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1. 心電図チュートリアル：SＴ波およびT波の変化ecg tutorial st and t wave changes [show details]
… Abnormalities of the U wave may be seen in the following circumstances: A prominent U wave may be indicative of hypokalemia Other conditions that may increase the amplitude of the U wave include bradycardia …
2. 産婦人科における超音波診断の基本原則および安全性basic principles and safety of diagnostic ultrasound in obstetrics and gynecology [show details]
… which an acoustic wave moves through a medium is dependent upon the density and resistance of the medium. Media that are dense will transmit a mechanical wave with greater speed… Real-time imaging also provides temporal relations of these interfaces . A-mode, or amplitude modulation, has not been widely used in obstetrics and gynecology ultrasound. The returning echo causes a …
3. 心筋における興奮収縮連関excitation contraction coupling in myocardium [show details]
… modulation of either the calcium transient or the response of the contractile apparatus to the calcium transient will also affect contractility. Such modulation may occur as… can also cause the depolarization of a neighboring fiber, and the electrical impulse occurs as a "wave" through the heart. The regulation and process of depolarization is somewhat different in pacemaker …
4. 早期再分極early repolarization [show details]
… low-amplitude T waves, lower T/R ratio (lead II or V5), and longer QTc interval . The authors suggested the combination of these parameters with J-wave amplitude and distribution of J waves may further… signal-averaging system to record depolarization markers, repolarization markers, and autonomic modulation, the incidence of late potentials in persons with VF was significantly higher in those with the …
5. 心拍変動の評価evaluation of heart rate variability [show details]
… Baroreflex activity (oscillations at relatively low frequencies that include so-called Mayer waves) also causes concomitant fluctuations in heart rate .… intervals does not necessarily reflect intact vagal modulation of the sinoatrial node.…