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舒張性心理衰竭-在線瀏覽

2024-12-01 11:18本頁面
  

【正文】 l. J Am Coll Cardiol 2020。并探討 HFNEF潛在的發(fā)病機(jī)理 Heart Failure With Preserved Ejection Fraction in Outpatients With Unexplained Dyspnea: A PressureVolume Loop Analysis (J Am Coll Cardiol 2020。方塊代表靜息 (RE)狀態(tài)下、握拳 (HG)、抬腿 (LL)、注射硝普鈉(NI)和多巴酚丁胺 (DO)期間的舒張末容積 (EDV)和舒張末壓 (EDP)的平均值,水平誤差線表示 EDV的SEM,垂直誤差線表示 EDP的 SEM 25 20 15 10 5 80 100 120 140 160 EDV (ml) HG L L L L RE RE DO DO NI NI HG ED P (mmHg) ED P (mmHg) 握拳、抬腿、硝普鈉和多巴酚丁胺試驗(yàn)有助于HFNEF的診斷; 提示該兩藥物可用于急性 HFNEF的治療, 硝普鈉效果更好。 舒張末期僵硬度高(> mmHg/ml) 舒張末期僵硬度低(< mmHg/ml) HFNEF組 /對(duì)照組, n(%) 14(70) / 0(0) 6(30) / 10(100) 重度動(dòng)態(tài)二閉 (≥3/4), n 0 / 0 2(10) / 0 心室收縮不同步, % 26177。 5 / 19177。 CV0903CR0014 ? Aging is associated with decreases in the elastic properties of the heart and great vessels, which leads to an increase in systolic blood pressure and an increase in myocardial stiffness. ? The rate of ventricular filling decreases in part because of structural changes in the heart (due to fibrosis) and because of a decline in relaxation and pliance. ? 老齡后心臟和血管彈性降低 ,導(dǎo)致血壓增高及心肌僵硬度增加。 另有報(bào)道,舒張性心衰較收縮性心衰平均大 5歲。 22%男性 PLVEF。119:e391– e479. CV0903CR0014 ? Hypertension promotes: – myocyte hypertrophy (secondary to increased afterload) – myocardial fibrosis (increased collagen synthesis and decreased degradation) 高血壓導(dǎo)致心肌細(xì)胞肥大 (后負(fù)荷增加 ), 心肌纖維化 (膠原合成增加 ,降解減少 ), 已被認(rèn)為是 DHF的重要原因。117:25442565 引起舒張功能不全的常見病因: 高血壓 CV0903CR0014 引起舒張功能不全的常見病因: 糖尿病及高胰島素血癥 ? Diabetics now, we know, also have extensive microvascular disease. Glycosylated proteins or glycans are deposited in interstitium leading to stiffness 已知糖尿病的微血管病變 ,糖基化蛋白 或聚糖存在于間質(zhì),導(dǎo)致僵硬度增加。 CV0903CR0014 引起舒張功能不全的常見病因 : 節(jié)律異常 ? Atrial fibrillation causes l
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