Acta anaesthesiologica Sinica最新文献

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Endotracheal tube fire induced by electrocautery during tracheostomy--a case report. 气管切开术中电灼致气管管起火1例。
Acta anaesthesiologica Sinica Pub Date : 2002-12-01 DOI: 10.6955/AAS.200212.0209
Chih-Cheng Wu, Ching-Hui Shen, W. Ho
{"title":"Endotracheal tube fire induced by electrocautery during tracheostomy--a case report.","authors":"Chih-Cheng Wu, Ching-Hui Shen, W. Ho","doi":"10.6955/AAS.200212.0209","DOIUrl":"https://doi.org/10.6955/AAS.200212.0209","url":null,"abstract":"Airway fire resulting from ignition of the endotracheal tube (ETT) caused by electrocautery during tracheostomy is a severe and possibly fatal event, and should be avoided. An 88-year-old male because of respiratory failure received elective tracheostomy for ventilatory support on which prolonged dependence was anticipated. Unfortunately, flame was noted to jet out from the trachea incision just after a single burst of electrocautery to coagulate a bleeder in the trachea tissue nearby the incision. After primary management, including extinguishing the flame and evaluation of the tracheal injury by bronchoscope, a tracheostomy tube was inserted smoothly without causing hypoxemia or hemodynamic instability. The patient stood this ordeal of fire well without related sequelae and was returned from the intensive care unit (ICU) to the general ward two weeks later. From this accident, we recommend that, besides emphasis on lowering of the inspired oxygen concentration (FiO2) and careful use of electrocautery during the tracheostomy procedure, special attention should be paid to the integrality of ETT cuff. It serves as a barrier to prevent oxygen leaking out from the trachea to be exposed to the sparks of electrocautery while the surgical procedure is under way, and thus it plays a significant role in the avoidance of airway fire induced by electrocautery.","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 4 1","pages":"209-13"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71333206","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}
引用次数: 8
Oral clonidine reduces myocardial ischemia in patients with coronary artery disease undergoing noncardiac surgery. 口服可乐定可减少冠心病非心脏手术患者心肌缺血。
Acta anaesthesiologica Sinica Pub Date : 2002-12-01
Young-Chen Yin, Lok-Hi Chow, Cheng-Ming Tsao, Chi-Chun Chu, Mei-Yung Tsou, Kwok-Hon Chan, Shen-Kou Tsai
{"title":"Oral clonidine reduces myocardial ischemia in patients with coronary artery disease undergoing noncardiac surgery.","authors":"Young-Chen Yin,&nbsp;Lok-Hi Chow,&nbsp;Cheng-Ming Tsao,&nbsp;Chi-Chun Chu,&nbsp;Mei-Yung Tsou,&nbsp;Kwok-Hon Chan,&nbsp;Shen-Kou Tsai","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>To access the clinical effect of clonidine on reduction of myocardial ischemia events in patients with history of coronary artery disease undergoing noncardiac surgeries.</p><p><strong>Methods: </strong>Sixty ASA class III patients with coronary artery disease were allotted at random to two groups in a prospective, double-blind study to receive either clonidine (3 micrograms/kg) or placebo (control group) 90 minutes before arrival at the operating room. Continuous EKG monitoring (Holter monitor) was performed to analyze the ST segment in lead II, V2 and V5 during the preoperative (since late hours the night before operation), intraoperative and early postoperative periods (total monitoring time = 24 hours). The episode of myocardial ischemia defined as the magnitude of ST segment depression of at least 1 mm, occurring 60 ms after the J point and persisting for three minutes or more was recorded. Perioperative hemodynamic data were analyzed with two-way ANOVA with repeated measures. Student's t-test for unpaired data was used for analysis of demographics. Chi-square test was used for ST segment changes. Results are expressed as mean +/- SD and P < 0.05 was considered to be statistically significant.</p><p><strong>Results: </strong>In the control group, 9 patients (30%) were noted to have episodes of ischemia preoperatively, 7 patients (23.3%) intraoperatively, and 12 patients (40%) postoperatively. The occurrence of myocardial ischemia peaked in the early postoperative period (P < 0.05). On the contrary, in the clonidine group, 10 patients (33.3%) saw ischemic episodes preoperatively, 3 patients (10%) intraoperatively and 5 patients (16.7%) postoperatively. The incidence of myocardial ischemia in clonidine group was significantly lower than that in placebo group in intraoperative and postoperative periods. The mean arterial pressure was significantly lower in some clonidine-treated patients during perioperative periods (P < 0.05). A number of patients in clonidine group suffered from drowsiness (66.7%) after operation (P < 0.05), but they could be easily aroused. In regard to dryness of mouth, nausea and vomiting clonidine and control groups did not differ much (P > 0.05). Demerol consumption was significantly lower in clonidine group (43.7 +/- 4.6 mg) than in control group (76.3 +/- 3.7 mg, P < 0.05).