The stereoselective hydrolysis of esmolol in whole blood and in its separated components from rat,rabbit and human was investigated.Blood esterase activities were variable in different species in the order of rat>r...The stereoselective hydrolysis of esmolol in whole blood and in its separated components from rat,rabbit and human was investigated.Blood esterase activities were variable in different species in the order of rat>rabbit>human.Rat plasma showed the high esterase activity and had no stereoselectivity to enantiomers.Rabbit red blood cell(RBC) membrane,RBC cytosol and plasma all hydrolyzed esmolol but with different esterase activity,whereas the hydrolysis in RBC membrane and cytosol showed significant stereoselectivity towards R-(+)-esmolol.Esterase in RBC cytosol from human blood mainly contributed to the esmolol hydrolysis,which was demonstrated with no stereoselctivity.Esterase in human plasma showed a low activity,but a remarkable stereoselectivity with R-(+)-esmolol.In addition,the protein concentration affected the hydrolysis behavior of esmolol in RBC suspension.Protein binding of esmolol enantiomers in human plasma,human serum albumin(HSA) and α;-acid glycoprotein(AGP) revealed that there was a significant difference in bound fractions between two enantiomers,especially for AGP.Our results indicated that the stereoselective protein binding might play a role in the different hydrolysis rates of esmolol enantiomers in human plasma.展开更多
Background In order to acquire a high quality image with a low radiation dose, prospective electrocardiogram (ECG)-triggered computed tomography coronary angiography (CTCA) requires a stable heart rate (HR) 〈 6...Background In order to acquire a high quality image with a low radiation dose, prospective electrocardiogram (ECG)-triggered computed tomography coronary angiography (CTCA) requires a stable heart rate (HR) 〈 65 beats/min. Esmolol has the advantage of reduc-ing HR. The objective of this article is to assess the value of intravenous esmolol treatment before prospective ECG-tr/ggered high-pitch spiral acquisition for CTCA. Methods From March 2013 to June 2013, 313 patients underwent prospective ECG-triggered CTCA. Two hundred and thirty two of them received esmolol before angiography. We retrospectively analyzed clinical characteristics, esmolol dose, radiation exposure dose, and the change in HR and blood pressure in these 232 patients. Results A total of 232 patients with a HR 〉 65 beats/rain before CTCA examination received intravenous esmolol treatment (mean dose of 57.26±15.39 rag), The mean initial HR (HR1), slowest HR (HR2), and the HR 30 min after HR2 (HR3) were 75.06± 5.59, 60.75 ±4.00, and 75.54 ± 5.96 beats/min, respectively (HR1 vs. HR2, P 〈 0.0001; HRI vs. HR3, P = 0.377). The mean time from esmolol administration to HR2 was 24.25 ± 4.97 s and the mean effective radiation dose was 2.28 ± 0.02 mSv. Conclusions HR could be rapidly controlled at an optimum level with intravenous esmolol before prospective ECG-triggered high-pitch spiral acquisition for CTCA. Consequently, the patients received a very low radiation dose.展开更多
To investigate the efficiency and safety of(β+α)-adrenoblocker esmolol for postoperative arterial hypertention(PAH)in patients with ischemic heart disease.The study included 25 patients(45-65 years,mean age 51.5...To investigate the efficiency and safety of(β+α)-adrenoblocker esmolol for postoperative arterial hypertention(PAH)in patients with ischemic heart disease.The study included 25 patients(45-65 years,mean age 51.5±7.3)who underwent coronary artery bypass grafting surgery with continuous blood purification(CPB).PAH developed during first post-op hours,all patients were ventilated with 2-4 scale sedation by RASS.All patients had arterial hypertension and were on constant therapy.Esmolol was administered IV push 20 mg within a minute.When required,injection was repeated in 5 min until full required effect.Maximum dose was 100 mg.For intraoperative treatment of