新型四腔水箱在腹外科腔镜电凝线清洗消毒中的应用研究

摘要〓目的〓研究四腔水箱在腹外科腔镜电凝线擦拭法清洗消毒中的应用效果。方法〓通过目测法和ATP生物荧光法,对本研究的四腔水箱用于腹外科腔镜电凝线的清洗效果进行评价。结果〓传统治疗碗清洗的206件腔镜电凝线清洗质量合格率为86.4%,四腔水箱清洗的206件腹腔镜电凝线清洗质量合格率为94.6%,差异有统计学意义（P＜0.01）。用四腔水箱清洗腔镜电凝线擦拭过程中的护理人员满意度较高。结论〓四腔水箱可提高腹外科腔镜电凝线清洗质量和护理人员满意度。     

The effects of radiofrequency catheter ablation on the metabolic enzymes and Ca++-ATPase of myocytes

Summary Using histochemical technique, the effects of radiofrequency catheter ablation (RFCA) on the activities of LDH, SDH, CCO, and Ca⁺⁺-ATPase of guinea-pig ventricular myocytes were examined. The histological changes were observed for comparison. Radiofrequency energy (500 kHz) delivered was 20 WX 10 s. The results were as follows: RFCA resulted in significant impairments in all the four kinds of enzymes but without statistical differences in the areas involved in this energy level. No statistically significant difference was found between the ranges of enzymatic damages and areas of pathological lesions. These findings showed a consistency in areas of the histological and histochemical lesions resulted from RFCA.     

Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions

The aim of this study was to determine the effects of main factors and interactions on the color removal performance from dye solutions using the electrocoagulation process enhanced by adsorption on Granular Activated Carbon (GAC). In this study, a mathematical approach was conducted using a two-level fractional factorial design (FFD) for a given dye solution. Three textile dyes: Acid Blue 74, Basic Red 1, and Reactive Black 5 were used. Experimental factors used and their respective levels were: current density (2.73 or 27.32 A/m²), initial pH of aqueous dye solution (3 or 9), electrocoagulation time (20 or 180 min), GAC dose (0.1 or 0.5 g/L), support electrolyte (2 or 50 mM), initial dye concentration (0.05 or 0.25 g/L) and current type (Direct Current—DC or Alternative Pulsed Current—APC). GAC-enhanced electrocoagulation performance was analyzed statistically in terms of removal efficiency, electrical energy, and electrode material consumptions, using modeling polynomial equations. The statistical significance of GAC dose level on the performance of GAC enhanced electrocoagulation and the experimental conditions that favor the process operation of electrocoagulation in APC regime were determined. The local optimal experimental conditions were established using a multi-objective desirability function method.     

腹腔镜下卵巢良性肿瘤剥除术中两种止血方法对卵巢储备功能的影响分析

目的探讨腹腔镜下卵巢良性肿瘤剥除术中采用双极电凝止血和缝合止血两种方法对卵巢储备功能的影响。方法50例行腹腔镜下单侧卵巢良性肿瘤剥除术患者,应用随机数表法分为A组和B组,每组25例。A组术中卵巢肿瘤剥离创面采用双极点状电凝止血,B组术中卵巢肿瘤剥离创面采用3-0可吸收线间断或连续缝合止血。比较两组患者手术前后雌二醇(E2)、卵泡刺激素(FSH)、窦卵泡数(AFC)水平。结果50例患者手术过程均顺利,无中转开腹,术后对症治疗,无术后感染及出血,按时换药,如期出院。术后1个月,两组E2、AFC水平均低于术前,FSH高于术前,且A组E2(30.33±7.28)pg/ml、AFC(4.48±1.53)个均低于B组的(34.67±7.72)pg/ml、(5.68±1.46)个,FSH(10.33±2.25)U/L高于B组的(8.82±2.40)U/L,差异均具有统计学意义(P<0.05)。术后6个月,两组的E2、FSH水平与本组术前及组间比较,差异均无统计学意义(P>0.05);B组的AFC与术前比较,差异无统计学意义(P>0.05);A组的AFC低于本组术前及B组,差异具有统计学意义(P<0.05)。结论腹腔镜下良性卵巢肿瘤剥除术中双极电凝止血法及缝合止血法均可对卵巢储备功能造成一定影响,相对电凝止血法,手术缝合止血能更好的保护卵巢功能。     