</p><p><strong>Conclusions: </strong>We conclude that premedication with oral clonidine can significantly reduce the incidence of perioperative myocardial ischemia in patients with CAD undergoing noncardiac surgeries. The incidence of myocardial ischemia in these patients is rather high during perioperative period, which deserves our exceptional caution.</p>","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 4","pages":"197-203"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22255153","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}
引用次数: 0
Personnel exposure to waste sevoflurane and nitrous oxide during general anesthesia with cuffed endotracheal tube. 人员暴露于废弃七氟醚和氧化亚氮在全身麻醉与气管插管。
Acta anaesthesiologica Sinica Pub Date : 2002-12-01 DOI: 10.6955/AAS.200212.0185
Shou-Huang Li, Shou-Nan Li, Hui-Ya Shih, H. Yi, Chin-Yuan Chiang
{"title":"Personnel exposure to waste sevoflurane and nitrous oxide during general anesthesia with cuffed endotracheal tube.","authors":"Shou-Huang Li, Shou-Nan Li, Hui-Ya Shih, H. Yi, Chin-Yuan Chiang","doi":"10.6955/AAS.200212.0185","DOIUrl":"https://doi.org/10.6955/AAS.200212.0185","url":null,"abstract":"BACKGROUND\u0000Waste anesthetic gases may have adverse effects on the health of operating room personnel. To reduce the risk of exposure, the United States National Institute of Occupational Safety and Health (US-NIOSH) recommends a time-weighted average (TWA) of 25 ppm (part-per-million) for nitrous oxide (N2O) and a ceiling of 2 ppm for sevoflurane (SEV). This study investigated the concentrations of these two gases in the atmosphere of operating room to which the working personnel (anesthetists) were exposed during anesthetic practice.\u0000\u0000\u0000METHODS\u0000An extractive Fourier transform infrared (FTIR) spectrometer, with an optical path length of 10 meters, was used to monitor the concentrations of waste general anesthetics in the operating rooms. The FTIR in application could simultaneously determine the concentrations of several gases in a near real-time manner, which helped to accurately obtain the varying concentrations of gases in different anesthetic condition. The sampling Teflon tube of the FTIR was conveniently installed in the breathing zone of the anesthetic personnel to obtain the personal exposure concentrations of N2O and SEV.\u0000\u0000\u0000RESULTS\u0000Nitrous oxide (N2O) and sevoflurane (SEV) concentrations for five surgeries in four different operating rooms were determined. In normal condition during maintenance, the SEV concentrations as measured were less than 2 ppm but the average N2O concentration was greater than 25 ppm. In addition, in three abnormal or specific conditions, the N2O and SEV concentrations increased dramatically. Firstly, at the end of maintenance (right before emergence), peak concentrations of 751 ppm for N2O and 26 ppm for SEV were measured. These unusually high concentrations resulted from flushing the tubing of the anesthetic machine to speed up the emergence of wakefulness of the patient from anesthesia. Secondly, when the cuff of the endotracheal tube was not well inflated or unserviceable, peak concentrations of 631 ppm for N2O and 32 ppm for SEV were measured. Thirdly, malfunction of or loose connection (or disconnection) between the anesthetic machine and the exhaust venting system of operating theater almost doubled the N2O and SEV concentrations.\u0000\u0000\u0000CONCLUSIONS\u0000To decrease the exposure of the operating personnel to waste anesthetics, minimization of the use of N2O is recommended. Besides, the three extraordinary conditions as disclosed in this study were tubing flushing, illy managed endotracheal tube cuff and disconnection of scarvenging system, the first of which sometimes is unavoidable but the last two of which should be avoided.","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 4 1","pages":"185-90"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71333100","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}
引用次数: 21
Metastatic hepatocellular carcinoma of the right atrium causing right ventricular outflow tract obstruction during induction of anesthesia--a case report. 右心房转移性肝细胞癌致麻醉诱导时右心室流出道梗阻1例报告。
