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Analysis of Failure of Perventricular Device Closure of Ventricular Septal Defect

摘要:目的:分析微创外科室间隔缺损(ventricular septal defect,VSD)封堵失败原因,以期提高术前超声心动图筛查水平。方法:回顾性分析25例微创外科VSD封堵失败改行修补术病例,对比超声表现及手术所见,归纳总结产生并发症的原因。结果:残余分流与VSD假性膜部瘤右室面具有多个出口和低估VSD大小密切相关;VSD合并主动脉瓣右冠瓣脱垂是主动脉瓣反流的主要原因;封堵器移位与低估VSD大小且使用偏心封堵器有关;原有三尖瓣反流加重和发生Ⅲ度房室传导阻滞VSD均位于隔瓣下方;封堵失败组较封堵成功组缺损偏大,差异具有统计学意义(Plt;0.05)。结论:超声心动图对VSD及其毗邻结构的细致评估,有助于严格适应证,提高手术成功率。 Abstract: Objective:To analyze the failure of perventricular closure of ventricular septal defect (VSD), in order to improve the preoperative echocardiography examination. Methods: Twentyfive cases underwent surgical repair after failure of perventricular closure of VSD were included in this study. With combination of echocardiographic and surgical findings, retrospective analysis of the failure of perventricular closure of VSD were attempted to summarize the cause of complications.Results: Residual ventricular communication was due to underestimation of size of VSD and pseudomembranous aneurysm resulting in multiple outlets of VSD on the right ventricle side; preoperative prolapse of rightcoronary cusp was the main reason for mild or greater than mild aortic valve regurgitation after eccentric device closure of VSD; Underestimation of the size of VSD and using eccentric occluder device were responsible for the displacement of VSD occluder device. Postoperative aggravated tricuspid regurgitation and Ⅲ°atrialventricular block (AVB) were attributed to VSDs located under the septal leaflet of tricuspid valve. The size of VSD in group of failed perventricular device closure of VSD was larger than that in group of successful device closure of VSD,and the difference was significant(Plt;0.05). Conclusion: Echocardiography vividly reveals VSD and adjacent structures, which should be used in accessing the anomaly and defect and formulating surgical plans to reduce surgical morbidity and mortality.

糖尿病视网膜病变激光光凝术后的超声生物显微镜检测

应用超声技术评价单纯肥胖儿童左心功能的方法

摘要:随着单纯性肥胖儿童数量的迅速增长，肥胖对儿童左心功能的影响逐渐引起了大家的重视，对其进行早期评估已很有必要。本文即从常规超声心动图、组织多普勒超声心动图、应变与应变率、Tei指数等四个方面对现阶段通过超声技术早期检测与评价肥胖儿童左心功能的方法做一综述。

高频彩色超声对评价高血压患者颈动脉粥样硬化的价值

【摘要】目的 探讨应用高频超声探头观测高血压患者颈动脉内中膜厚度及斑块形成的诊断价值。方法 2008年5月-2009年12月对91例高血压患者使用高频超声观察其颈动脉内中膜厚度及有无斑块形成,用同样的方法检查52例无高血压的志愿者,作为对照组。结果 原发性高血压病组中颈动脉内、中膜厚度明显大于对照组。粥样斑块发生率为51.65%(47/91),显著高于对照组为13.46%(7/52)。结论 颈动脉粥样硬化严重程度与原发性高血压病发生率呈正相关,具有重要的临床意义。