hypertension 80 mg bolus within 30 sec was injected followed by 150 mg/kg/min infusion when required.Post-op dosage was administered similarly.Esmolol treatment was efficient in 82.6%of cases.Most frequent target AH was achieved using up to 40 and 60 mg in 20%and 36.9%of cases accordingly.Antihypertension effect maintained within 24 hours after injection.Esmolol cause moderate reduction of heart rate(4-7%),making it possible to use in case of hypertension without tachycardia.It is well tolerated and safe as no side effects were observed.The study showed high efficiency and safety of using esmolol to manage post-op arterial hypertension in cardiac surgery patients.展开更多
Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol,...Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol, 1.2 for terazosin were achieved when using 60 mmol/L gamma-CD and 60 mmoL/L DM-P-CD, respectively, in 50 mmol/L pH 2.5 sodium phosphate buffer.展开更多
Objective.To compare the effects of alfentanil and esmolol on hemodynamic and catecholamine response to tracheal intubation. Methods.Thirty five adult patients were randomly allocated to on...Objective.To compare the effects of alfentanil and esmolol on hemodynamic and catecholamine response to tracheal intubation. Methods.Thirty five adult patients were randomly allocated to one of three groups,Group A(control group),Group B(esmolol group)and Group C(alfentanil group).The patients received either 2 mg/kg esmolol(in Group B)or 30 μg/kg alfentanil(in Group C)before intubation.Tracheal intubation was performed with 4 mg/kg thiopental and 0 1 mg/kg vecuronium and 3% isoflurane.Systolic blood pressure(SBP),diastolic blood pressure(DBP),mean blood pressure(MBP),heart rate(HR),norepinephrine(NE),epinephrine(E)and dopamine(DA)were measured before and after intubation. Results.The control group had a baseline SBP of 149±23 mmHg while Groups B,C had a baseline SBP of 148±23,and 150±21mmHg,respectively(P>0 05).Three min after tracheal intubation,the control group SBP increased to 160±30 mmHg and Group B remained at the baseline level,147±5 mmHg,and Group C significantly decreased to 91±22 mmHg(P<0 01).Two min after intubation HR in Group B increased significantly but 3 min after intubation HR in Groups B and C were significantly lower than that of control group(P<0 05).NE in Groups A and B increased significantly to 5 75±3 51 and 6 75±3 30 nmol/L 3 min after intubation(P<0 01).In Group C,3 min after intubation NE was not significantly different from the baseline but E decreased significantly(P<0 01). Conclusion.2 mg/kg esmolol can moderate the hemodynamic response to tracheal intubation to a certain extent and 30μg/kg alfentanil can completely attenuate the hemodynamic and catecholamine responses.展开更多
目的分析艾司洛尔不良反应/事件发生特点,为临床安全用药提供参考。方法检索Web of Science、PubMed、Springer Link、中国知网、万方数据、维普网从建库至2023年10月31日中艾司洛尔致不良反应/事件个案报道,进行统计和分析,并基于美国...目的分析艾司洛尔不良反应/事件发生特点,为临床安全用药提供参考。方法检索Web of Science、PubMed、Springer Link、中国知网、万方数据、维普网从建库至2023年10月31日中艾司洛尔致不良反应/事件个案报道,进行统计和分析,并基于美国食品药品监督管理局(FDA)不良事件报告系统(FAERS)数据(2004年第1季度至2023年第4季度)进行挖掘验证其一致性。结果文献检索共纳入14篇个案报道,14例患者发生艾司洛尔不良反应/事件;男性10例,女性4例;年龄15~94岁,平均年龄59.79岁;发生时间最短为立即发生,最长9 d;不良反应主要有癫痫发作、谵妄、低钠血症、心脏骤停、严重室性心律失常、多巴酚丁胺应激超声心动图假阳性冠状动脉痉挛等。美国FAERS数据库中艾司洛尔不良事件报告208例,发生不良事件559例次,累及系统--器官分类(SOC)21个;不良事件信号强度排序为:交界异位性心动过速、心搏出量降低、无脉性电活动、外渗、热射病、心室机能障碍、室颤、输液部位渗出、心源性休克、冠状动脉痉挛等,与文献收集的病例报告一致性较高。结论艾司洛尔临床应用广泛,发生的不良反应/事件多为轻微且短暂,但有严重的且说明书未记载的不良反应/事件。建议临床使用时仍需谨慎,对不良反应/事件早期判断、及时停药、尽早给予相关对症处理。展开更多
目的探讨艾司洛尔在围术期应用的热点及研究趋势。方法检索Web of Science(WOS)数据库自建库起至2023年5月23日的相关文献,采用Citespace 5.8.R3软件,对涉及的国家/地区发文及合作情况,关键词共现、突现、聚类情况及文献共被引情况进行...目的探讨艾司洛尔在围术期应用的热点及研究趋势。方法检索Web of Science(WOS)数据库自建库起至2023年5月23日的相关文献,采用Citespace 5.8.R3软件,对涉及的国家/地区发文及合作情况,关键词共现、突现、聚类情况及文献共被引情况进行可视化分析。结果共获得有效文献422篇。研究始于1993年,呈波动上升趋势,2013年最多(24篇)。共涉及42个国家/地区,发文量排名前3的为美国(101篇)、日本(55篇)、中国(37篇);美国与其他国家合作最紧密,但多数国家/地区间的合作较少。共198种期刊发表了该领域的文章,Anesthesia and Analgesia(28篇)、Journal of Clinical Anesthesia(17篇)、Canadian Journal of Anesthesia-Journal Canadien D Anesthesie(14篇)是该领域研究发文量较高的3个期刊(期刊引证报告中均位列Q1区)。出现频次较高的关键词有“anes⁃thesia”(89次)、“surgery”(73次)、“remifentanil”(49次)、“propofol”(44次)、“sodium nitroprusside”(31次)、“cardiac surgery”(30次)等;共获得16个突现词,“lidocaine”为2018年至2023年突现度较高(3.67)的关键词;共有19个重要的聚类标签,主要集中于艾司洛尔药理作用及手术、艾司洛尔对比用药、联合使用麻醉剂等方面研究。文献总被引频次7885次,共被引文献的概括性主题包括non-cardiac surgery、eamolot pretreatment等。结论艾司洛尔围术期应用主要集中在心脏手术、心肺旁路手术等,艾司洛尔在非心脏手术中的应用、血流动力学响应、对麻醉药物作用的影响等是目前研究的热点。展开更多