Acta anaesthesiologica Sinica Pub Date : 2002-12-01
Shih-Yen Peng, Chih-Cheng Wu, Chung-Pei Chang, Shih-Kuei Peng, Wai-Meng Ho
{"title":"Metastatic hepatocellular carcinoma of the right atrium causing right ventricular outflow tract obstruction during induction of anesthesia--a case report.","authors":"Shih-Yen Peng,&nbsp;Chih-Cheng Wu,&nbsp;Chung-Pei Chang,&nbsp;Shih-Kuei Peng,&nbsp;Wai-Meng Ho","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Metastatic hepatocellular carcinoma (HCC) to the right atrium occurs rarely and may lead to lethal perioperative complications. A 61-year-old female who was about to undergo operation for resection of a right intraatrial tumor thought possibly to be metastatic hepatocellular carcinoma met with sudden protrusion of the tumor from the right atrial wall that sank into the right ventricle during induction of anesthesia. Right ventricular outflow tract obstruction developed and was quickly diagnosed by transesophageal echocardiography. Emergent cardiopulmonary bypass was rushed on the spot and the surgery was completed smoothly. Here we discuss the possible causes of the event and we recommend that special attention should be paid to the anesthetic techniques and proper precaution should be taken in the face of such a risky surgery.</p>","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 4","pages":"205-8"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22255053","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}
引用次数: 0
The analgesic effect of nalbuphine and its long-acting prodrug, nalbuphine pivalate, in rats. 纳布啡及其长效前药哌酸纳布啡对大鼠的镇痛作用。
Acta anaesthesiologica Sinica Pub Date : 2002-12-01 DOI: 10.6955/AAS.200212.0191
Kuan-Ting Chen, O. Hu, S. Ho, Yu-Wen Chen, Jhi-Joung Wang
{"title":"The analgesic effect of nalbuphine and its long-acting prodrug, nalbuphine pivalate, in rats.","authors":"Kuan-Ting Chen, O. Hu, S. Ho, Yu-Wen Chen, Jhi-Joung Wang","doi":"10.6955/AAS.200212.0191","DOIUrl":"https://doi.org/10.6955/AAS.200212.0191","url":null,"abstract":"BACKGROUND\u0000Nalbuphine is an opioid-analgesic with agonist-antagonist properties. Recently, we have synthesized a nalbuphine prodrug, nalbuphine pivalate. The aim of the present study was to evaluate the analgesic effect and the analgesic duration of this prodrug.\u0000\u0000\u0000METHODS\u0000Forty-eight male Sprague-Dawley rats (4 groups, n = 12 in each group) were used. Rats in group 1 received nalbuphine HCl 25 mumol/kg (in saline) intramuscular injection; rats in group 2 received nalbuphine pivalate 25 mumol/kg (in sesame oil) intramuscular injection, whereas those in groups 3 and 4 received saline and sesame oil respectively. The analgesic effects of testing agents were evaluated using the cold ethanol tail-flick test (-30 degrees C).\u0000\u0000\u0000RESULTS\u0000Both nalbuphine HCl and nalbuphine pivalate demonstrated significant analgesic effects. The analgesic duration of nalbuphine HCl was 2 h while that of nalbuphine pivalate was 30 h.\u0000\u0000\u0000CONCLUSIONS\u0000Nalbuphine pivalate has a very long duration of analgesic action. This fascinating finding is worth further evaluation.","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 4 1","pages":"191-5"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71333107","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}
引用次数: 3
Long-term opioid treatment: the role of pain facilitatory system. 长期阿片类药物治疗:疼痛促进系统的作用。
Acta anaesthesiologica Sinica Pub Date : 2002-09-01 DOI: 10.6955/AAS.200209.0105
Chih-Shung Wong
{"title":"Long-term opioid treatment: the role of pain facilitatory system.","authors":"Chih-Shung Wong","doi":"10.6955/AAS.200209.0105","DOIUrl":"https://doi.org/10.6955/AAS.200209.0105","url":null,"abstract":"","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 3 1","pages":"105-7"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71333460","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}
引用次数: 0
Soft-tip intubating stylet. 软尖插管风格。
Acta anaesthesiologica Sinica Pub Date : 2002-09-01
Hwa-Kou King
