腹腔镜下腹壁切口疝修补术

目的探讨腹腔镜下应用补片行腹壁切口疝修补术的方法、安全性及临床效果。方法2004年9月至2007年6月对56例切口疝（腹壁缺损长径7～19cm,宽径4～12cm）的患者行腹腔镜下应用补片行切口疝修补术。结果55例腹腔镜下行腹腔粘连松解和补片固定,顺利完成切口疝修补手术,1例因肠管与腹壁粘连紧密而中转开腹修补术。手术时间60～135min,平均92min。肠功能恢复早,术后排便、排气时间平均为31h,术后住院5～7d。术后并发症：术后疼痛达3个月以上者有9例,浆液肿8例。无手术死亡和肠瘘发生。随访16～28个月,平均19个月,未见切口疝复发。结论腹腔镜下行腹腔内粘连松解、采用缝合器和缝线贯穿腹壁固定补片来修补腹壁切口疝是一种安全、有效的微创方法,值得临床推广应用。     

腹腔镜下腹壁切口疝修补术(附41例报告)

目的探讨腹腔镜下采用聚丙烯和膨化聚四氟乙烯复合补片（Bard Composix Mesh）修补腹壁切口疝的效果。方法2004年10月～2005年8月，对41例切口疝（腹壁缺损长径3～25cm，宽径3～18cm）腹腔镜下用超声刀进行腹腔内粘连松解和采用强生疝修补用缝合器行补片固定修补术。结果41例均顺利完成，无中转开腹。手术时间60～182min，平均85min。术后疼痛轻微，术后排便、排气时间25～41h，平均32h。术后第2天进食。术后住院5～7d，平均6d。41例随访6～16个月，平均9个月，未见切口疝复发。结论腹腔镜下采用复合补片修补腹壁切口疝是一种安全、有效的方法，值得临床推广应用。     

腹腔镜腹壁切口疝无张力修补术47例回顾

目的:探讨腹腔镜腹壁切口疝无张力修补术的手术方法及临床效果。方法:回顾分析2006年2月至2011年8月为47例患者行腹腔镜腹壁切口疝无张力修补术的临床资料。结果:41例(87.23%)顺利完成手术;6例中转开腹,其中2例小肠肠管破裂,1例腹腔内粘连广泛无法分离,3例肠管与腹壁及切口粘连致密无法分离。手术时间34～158 min,平均76 min。术后住院4～13 d,平均8.6 d。术后34例(72.34%)腹壁钉合区域腹壁疼痛,3例(6.38%)疼痛达2个月以上;14例(29.79%)发生浆液肿;无手术死亡、切口感染、补片感染及肠漏发生。随访8～46个月,平均13个月,无一例复发。结论:腹腔镜下松解腹腔内粘连,采用钉合器或钉合器加缝线贯穿腹壁双重固定补片法修补腹壁切口疝安全、有效,腹腔粘连严重分离困难的患者应及时中转开腹。     

老年腹壁切口疝的腹腔镜下修补术

目的 探讨腹腔镜下应用补片行老年腹壁切口疝修补术的方法、安全性及临床效果。方法 2004年11月至2006年6月对17例老年切口疝患者行腹腔镜下应用补片切口疝修补术。结果 16例腹腔镜下行腹腔粘连松解和补片固定,顺利完成切口疝修补手术,1例因肠管与腹壁粘连紧密而中转开腹修补术。手术时间65～132min,平均95min。术后恢复排便、排气时间平均为31h,术后住院5～7d。术后并发症：疼痛3个月以上者3例,浆液肿5例,穿刺口感染1例,均经保守治疗后好转,无手术死亡和肠瘘发生。随访7～26个月（平均13个月）,未见切口疝复发。结论 腹腔镜下行腹腔内粘连松解,采用缝合器和缝线贯穿腹壁固定补片修补老年腹壁切口疝安全、有效。     

