初发和复发性脑梗死患者凝血功能指标分析

目的:分析初发和复发性脑梗死患者凝血功能指标的变化。方法:采集46例初发脑梗死患者(初发脑梗死组)和57例复发脑梗死患者(复发脑梗死组)的血液标本,应用CA7000全自动凝血仪检测血浆凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、凝血酶时间(TT)、纤维蛋白原(FIB)以及D-二聚体(D-Dimer)5项凝血指标,并与97例健康人群(健康对照组)对照分析。结果:与健康对照组比较,脑梗死患者PT、APTT、TT时间明显缩短(P<0.05或P<0.01),FIB和D-Dimer水平显著升高(P<0.05或P<0.01);复发脑梗死与初发脑梗死组PT、TT差异无统计学意义(P>0.05),但复发脑梗死患者APTT明显缩短(P<0.01),FIB和D-Dimer水平显著升高(P<0.01)。结论:脑梗死患者PT、APTT、TT、FIB、D-Dimer水平明显异常,复发脑梗死较初发脑梗死更严重。     

米非司酮对药流患者凝血功能的影响

目的 探讨米非司酮对药流患者凝血酶原时间( PT) 、活化部分凝血活酶时间( APTT) 、凝血酶时间( TT) 、纤维蛋白原( FIB)影响.方法 检测412例药物流产孕妇服用米非司酮前后PT、APTT、TT 和FIB 值.结果 服药前后的PT、APTT、TT 和FIB 值比较差异无统计学意义( P>0.05).结论 米非司酮对PT、APTT、TT 和FIB 值无影响,如阴道流血多需及时清宫.     

不同采血量和离心转速对凝血的影响

目的探讨不同采血量和凝血标本离心转速对凝血项目检测结果的影响。方法随机选取健康成人20例,于清晨空腹采血,在真空采血管中分别加入1、1.5、2、2、2.5、3、3.5 ml全血,以标本2 m L血为标准采血量,分析不同采血量和不同离心力下凝血酶原时间(PT)、部分激活促凝血酶原激酶时间(APTT)、凝血酶时间(TT)、纤维蛋白原(FIB)和D二聚体(D-D)结果的差异性。结果采血量为1 ml,PT、APTT和TT时间明显延长;当采血量为1.5 m L,PT和APTT时间明显延长;而当采血量为3.5 m L,TT时间缩短;与转速3 500 r/min相比,高速离心后PT和APTT的检测结果有统计学差异。结论准确的采血量和离心条件是检验分析前标本质量控制的重要前提,加强标本分析前的质量控制,提高检验结果的准确性,才能将精准医疗的理念落到实处。     

凝血指标在系统性红斑狼疮疾病中的临床应用

目的:检测系统性红斑狼疮(SLE)患者外周血中凝血指标及其相关指标来评价临床意义。方法:选用46例SLE患者为观察组,其中活动组26例,非活动组20例;40例正常人为对照组。测定血浆凝血酶原时间(PT),活化部分凝血活酶时间(APTT),血浆纤维蛋白原(FIB)和凝血酶时间(TT),血浆D-二聚体(D-Dimer,D-D)和纤维蛋白(原)降解产物(FDP),血浆抗凝血酶活性(AT:A);其他实验相关指标C反应蛋白(CRP),血沉(ESR)。结果:SLE组D-D及FDP明显高于对照组,PT及APTT比对照组明显缩短(均P<0.01),其他各指标均无统计学意义;SLE活动组ESR、CRP、D-D明显高于非活动组(均P<0.01),而FDP差别无统计学意义。结论:D-D及凝血指标能及时反映SLE患者体内凝血和纤溶系统失衡情况,对于SLE病程发展和控制有其重要的临床指导价值。     

肝病患者的凝血功能检测分析

目的 探讨肝病患者的凝血功能变化,以来判定肝脏疾病患者肝功能损害程度.方法 收集我院肝病患者共100例,采用凝固比浊法来测定血浆凝血酶原时间(PT)、凝血酶时间(TT)、活化部分凝血活酶时间(APTT)、纤维蛋白原(FIB)的含量,并与正常对照进行比较.结果 急性肝炎组中血浆PT、TT、APTT、FIB含量与正常对照组比较差异无显著性(P＞0.05)无统计学意义;肝硬化组、慢性肝炎组与正常对照组比较血浆PT、TT、APTT、FIB含量均存在着显著性的差异(P<0.05)有统计学意义.结论 监测肝病患者的PT、APTT、TT、FIB血浆水平,能较好地反映肝功能状况并评估肝脏受损程度,对临床的治疗及疗效观察提供了科学的依据.     