Background: Previous studies have suggested that β1-receptor blockers benefit septic shock patients. This study aimed to determine whether β1-receptor blockers benefit tissue perfusion in sepsis and to identify par...Background: Previous studies have suggested that β1-receptor blockers benefit septic shock patients. This study aimed to determine whether β1-receptor blockers benefit tissue perfusion in sepsis and to identify parameters to reduce the risk of this drug in sepsis. Methods: Consecutive septic shock patients were recruited from the Intensive Care Unit of Peking Union Medical College Hospital within 48 h of diagnosis. All patients were hemodynamically stable and satisfactorily sedated with a heart rate (HR) 〉100 beats/rain. Esmolol therapy achieved the target HR of 10-15% lower than the baseline HR. Clinical and physiological data of patients were collected prospectively within 1 h prior to esmolol therapy and 2 h after achieving the targeted HR. Results: Sixty-three patients were recruited. After esmolol therapy, blood pressure was unaltered, whereas stroke volume (SV) was increased compared with betbre esmolol therapy (43.6 ± 22.7 vs. 49.9 ±23.7 ml, t = -2.3, P = 0.047). Tissue perfusion, including lactate levels (1.4 ± 0.8 vs. 1.1 ± 0.6 mmol/L, t = 2.6, P = 0.015) and the central venous-to-arterial carbon dioxide difference (5.6 ±3.3 vs. 4.3 ± 2.2 mmHg, t - 2.6 P = 0.016), was also significantly decreased after esmolol therapy. For patients with increased SV (n = 42), cardiac efficiency improved, and esmolol therapy had a lower risk for a decrease in cardiac output (CO). Therefore, pretreatment cardiac systolic and diastolic parameters with (n = 42)/without 01 = 21 ) an increase in SV were compared. Mitral lateral annular plane systolic excursion (MAPSEIat) in patients with increased SV was significantly higher than that in those without increased SV (1.3 ±0.3 vs. 1.1 ± 0.2 cm, t = 2.4, P = 0.034). Conclusions: SV of septic shock patients is increased is llowing esmolol therapy. Although CO is also decreased with HR, tissue perfusion is not worse.展开更多
Background The hemodynamics and oxygenation severely fluctuated during the offpump coronary artery bypass grafting (OPCABG) This study aimed at investigating whether or not nicardipine combined with esmolol (1∶10) ca...Background The hemodynamics and oxygenation severely fluctuated during the offpump coronary artery bypass grafting (OPCABG) This study aimed at investigating whether or not nicardipine combined with esmolol (1∶10) can maintain systemic and tissue oxygenation during OPCABGMethods Twenty patients scheduled for OPCABG were divided ramdomly into Group nicardipine (N) and Group nitroglycerine (X) respectively combined with esmolol (E) (Dosage ratio: 1 to 10) (Group N+E and Group X+E) with 10 patients in each group The mixed solution of N+E or X+E were titrated to maintain mean arterial blood pressure between 70 and 80 mmHg following anesthesia induction The variables of hemodynamics, arterial blood lactate content (Lac) and gastric intramucosal partial pressure of carbon dioxide were measured at the following time points: after induction of anesthesia (T1), prerevascularization (T2), grafting of left anterior descending (T3), right coronary descending (T4) and left coronary circumflexus branches (T5), postrevascularization (T6), the end of operation (T7) The delivery of oxygen (DO2), consumption of oxygen (VO2) and gastric intramucosal pH (pHi) were calculatedResults The cardiac index (CI) in Group N+E was significantly increased (P<005) as compared with T1 during OPCABG, while it