Dynamic Intraventricular Obstruction in Acute Myocardial Infarction With Administration of Cilostazol

Manifestation of latent left ventricular outflow tract obstruction caused by acute myocardial infarction: An important complication of acute myocardial infarction

“…In this report, we describe the features of LVOT obstruction in AMI; two cases that are reported herein, and another that has been reported previously [9]. First, all cases were 1-VD of LAD.…”

“…Twenty cases of transient LVOT obstruction with AMI have been reported to date [1][2][3][4][5][6][7][8][9][10] ( Table 1). Seven of these 20 patients (35%) had 1-VD of LAD.…”

“…We report two cases of transient LVOT obstruction in AMI that reoccurred with dobutamine (DOB) provocation in the chronic phase. We consider the mechanisms and features of LVOT obstruction in AMI with these two cases in addition to another case which we have previously reported [9]. …”

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IntroductionDynamic left ventricular outflow tract (LVOT) obstruction is a rare complication in acute myocardial infarction (AMI), and about 20 cases have been reported to date [1][2][3][4][5][6][7][8][9][10]. While LVOT obstruction is a potentially reversible complication of AMI, some patients with transient LVOT obstruction during AMI have experienced myocardial rupture and died [3,6].

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Effect of Cibenzoline and Atenolol Administration on Dynamic Left Ventricular Obstruction Due to Sigmoid-Shaped Septum

“…7,8 However, several reports have demonstrated that SS sometimes causes significant narrowing of the LVOT, particularly in cases of LVH or acute myocardial infarction, or when it is exposed to exercise load, anesthesia or surgery. [1][2][3][4][5][6] Furthermore, it has been reported that dehydration, eating, antihypertensive drugs with vasodilating action and positive inotropic agents may increase the LVPG in some cases with SS as well as in those with HOCM. 11 When the dynamic left ventricular obstruction affects the clinical conditions in cases of SS, hypercontraction of left ventricle as well as narrowing of the LVOT are necessary.…”