腹腔镜下腹壁切口疝补片修补术的初步经验

目的:探讨腹腔镜下腹壁切口疝修补术的手术方法、安全性等问题。方法:对我院2004年3月～11月间收治的25例腹壁切口疝病人,进行腹腔镜下修补术。结果:24例(96%)手术成功,1例(4%)因腹腔内广泛粘连而中转为剖腹修补。平均手术时间为110min,平均术后住院6d,6例(24%)病人术中发现有一个以上的隐匿性缺损。术后并发症有:术后短期内修补区腹壁明显疼痛21例(84%),腹壁缝合点较长时间疼痛6例(24%),浆液肿3例(12%);无修补区感染,也未发现早期复发的病例。结论:对腹壁切口疝,多数病人是可以经腹腔镜进行粘连松解及补片修补术的,还可在术中发现其他隐性缺损。对腹腔内广泛粘连而影响操作器械的进入及分离者,应及时中转剖腹手术。     

腹腔镜下腹壁切口疝修补术15例

目的探讨腹腔镜下应用补片行腹壁切口疝修补术的方法、安全性及临床疗效。方法2008年5月至2009年5月,对15例腹壁切口疝进行腹腔镜下补片修补术。结果14例腹腔镜下行腹腔粘连松解和补片固定,顺利完成切口疝修补手术;1例因肠管与腹壁及疝环致密粘连而中转开放切口疝修补术。术后腹壁修补区域疼痛10例(71.4%),疝环和补片间出现浆液肿4例(28.6%),无肠瘘和死亡病例,未发生手术相关的感染。术后随访3～12个月,平均7.5个月,未见复发。结论在腹腔镜下行腹腔粘连松解,采用疝钉合器与缝线贯穿腹壁全层固定补片可以修补大多数腹壁切口疝,同时还可以发现其他的隐匿性疝,是一种安全、有效的微创手术方法,值得临床推广。     

腹腔镜技术在切口疝修补术中的应用体会

目的探讨腹腔镜下应用补片修补切口疝的手术方法和II缶床效果。方法回顾性分析我科2006年1月至2008年12月对腹壁切口疝23例施行腹腔镜修补术的临床资料。结果本组成功施行腹腔镜下切口疝补片修补22例,因腹腔内严重粘连中转剖腹手术1例,术中发现多发切口疝3例。本组无手术死亡和肠瘘病例。术后出现疼痛4例,补片周围积液3例。全组获随访4～24个月,平均13．8个月,未见切口疝复发。结论腹壁切口疝病人行腹腔镜下补片修补大多是安全地,还可在术中发现隐性缺损。对腹腔内广泛粘连分离困难者,应及时中转剖腹手术。     

腹腔镜下切口疝补片修补术的临床应用

目的 探讨腹腔镜下腹壁切口疝修补术的手术方法、安全性等问题。方法对2004年3月至2006年5月79例行腹腔镜下补片修补术治疗腹壁切口疝病人的临床资料进行分析。结果 78例（98．7％）手术成功，1例因腹腔内广泛粘连而中转开放修补。平均手术时间为88min，平均术后住院4．6d，18例（22．8％）病人术中发现有1个以上的隐匿性缺损。术后并发症：术后短期内修补区腹壁明显疼痛58例（73．4％）。腹壁缝合点较长时间疼痛6例（7．6％），浆液肿14例（17．7％），无手术死亡，1例术后出现肠瘘，经保守治疗好转，1例腰部切口疝的病人术后复发。结论 多数病人腹壁切口疝可以经腹腔镜行粘连松解及补片修补术，并可在术中发现其他隐性缺损，手术安全性较高。对腹腔内广泛粘连而影响操作器械进入及粘连分离者，应及时中转开腹手术。     

腹腔镜下复合补片修补耻骨上切口疝(附25例报道)

