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1.
目的探讨左胸前外侧小切口不停跳冠状动脉旁路移植术的效果.方法26例单支或2支血管病变经左胸前外侧小切口进胸,其中14例直视下游离乳内动脉,12例在胸腔镜辅助下游离,肝素化后切开心包,显露病变的靶血管,心脏跳动下行冠状动脉旁路移植术.结果26例手术顺利完成,22例旁路移植1支,4例旁路移植2支(1例行序贯吻合,3例桡动脉与乳内动脉行"Y"形吻合).术后无死亡及严重并发症.26例随访3个月~3年,平均16.8月,无心绞痛复发,心功能Ⅰ级18例,Ⅱ级8例.结论左前外侧小切口不停跳冠状动脉旁路移植术主要适用于前降支单支病变者,对于合并高危因素,不宜行常规冠状动脉旁路移植的多支血管病变病人亦适用.  相似文献   

2.
目的总结经左胸后外侧切口实施二次冠状动脉旁路移植术的临床应用与特点。方法我院自2014年7月~2016年3月共实施经左胸后外侧切口实施二次冠状动脉旁路移植术2例,使用普通肋骨撑开器,经左第五肋间进胸。从心尖部逐渐向心包内游离,分离原有初次手术造成的粘连面。合理暴露靶血管并判断选取远端吻合区域,使用大隐静脉或者小隐静脉作为血管桥,游离下肺韧带,侧壁钳夹取降主动脉为近端吻合口,从而进行二次冠脉血运重建。结果 2例均成功实施非体外循环心脏跳动下的冠状动脉旁路移植术,远端吻合口2~3个,平均手术时间182分钟。无住院死亡病例。目前随访尚无死亡及并发症报道。结论经左胸后外侧切口实施二次冠状动脉旁路移植术对某些二次开胸的冠心病病人是安全实用的选择,非体外循环方式下进行此类手术是可行的。  相似文献   

3.
经左胸前外侧小切口冠状动脉旁路移植术   总被引:1,自引:0,他引:1  
目的 评价经左胸前外侧小切口冠状动脉旁路移植术的临床疗效及远期随访结果.方法 2002年1月至2006年10月,38例单支或多支冠状动脉病变患者经左胸前外侧小切口进胸,直视下或胸腔镜辅助下,完成非体外循环冠状动脉旁路移植术.其中男性25例.女性13例;年龄38~78岁,平均(63.3±11.1)岁.结果 38例手术均顺利完成.20例行单纯旁路移植1支;10例先行支架植入,后行胸廓内动脉至前降支端侧吻合,其中2例行胸廓内动脉与第一对角支、前降支序贯吻合;8例行旁路移植2支,其中3例为序贯吻合,5例应用桡动脉行"Y"形吻合.术后无死亡及严重并发症.37例患者获得26~82个月随访,平均(53.2±28.5)个月;无晚期死亡,无再发心肌梗死.心功能Ⅰ级26例,Ⅱ级12例.3例心绞痛复发,2例经药物控制后症状缓解,1例经造影证实吻合口狭窄于术后2年行支架植入.结论 左前外侧小切口非体外循环冠状动脉旁路移植术具有较低的病死率和心脏不良事件发生率,远期结果良好.  相似文献   

4.
目的探讨胸骨下段小切口在非体外循环冠状动脉旁路移植术中应用的效果。方法回顾性分析2012年6月至2014年12月前降支单支病变的冠心病患者行胸骨下段小切口非体外循环冠状动脉旁路移植术19例的临床资料,其中男11例、女8例,年龄59.6(44~68)岁。所有患者均游离左乳内动脉与前降支吻合,其中1例因术中探查见第一对角支近端明显粥样斑块且对角支粗大,遂向上延长切口,全胸骨打开,游离大隐静脉行对角支搭桥,近端吻合于升主动脉,术后1、3、6、12个月进行随访。结果其中1例术中转为常规胸骨正中切口手术,其余18例手术胸骨下段小切口完成,术中血流动力学稳定,无围术期急性心肌梗死及死亡病例,无乳内动脉损伤、无吻合口漏血及恶性心律失常发生,无大出血、二次开胸止血及切口感染等并发症出现,术后住院4~6 d,监护室入住时间、呼吸机辅助通气时间及住院费用均较常规开胸手术明显降低,术后随访期间无心绞痛复发病例。结论胸骨下段小切口行非体外循环冠状动脉旁路移植术,创伤较小,安全可靠;而且是一种操作相对简单,容易掌握及可灵活应变的小切口微创手术,尤其适合于初学小切口冠状动脉旁路移植术术者。  相似文献   

