{"title":"Small-volume resuscitation. Crystalloid solutions for intravascular volume replacement.","authors":"D L Hancock","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>There is growing interest in the use of hypertonic crystalloid solutions for intravascular volume replacement. Such solutions rapidly restore nutrient blood flow to vital organs by a combination of increased perfusion pressure and vascular dilation. The addition of colloid to the solution appears to improve survival by limiting the tissue damage caused by ischemic injury and may avert the development of multisystem organ failure. Low cost and long shelf life make hypertonic solutions attractive for acute resuscitation after major trauma, but further investigations are warranted as to their efficacy and safety in the clinical setting.</p>","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 2","pages":"71-7"},"PeriodicalIF":0.0,"publicationDate":"1995-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21021988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The laryngeal mask airway. Safety, efficacy, and current use.","authors":"D K Springer, J S Jahr","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In 1983, the laryngeal mask airway (LMA) was introduced as a new airway device. It can be inserted without the aid of a laryngoscope or neuromuscular blockade. Compared with the face mask, the LMA allows for a more \"hands-free approach\" to airway management providing the anesthesiologist the freedom of not holding a mask. In addition, the LMA is more effective than the face mask, with or without a Guedel airway, during emergency resuscitation in situations where endotracheal intubation is difficult or not possible. The LMA seems to provide better oxygenation than the face mask; but unlike the endotracheal tube, it does not protect the airway from aspiration of gastric contents if regurgitation occurs. For this reason, it is believed that the LMA should not be used in place of an endotracheal tube during emergency rescue, but rather as an adjunct to airway management prior to intubation. It is possible that the risk of regurgitation with or without aspiration may be minimized if proper screening of patients is employed prior to use of the LMA. The current literature concerning its safety and efficacy is reviewed.</p>","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 2","pages":"65-9"},"PeriodicalIF":0.0,"publicationDate":"1995-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21022080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"NPO after midnight before elective surgery is no longer common practice for the majority of anesthesiologists.","authors":"A C McKinley, R L James, G R Mims","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>One thousand three hundred thirty-seven anesthesiologists randomly selected from the current American Society of Anesthesiologists' directory were surveyed to discover if their attitudes toward the policy of allowing preoperative patients nothing by mouth (NPO) have changed. One thousand forty surveys were returned. For each response to a survey question, the percentage of respondents giving that response was calculated. The 95% confidence intervals for these percentages were calculated by using the normal approximation of a binomial distribution. Chi-square analyses were used to explore possible relationships between demographic factors and NPO orders. Nearly all anesthesiologists surveyed used less than an 8-hour fast for elective pediatric surgery. At least 50% of the anesthesiologists surveyed no longer use NPO after midnight as an order for elective surgery for adults. Of the demographic variables, only geography and the question of whether or not a hospital was a teaching institution were statistically related to NPO practice.</p>","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 2","pages":"88-92"},"PeriodicalIF":0.0,"publicationDate":"1995-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21044021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R C Cork, E A Guillory, S Viswanathan, J E Eyrich, J F Heaton
{"title":"Effect of patient-controlled sedation on recovery from ambulatory monitored anesthesia care.","authors":"R C Cork, E A Guillory, S Viswanathan, J E Eyrich, J F Heaton","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Patient-controlled sedation (PCS) with propofol has been shown to be an effective means of conscious sedation during monitored anesthesia care. The purpose of this study was to assess both the intraoperative conduct and postoperative recovery of patients receiving propofol for conscious sedation, randomized to either PCS or anesthetist-controlled sedation (ACS). Forty-three patients scheduled for outpatient procedures requiring monitored anesthesia care were randomized to PCS or ACS. Both groups received an initial bolus of propofol 0.5 mg/kg and fentanyl 1 microgram/kg i.v., followed by an identical background infusion of propofol 50 micrograms/kg per minute. Subsequent doses of propofol 30 mg i.v. were either self-administered (PCS) or administered at the discretion of the anesthetist (ACS). Variables measuring hemodynamics, ventilation, saturation, and level of sedation were measured at baseline, after initial bolus of propofol and fentanyl, after skin incision, at last stitch, at admission to recovery, and 1 hour later. More propofol was used by the PCS group (P < 0.05). Finger-tapping was slower and responsiveness scores were lower in the PCS group at the end of the procedure (P < 0.05). More patients in the PCS group required oxygen supplementation (saturation < 90%) on admission to recovery (P < 0.05). At 1 hour after recovery admission, however, there were no differences between groups. These results indicate that when patients determine their own sedation, they are more sedated at the end of a procedure than when the anesthetist determines the level of sedation.</p>","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 2","pages":"94-100"},"PeriodicalIF":0.0,"publicationDate":"1995-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21044023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Do not resuscitate in the operating room: more than rights and wrongs.","authors":"P G Fine, S H Jackson","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 1","pages":"46-51"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21022079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A review of ventilatory modalities used in the intensive care unit.","authors":"R M Del Valle, R B Hecker","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Mechanical ventilation of the lungs is an integral component of modern medical practice in the operating room and intensive care unit settings. Most ventilators available in the operating room are capable of providing only controlled mechanical ventilation. With the increasing use of the microprocessor-controlled ventilators in the intensive care unit, there are now a wide variety of ventilatory types and mode choices available to the clinician. This paper summarizes some of the ventilatory choices currently available and mentions some of the newer and experimental modalities available in larger centers.</p>","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 1","pages":"23-30"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21022077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Cork, E. Guillory, S. Viswanathan, J. Eyrich, J. Heaton
{"title":"Effect of patient-controlled sedation on recovery from ambulatory monitored anesthesia care.","authors":"R. Cork, E. Guillory, S. Viswanathan, J. Eyrich, J. Heaton","doi":"10.1097/00000542-199409001-00031","DOIUrl":"https://doi.org/10.1097/00000542-199409001-00031","url":null,"abstract":"Patient-controlled sedation (PCS) with propofol has been shown to be an effective means of conscious sedation during monitored anesthesia care. The purpose of this study was to assess both the intraoperative conduct and postoperative recovery of patients receiving propofol for conscious sedation, randomized to either PCS or anesthetist-controlled sedation (ACS). Forty-three patients scheduled for outpatient procedures requiring monitored anesthesia care were randomized to PCS or ACS. Both groups received an initial bolus of propofol 0.5 mg/kg and fentanyl 1 microgram/kg i.v., followed by an identical background infusion of propofol 50 micrograms/kg per minute. Subsequent doses of propofol 30 mg i.v. were either self-administered (PCS) or administered at the discretion of the anesthetist (ACS). Variables measuring hemodynamics, ventilation, saturation, and level of sedation were measured at baseline, after initial bolus of propofol and fentanyl, after skin incision, at last stitch, at admission to recovery, and 1 hour later. More propofol was used by the PCS group (P < 0.05). Finger-tapping was slower and responsiveness scores were lower in the PCS group at the end of the procedure (P < 0.05). More patients in the PCS group required oxygen supplementation (saturation < 90%) on admission to recovery (P < 0.05). At 1 hour after recovery admission, however, there were no differences between groups. These results indicate that when patients determine their own sedation, they are more sedated at the end of a procedure than when the anesthetist determines the level of sedation.","PeriodicalId":80191,"journal":{"name":"The American journal of anesthesiology","volume":"22 2 1","pages":"94-100"},"PeriodicalIF":0.0,"publicationDate":"1994-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00000542-199409001-00031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61358468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}