CAJ | 학술논문

用脉冲多普勒超声技术对18例慢性二尖瓣返流(CMR)患者和21例正常人进行二尖瓣舒张期血流频谱定量研究.结果表明,CMR出现的假性正常的二尖瓣血流频谱,掩盖了左室舒张功能减退,实际为左室松驰功能障碍及顺应性降低所致.CMR组的E波压差(E-PG)、A波压差(A-PG)、等容舒张时间(IVRT)、E波减速时间(E-DT)及左室充盈时间(LVFT)等与正常对照组比较有显著性差异(P<0.01),是CMR情况下反映左室舒张功能减退的综合评价指标.
용맥충다보륵초성기술대18례만성이첨판반류(CMR)환자화21례정상인진행이첨판서장기혈류빈보정량연구.결과표명,CMR출현적가성정상적이첨판혈류빈보,엄개료좌실서장공능감퇴,실제위좌실송치공능장애급순응성강저소치.CMR조적E파압차(E-PG)、A파압차(A-PG)、등용서장시간(IVRT)、E파감속시간(E-DT)급좌실충영시간(LVFT)등여정상대조조비교유현저성차이(P<0.01),시CMR정황하반영좌실서장공능감퇴적종합평개지표.
Pulsed wave Doppler echocardiograpdy was performed in eighteen cases with chronic mitral regurgitation(CMR)and 21 normal individuals td detect the quantitative changes of the mitral diastolic flow spectrum.The results showed that the pseudonormalization of mitral flow spectrum in CMR was actually caused by impaired left ventricle(LV)active relaxation and decreased LV compliance:It thus masked the LV diastolic dysfunction in CMR.E-wave pressure gradiant(E-PG),A-wave pressure gradiant(A-PG),isovolumic relaxation time(IVRT),E deceleration time(E-DT)and LV filling time(LVFT)in CMR group were significantly different in from those in normal group(P<0.01).Therefore it is essential to integrate these parameters as the indexes to evaluate the LV diastolic dysfunction in CMR.