窒息新生儿凝血功能变化

目的:检测分析窒息新生儿凝血功能部分指标的变化及其临床意义。方法:回顾性分析554例新生儿凝血四项指标:凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、凝血酶时间(TT)、纤维蛋白原含量(FIB)的检查资料,分为正常新生儿组(n=32)、轻度窒息足月新生儿组(n=143)、重度窒息足月新生儿组(n=85)、早产儿组(n=215)及窒息早产儿组(n=79),分析各组PT、APTT、TT、FIB结果并作统计学比较。结果:以上各组四项指标数据经方差分析,差异有统计学意义(F值分别为8.41、13.18、7.30、3.19,P均0.05)。两两比较结果显示,与正常新生儿组比较,轻度窒息足月新生儿组PT、APTT、TT、FIB差异均无统计学意义(P0.05),早产儿组PT、TT、FIB亦无统计学差异(P0.05),只有APTT延长(P0.05);窒息早产儿组、重度窒息足月新生儿组PT、APTT、TT明显延长而FIB浓度明显降低(P均0.05)。窒息早产儿组PT、APTT、TT较早产儿组显著延长而FIB浓度降低(P均0.05)。重度窒息足月新生儿组PT、APTT较轻度窒息足月新生儿组延长,FIB水平较轻度窒息新生儿组降低,差异有统计学意义(P0.05)。结论:窒息早产儿和重度窒息足月新生儿凝血功能变化明显。     

妊娠女性凝血-抗凝-纤溶系统功能检测的临床应用价值

目的:探讨妊娠期女性凝血、抗凝和纤溶系统功能检测的临床价值。方法:选择2019-01—2019-04期间本院进行产前检查的女性927例(观察组),选取同期本院体检的健康女性270例作为对照组,对以上两组凝血、抗凝和纤溶指标[血浆凝血酶原时间(PT)、部分活化凝血活酶时间(APTT)、血浆凝血酶时间(TT)、纤维蛋白原(FIB)、抗凝血酶原-Ⅲ(AT-Ⅲ)和D二聚体(D-D)]进行检测分析并比较组间差异。结果:观察组血浆PT、APTT、TT、AT-Ⅲ水平均明显低于对照组,而FIB和D-D浓度明显高于对照组(P均0.01),APTT、FIB、AT-Ⅲ和D-D四项指标异常率明显高于对照组(P均0.01),而PT和TT两项指标异常率与对照组差异无统计学意义(P0.05)。结论:妊娠期女性血液呈高凝状态,加强孕妇凝血、抗凝和纤溶系统功能的监测,对及时了解孕妇凝血状态,提升孕妇安全,防治并发症有重要指导意义。     

临产孕妇凝血四项指标的变化及临床意义

为了解临产孕妇的凝血功能情况，本文检测了205例临产孕妇的凝血四项指标：即凝血酶原时间(FT)、活化部分凝血活酶时间(APTT)、纤维蛋白原(FIB)、凝血酶时间(TT)，结果报告如下。     

妊娠期妇女血浆纤维蛋白原生成和降解水平变化

目的:分析正常妊娠期妇女凝血以及纤维蛋白原生成和降解指标的变化特征,初步探讨孕妇妊娠期间的出凝血动态变化.方法:正常妊娠并顺利分娩的孕妇96例,序贯观察她们整个孕期和产后4-9周的活化部分凝血酶原时间(APTT)、凝血酶原时间(PT)、凝血酶时间(TT)、纤维蛋白(Fg)含量、纤维蛋白(原)降解产物(FDP)含量以及F...     