5.
机器人辅助的微创冠状动脉旁路移植术   总被引:1,自引:0,他引:1  
目的:介绍机器人辅助的微创冠状动脉旁路移植手术。方法:应用da Vinci机器人系统取左乳内动脉,然后经左胸第2肋间小切口在体外循环下行冠状动脉旁路移植术。结果:本组34例患者无围术期死亡和心肌梗死;术后有4例发生低心排血量综合征,2例发生急性肾功能不全。结论:机器人辅助的微创冠状动脉旁路移植术是一种安全可靠的手术方法,可以减轻术后疼痛和促进术后恢复。  相似文献   

6.
目的探讨左胸小切口冠状动脉旁路移植术多支动脉桥策略的安全性及有效性,为该技术推广提供证据。方法回顾性分析2015年12月至2019年11月北京大学第三医院心脏外科64例左胸小切口多支搭桥手术患者的临床资料。男54例、女10例,年龄36~77(61.1±8.7)岁。经第5肋间长5~8 cm左胸前外侧切口进胸,在非体外循环下进行手术,借助胸壁悬吊装置及心脏固定器,完成升主动脉近端吻合,前降支、回旋支及右冠状动脉系统的靶血管远端吻合等操作。移植血管数量2~4(2.3±0.5)支,其中45例患者移植2支,17例移植3支,2例移植4支;手术结合经皮冠状动脉介入治疗(PCI)杂交治疗3例,全动脉化旁路移植62例。术后7 d内复查冠状动脉造影评估旁路血管通畅率,随访记录主要不良心脑血管事件(MACCE)发生情况,通过Kaplan-Meier法计算免于发生MACCE率。结果无患者中转开胸手术,术中未应用主动脉内球囊反搏或体外膜肺氧合。术后切口愈合不良1例,再次手术2例(均为术后胸腔出血)。术后30 d内发生非致死性心肌梗死1例,无死亡。术后早期复查造影旁路血管总体通畅率为96.2%,前降支旁路通畅率为98.2%。随访12~60个月(中位随访时间28个月)。失访率7.8%(5/64)。36个月免于MACCE发生率为84.9%(95%CI 79.5%~90.3%)。结论左胸小切口多支冠状动脉旁路移植术可以实现完全再血管化及全动脉化搭桥,近期及中远期效果良好。  相似文献   

7.
目的比较微创左胸小切口与传统胸骨正中切口冠状动脉搭桥术的优缺点。方法从2006年3月至2008年3月,对66例冠心病经左胸微创小切口实施非体外循环左乳内动脉前降支搭桥术,时42例冠心病经传统正中切口实施非体外循环左乳内动脉前降支搭桥术。比较术前基本情况及手术切口长度、切口感染情况与住院时间,术后第1、2、3周及1、2、3、6个月进行随访。结果左胸小切口组与胸骨正中切口组均无手术死亡,无术后出血,无心绞痛症状,仅胸骨正中切口组出现1例切口感染,其余无切口感染裂开。左胸小切口组较胸骨正中切口组手术切口小,住院时间短。随访半年无心脏事件发生。结论左胸微创小切口非体外循环冠状动脉搭桥术安全、可靠,近期临床效果显著。适用于单支血管病变或联合经皮冠状动脉支架术治疗重症冠心病。  相似文献   