{"title":"Soft-tip intubating stylet.","authors":"Hwa-Kou King","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Endotracheal intubation using a laryngoscope is the most rapid and usually the easiest means to ensure a patent airway. It has therefore earned its popularity in anesthesia and other acute health care practices. However, intubation by conventional technique is not always successful as at times direct vision of the glottis/vocal cords is impossible during laryngoscopy. Thus, acute airway obstruction remains a constant problem in all acute health care practices. To deal with this challenge, we have developed a new technique incorporating a modified Satin-Slip intubating stylet (Mallinckrodt Medical, St. Louis, MO, USA). First, cut the plastic sheath of the stylet at its distal end and push the sheath forward about one and a half inches. The soft plastic tip of the malleable stylet is then allowed to protrude from the endotracheal tube (ETT). When visualization of the glottic aperture is not possible, one simply places the soft plastic tip of the stylet under the epiglottis and advances it forward, and the tip will eventually enter the larynx. The ETT is then advanced off the stylet into the trachea. This new technique works very well in our experiences. It can be performed quickly with readily available inexpensive equipment. Our favorable experience leads us to believe it is one of the most promising additions to the current recommended alternatives.</p>","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 3","pages":"135-7"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22114628","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}
引用次数: 0
GTPCH is not a rate-limiting factor for hemorrhagic shock-induced hepatic nitric oxide biosynthesis. GTPCH不是出血性休克诱导的肝一氧化氮生物合成的限速因素。
Acta anaesthesiologica Sinica Pub Date : 2002-09-01
Ching-Rong Cheng, Chun-Jen Huang, Yen-Ta Lu, Yung-Wei Hsu, Peishan Tsai, Nuan-Yen Su, Jeffrey W Skimming
{"title":"GTPCH is not a rate-limiting factor for hemorrhagic shock-induced hepatic nitric oxide biosynthesis.","authors":"Ching-Rong Cheng,&nbsp;Chun-Jen Huang,&nbsp;Yen-Ta Lu,&nbsp;Yung-Wei Hsu,&nbsp;Peishan Tsai,&nbsp;Nuan-Yen Su,&nbsp;Jeffrey W Skimming","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Hemorrhagic shock upregulates inducible nitric oxide (NO) synthase (iNOS) expression and the resultant NO overproduction. Liver is one of the major organs that is responsible for increased NO production after trauma-hemorrhage and resuscitation. Guanosine triphosphate cyclohydrolase I (GTPCH) is the rate-limiting enzyme for the synthesis of tetrahydrobiopterin (BH4), a necessary co-factor for iNOS activity. Very little is known about the effects of hemorrhagic shock on hepatic GTPCH expression.</p><p><strong>Methods: </strong>Fifteen male Sprague-Dawley rats were randomly assigned to one of three groups, i.e. a sham instrumented (Sham) group, a sustained hemorrhagic shock (HS) group, and a hemorrhagic shock with resuscitation (HS/RES) group (n = 5 in each group). Controlled hemorrhagic shock was induced and the mean arterial pressure (MAP) was kept between 40-45 mmHg for sixty minutes in both HS and HS/RES groups. Then resuscitation with infusion of shed autologous blood and normal saline was performed in HS/RES group. Microdialysis probes were put in the liver and the right atrium for collection of serial samples. NO concentrations in dialysate samples were measured using chemiluminescence. Hepatic iNOS and GTPCH mRNA concentrations were analyzed using semiquantitative reverse transcription and polymerase chain reaction (RT-PCR).</p><p><strong>Results: </strong>Hemorrhagic shock induced both the hepatic and circulating NO biosynthesis as well as hepatic iNOS mRNA expression. Resuscitation with shed blood/normal saline normalized this upregulation. However, no difference was found in mean hepatic GTPCH mRNA concentrations between groups in this experiment.</p><p><strong>Conclusions: </strong>We provide the evidence that hemorrhagic shock-induced NO biosynthesis involves upregulation of iNOS transcription in liver tissue and GTPCH transcription is unaffected by either hemorrhagic shock or resuscitation. Furthermore, microdialysis is an ideal technique for serial sampling and that events can be followed.</p>","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 3","pages":"109-16"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22114731","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}
引用次数: 0
The effect of anesthetic techniques on hemostatic function in arthroscopic surgery: evaluation by thromboelastography. 麻醉技术对关节镜手术止血功能的影响:血栓弹性成像评价。
Acta anaesthesiologica Sinica Pub Date : 2002-09-01
Go-Shine Huang, Jen-Huei Chang, Meei-Shyuan Lee, Chia-Chun Wu, Shu-Pi Lin, Shinn-Long Lin, Chih-Shung Wong
