHIMA
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):311-318
Many differentiated and undifferentiated gastric cancers are associated with Helicobacter pylori infection. Therefore, as a primary prevention method, the early diagnosis of H. pylori gastritis and eradication of these bacteria can prevent gastric cancer. As a secondary prevention method, the early diagnosis of gastric cancer and endoscopic treatment can also contribute to reducing overall mortality. Gastric mucosal atrophy and intestinal metaplasia are important findings in patients with H. pylori gastritis. The accurate diagnosis of other characteristic findings is also important to comprehensively assess gastric cancer risk. The identification of precancerous lesions and early gastric cancer by evaluating endoscopic gastric cancer risk scores, based on the Kyoto classification of gastritis, is similarly important. Recently, endoscopic image evaluation systems equipped with artificial intelligence have been developed to complement the diagnostic abilities of individual endoscopists and reduce interobserver variability; future developments in this area are highly anticipated.
8.Endoscopic Diagnosis of Early Gastric Cancer and High-Risk Gastritis
Hidekazu SUZUKI ; Masaya SANO ; Toshihiro NISHIZAWA ; Osamu TOYOSHIMA
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):311-318
Many differentiated and undifferentiated gastric cancers are associated with Helicobacter pylori infection. Therefore, as a primary prevention method, the early diagnosis of H. pylori gastritis and eradication of these bacteria can prevent gastric cancer. As a secondary prevention method, the early diagnosis of gastric cancer and endoscopic treatment can also contribute to reducing overall mortality. Gastric mucosal atrophy and intestinal metaplasia are important findings in patients with H. pylori gastritis. The accurate diagnosis of other characteristic findings is also important to comprehensively assess gastric cancer risk. The identification of precancerous lesions and early gastric cancer by evaluating endoscopic gastric cancer risk scores, based on the Kyoto classification of gastritis, is similarly important. Recently, endoscopic image evaluation systems equipped with artificial intelligence have been developed to complement the diagnostic abilities of individual endoscopists and reduce interobserver variability; future developments in this area are highly anticipated.
9.Endoscopic Diagnosis of Early Gastric Cancer and High-Risk Gastritis
Hidekazu SUZUKI ; Masaya SANO ; Toshihiro NISHIZAWA ; Osamu TOYOSHIMA
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):311-318
Many differentiated and undifferentiated gastric cancers are associated with Helicobacter pylori infection. Therefore, as a primary prevention method, the early diagnosis of H. pylori gastritis and eradication of these bacteria can prevent gastric cancer. As a secondary prevention method, the early diagnosis of gastric cancer and endoscopic treatment can also contribute to reducing overall mortality. Gastric mucosal atrophy and intestinal metaplasia are important findings in patients with H. pylori gastritis. The accurate diagnosis of other characteristic findings is also important to comprehensively assess gastric cancer risk. The identification of precancerous lesions and early gastric cancer by evaluating endoscopic gastric cancer risk scores, based on the Kyoto classification of gastritis, is similarly important. Recently, endoscopic image evaluation systems equipped with artificial intelligence have been developed to complement the diagnostic abilities of individual endoscopists and reduce interobserver variability; future developments in this area are highly anticipated.
10.The "Two-Sword Fencing" Technique in Endoscopic Submucosal Dissection.
Toshihiro NISHIZAWA ; Toshio URAOKA ; Yasutoshi OCHIAI ; Hidekazu SUZUKI ; Osamu GOTO ; Ai FUJIMOTO ; Tadateru MAEHATA ; Takanori KANAI ; Naohisa YAHAGI
Clinical Endoscopy 2015;48(1):85-86
No abstract available.