EXPERIMENTAL STUDY OF THE MECHANISM ON BLOOD SUPPLY TO DELAYED SEPARATED SKIN FLAP BY ULTRASONIC DOPPLER

In order to investigate the mechanism of blood supply to the delayed separated skin flap and the time and criteria for its transfer, 5 smallsized Banna pigs were selected to produce 14 skin flaps. In the experimental group the skin flap on one side was made from the middle of the back having an extrathin steel sheet intervened between the flap and the soft tissue of the back whereas the flap on the opposite side without a steel sheet intervened was served as the selfcontrol. The skin flaps were examined 3,7,10 and 20 days after the operation and 3,7 and 10 days after transfer, respectively, by (1) gross observation; (2) ultrasonic Doppler; (3) superficial skin temperature measurement and; (4) histomorphological examination. In the experimentalgroup the survival rate of the flap was 100 percent whereas in the control group all of the flaps had necrosis from 30 to 50 percent after the flap being transfered. In the experimental group, the echo sound from the arterial blood flow from ultrasonic Doppler was heard at the pedicle 7 days after the operation, and as time elapsed, the echo sound spread distally, whereas in the controls no echo sound could be heard over the skin flap. There was significant difference statistically between the experimental and control groups in the temperature of the flaps while the flaps were being transferred (P lt; 0.01). The external diameters of the blood vessels in the central area of the skin flap were larger in the experimental group, 0.8 to l.2mm in comparison to 0.4mm.

高频探头超声在诊断副乳腺中的应用价值

目的　总结高频探头超声在副乳腺诊断中的应用价值。 方法　回顾分析2009年1月－2010年12月临床怀疑副乳腺患者38例的高频探头超声声像图表现，同时用超声对副乳腺进行术前定位。 结果　高频探头超声对38例（50处）副乳腺成功定位，并手术切除，其病理组织学检查结果均与超声诊断一致。 结论　高频探头超声在副乳腺诊断中具有操作简便、无创伤、价廉、诊断符合率高等优点，是诊断副乳腺的首选辅助检查方法之一。

Clinical study of shear wave elastography combined with diaphragm thickening fraction and rapid shallow breathing index to predict the outcome of patients with mechanical ventilation

Objective To explore the application value of shear wave elastography (SWE) combined with diaphragmatic thickening fraction (DTF) and rapid shallow breathing index (RSBI) in predicting the results of weaning of patients with mechanical ventilation. Methods Fifty-two patients with severe illness who were hospitalized in this hospital from January 2022 to September 2022 were treated with mechanical ventilation. After meeting the conditions for weaning, they underwent spontaneous breathing test, and the diaphragm function of patients was evaluated by measuring DTF using ultrasound technology and shear modulus (SM) using SWE technology. According to the weaning results, they were divided into weaning success group and weaning failure group, The differences of mechanical ventilation time, acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score, respiratory rate, RSBI, oxygenation index, DTF, SM and other parameters between the two groups were compared. Multivariate logistic regression was used to analyze the factors affecting the withdrawal results. The receiver operator characteristic (ROC) curve was used to evaluate the predictive value of potential influencing factors on the withdrawal results. Results There were 39 cases of successful withdrawal and 13 cases of failure. There were significant differences in mechanical ventilation time, respiratory rate, RSBI, DTF and SM between the successful weaning group and the failure group (P<0.05). Through multivariate logistic regression analysis, RSBI [area under the ROC curve (AUC)=0.771, 95% confidence interval (CI) 0.589 - 0.953], DTF (AUC=0.806, 95%CI 0.661 - 0.951), SM (AUC=0.838, 95%CI 0.695 - 0.981) were independent factors that affected the results of withdrawal. The single parameter AUC was smaller than the combined index with RSBI≤70.48 times·min–1L–1, DTF≥30.0%, SM≥10.0 kPa as the cutoff value (AUC=0.937, 95%CI 0.714 - 1.0, diagnostic sensitivity, specificity and accuracy were 94.9%, 84.6% and 92.3% respectively). Conclusions SWE technology provides a new quantitative index for evaluating diaphragm function by evaluating diaphragm stiffness. Diaphragm stiffness combined with DTF and RSBI can better predict the successful withdrawal in patients with mechanical ventilation.