{"title":"The effect of anesthetic techniques on hemostatic function in arthroscopic surgery: evaluation by thromboelastography.","authors":"Go-Shine Huang,&nbsp;Jen-Huei Chang,&nbsp;Meei-Shyuan Lee,&nbsp;Chia-Chun Wu,&nbsp;Shu-Pi Lin,&nbsp;Shinn-Long Lin,&nbsp;Chih-Shung Wong","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Anesthetic techniques are known to affect blood hemostasis, which may be responsible for the pathogenesis of postoperative venous thromboembolism. The purpose of this study was to evaluate the effect of general and spinal anesthesias on blood hemostasis using thromboelastography.</p><p><strong>Methods: </strong>Forty patients undergoing arthroscopic knee surgery were enrolled for study and randomly allocated to one of two groups, to receive either general (GA; n = 20) or spinal anesthesia (SA; n = 20). In addition to thromboelastography, prothrombin and activated partial-thromboplastin time, and haematocrit and platelet count were also examined concurrently. Blood was sampled and examined before anesthesia to provide the baseline data (Time 1). Three more evaluations were performed at different time, i.e., twenty minutes after induction of anesthesia and just prior to skin incision (Time 2), thirty minutes after skin incision (Time 3), and three hours after surgery (Time 4).</p><p><strong>Results: </strong>There were no intra- or inter-group differences noted as comparing the measured parameters obtained prior to, during, or three hours after surgery.</p><p><strong>Conclusions: </strong>From the present study, we do not find any individual anesthetic technique which would have effect on the hemostasis of patients who received diagnostic arthroscopic surgery.</p>","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 3","pages":"121-6"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"22114732","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}
引用次数: 0
GTPCH is not a rate-limiting factor for hemorrhagic shock-induced hepatic nitric oxide biosynthesis. GTPCH不是出血性休克诱导的肝一氧化氮生物合成的限速因素。
Acta anaesthesiologica Sinica Pub Date : 2002-09-01 DOI: 10.6955/AAS.200209.0109
Ching-Rong Cheng, Chun-Jen Huang, Yen-Ta Lu, Y. Hsu, P. Tsai, N. Su, J. Skimming
{"title":"GTPCH is not a rate-limiting factor for hemorrhagic shock-induced hepatic nitric oxide biosynthesis.","authors":"Ching-Rong Cheng, Chun-Jen Huang, Yen-Ta Lu, Y. Hsu, P. Tsai, N. Su, J. Skimming","doi":"10.6955/AAS.200209.0109","DOIUrl":"https://doi.org/10.6955/AAS.200209.0109","url":null,"abstract":"BACKGROUND\u0000Hemorrhagic shock upregulates inducible nitric oxide (NO) synthase (iNOS) expression and the resultant NO overproduction. Liver is one of the major organs that is responsible for increased NO production after trauma-hemorrhage and resuscitation. Guanosine triphosphate cyclohydrolase I (GTPCH) is the rate-limiting enzyme for the synthesis of tetrahydrobiopterin (BH4), a necessary co-factor for iNOS activity. Very little is known about the effects of hemorrhagic shock on hepatic GTPCH expression.\u0000\u0000\u0000METHODS\u0000Fifteen male Sprague-Dawley rats were randomly assigned to one of three groups, i.e. a sham instrumented (Sham) group, a sustained hemorrhagic shock (HS) group, and a hemorrhagic shock with resuscitation (HS/RES) group (n = 5 in each group). Controlled hemorrhagic shock was induced and the mean arterial pressure (MAP) was kept between 40-45 mmHg for sixty minutes in both HS and HS/RES groups. Then resuscitation with infusion of shed autologous blood and normal saline was performed in HS/RES group. Microdialysis probes were put in the liver and the right atrium for collection of serial samples. NO concentrations in dialysate samples were measured using chemiluminescence. Hepatic iNOS and GTPCH mRNA concentrations were analyzed using semiquantitative reverse transcription and polymerase chain reaction (RT-PCR).\u0000\u0000\u0000RESULTS\u0000Hemorrhagic shock induced both the hepatic and circulating NO biosynthesis as well as hepatic iNOS mRNA expression. Resuscitation with shed blood/normal saline normalized this upregulation. However, no difference was found in mean hepatic GTPCH mRNA concentrations between groups in this experiment.\u0000\u0000\u0000CONCLUSIONS\u0000We provide the evidence that hemorrhagic shock-induced NO biosynthesis involves upregulation of iNOS transcription in liver tissue and GTPCH transcription is unaffected by either hemorrhagic shock or resuscitation. Furthermore, microdialysis is an ideal technique for serial sampling and that events can be followed.","PeriodicalId":79312,"journal":{"name":"Acta anaesthesiologica Sinica","volume":"40 3 1","pages":"109-16"},"PeriodicalIF":0.0,"publicationDate":"2002-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71333473","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}
引用次数: 0
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