was mildly decreased in Group X+E The stroke volumes at T4, T5 in Group N+E and at T3T6 in Group X+E were significantly decreased (P<005) The systemic vascular resistance indices in Group N+E were significantly decreased as compared with T1 (P<005) The heart rates in these two Groups were significantly elevated intraoperatively (P<005) The DO2 after the infusion of N+E was significantly increased (P<005) or leveled to T1, and the Lac were within the normal range But the DO2 in Group X+E was decreased throughout the procedure, reaching significant level at T5 (P<005), and the Lac was significantly increased beyond normal range (P<005) The pHi in Group N+E was maintained above 735 during OPCABG, while it was less than 735 from T4 to T7 in Group X+EConclusion Nicardipine combined with esmolol (1∶10) regimen may maintain systemic and tissue oxygenation during OPCABG展开更多
Background:Sevoflurane is widely used to anesthetize children because of its rapid action with minimal irritation of the airways.However,there is a high risk of agitation after emergence from anesthesia.Strabismus sur...Background:Sevoflurane is widely used to anesthetize children because of its rapid action with minimal irritation of the airways.However,there is a high risk of agitation after emergence from anesthesia.Strabismus surgery,in particular,can trigger agitation because patients have their eyes covered in the postoperative period.The aim of this study was to determine whether or not esmolol and lidocaine could decrease emergence agitation in children.Methods:Eighty-four patients aged 3 to 9 years undergoing strabismus surgery were randomly assigned to a control group(saline only),a group that received intravenous lidocaine 1.5 mg/kg,and a group that received intravenous esmolol 0.5 mg/kg and lidocaine 1.5 mg/kg.Agitation was measured using the objective pain score,Cole 5-point score,and Richmond Agitation Sedation Scale score at the end of surgery,on arrival in the recovery room,and 10 and 30 min after arrival.Results:The group that received the combination of esmolol and lidocaine showed lower OPS and RASS scores than the other two groups when patients awoke from anesthesia(OPS=0(0-4),RASS=-4[(-5)-1])and were transferred to the recovery room(OPS=0(0-8),RASS=-1[(-5)-3])(P<0.05).There was no significant difference in the severity of agitation among the three groups at other time points(P>0.05).Conclusions:When pediatric strabismus surgery is accompanied by sevoflurane anesthesia,an intravenous injection of esmolol and lidocaine could alleviate agitation until arrival in the recovery room.展开更多
基金supported by National Major Projects of Ministry Science and Technology of China(2011CB710800,2012ZX09506001-004)Zhejiang Education Department(Y200909571)
文摘The stereoselective hydrolysis of esmolol in whole blood and in its separated components from rat,rabbit and human was investigated.Blood esterase activities were variable in different species in the order of rat>rabbit>human.Rat plasma showed the high esterase activity and had no stereoselectivity to enantiomers.Rabbit red blood cell(RBC) membrane,RBC cytosol and plasma all hydrolyzed esmolol but with different esterase activity,whereas the hydrolysis in RBC membrane and cytosol showed significant stereoselectivity towards R-(+)-esmolol.Esterase in RBC cytosol from human blood mainly contributed to the esmolol hydrolysis,which was demonstrated with no stereoselctivity.Esterase in human plasma showed a low activity,but a remarkable stereoselectivity with R-(+)-esmolol.In addition,the protein concentration affected the hydrolysis behavior of esmolol in RBC suspension.Protein binding of esmolol enantiomers in human plasma,human serum albumin(HSA) and α;-acid glycoprotein(AGP) revealed that there was a significant difference in bound fractions between two enantiomers,especially for AGP.Our results indicated that the stereoselective protein binding might play a role in the different hydrolysis rates of esmolol enantiomers in human plasma.