慢性阻塞性肺疾病急性加重期患者治疗前后C-反应蛋白水平和凝血-纤溶功能变化

目的:检测分析外周血C-反应蛋白(CRP)、凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、凝血酶时间(TT)、纤维蛋白原(FIB)和D-二聚体(D-D)水平在慢性阻塞性肺疾病急性加重期(AECOPD)患者治疗前后的动态变化。方法:81例AECOPD患者(观察组)分别于入院及规范治疗7天后抽取外周静脉血,按临床实验室常规方法检测CRP、PT、APTT、TT、FIB及D-D水平,以同期81例体检健康人群作为对照组。结果:与对照组比较,观察组治疗前CRP、PT、FIB及D-D水平均升高(P0.05),治疗后与治疗前比较,CRP、PT、FIB、D-D水平明显降低(P0.05);PT降至对照组水平(P0.05)。结论:动态监测AECOPD患者CRP、凝血-纤溶指标,对了解患者病情、观察治疗效果有重要意义。     

Influence of the contact time on coupling time and a simple method to measure coupling time

The enhancement of performance in stretch shortening cycle (SSC) exercises has been attributed to the recoil of elastic energy stored during the stretching phase and depends on the duration of the coupling time (T _coupling) i.e., the duration of the isometric phase occurring between the stretch and the shortening of the muscle. However, instead of T _coupling, the contact time (T _contact)—i.e., the sum of T _coupling plus the duration of the stretching and shortening phases that precede and follow T _coupling—is more easily and often measured. The aim of this study was to investigate the T _coupling changes within a large range of T _contact, in order to propose a possible relationship between T _coupling and T _contact, thus allowing the accurate measurement of T _coupling only from a tachometer and force data obtained classically in vertical jumps, jumps on sledge apparatus and running on force treadmills. Eleven subjects performed SSC exercises on a sledge apparatus with a large range of T _contact (400, 700, 1,000, 1,500, 2,000 and 2,500 ms). The T _coupling and T _contact values were measured individually, from force platform recordings and the velocity of the carriage seat obtained by a tachometer. For the longest T _contact (i.e., from 850 to 2,500 ms), we observed a significant linear relationship between T _contact and T _coupling. This transition between T _contact shorter or longer than about 850 ms seems to be important and to correspond to T _coupling close to 300 ms. This limit observed in the present study could be explained physiologically due to a possible modification of the cross-bridges formation.     

Effects of prolonged exercise on the contractile properties of human quadriceps muscle

The contractile properties of the quadriceps muscle were measured in seven healthy male subjects before, during and after prolonged cycling to exhaustion. Special efforts were made to obtain measurements immediately after exercise. The exercise intensity corresponded to about 75% of estimated maximal O₂ uptake and time to exhaustion was mean 85 (SEM 9) min. At the end of the cycling heart rate and perceived exertion for the legs were 94% and 97% of maximal values, respectively. Maximal voluntary isometric force (MVC) had decreased after 5 min of exercise to a mean 91 (SEM 4)% of the pre-exercise value (P < 0.05) and decreased further to a mean 82 (SEM 6) and mean 66 (SEM 5)% after 40-min cycling and at exhaustion, respectively. A new finding was that during recovery reversal of MVC occurred in different phases where the half recovery time of the initial rapid phase was about 2 min. The MVC was a mean 80 (SEM 2)% of the pre-exercise value after 30 min and was not affected by superimposed electrical stimulation. Maximal voluntary concentric and eccentric forces decreased to 74% and 80% o of initial values at exhaustion (P < 0.05). The kinetics of isometric contraction expressed as the time between 5% and 50% of tension (rise time) and the time between 95% and 50% of tension (relaxation time) were not significantly affected by the prolonged cycling. The electromechanical delay measured as the time between the first electrical stimulus and 5% of tension decreased from a mean 32 (SEM 1) ms at rest to a mean 26.6 (SEM 0.6) ms at fatigue (P < 0.05). It is concluded that prolonged exhausting cycling results in reduced force-generating capacity during isometric, concentric and eccentric conditions. The absence of a slowing of relaxation and the incomplete reversal of MVC after 30 min of recovery indicate that the mechanism(s) of fatigue during prolonged exercise involve other components than those involved during high intensity exercise.     

