In recent years, many research show interstitial cells of Cajal(ICC)or interstitial Cajal-like cells, the pacemaking cells of rhythm motility in gut, not only exist in gastrointestinal tract, but also distribute in the organs out of digestive tract, which have auto-rhythm movement too.
近年研究表明胃肠道自主节律性运动起搏细胞——Cajal细胞(interstitial cells of Cajal,ICC)或Cajal样细胞(interstitial Cajal-like cells)不仅存在于胃肠道内,而且亦存在于消化道以外具有自主节律性运动功能的器官。
The results showed that compared with treadmill and bicycle exercise in fixed rate pacing mode,the exercise time and cardiac output of 41 pacemaker-dependent patients were significantly increased by 37%(347±63 VS 247±53s,P<0.001)and 52%(10.2±2.1L/min VS 6.7±1.6L/min,P<0.05)in rate adaptive pacing mode.
The occurrence of complications is related to the quality of pacemakers, operative manipulation and pacing mode The complications related to pacing system are 24 cases (533%) , 15 cases to the operative manipulations (333%), 6 cases(133%) to the pacing mode.
Results Within a mean clinical follow-up of 29.0±7.5 month, the QRS duration was significantly shortened by biventricular pacing compared with right ventricular or left ventricular pacing. [(169±26) ms vs (188±40) ms and (222±34) ms vs (212±42) ms, respectively].
Fair factor of long RTT flows can cause a sharp window increment that is easy to cause a bursty traffic, so a method called block-pacing was adopted.
In this paper, we analyze the problem of packet loss, and then propose ACWAP (Adaptive Congestion Window Adjustment plus Pacing) algorithm to reduce the loss rate of high-speed TCP.
Along with pacing algorithm for avoiding burstiness on short time scales, ACWAP uses delay information to estimate the network state and adaptively changes the increase parameter to 1 before congestion to reduce the number of dropped packets.
Three options are available for acute treatment of AFlut: rapid atrial pacing, DC cardioversion or administration of propafenone (600 mg oral) or flecainide (300 mg oral).
DC cardioversion is acutely successful, but recurrences of polymorphic VT are prevented only by accelerating the heart rate with isoprenaline (1-4μg/kg/min i.v.), atropine (0.5-1.0mg i.v.) or temporary right atrial pacing.
Background: The hyperpolarization-activated "If" current in the sinoatrial (SA) node participates in the spontaneous diastolic depolarization responsible for pacemaking function.
Consistently, the effect of 2 mM Cs+ to selectively block the HCN channels, on pacemaking was also lessened with age.
Although widely used in cardiac pacemaking, stimulation from the right ventricular apex seems to compromise left ventricular hemodynamics and to produce structural abnormalities in the long term.
These results concur with previous reports suggesting that realistic exposure concentrations of air pollution affect the pacemaking system of rats.
The observations made in 5 patients are presented, in whom the implantation of a permanent pacemaking device resulted in a drastic reduction of the highly elevated systolic blood pressure values and amplitudes.