目的总结腹腔镜下耻骨上切口疝修补的手术方法及效果。方法回顾性分析2007年3月至2010年10月期间笔者所在科室25例行腹腔镜下耻骨上切口疝修补术患者的临床资料。男13例,女12例;年龄35～83岁,中位年龄52岁;其中2例是复发疝。疝缺损下缘距耻骨弓距离均小于5 cm。在直视下采用螺旋钉枪将补片固定到腹壁上,补片下边缘须低于耻骨弓2 cm并将其固定到耻骨弓及双侧的耻骨梳韧带上。结果 25例患者均成功完成腹腔镜下切口疝修补,无中转开腹。疝缺损最大径为6.1～12.5 cm,平均9.5 cm。手术时间为90～180 min,平均128 min。总并发症发生率为28%(7/25)。包括术中膀胱损伤1例;术后补片上方浆液肿4例,经局部穿刺抽吸后消失;术后修补区域腹壁疼痛2例,未行特殊处理于术后1个月内逐渐缓解并消失。22例患者获随访,随访率为88%,随访时间为6～48个月,平均30个月,1例于术后2个月复发,复发率为4%。结论腹腔镜下耻骨上切口疝修补是一种安全有效的方法,其网片重叠缺损边缘至少超过5 cm,网片下边缘必须在直视下固定到双侧耻骨梳韧带上,这样可以增加固定的强度并降低修补术后复发率。     

腹腔镜下腹壁巨大切口疝修补术的临床分析

目的 探讨腹腔镜下应用补片修补腹壁切口疝的手术方法及临床效果.方法 回顾性分析41例腹壁切口疝行腹腔镜下补片修补术患者的临床资料.结果 38例均顺利完成手术, 3例中转开腹.手术时间 78～186 min,平均 95 min.术后疼痛轻微,术后排便、排气时间 25～41 h,平均 32 h.术后第 2 d进食.术后住院 5～7 d,平均 6 d.41例随访 6～16个月,平均 9个月,未见疝复发.结论 腹腔镜下采用复合补片修补腹壁切口疝是一种安全、有效的方法,值得临床推广应用.     

Vasopressor hormone response following mesenteric traction during major abdominal surgery

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_1α (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.     

Microspheres Based Detoxification System: A New Method in Convective Blood Purification

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.     

Bariatric Surgery in Some "Central and East-European (former Eastern bloc)"Countries - Current Status and Prediction for the Next Millennium

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.     

Is the recovery profile of mivacurium independent of the rate of decay of its plasma concentration in patients with normal plasma cholinesterase activity?

Background: The duration of action of muscle relaxants is poorly correlated to the rate of decay of their plasma concentration. The plasma concentration of mivacurium may rapidly decrease below its active concentration because of the extensive hydrolysis of mivacurium. By inflating a tourniquet on one upper limb for 3 min after the administration of atracurium, mivacurium or vecuronium, we studied the influence of the initial decline of their plasma concentration on their effect. Methods: In 50 patients anaesthetised with thiopental, isoflurane and fentanyl, the effect of bolus doses of 0.15 or 0.25 mg . kg^?1 mivacurium (MIV 15, MIV 25), 0.3 or 0.5 mg . kg^?1 atracurium (ATR 30, ATR 50) and 0.06 or 0.1 mg . kg^?1 vecuronium (VEC 06, VEC 10) were measured on both arms (evoked response of the adductor pollicis to train-of-four stimulation every 12 s), a tourniquet being applied on one arm just before and during 3 min after the muscle relaxant bolus. Results: Tourniquet inflation of 3 min almost abolished the neuromuscular effect of mivacurium. In the vecuronium groups and in the ATR 50 group, tourniquet inflation did not modify the maximum degree of depression of the twitch response. Also, the duration of action of vecuronium was unaffected by the tourniquet. In the ATR 30 group, times to return of the twitch response to 25% (duration 25%) and 75% (duration 75%) of control response were significantly shorter in the cuffed arm, 23 min vs 27 min, and 41 min vs 45 min, respectively. In the ATR 50 group, only duration 25% was significantly shorter in the cuffed arm (41 min vs 45 min). Conclusion: The results suggest that the rate of decline of the plasma concentration of mivacurium is so rapid, that a very low and almost clinically ineffective concentration is present as soon as 3 min after its administration. The results also indicate that the recovery from a mivacurium-induced neuromuscular blockade is not influenced by the rate of decay of its plasma concentration in patients with genotypically normal plasma cholinesterase.     

