JSLS : Journal of the Society of Laparoendoscopic Surgeons
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Randomized Controlled Trial Comparative Study Clinical Trial
Correlation of the end-tidal PCO2 during laparoscopic surgery with the pH of the gastric juice.
During laparoscopy, the increase of the carbon dioxide tension may increase the synthesis of hydrochloric acid in the parietal cells of the stomach; the source of the secreted hydrogen ions is carbonic acid derived from the hydration of carbon dioxide. The present report tests this hypothesis by correlating the changes of end-tidal PCO2 (ETCO2) with the pH of the gastric juice in patients undergoing laparoscopic cholecystectomy. ⋯ During laparoscopy, the pH of the gastric juice is significantly decreased. This decrease is inversely related to the increase of ETCO2. The preoperative administration of the selective H2-blocker nizatidine can prevent the increase in gastric acidity and can result in a paradoxical increase of pH of the gastric juice.
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The source of chronic pelvic pain may be reproductive organ, urological, musculoskeletal-neurological, gastrointestinal, or myofascial. A psychological component almost always is a factor, whether as an antecedent event or presenting as depression as result of the pain. Surgical interventions for chronic pelvic pain include: 1) resection or vaporization of vulvar/vestibular tissue for human papillion virus (HPV) induced or chronic vulvodynia/vestibulitis; 2) cervical dilation for cervix stenosis; 3) hysteroscopic resection for intracavitary or submucous myomas or intracavitary polyps; 4) myomectomy or myolysis for symptomatic intramural, subserosal or pedunculated myomas; 5) adhesiolysis for peritubular and periovarian adhesions, and enterolysis for bowel adhesions, adhesiolysis for all thick adhesions in areas of pain as well as thin ahesions affecting critical structures such as ovaries and tubes; 6) salpingectomy or neosalpingostomy for symptomatic hydrosalpinx; 7) ovarian treatment for symptomatic ovarian pain; 8) uterosacral nerve vaporization for dysmenorrhea; 9) presacral neurectomy for disabling central pain primarily of uterine but also of bladder origin; 10) resection of endometriosis from all surfaces including removal from bladder and bowel as well as from the rectovaginal septal space. ⋯ Selected referrals to an integrated pain center with psychologic assistance together with judicious prescription of antidepressant drugs will likely benefit both women who respond to surgical intervention and those who do not. A maximum surgical effort must be expended to resect all endometriosis, restore normal pelvic anatomy, resect nerve fibers, and treat surgically accessible disease. In addition, it is important to provide patients with chronic pelvic pain sufficient psychologic support to overcome the effects of the condition, and to assist them with underlying psychologic disorders.
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How should the stable patient with penetrating abdominal or lower chest trauma be evaluated? Evolving trends have recently included the use of diagnostic laparoscopy. In September 1995 we instituted a protocol of diagnostic laparoscopy to identify those patients who could safely avoid surgical intervention. ⋯ Laparoscopy has become a useful and accurate diagnostic tool in the evaluation of abdominal trauma. Nevertheless, laparoscopy still carries a 20% nontherapeutic laparotomy rate. Additionally, significant intrathoracic injuries may be missed when laparoscopy is used as the primary technique to evaluate penetrating lower thoracic trauma.