数字心电图机计量检定项目的意义

数字心电图机在临床上发挥着重要作用,对数字心电图机开展计量检定是非常必要的,本文详细阐述了数字心电图机的主要计量检定项目的含义.     

医院心电图机的检定管理与质量保障

目的 通过对心电图机的检定管理,探讨医疗计量设备的质量保障.方法 运用医院管理学、临床医学和社会学相关理论,结合现阶段医疗服务体系改革讨论医疗设备的管理.结果 对心电图机实施的强制检定直接提升该仪器质量的合格率,有效地保证了临床的应用需要.结论 坚持正确地医疗计量设备管理制度,是医院整体管理的重要组成部分,鉴于计量器具种类繁多和使用分散,只有踏实做好这项工作,才能进一步推动医疗设备的质量保障,发挥其积极作用.     

心电图机检修与计量检定

本文介绍了检修心电网机时应注意的事项和检修方法,以及心电图机计量检定中须重视的问题.     

检定心电图机技术数据的简化处理

检定心电图机技术数据的简化处理西宁市第一人民医院王丽清为了确保心电图机技术性能的准确、稳定性，对人民健康负责，国家将医用心电图机列入了强制检定范围。根据中华人民共和国国家计量检定规程ＤＧ××──××（心电图机检定规程）检定；按照此规程技术要求计算各项...     

重视心电图机计量性能经常检查

重视心电图机计量性能经常检查青海医学院附属医院医疗器械科李怡先进的医疗设备是现代化医院的物质基础，医院的计量管理也随着设备的增加逐步重视起来，心电图机被列入了计量器具的强制检定目录，本文就如何正确使用心电图，并通过仪器使用人员的日常检查和维护，使机器...     

汞柱血压计的快速检定方法简析

本文介绍了血压计的工作原理和计量检定的方法,所用检定标准器具为血压计检定装置,对检定中应注意的问题作了强调和提示.     

心电图机的临床校验、使用与维修

心电图检查目前已成为一种临床诊断心血管疾病常用的检查方法之一。为了做出正确的诊断,心电图的记录必须准确、清晰;心电图机必须完好,无故障;工作者必须是操作熟练并有一定维修经验的人员。而目前基层临床心电图工作者,部分人员未经过专业心电图机维修训练,手边又无维修仪器(如万用电表、通用示波器等),为保证临床工作顺利进行,必须掌握购置理想心电图机的方法,机器的正确使用,常见故障的分析和处理。本文将重点讨论在没有更多检查仪器情况下,使用心电图机标准信号进行校验的方法以及临床常见故障的排除。     

关于 JJG919-96pH计规程中高阻检定的商榷

本文是对JJG919-96pH计检定规程中高阻检定存在的问题进行商榷.     

柱晶白霉素的生物效价测定及其可靠性测验,误差分析与合并计算

本文在运用不同检定菌种、不同检定方法研究和建立柱晶白霉素微生物检定方法的同时,根据生物统计学的原理,以方差分析法对柱晶白霉素的生物检定结果进行可靠性测验与误差分析及其合并计算,将可信限率控制在国际上要求的5％以下。     

584台台式血压计检定不合格原因的分析及故障排除

通过对 584台台式血压计检定结果进行统计分析，找出不合格的原因。在检定中对不合格或合格但性能较差的血压计立即维护修理，更换配件或调整机械结构，然后再检定。通过检定—维修—再检定的循环过程，使每台血压计达到合格并处于测量准确的状态，在医疗诊断中，对保证医疗质量和人民群众的身体健康及生命安全有重要意义。     

直肠癌静态与动态调强放疗计划剂量验证的探讨

目的：比较静态和动态调强放疗（IMRT）计划在直肠癌放疗过程中剂量的准确性。方法选取我院12例直肠癌动态IMRT计划和12例直肠癌静态IMRT计划,采用二维电离室矩阵对其进行点剂量和面剂量的验证。结果参照3%/3 mm标准,动态IMRT计划24个照射野以及静态IMRT计划24个照射野的面剂量的γ通过率均值分别为99.2%和97.6%,二者比较差异有统计学意义（P＜0.05）。动态和静态IMRT计划点剂量的误差均值分别为1.8%和3.1%,二者比较差异有统计学意义（P＜0.05）。结论在加速器正常运行状态下,静态和动态IMRT计划都可以应用于直肠癌调强放射治疗,但在验证剂量精确性上,动态IMRT计划优于静态IMRT计划。     

全景X射线牙片机辐射检定和质量控制

目的：保证全景X射线牙片机正常工作,并确保其辐射安全性。方法采用比拉那型X射线剂量计对4种全景牙片机辐射输出的空气比释动能率、重复性以及质量进行检测。结果此次检定的全景X射线牙片机基本可较好地达到JJG744-2004《医用诊断X射线辐射源检定规程》的指标要求。结论辐射检定是全景牙片机医学检定的重要组成部分,为制定辐射检定规范提供了参考。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.