8.
目的总结非体外循环冠状动脉旁路移植术(OPCAB)对左冠状动脉主干合并3支血管病变患者的治疗经验及体会。方法对33例左冠状动脉主干合并3支血管病变患者施行了OPCAB,用左乳内动脉作为移植血管与左前降支进行吻合,大隐静脉作为移植血管分别与回旋支、右冠状动脉/后降支、对角支和钝缘支进行吻合。结果每例患者行旁路血管移植2~5支,平均3.4支。无手术死亡,无围手术期心肌梗死、呼吸衰竭、肝肾功能衰竭等严重并发症,术后心绞痛均消失。结论OPCAB治疗左冠状动脉主干合并3支血管病变的高危冠心病患者是可行、有效的,手术损伤小;而积极的术前准备、主动脉内球囊反搏的应用、正确的手术方法和配合、建立一支熟练快速的应急队伍是确保手术成功的关键。  相似文献   

9.
目的总结经左前外侧胸部小切口在直视下获取左乳内动脉(left internal mammary artery,LIMA)行冠状动脉前降支旁路移植术的临床价值。方法 2012年5月~2014年6月在全身麻醉非体外循环下完成左前外侧胸部小切口冠状动脉旁路移植手术(minimally invasive direct coronary artery bypass,MIDCAB)200例。术中使用新型胸壁悬吊拉钩在直视下获取LIMA,应用改良稳定器在非体外循环下行前降支旁路移植。138例接受单纯左胸MIDCAB,62例接受左胸MIDCAB与冠状动脉介入相结合的分站式杂交。结果术后呼吸机使用时间(9.1±4.3)h,监护室停留时间(26.4±14.4)h。术后完全无输血156例,44例输红细胞2~6 U(中位数4 U)。1例(0.5%)发生围手术期心肌梗死,该患者出院后死于心力衰竭(死亡率0.5%)。106例术后1周造影复查,2例(2/106,1.9%)左乳内动脉桥闭塞,随即再行常规冠状动脉旁路移植手术,康复出院。197例随访2~26个月,(9.4±6.2)月,无死亡、心绞痛或心肌梗死发生。结论新型悬吊式乳内动脉牵开系统可以在直视下从第1肋上缘开始获取LIMA,使用改良心脏稳定器便于在心脏跳动下完成冠状动脉吻合,从而获得良好的临床效果。  相似文献   

10.
【摘要】〓目的〓研究全胸腔镜下冠状动脉旁路移植术临床应用体会。方法〓2005年9月至2013年7月,冠心病患者共9例,男性5例,女性4例。均在电视胸腔镜下游离乳内动脉,行胸腔镜下冠状动脉旁路移植术。其中8例行非体外循环下左乳内动脉与前降支吻合,1例在体外循环下行房间隔缺损修补术,同期行右乳内动脉与右冠状动脉吻合。结果〓9例患者均手术成功。乳内动脉游离时间为31~47 min(39.3±5.9 min)。乳内动脉与冠状动脉的吻合时间为6~7 min(5.2±1.4 min)。术后ICU停留时间为2~4 d。术后9~12 d顺利出院。结论〓全胸腔镜下游离乳内动脉行冠状动脉旁路移植术近期效果良好。  相似文献   

11.
Background : We investigated the vasopressor hormone response following mesenteric traction (MT) with hypotension due to prostacyclin (PGI2) release in patients undergoing abdominal surgery with a combined general and epidural anesthesia. Methods : In a prospective, randomized, placebo-controlled study we administered 400 mg ibuprofen (i.v.) in 42 patients scheduled for abdominal surgery. General anesthesia was combined with epidural anesthesia (T4-L1). Before as well as 5, 15, 30, 45, and 90 min after MT we recorded plasma osmolality, hemodynamics and measured 6-keto-PGFlα (stabile metabolite of PGI2), TXB2 (stabile metabolite of thromboxane A2) active renin, and arginine vasopressin (AVP) plasma concentrations by radioimmunoassay. Catecholamine levels were assessed by high-pressure liquid chromatography (HPLC) with electrochemical detection. Results : Following MT, arterial hypotension occurred along with a substantial PGI2 release. This was completely abolished by ibuprofen administration. Although plasma levels of 6-keto-PGF (1133 (708) vs. 60 (3) ng/L, median (median absolute deviation), P=0.0001, placebo vs. ibuprofen) remained significantly elevated, blood pressure was restored within 30 min after MT in the placebo group. At the same point in time plasma concentrations of TXB2 (164 (87) vs. 58 (1) ng/L, P=0.0001), epinephrine (46 (33) vs. 14 (6) ng/L, P=0.001), AVP (41 ± (18) vs. 12 (7) ng/L, P=0.0004), and active renin (27 (12) vs. 12 (4) ng/L, P = 0.001) were significantly higher in placebo-treated patients. Conclusion : Under combined general and epidural anesthesia arterial hypotension following MT due to endogenous PGI2 release is associated with enhanced release of AVP, active renin, epinephrine and thromboxane A2, presumably contributing to hemodynamic stability within 30 min after MT.  相似文献   