文摘Background In order to acquire a high quality image with a low radiation dose, prospective electrocardiogram (ECG)-triggered computed tomography coronary angiography (CTCA) requires a stable heart rate (HR) 〈 65 beats/min. Esmolol has the advantage of reduc-ing HR. The objective of this article is to assess the value of intravenous esmolol treatment before prospective ECG-tr/ggered high-pitch spiral acquisition for CTCA. Methods From March 2013 to June 2013, 313 patients underwent prospective ECG-triggered CTCA. Two hundred and thirty two of them received esmolol before angiography. We retrospectively analyzed clinical characteristics, esmolol dose, radiation exposure dose, and the change in HR and blood pressure in these 232 patients. Results A total of 232 patients with a HR 〉 65 beats/rain before CTCA examination received intravenous esmolol treatment (mean dose of 57.26±15.39 rag), The mean initial HR (HR1), slowest HR (HR2), and the HR 30 min after HR2 (HR3) were 75.06± 5.59, 60.75 ±4.00, and 75.54 ± 5.96 beats/min, respectively (HR1 vs. HR2, P 〈 0.0001; HRI vs. HR3, P = 0.377). The mean time from esmolol administration to HR2 was 24.25 ± 4.97 s and the mean effective radiation dose was 2.28 ± 0.02 mSv. Conclusions HR could be rapidly controlled at an optimum level with intravenous esmolol before prospective ECG-triggered high-pitch spiral acquisition for CTCA. Consequently, the patients received a very low radiation dose.
文摘To investigate the efficiency and safety of(β+α)-adrenoblocker esmolol for postoperative arterial hypertention(PAH)in patients with ischemic heart disease.The study included 25 patients(45-65 years,mean age 51.5±7.3)who underwent coronary artery bypass grafting surgery with continuous blood purification(CPB).PAH developed during first post-op hours,all patients were ventilated with 2-4 scale sedation by RASS.All patients had arterial hypertension and were on constant therapy.Esmolol was administered IV push 20 mg within a minute.When required,injection was repeated in 5 min until full required effect.Maximum dose was 100 mg.For intraoperative treatment of hypertension 80 mg bolus within 30 sec was injected followed by 150 mg/kg/min infusion when required.Post-op dosage was administered similarly.Esmolol treatment was efficient in 82.6%of cases.Most frequent target AH was achieved using up to 40 and 60 mg in 20%and 36.9%of cases accordingly.Antihypertension effect maintained within 24 hours after injection.Esmolol cause moderate reduction of heart rate(4-7%),making it possible to use in case of hypertension without tachycardia.It is well tolerated and safe as no side effects were observed.The study showed high efficiency and safety of using esmolol to manage post-op arterial hypertension in cardiac surgery patients.
文摘Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol, 1.2 for terazosin were achieved when using 60 mmol/L gamma-CD and 60 mmoL/L DM-P-CD, respectively, in 50 mmol/L pH 2.5 sodium phosphate buffer.
文摘Objective.To compare the effects of alfentanil and esmolol on hemodynamic and catecholamine response to tracheal intubation. Methods.Thirty five adult patients were randomly allocated to one of three groups,Group A(control group),Group B(esmolol group)and Group C(alfentanil group).The patients received either 2 mg/kg esmolol(in Group B)or 30 μg/kg alfentanil(in Group C)before intubation.Tracheal intubation was performed with 4 mg/kg thiopental and 0 1 mg/kg vecuronium and 3% isoflurane.Systolic blood pressure(SBP),diastolic blood pressure(DBP),mean blood pressure(MBP),heart rate(HR),norepinephrine(NE),epinephrine(E)and dopamine(DA)were measured before and after intubation. Results.The control group had a baseline SBP of 149±23 mmHg while Groups B,C had a baseline SBP of 148±23,and 150±21mmHg,respectively(P>0 05).Three min after tracheal intubation,the control group SBP increased to 160±30 mmHg and Group B remained at the baseline level,147±5 mmHg,and Group C significantly decreased to 91±22 mmHg(P<0 01).Two min after intubation HR in Group B increased significantly but 3 min after intubation HR in Groups B and C were significantly lower than that of control group(P<0 05).NE in Groups A and B increased significantly to 5 75±3 51 and 6 75±3 30 nmol/L 3 min after intubation(P<0 01).In Group C,3 min after intubation NE was not significantly different from the baseline but E decreased significantly(P<0 01). Conclusion.2 mg/kg esmolol can moderate the hemodynamic response to tracheal intubation to a certain extent and 30μg/kg alfentanil can completely attenuate the hemodynamic and catecholamine responses.
