[Transmitral blood flow velocity patterns evaluated by pulsed Doppler echocardiography in diagnosing transient XXXX ].

@entity1 @entity662 @entity308 @entity339 @entity66 @entity63 @entity235 @entity1242 @entity1563 @entity4341 @entity741 @entity955 @entity453
To evaluate the influences of transient @entity741 on transmitral blood flow velocity patterns, pulsed Doppler echocardiography was performed during @entity1563 in 10 anesthetized open-chest @entity235 , and also during esophageal pacing or the administration of @entity4341 in 79 @entity1 with @entity453 ( @entity453 ), and in 19 control subjects. During occlusion of the coronary artery, an abrupt decrease in the peak velocity of the rapid filling wave (R) was noted within one min simultaneously with rapid decrease of % wall thickening in the @entity63 regions. The peak velocity of @entity955 was augmented compensatorily. Although the transmitral blood flow velocity pattern did not change in the controls with esophageal pacing, changes similar to those which were obtained during experimental studies were demonstrated in @entity453 @entity1 . There were no significant differences between transmitral blood flow velocity patterns of @entity1 with multivessel disease and those with @entity66 . Ischemic changes in transmitral blood flow velocity patterns were not demonstrated in @entity1 with @entity339 . Sublingual @entity1242 normalized post-pacing abnormal blood flow velocity patterns. In contrast, after the intravenous administration of 0.56 mg/kg of @entity4341 , R and A were increased and the A/R ratio was unchanged both in @entity453 @entity1 and the control groups. Deceleration time, or the half time, was prolonged during both provocation tests in @entity453 @entity1 , and these changes were transient and were restored within several min. Furthermore, they were noted more frequently than was the development of ST @entity308 on ECG, or @entity662 . These findings indicate that the transmitral blood flow velocity patterns obtained by pulsed Doppler echocardiography are useful for detecting transient @entity741 , though they have limitations in diagnosing the extent of @entity453 .