12.
Don Dame 《Artificial organs》1996,20(5):613-617
Abstract: Virtually all blood pumps contain some kind of rubbing, sliding, closely moving machinery surfaces that are exposed to the blood being pumped. These valves, internal bearings, magnetic bearing position sensors, and shaft seals cause most of the problems with blood pumps. The original teaspoon pump design prevented the rubbing, sliding machinery surfaces from contacting the blood. However, the hydraulic efficiency was low because the blood was able to "slip around" the rotating impeller so that the blood itself never rotated fast enough to develop adequate pressure. An improved teaspoon blood pump has been designed and tested and has shown acceptable hydraulic performance and low hemolysis potential. The new pump uses a nonrotating "swinging" hose as the pump impeller. The fluid enters the pump through the center of the swinging hose; therefore, there can be no fluid slip between the revolving blood and the revolving impeller. The new pump uses an impeller that is comparable to a flexible garden hose. If the free end of the hose were swung around in a circle like half of a jump rope, the fluid inside the hose would rotate and develop pressure even though the hose impeller itself did not "rotate"; therefore, no rotating shaft seal or internal bearings are required.  相似文献   

13.
Background: Halothane inhibits in vitro and in vivo activity of cytochrome P-450 (CYP) 2E1. There are several fluorinated volatile anaesthetics besides halothane, and most of them are defluorinated by CYP2E1. It is unclear whether other fluorinated anaesthetics inhibit the in vivo activity of CYP2E1.
Methods: We compared the inhibitory effects of therapeutic concentrations of four inhalational anaesthetics, halothane, enflurane, isoflurane, and sevoflurane, on chlorzoxazone metabolism in rabbits receiving artificial ventilation.
Results: All four inhalational anaesthetics decreased arterial blood pressure and increased plasma chlorzoxazone concentration. However, no significant differences in the plasma chlorzoxazone concentration were found between the four anaesthetics. The estimated chlorzoxazone clearance increased after beginning inhalation with all four agents, but no significant difference in clearance was noted between agents.
Conclusions: At therapeutic concentrations, the in vivo inhibitory effect on chlorzoxazone metabolism was similar for all four inhalational anaesthetics examined, even though their chemical characteristics and extent of hepatic metabolism differ considerably.  相似文献   

14.
Abstract: A variety of protein-bound or hydrophobic substances, accumulating as a result of pathologic conditions such as exogenous or endogenous intoxications, are removed poorly by conventional detoxification methods because of low accessibility (hemodialysis), insufficient adsorption capabilities (hemosorption), low efficiency (peritoneal dialysis), or economic limitations (high-volume plasmapheresis). Combining advantages of existing methods with microspheric technology, a module-based system was designed. Major operating parameters of the latter can be modified to allow for adjustment to individual clinical situations. An extracorporeal blood circuit including a plasmafilter is combined with a secondary high-velocity plasma circuit driven by a centrifugal pump. Different microspheric adsorbers can be combined in one circuit or applied in sequence. Thus, a prolonged treatment can be tailored using specially designed selective adsorber materials. Comparing this system with existing methods (high-flux hemodialysis, molecular adsorbent recycling system), results from our in vitro studies and animal experiments demonstrate the superior efficiency of substance removal.  相似文献   