Management of lower gastrointestinal tract bleeding

Acute bleeding from the colon and rectum is less frequent and less dramatic than haemorrhage from the upper gastrointestinal tract. In most cases, bleeding from the colon and rectum is self-limiting and requires no specific therapy. Diverticula and angiectasias are the most frequent sources of bleeding. Malignancy, colitis (inflammatory bowel disease, non-steroidal anti-inflammatory drugs, and infectious colitis), ischaemia, anorectal disorders, postpolypectomy bleeding, and HIV-related problems are less frequent causes. The recurrence rate, especially in diverticular bleeding, is high. Resuscitation and haemodynamic stabilisation of the patient is the first step in the management of colonic bleeding. Urgent colonoscopy is the method of choice for diagnosis and therapy. By analogy with peptic ulcer bleeding, risk stratification using stigmata of haemorrhage is gaining more importance. Modern endoscopic techniques such as injection therapy, thermocoagulation and mechanical devices seem to be effective in achieving haemostasis and avoiding precarious surgery. Angiography and nuclear scintigraphy are reserved for those patients in whom colonoscopy is not possible or has repeatedly failed to localise the bleeding site.     

腹腔镜肝切除术中剔肝法联合滚凝法临床应用价值研究

目的 探讨腹腔镜肝切除术中剔肝法联合滚凝法的技术要点、有效性及可行性。方法 采用倾向评分匹配及回顾性病例对照研究方法,对2015年5月至2019年12月青岛大学附属医院肝胆胰外科同一治疗组收治的296例行腹腔镜肝切除术病人的临床资料进行分析,根据肝实质离断及肝断面止血方法不同,分为电凝组（133例,采用超声刀传统钳夹电凝）与剔肝组（163例,采用剔肝法联合滚凝法）,对比分析两组病人一般临床病理资料、术中及术后情况。结果 倾向评分匹配后共184例病人配对成功,各92例。两组病例在手术时间、中转开腹、术中输血、术后出血发生率、术后胆瘘发生率、排气时间方面差异无统计学意义（P＞0.05）,而在术中出血、术后肝周积液发生率、术后住院时间方面差异有统计学意义（P＜0.05）。结论 剔肝法联合滚凝法为腹腔镜肝切除术提供了一种非常可靠实用的肝实质离断技术,能有效减少术中出血及术后肝周积液的发生,缩短术后住院时间。     

电子结肠镜下冷圈套切除术与高频电凝切除术治疗结直肠小息肉的效果比较

目的 比较电子结肠镜下冷圈套切除术与高频电凝切除术治疗结直肠小息肉的临床效果.方法 选取2017年1月至2019年1月我院肠镜室收治的126例结直肠小息肉患者作为研究对象,采用随机数字表法将其分为对照组和研究组,各63例.对照组患者接受电子结肠镜下高频电凝切除术治疗,研究组患者接受电子结肠镜下冷圈套切除术治疗.比较两组...     

内镜下高频电凝固术治疗Barrett食管56例临床分析

目的探讨内镜下高频电凝固术（HFE）在Barrett食管（BE）治疗中的临床应用价值。方法将112例BE患者随机分为观察组和对照组各56例,对照组采用PPI治疗,观察组同时采用HFE治疗。结果观察组术后第3、12个月胃镜复查其总有效率均为100.00%,对照组分别为12.50%和30.36%,两组比较,差异均有统计学意义（P〈0.01）。结论采用HFE治疗BE方法简单、安全、疗效显著,值得临床推广。