Membranes in Artificial Organs

Abstract: Membrane processes play a pivotal and enabling role in modern replacement therapy for acute and chronic organ failure and in the management of immunologic diseases. In fact, virtually all contemporary extracorporeal blood purification methods employ membrane devices, and the next generation of artificial organs and tissue engineering therapies are almost certain to be similarly grounded in membrane technology. In this short essay, we comment on the similarities and differences among synthetic membranes and their natural counterparts and also provide a critical overview of the demographics and technology of hemodialysis, hemofiltration, apheresis, oxygenation, and emerging membrane technologies and applications.     

Influence of dopexamine hydrochloride on haemodynamics and regulators of circulation in patients undergoing major abdominal surgery

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.     

Synergistic interaction between the effects of propofol and midazolam with fentanyl on phrenic nerve activity in rabbits

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.     

Reduction of Plasma Fibrinogen, Immunoglobulin G, and Immunoglobulin M Concentrations by Immunoadsorption Therapy with Tryptophan and Phenylalanine Adsorbents

Abstract Immunoadsorption (1A) therapy with tryptophan (TR-350) or phenylalanine (PH-350) adsorbents has been used to reduce the concentration of serum antibodies in human lymphocyte antigen (HLA)-immunized patients. Other forms of plasma purification have been reported to reduce the level of fibrinogen, which affects the blood properties. In this study we investigated the effects of IA therapy using both adsorbents on plasma fibrinogen and immunoglobulins G and M in 13 patients (8 patients were treated with TR-350, and 5 patients were treated with PH-350). During each session 1 plasma volume (2.8 ± 0.4 L of plasma) was processed through the immunocolumn and then returned to the patient together with the blood cells. Compared with the pretreatment values, the plasma fibrinogen, IgG, and IgM concentrations were significantly reduced after IA therapy (p < 0.01 for TR-350; p < 0.04 for PH-350). There was a positive correlation between the degree of reduction of plasma proteins and the number of IA treatments given. A nonpara-metric test (Wilcoxon's signed-rank test or the Mann-Whitney test) was used for statistical analysis. We conclude from our study that IA therapy effectively lowers the plasma levels of fibrinogen, IgG, and IgM and thus can be considered a valuable alternative to other blood purification methods.     

Systemic analgesia adapted to the children's condition

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.     

Dilemma of Membrane Biocompatibility and Reuse

Abstract: Numerous articles have been published on the multiple use of dialyzers and on the effect of different reprocessing chemicals and techniques on the dialyzer biocompatibility and performance. The results often appear contradictory, especially those comparing standard biocompatibility parameters. Despite this confusion, a discerning review of the published works allows certain limited conclusions to be drawn. Reprocessing of used hemodialyzers changes the biocompatibility profile of a dialyzer as defined by the parameters complement activation. leukopenia, and cytokine release. The effect of reprocessing depends on the chemicals and reprocessing technique applied and also on the type of membrane polymer being subjected to the reprocessing procedure. Reports of pyrogenic reactions indicate that the flux of the membrane also influences how suitable it is for safe reuse. An increased risk of allergic and pyrogenic reactions appears to be associated with dialyzer reuse. Furthermore, there has been a lack of investigations into the immunologic effect of the layer of adsorbed and chemically altered proteins that remains on the inner surface of reprocessed dialyzers. We conclude that the clinical benefit of dialyzer reuse cannot be generally accepted from a biocompatibility point of view.