15.
Background : Our objective was to determine whether administration of propranolol or verapamil modifies the hemodynamic adaptation to continuous positive-pressure ventilation (CPPV), in particular the regional distribution of cardiac output (CO).
Methods : General hemodynamics and regional blood flows assessed by microsphere technique (15 (μm) were recorded in 16 anesthetized pigs during spontaneous breathing (SB) and CPPV with 8 cm H2O end-expiratory pressure (CPPV8) before and after intravenous administration of propranolol (0.3 mg · kg−1 followed by 0.15 mg · kg−1 · h−1, n=8) or verapamil (0.1 mg · kg−1 followed by 0.3 mg · kg−1 · h−1, n=8).
Results : CPPV8 depressed CO by 25% without shifts in its relative distribution with the exception of a noteworthy increase in adrenal perfusion. Propranolol increased arterial blood pressure, and due to a fall in heart rate, CO dropped by 25%. The kidneys and, to a lesser extent, the splanchic region and central nervous system received increased fractions of the remaining CO at the expense of skeletal muscle flow. Similar patterns were seen during SB and CPPV8 such that the combination of propranolol and CPPV8 depressed CO by 50%. The circulatory effects of verapamil were less evident but myocardial perfusion tended to increase.
Conclusions : The combination of propranolol or verapamil with CPPV does not result in any specific hemodynamic interaction in anesthetized pigs, except that the combined effect of propranolol and CPPV may severely reduce CO.  相似文献   

16.
Background: Obesity is increasing globallly, including in the formerly "Eastern Bloc" countries. Methods: A survey was made of obesity and bariatric surgery. Results: In the 8 East and Central European countries studied, with total population 300 million, roughly 43% of the population was overweight (BMI 25-30), 23% obese (BMI > 30), with about 15 million people morbidly obese (BMI > 40). From 0-10 morbidly obese individuals/100,000/year undergo bariatric surgery. Conclusion: Most countries were found to provide inadequate treatment for obesity.The majority of the morbidly obese are not treated effectively. However, health-care awareness of obesity and bariatric surgeons are slowly increasing.  相似文献   

17.
Background : Inhibitory effects of volatile anaesthetics on platelet aggregation have been demonstrated in several studies. However, the influence of volatile anaesthetics on intracoronary platelet adhesion has not been elucidated so far.
Methods : Isolated hearts of guinea pigs were perfused with buffer in the absence or presence of volatile anaesthetics (0.5 and 1 MAC) at constant coronary flow rates of 5 ml/min for 25 min, then 1 ml/min for 30 min and again 5 ml/min for 10 min. Before, during and after low-flow perfusion, a bolus of human platelets was applied into the coronary system. To simulate thrombogenic conditions, 0.3 U/ml human thrombin was infused during low-flow perfusion and reperfusion. The number of platelets sequestered to the endothelium was calculated from the difference between coronary in- and output of platelets. The myocardial production of lactate and consumption of pyruvate and coronary perfusion pressure were also determined.
Results : At a flow rate of 5 ml/min only about 3% of the applied platelets did not emerge from the coronary system, in any group. In contrast, 13.1±1.2% (mean±SEM) of infused platelets became adherent in low-flow perfusion in the control group without anaesthetic. The adherence was reduced with each 1 MAC isoflurane (to 6.2±1.2%), sevoflurane (to 4.4±0.9%) or halothane (to 3.2±1.5%) (each P <0.05 vs. control). Volatile anaesthetic, 0.5 MAC, did not inhibit platelet adhesion to a statistically significant extent in any case. Perfusion pressure and metabolic parameters were not statistically different between the control and the hearts exposed to anaesthetics.
Conclusion : Volatile anaesthetics in a concentration of 1 MAC can reduce the adhesion of platelets in the coronary system under reduced flow conditions. This action does not arise from vasodilation or inhibition of ischaemic stress.  相似文献   