文摘目的分析艾司洛尔不良反应/事件发生特点,为临床安全用药提供参考。方法检索Web of Science、PubMed、Springer Link、中国知网、万方数据、维普网从建库至2023年10月31日中艾司洛尔致不良反应/事件个案报道,进行统计和分析,并基于美国食品药品监督管理局(FDA)不良事件报告系统(FAERS)数据(2004年第1季度至2023年第4季度)进行挖掘验证其一致性。结果文献检索共纳入14篇个案报道,14例患者发生艾司洛尔不良反应/事件;男性10例,女性4例;年龄15~94岁,平均年龄59.79岁;发生时间最短为立即发生,最长9 d;不良反应主要有癫痫发作、谵妄、低钠血症、心脏骤停、严重室性心律失常、多巴酚丁胺应激超声心动图假阳性冠状动脉痉挛等。美国FAERS数据库中艾司洛尔不良事件报告208例,发生不良事件559例次,累及系统--器官分类(SOC)21个;不良事件信号强度排序为:交界异位性心动过速、心搏出量降低、无脉性电活动、外渗、热射病、心室机能障碍、室颤、输液部位渗出、心源性休克、冠状动脉痉挛等,与文献收集的病例报告一致性较高。结论艾司洛尔临床应用广泛,发生的不良反应/事件多为轻微且短暂,但有严重的且说明书未记载的不良反应/事件。建议临床使用时仍需谨慎,对不良反应/事件早期判断、及时停药、尽早给予相关对症处理。
文摘目的探讨艾司洛尔在围术期应用的热点及研究趋势。方法检索Web of Science(WOS)数据库自建库起至2023年5月23日的相关文献,采用Citespace 5.8.R3软件,对涉及的国家/地区发文及合作情况,关键词共现、突现、聚类情况及文献共被引情况进行可视化分析。结果共获得有效文献422篇。研究始于1993年,呈波动上升趋势,2013年最多(24篇)。共涉及42个国家/地区,发文量排名前3的为美国(101篇)、日本(55篇)、中国(37篇);美国与其他国家合作最紧密,但多数国家/地区间的合作较少。共198种期刊发表了该领域的文章,Anesthesia and Analgesia(28篇)、Journal of Clinical Anesthesia(17篇)、Canadian Journal of Anesthesia-Journal Canadien D Anesthesie(14篇)是该领域研究发文量较高的3个期刊(期刊引证报告中均位列Q1区)。出现频次较高的关键词有“anes⁃thesia”(89次)、“surgery”(73次)、“remifentanil”(49次)、“propofol”(44次)、“sodium nitroprusside”(31次)、“cardiac surgery”(30次)等;共获得16个突现词,“lidocaine”为2018年至2023年突现度较高(3.67)的关键词;共有19个重要的聚类标签,主要集中于艾司洛尔药理作用及手术、艾司洛尔对比用药、联合使用麻醉剂等方面研究。文献总被引频次7885次,共被引文献的概括性主题包括non-cardiac surgery、eamolot pretreatment等。结论艾司洛尔围术期应用主要集中在心脏手术、心肺旁路手术等,艾司洛尔在非心脏手术中的应用、血流动力学响应、对麻醉药物作用的影响等是目前研究的热点。
文摘Background: Previous studies have suggested that β1-receptor blockers benefit septic shock patients. This study aimed to determine whether β1-receptor blockers benefit tissue perfusion in sepsis and to identify parameters to reduce the risk of this drug in sepsis. Methods: Consecutive septic shock patients were recruited from the Intensive Care Unit of Peking Union Medical College Hospital within 48 h of diagnosis. All patients were hemodynamically stable and satisfactorily sedated with a heart rate (HR) 〉100 beats/rain. Esmolol therapy achieved the target HR of 10-15% lower than the baseline HR. Clinical and physiological data of patients were collected prospectively within 1 h prior to esmolol therapy and 2 h after achieving the targeted HR. Results: Sixty-three patients were recruited. After esmolol therapy, blood pressure was unaltered, whereas stroke volume (SV) was increased compared with betbre esmolol therapy (43.6 ± 22.7 vs. 49.9 ±23.7 ml, t = -2.3, P = 0.047). Tissue perfusion, including lactate levels (1.4 ± 0.8 vs. 1.1 ± 0.6 mmol/L, t = 2.6, P = 0.015) and the central venous-to-arterial carbon dioxide difference (5.6 ±3.3 vs. 4.3 ± 2.2 mmHg, t - 2.6 P = 0.016), was also significantly decreased after esmolol therapy. For patients with increased SV (n = 42), cardiac efficiency improved, and esmolol therapy had a lower risk for a decrease in cardiac output (CO). Therefore, pretreatment cardiac systolic and diastolic parameters with (n = 42)/without 01 = 21 ) an increase in SV were compared. Mitral lateral annular plane systolic excursion (MAPSEIat) in patients with increased SV was significantly higher than that in those without increased SV (1.3 ±0.3 vs. 1.1 ± 0.2 cm, t = 2.4, P = 0.034). Conclusions: SV of septic shock patients is increased is llowing esmolol therapy. Although CO is also decreased with HR, tissue perfusion is not worse.