The Obstetrics Gynecology and Children's Hospital Emergency Room waiting time before hospitalization

Background

One of the most substantial factors affecting patient satisfaction in the Obstetrics−Gynecology and Children''s Hospital is the wait time in the emergency room.

Objective

We retrospectively studied the waiting periods of patients visiting the emergency room patients in Bolu Izzet Baysal Obstetrics-Gynecology and Children''s hospital.

Method

Using an automated documentation system for each patient that recorded the season in which the patients consulted the emergency room, the month, day, time, examination time, hospitalization decision time, the hospitalization clinic following the decision to hospitalize, and the time to hospitalization, we retrospectively studied the waiting periods of emergency room patients in Bolu Ýzzet Baysal Obstetrics−Gynecology and Children''s Hospital.

Results

A total of 15,004 patients who consulted the hospital emergency room between November 24, 2009, and August 25, 2011, and who were hospitalized in a clinic were included in this study. The highest frequency of emergency room patient visits occurred during the summer season (28.1%), in the month of July (10.2%), on Mondays (16.1%), and between 8 and 11 AM (22.1%; p < 0.05). The emergency room wait time of patients consulting the pediatric clinic was (55 ± 67 min), which was significantly shorter than the wait time of patients consulting other clinics (p < 0.05).

Conclusion

The majority of patients who were hospitalized in any clinic through the emergency room consulted the hospital during the daytime hours. The time to hospitalization for the admitted patients was within an acceptable time frame. We believe that conducting comprehensive research to determine whether it is possible to reduce wait times even further to increase patient satisfaction will be instructive.     

Trait-anxiety dependence of movement time performance in a bimodal choice task in subjects exposed to moderate anxiogenic conditions

Recent studies have provided insight into the interdependence between state-anxiety, trait-anxiety and motor performances. In the present study, we investigated in very low trait-anxiety (VLTA) and normal trait-anxiety (NTA) subjects, the effects of moderate state-anxiety induced by the video-recorded Stroop color word interference test, on reaction time and movement time in bimodal choice response time task providing either visual or auditory modality. We found that in anxiogenic condition, movement time performances were improved in visual modality in NTA subjects, and in auditory modality in VLTA subjects. Our results show that depending on their trait-anxiety level, individuals exposed to anxiogenic condition would allocate attentional resources towards a specific relevant modality. Such attentional resources would influence movement time, but not reaction time.     

The Effect of Modification of Baroreceptor Activity on Reaction Time

The Laceys' hypothesis that baroreceptor stimulation has a direct effect on performance was tested by experimental manipulation of baroreceptor activity while subjects performed reaction time tests. Baroreceptor activity was altered by varying external cervical pressure and hence carotid sinus transmural pressure. The physiological effects of the baroreflex on heart rate and pulse transit time (a measure which generally correlates well with blood pressure) were seen both when baroreceptor stimulation was increased and when it was decreased. However, no difference in reaction time was found between the two conditions, therefore failing to support the Laceys' hypothesis.     

窒息对早产儿凝血功能影响的临床分析

目的探讨窒息对早产儿凝血功能的改变。方法对56例窒息早产儿和45例无窒息早产儿进行PT、APTT、TT、Fbg检测。结果窒息早产儿PT、APTT、TT均延长，与无窒息早产儿相比差异有显著性（P〈0．05），Fbg相比无统计学差异（P〉0．05）。结论窒息早产儿处于低凝血因子状态，易患出血性疾病，应及早监测凝血指标，采取有效预防措施，纠正出、凝血障碍。     

The Cardiac and Vascular Components of Pulse Transmission Time: A Computer Analysis of Systolic Time Intervals

