患者睡觉的时候可能会有10到25秒的时间是没有呼吸的，这会减少血流和大脑的供氧量。
While asleep, suffers may stop breathing for between 10 to 25 seconds at a time, depleting the bloodstream and brain of vital oxygen supplies.
观察两组麻醉起效、完善时间，局麻药用量，麻醉前后血流动力学变化。
Onset of anesthesia were observed, perfect time for local anesthetic dosage, hemodynamic changes before and after anesthesia.
但复苏后维持血流动力学稳定时间较短。
目的：探讨心肌声学造影时间-强度曲线（TIC）各项参数定量评价冠脉血流储备（CFR）的可靠性及反映CFR的可靠指标。
Objective:To study on reliability and reliable indexes of quantitative assessment of coronary flow reserve(CFR)by time intensity curve(TIC)with myocardial contrast echocardiography.
结果PDI能够更好地反映狭窄血管的真实形态，明显增加肾动脉的显示长度和血流的稳定性，减少检查时间。
Results PDI provides better morphologic feature, better renal artery length and better flow stability, as well as a shroter exam time.
主要观察指标：测定创伤后相应时间点大鼠脑组织局部脑皮质血流速度。
MAIN OUTCOME MEASURES: It was to determine the blood flow rates in local cerebral cortex at corresponding time spots after traumatic injury.
然而，不象雷诺现象，其血流恢复期并不延迟，也无长时间的明显皮肤颜色改变。
However, unlike rp, the recovery phase of vascular flow is not delayed and there is no prolonged sharp demarcation of color changes in skin.
经过了2 -3周的时间，绕道血流量通常会使侧枝循环以扩大其直径3至4倍，此过程称为侧枝循环的重塑。
Over a period of 2-3 weeks, the flow of detoured blood usually causes the little collaterals to enlarge their diameters by 3 to 4 fold through a process called collateral remodeling.
把低语传入血流：它是时间。
本研究应用彩色多普勒血流会聚新方法评价了对二尖瓣狭窄的定量诊断，并与二维超声、压力降半时间及综合法测量二尖瓣狭窄进行了比较。
The quantification of mitral stenosis by using a new color Doppler flow convergence method was evaluated, and compared with two -dimensional echocardiography, pressure half- time and combined method.
在6小时后，肝内出现最高的蓄积，表明与常规的核磁共振影像造影剂相比，纳米颗粒在血流中有一个延长的循环时间。
Maximum liver accumulation was found after 6 h, suggesting a prolongated circulation of the nanoparticles in the bloodstream as compared to conventional MR imaging contrast agents.
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
结果LAD供血区域心肌的AII值、CVIB值及心肌血流灌注图像在LAD结扎前、结扎时、恢复再灌注后不同时间内发生了一系列变化。
Results AII and CVIB and myocardial perfusion imaging of regional myocardium which was supplied by LAD were presented a series of changes in various times.
以时间为横坐标及观察期BP和HR的变化为纵坐标计算气管插管后观察期血流动力学时-效关系曲线下面积（AUE）。
The areas under effect-time curve (AUE) of hemodynamics were calculated by time as X-axis and changes of BP and HR during the observation as Y-axis.
比较两组介入治疗时平均X线曝光时间、造影剂用量、术后TIMI血流分级和心电图ST段变化。
The time of X-ray exposure, the amount of contrast media consumed, the TIMI grading after stenting and ST-segment changes of electrocardiogram were compared between two groups.
通过对椎动脉收缩期切迹组与无切迹组做束臂试验，比较束臂前后收缩期血流速度下降幅度及流速自下降至恢复的时间。
Compare the decline in blood flow velocities and its recovery time before and after Trousseau's test in vertebral waveform with or without notch at systole.
目的应用超声造影观察门静脉右支开始显影时间，以及彩色多普勒流速剖面技术检测门静脉右支血流速度和血流量，以探讨其在判断肝硬化程度中的临床价值。
Aim: To probe the clinical value in the assessment of liver cirrhosis degree by arrival time of right portal vein with contrast-enhanced ultrasonography and velocity and flow volume with CDVP.
结论：针刺留针时间与脑血管血流速度之间有一定的时效关系。
Conclusion: Improving cerebral blood flow velocity is one of the mechanisms in the time-effect relationship of acupuncture treating ischemic stroke.
结论高渗高胶液维持血流动力学平稳时间较长，是治疗失血性休克的理想液体。
Conclusion HHS can maintain hemodynamics steadily for longer time, so it is an effective kind of treatment fluid for hemorrhagic shock.
目的研究不同时间窗低分子量肝素治疗急性脑梗死的疗效及其对患者脑血流量和脑电图的影响。
Objective To observe the influence of low molecular weight heparin on cerebral blood flow and brain function in patients with acute cerebral infarction in different therapy time window.
对确定脉体有价值的指标是寸口脉管壁的厚度、管腔内径、管腔面积和血流量的大小以及寸口脉血流柱的长度、峰值流速血流、加速度和减速时间。
The thickness of blood vessels, inside diameter, area, flow, the length of color flow column, maximum velocity, acceleration and deceleration time were of good value on pulse tension.
结果随着种植时间的延长、肿瘤的增大，肾动脉的内径逐渐增宽，血流量逐渐增多。
Results as the implantation time elongating and the tumor enlarging, the diameter of renal artery became wider, and blood flow increased gradually.
通过扫描软件得出肝血流量（BF）、血容量（BV）、对比剂平均通过时间（MTT）、渗透表面积乘积（PS）、肝动脉灌注指数（HAF）。
The liver perfusion parameters including hepatic blood flow(BF), blood volume(BV), mean transit time(MTT), permeability surface area product(PS) and hepatic arterial fraction (HAF)was calculated.
结果，在母体表现出任何体征前胎儿可能长时间经历血流灌注不足。
As a result, the fetus may be experiencing hypoperfusion long before the mother manifests any signs.
结论声学造影后肝实质时间强度曲线可以反映肝硬化时大鼠肝脏微循环与血流动力学改变，有望成为诊断肝硬化的新方法。
Conclusion tic of liver parenchyma after contrast ultrasound can reflect the changes of hepatic microcirculation and hemodynamics in liver cirrhosis, which is hopeful to be a new diagnostic method.
血压(动脉血压)是因心脏泵血产生的血流对动脉血管壁的压力，如果血压升高并保持高位时间过久，就会对身体造成多方面的损害。
Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps. If blood pressure rises and stays high over time, it can damage the body in many ways.
用彩色多普勒超声血流仪检测血管中央的时间-流速，以评估血流量的基线。
The baseline flow was estimated with continuous-wave Doppler by recording the time-velocity at mid-vessel.
再与肝血流灌注相的早期充盈、时间活性曲线（TAC）、肝血池（平面及断层）显像、CT和彩超检查作对照。
Hepatic blood flow earlier perfusion phase, time-activity curve(TAC), hepatic blood pool phase(plane and tomography), CT and color ultrasound were compared as control group.
目的：比较单纯全麻和硬膜外复合全麻在60岁以上老年患者开胸手术中对患者血流动力学和苏醒时间的影响。
Objective:To observe and compare the influence of two different anesthesias on the homodynamic and awakening time of patients over 60 receiving thoracic surgery.
目的：比较单纯全麻和硬膜外复合全麻在60岁以上老年患者开胸手术中对患者血流动力学和苏醒时间的影响。
Objective:To observe and compare the influence of two different anesthesias on the homodynamic and awakening time of patients over 60 receiving thoracic surgery.
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