18.
Background: It has been shown that the depressive effects of both propofol and midazolam on consciousness are synergistic with opioids, but the nature of their interactions on other physiological systems, e. g. respiration, has not been fully investigated. The present study examined the effect of propofol and midazolam alone and in combination with fentanyl on phrenic nerve activity (PNA) and whether such interactions are additive or synergistic. Methods: PNA was recorded in 27 anaesthetised and artificially ventilated rabbits. In three groups, propofol, fentanyl and midazolam were administered intravenously in incremental doses to construct dose-response curves for the depressant effects of each one on PNA. In another two groups, the effect of pretreatment with either fentanyl 1 μg · kg?1 i. v. or midazolam 0.05 mg · kg?1 i. v. on the effects of propofol and fentanyl respectively on PNA were studied. Results: Propofol and fentanyl caused a dose-dependent depression of PNA with complete abolition at the highest total doses of 16 mg · kg?1 i. v. and 32 μg · kg?1 i. v., respectively. In contrast, midazolam in incremental doses to a total of 0.8 mg · kg?1 reduced mean PNA by 63%, but approximately 12% of PNA remained at a total dose as high as 6.4 mg · kg?1. The mean ED50s, calculated from dose-response curves, were 5.4 mg · kg?1, 3.9 μg · kg?1 and 0.4 mg · kg?1 for propofol, fentanyl and midazolam, respectively. Initial doses of either fentanyl 1 μg · kg?1 i. v. or midazolam 0.05 mg · kg?1 i. v. acted synergistically with subsequent doses of either propofol or fentanyl to abolish PNA at total doses of 8 mg · kg?1 and 8 μg · kg?1, respectively. Conclusion: Fentanyl has a synergistic interaction with both propofol and midazolam on PNA and hence potentially on respiration.  相似文献   

19.
Background: Catecholaminergic support is often used to improve haemodynamics in patients undergoing major abdominal surgery. Dopexamine is a synthetic vasoactive catecholamine with beneficial microcirculatory properties. Methods: The influence of perioperative administration of dopexamine on cardiorespiratory data and important regulators of macro- and microcirculation were studied in 30 patients undergoing Whipple pancreaticduodenectomy. The patients received randomized and blinded either 2 μg · kg?1 · min?1 of dopexamine (n=15) or placebo (n=15, control group). The infusion was started after induction of anaesthesia and continued until the morning of the first postoperative day. Endothelin-1 (ET-1), vasopressin, atrial natriuretic peptide (ANP), and catecholamine plasma levels were measured from arterial blood samples. Measurements were carried out after induction of anaesthesia, 2 h after onset of surgery, at the end of surgery, 2 h after surgery, and on the morning of the first postoperative day. Results: Cardiac index (CI) increased significantly in the dopexamine group (from 2.61±0.41 to 4.57±0.78 1 · min?1 · m?2) and remained elevated until the morning of the first postoperative day. Oxygen delivery index (DO2I) and oxygen consumption index (VO2I) were also significantly increased in the dopexamine group (DO2I: from 416±91 to 717±110 ml/m2 · m2; VO2I: from 98±25 to 157±22 ml/m2 · m2), being significantly higher than in the control group. pHi remained stable only in the dopexamine patients, indicating adequate splanchnic perfusion. Vasopressive regulators of circulation increased significantly only in the untreated control patients (vasopressin: from 4.37±1.1 to 35.9±12.1 pg/ml; ET-1: from 2.88±0.91 to 6.91±1.20 pg/ml). Conclusion: Patients undergoing major abdominal surgery may profit from prophylactic perioperative administration of dopexamine hydrochloride in the form of improved haemodynamics and oxygenation as well as beneficial influence on important regulators of organ blood flow.  相似文献   

20.
A concept of balanced analgesia using nonsteroidal anti-inflammatory drugs (NSAIDs), paracetamol (acetaminophen), opioids, and corticosteroids can also be used in patients with pre-existing illnesses. NSAIDs are the most effective treatment for acute pain of moderate intensity in children; however, these drugs should be avoided in patients at increased risk for serious side effects, e.g. patients with renal impairment, bleeding tendency, or extreme prematurity. NSAIDs can be given with minimal risks to the younger child with mild to moderate asthma, and, in these patients, the use of steroids can be encouraged; in addition to their antiemetic and analgesic action, a beneficial effect on asthma symptoms can be expected. In the non-intubated child with cerebral trauma, exaggerated sedation caused by opioids and increased bleeding tendency caused by NSAIDs must be avoided. In neonates and small infants, the oral administration of sucrose or glucose is helpful to minimize pain reaction during short uncomfortable interventions.  相似文献   

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