微创胸膜腔置管注入尿激酶治疗结核性胸腔积液

【摘要】 目的 探讨微创胸膜腔置入中心静脉导管(简称导管)注入尿激酶治疗结核性包裹性胸腔积液(简称积液)的临床价值。方法 2008年6月-2009年8月在正规抗结核治疗基础上,选取确诊积液患者72例,按数字随机法分为治疗组和对照组,治疗组36例经超声引导导管置入胸膜腔并注入生理盐水50 mL加尿激酶10万 U,对照组36例多次穿刺抽液,比较两组疗效及积液引流量、胸膜厚度、积液吸收时间等。结果 治疗组28例显效,5例好转,3例无效;对照组10例显效,13例好转,13例无效,两组疗效差异具有统计学意义(Plt;0.05)。治疗组与对照组平均积液引流量分别为1 421 mL和756 mL,胸膜厚度分别为(1.9±0.4) mm和(3.7±1.2) mm,积液吸收时间分别为(13.3±1.2)d和(17.3±1.6)d,两组间比较差异均有统计学意义(Plt;0.05)。结论 超声引导导管置入胸膜腔并注入尿激酶治疗结核性包裹性胸腔积液疗效显著,可增加引流量,减轻胸膜肥厚,改善肺功能,减少穿刺机会。

Experience sharing of ultrasound-guided endovascular treatment for femoropopliteal arteriosclerosis obliteran: clinical analysis of 112 cases

ObjectiveTo analyze the safety and effectiveness of ultrasound-guided endovascular treatment for femoropopliteal arteriosclerosis obliteran (ASO). MethodsThe clinical data of patients with femoropopliteal ASO were collected and analyzed. The patients were treated by ultrasound-guided endovascular intervention in the Xijing Hospital of Air Force Military Medical University, from March 2015 to June 2021. The endovascular intervention methods included the arterial balloon dilation (ABD) alone, stent implantation (SI), Rotarex mechanical thrombus removal (Abbreviationas: Rotarex), and thrombolytic catheter implantation (CDT), etc. ResultsAll 112 patients (121 affected extremities) who met the research criteria were collected. Among them, there were 13, 68, and 40 affected extremities by the Rutherford classification of 2, 3, and 4, respectively, while 41, 39, and 41 affected extremities by the Trans-Atlantic Inter-SocietyConsensus Ⅱ classification of A, B, and C, respectively. Among 121 affected extremities, 61 underwent the ABD alone, 27 underwent ABD plus Rotarex, 12 underwent ABD plus SI, 6 underwent ABD plus SI plus Rotarex, 3 underwent ABD plus SI plus CDT, 7 underwent ABD plus CDT plus Rotarex, and 5 underwent ABD plus CDT. The ultrasound-guided endovascular treatments were completed successfully in 118 affected extremities (the success rate was 97.5%), and 3 affected extremities were not completely completed by ultrasound guidance. After operation, 5 affected extremities had pseudoaneurysm and 7 affected extremities had hematoma at the puncture site, which were cured after conservative management. The ankle-brachial index (ABI) of the affected extremities immediately after surgery was statistically higher than that before surgery [0.89±0.13 vs. 0.53±0.09, mean difference (95% confidence interval)=0.36 (0.34, 0.38), paired t-test (t=–25.17), P<0.001]. After a follow-up of 12 months, one patient had a metatarsal amputation and one patient died (acute myocardial infarction). The restenosis rate and reintervention rate of the target lesions were 25.0% (30/120) and 15.0% (18/120) at 12 months postoperatively, and the late loss of diameter was (0.88±0.25) mm. The ABI was still higher than before surgery [0.78±0.13 vs. 0.53±0.09, mean difference (95% confidence interval)=0.25 (0.22, 0.27), paired t-test, t=–17.61, P<0.001]. ConclusionFrom analysis results of this data, it can be seen that, ultrasound-guided endovascular intervention is a safe and effective treatment for selective femoropopliteal ASO.

糖尿病视网膜病变全视网膜光凝前后的视网膜中央动静脉多普勒超声血流变化