Systolic time interval methodology was used to explore the relative contributions of intracardiac and vascular delays to modifications in pulse transmission time elicited by a series of behavioural and physical challenges. The following variables were recorded on every cardiac cycle: interbeat interval (IBI), the interval between Q and R wave of the EKG, Q wave to pulse arrival (QPT) at the ear and wrist, left ventricular ejection time, and cardiac pre-ejection period (PEP). The true arterial pulse transit time (PTT), inversely related to pulse wave velocity, was calculated by subtracting PEP from QPT. Modifications of QPT were generally associated with PEP rather than PTT responses. But QPT to the ear and wrist were not equivalent; PEP showed closer correlations with QPT to the ear, while PTT was correlated more consistently with QPT to the wrist. Similar patterns were observed with monitoring from the Q and R waves of the EKG. Important differences also emerged between individuals in the degree to which QPT reactions were correlated with the cardiac or vascular components. A supplementary analysis of correlations between blood pressure and the components of QPT was carried out through hand-scoring of systolic time intervals. Both PEP and PTT contributed to the correlations of systolic pressure with QPT. The uses of pulse transmission times as indices of pulse wave velocity, or alternatively of PEP and ventricular contractility, are considered.     

Doctor when can I drive? Braking response after knee arthroplasty: A systematic review & meta-analysis of brake reaction time

BackgroundThere is limited evidence available on return to driving for patients undergoing knee arthroplasty (KA). Primarily, surgeons have used brake reaction time as a surrogate measure of safe return to driving. The purpose of this study was to review existing literature and provide guidance on the recovery of braking performance following knee arthroplasty.MethodsA literature search was performed for prospective studies on driving after KA. Two reviewers screened citations for inclusion, assessed methodological quality, and extracted data. Values for total brake reaction-time (TBRT), movement-time (MT), reaction-time (RT), and braking-force (BF) were included for meta-analysis.ResultsTwelve studies with 368 subjects were identified. TBRT, RT, MT, and BF relative to preoperative baseline were assessed. Meta-analysis of TBRT showed a significant improvement from preoperative baseline at 3 months & 1 year (p = 0.003 & p = 0.0001). MT showed a significant increase at 2 and 4 weeks (p = 0.00001 & p = 0.03) before returning to no being significantly different at 6 weeks and beyond. In contrast RTs were noted to improve significantly 2 weeks (p = 0.006), 4 weeks (p = 0.03), and 1 year (p = 0.0002).ConclusionMeta-analysis showed no significant difference in TBRT up until 3 months. RT increased significantly post-operatively suggesting it is not a reliable indicator. MT in contrast was significantly decreased post KA and may represent a more reliable measure of braking performance post KA. Surgeons should consider these recommendations and other patient factors that determine fitness to drive prior to advising their patients on a safe to return to driving.     

精液优化后置时间与受精时间对胚胎质量的作用评价

目的探讨精液优化后置时间与体外受精时间对胚胎质量评价。方法 61个IVF周期,共获卵610枚:实验组:200枚卵子,精液优化后2h制作精子微滴加入培养后卵子,待2h后将拆除部分颗粒细胞的受精卵转移至新鲜的受精微滴皿中,培养14h-16h;对照组:410枚卵子,常规精液优化后2h,制作精子微滴加入培养后卵子,培养受精16h-18h。两组均在次日拆蛋,观察原核及受精情况,受精66h-72h观察其卵裂,并进行胚胎评分,比较两组的受精率、卵裂率、可利用胚胎率、优质胚胎率。结果实验组的受精率、卵裂率、可利用胚胎率分别为:77%、96.1%、59.5%;对照组为:74.6%、94.1%、53.4%;两组受精率、卵裂率、可利用胚胎率比较结果无统计学差异,P0.05。但实验组中可利用胚胎率较高于对照组;实验组的优质胚胎率为:53.4%较对照组43.4%高,统计学比较有显著性差异P0.05。结论降低精液优化后置时间和缩短受精时间不仅不影响胚胎的受精率、卵裂率;且会提高胚胎的可利用胚胎率、优质率,延伸临床的种植潜能,增加患者周期妊娠率。     

Estimation of Half From Quarter Recovery Time of SCR

In many cases where SCR half-recovery time cannot be measured because of post-peak activity, quarter-recovery time is measurable. Prediction of half from quarter recovery times is examined and the calculation of loge t/2 values for loge t/4 values is recommended.