多普勒超声和心导管测量阵发性心房颤动患者左心房压力的研究

摘要

Objective To study whether Doppler echocardiography can effectively predict the left atrial pressure (LAP) in paroxysmal atrial fibrillation (PAF) patients .Methods Thirty-one PAF patients underwent transthoracic and transesophageal echocardiography 1 day before radiofre-quency ablation .Deceleration time of pulmonary venous diastolic flow (DTD )and deceleration time of pulmonary venous systolic flow (STD ) were measured .Relation between Doppler echocardio-graphy parameters and LAP was analyzed .Results The LAP was 14 .45 ± 7 .60 mm Hg (1 mm Hg=0 .133 kPa) ,the DTD was 176 .97 ± 56 .74 ms ,the STD was 193 .97 ± 55 .17 ms .The DTD and STD were closely related with the LAP (r= -0 .63 ,r= -0 .81 ,P=0 .00) .Conclusion DTD and STD can accurately and noninvasively predict the LAP in PAF patients .%目的：探讨多普勒超声能否有效地预测阵发性心房颤动（PAF）患者的左心房压力（LAP）。方法选择PAF患者31例，导管射频消融术前1 d行经胸及经食管彩色多普勒超声检查，测左心房内径、LVEF、舒张期肺静脉血流衰减时间（DTD ）、收缩期肺静脉血流衰减时间（STD ）等相关参数；术中通过心导管测量LAP。对多普勒超声参数与LAP进行相关性分析。结果31例患者LAP（14．45±7．60）mm Hg（1 mm Hg＝0．133 kPa）、DTD （176．97±56.74）ms、STD （193．97±55．17）ms。DTD 和STD 与LAP呈负相关（r＝-0．63，r＝-0．81，P＝0．00）。结论DTD 和STD 可能是简便、可靠、无创性预测PAF患者LAP的理想指标。