文摘Background The hemodynamics and oxygenation severely fluctuated during the offpump coronary artery bypass grafting (OPCABG) This study aimed at investigating whether or not nicardipine combined with esmolol (1∶10) can maintain systemic and tissue oxygenation during OPCABGMethods Twenty patients scheduled for OPCABG were divided ramdomly into Group nicardipine (N) and Group nitroglycerine (X) respectively combined with esmolol (E) (Dosage ratio: 1 to 10) (Group N+E and Group X+E) with 10 patients in each group The mixed solution of N+E or X+E were titrated to maintain mean arterial blood pressure between 70 and 80 mmHg following anesthesia induction The variables of hemodynamics, arterial blood lactate content (Lac) and gastric intramucosal partial pressure of carbon dioxide were measured at the following time points: after induction of anesthesia (T1), prerevascularization (T2), grafting of left anterior descending (T3), right coronary descending (T4) and left coronary circumflexus branches (T5), postrevascularization (T6), the end of operation (T7) The delivery of oxygen (DO2), consumption of oxygen (VO2) and gastric intramucosal pH (pHi) were calculatedResults The cardiac index (CI) in Group N+E was significantly increased (P<005) as compared with T1 during OPCABG, while it was mildly decreased in Group X+E The stroke volumes at T4, T5 in Group N+E and at T3T6 in Group X+E were significantly decreased (P<005) The systemic vascular resistance indices in Group N+E were significantly decreased as compared with T1 (P<005) The heart rates in these two Groups were significantly elevated intraoperatively (P<005) The DO2 after the infusion of N+E was significantly increased (P<005) or leveled to T1, and the Lac were within the normal range But the DO2 in Group X+E was decreased throughout the procedure, reaching significant level at T5 (P<005), and the Lac was significantly increased beyond normal range (P<005) The pHi in Group N+E was maintained above 735 during OPCABG, while it was less than 735 from T4 to T7 in Group X+EConclusion Nicardipine combined with esmolol (1∶10) regimen may maintain systemic and tissue oxygenation during OPCABG
文摘Background:Sevoflurane is widely used to anesthetize children because of its rapid action with minimal irritation of the airways.However,there is a high risk of agitation after emergence from anesthesia.Strabismus surgery,in particular,can trigger agitation because patients have their eyes covered in the postoperative period.The aim of this study was to determine whether or not esmolol and lidocaine could decrease emergence agitation in children.Methods:Eighty-four patients aged 3 to 9 years undergoing strabismus surgery were randomly assigned to a control group(saline only),a group that received intravenous lidocaine 1.5 mg/kg,and a group that received intravenous esmolol 0.5 mg/kg and lidocaine 1.5 mg/kg.Agitation was measured using the objective pain score,Cole 5-point score,and Richmond Agitation Sedation Scale score at the end of surgery,on arrival in the recovery room,and 10 and 30 min after arrival.Results:The group that received the combination of esmolol and lidocaine showed lower OPS and RASS scores than the other two groups when patients awoke from anesthesia(OPS=0(0-4),RASS=-4[(-5)-1])and were transferred to the recovery room(OPS=0(0-8),RASS=-1[(-5)-3])(P<0.05).There was no significant difference in the severity of agitation among the three groups at other time points(P>0.05).Conclusions:When pediatric strabismus surgery is accompanied by sevoflurane anesthesia,an intravenous injection of esmolol and lidocaine could alleviate agitation until arrival in the recovery room.