T波
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- 1. T波(再分極)交互脈:技術面および臨床応用の概要t wave repolarization alternans overview of technical aspects and clinical applications [show details]
…ventricular repolarization, which is an important mechanism underlying reentrant arrhythmias . Despite the term "T-wave" alternans, alternating behavior may also involve the ST segment and U wave . The term …
- 2. 心電図チュートリアル:その他の診断ecg tutorial miscellaneous diagnoses [show details]
… unaltered), producing a characteristic J or Osborne wave, which represents distortion of the earliest phase of membrane repolarization The height of the Osborne wave is roughly proportional to the degree of hypothermia …
- 3. 急性心筋梗塞後の心突然死の発生率およびリスク層別化incidence of and risk stratification for sudden cardiac death after acute myocardial infarction [show details]
… T wave or repolarization alternans (TWA) refers to variability in the timing or morphology of repolarization occurring in alternate beats on the surface ECG . TWA is indicative of repolarization heterogeneity …
- 4. 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]
… measure of membrane repolarization. The QT interval is measured from the beginning of the QRS complex (either a Q or R wave) to where a tangent line drawn on the downslope of the T wave intersects with the …
- 5. 早期再分極early repolarization [show details]
… The term early repolarization (ER), also known as "J-waves" or "J-point elevation," has long been used to characterize a QRS-T variant on the electrocardiogram (ECG). Most literature defines ER as being …
English Journal
- The electrocardiogram of vertebrates: Evolutionary changes from ectothermy to endothermy.
- Boukens BJD, Kristensen DL, Filogonio R, Carreira LBT, Sartori MR, Abe AS, Currie S, Joyce W, Conner J, Opthof T, Crossley DA, Wang T, Jensen B.
- Progress in biophysics and molecular biology. 2019 Jul;144()16-29.
- The electrocardiogram (ECG) reveals that heart chamber activation and repolarization are much faster in mammals and birds compared to ectothermic vertebrates of similar size. Temperature, however, affects electrophysiology of the heart and most data from ectotherms are determined at body temperature
- PMID 30243548
- Tp-e interval, Tp-e/QT and Tp-e/QTc ratio in hypertensive patients with primary aldosteronism.
- Demirtas D, Erdem Sumbul H, Bulut A, Orhan Demirtas A, Gulumsek E, Koca H, Kemal Icen Y, Koc M.
- Clinical and experimental hypertension (New York, N.Y. : 1993). 2019 Jun;()1-6.
- Array Array
- PMID 31204516
- PMID 30855852
Japanese Journal
- Idiopathic Ventricular Fibrillation Manifesting Delta-wave during Hypothermia Treatment
- Miyoshi Miho,Kondo Hidekazu,Shinohara Tetsuji,Yufu Kunio,Nakagawa Mikiko,Takahashi Naohiko
- Internal Medicine 58(3), 401-404, 2019
- … When admitted to the hospital, his 12-lead electrocardiogram did not show Brugada-like ST elevation, early repolarization or delta-wave, in any leads. … During the treatment of hypothermia, the manifestation of delta-wave was documented, which disappeared after the cessation of this treatment. …
- NAID 130007601162
- A Slower Heart Rate and Therapeutic Hypothermia Unmasked Early Repolarization Syndrome in a Ventricular Fibrillation Survivor
- Hasegawa Kanae,Miyazaki Shinsuke,Morishita Tetsuji,Kaseno Kenichi,Hisazaki Kaori,Amaya Naoki,Uzui Hiroyasu,Tada Hiroshi
- International Heart Journal 60(1), 185-188, 2019
- … <p>Patients presenting with aborted cardiac arrest who display early repolarization generally are diagnosed with early repolarization syndrome. … We present here a patient in whom therapeutic hypothermia exacerbated the J-wave amplitude and morphology, which resulted in episodes of refractory ventricular fibrillation.</p> …
- NAID 130007557130
- A Slower Heart Rate and Therapeutic Hypothermia Unmasked Early Repolarization Syndrome in a Ventricular Fibrillation Survivor
- Hasegawa Kanae,Miyazaki Shinsuke,Morishita Tetsuji,Kaseno Kenichi,Hisazaki Kaori,Amaya Naoki,Uzui Hiroyasu,Tada Hiroshi
- International Heart Journal, 2019
- … <p>Patients presenting with aborted cardiac arrest who display early repolarization generally are diagnosed with early repolarization syndrome. … We present here a patient in whom therapeutic hypothermia exacerbated the J-wave amplitude and morphology, which resulted in episodes of refractory ventricular fibrillation.</p> …
- NAID 130007519976
★リンクテーブル★
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- 英
- T wave
- 同
- 再分極波 repolarization wave
- 関
- Ta波、冠性T波、心電図、ST-T変化
- see 心電図の読み方パーフェクトマニュアルp.36
T波の電気生理
- 心室筋の再分極相に一致して記録される心電図上の電位変化。通常QRS波と同じ極性となる → 心室筋の再分極の方向は脱分極の方向と逆なため
- 正常な心室筋の再分極の方向は、脱分極の逆。
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- なぜ、心内膜側で再分極が遅れるのか → 左室壁側にうける圧力の差により、心内膜下側の興奮時間が延長するのではないか。
正常のT波 心電図の読み方パーフェクトマニュアルp.36
- I,II,V2-V6:陽性
- aVR:陰性
- III,aVL,aVF,V1では陰性でもいい
- 高さ:12mm未満かつ、R波の1/10以上の高さ
- 若年者ではV2,V3に陰性T波がみられることがある。若年T波 juvenile T wave
T波の異常
- (未分類)
- 急性心筋梗塞超急性期:上行脚が上に凸のT波
- 高カリウム血症:テント状T
- その他疾患:僧帽弁狭窄症、脳血管障害急性期、急性心膜血腫
- 非特異的変化:体位、運動、過呼吸
異常
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- 関
- repolarize