Hasdai D, Birnbaum Y, Porter A, Sclarovsky S
Sackler Faculty of Medicine, Tel Aviv University, Israel.
Int J Cardiol. 1997 Feb;58(3):273-8. doi: 10.1016/s0167-5273(96)02881-1.
In inferior wall acute myocardial infarction, maximal ST-segment depression in left precordial leads (V4-V6) has been shown to be associated with increased in-hospital mortality, presumably due to coronary artery disease involving the left anterior descending coronary artery system.
We measured ST-segment deviation from baseline in the initial electrocardiogram of patients with inferior wall acute myocardial infarction, who subsequently underwent coronary angiography during their in-hospital stay. Patients were divided into three groups: (I) No precordial ST-segment depression (n = 34). (II) Maximal precordial ST-segment depression in leads V1-V3 (n = 44). (III) Maximal precordial ST-segment depression in leads V4-V6 (n = 14).
The left anterior descending coronary artery or its diagonal branch were stenosed (> 50%) in 32%, 41%, and 71% of patients in groups I, II, and III, respectively (p = 0.04), and severely stenosed (> 70%) in 18%, 18% and 57% of patients in the respective groups (p = 0.007).
In patients with inferior wall acute myocardial infarction, maximal precordial ST-segment depression in leads V4-V6 is suggestive of severe coronary artery disease involving the left anterior descending coronary artery or its diagonal branch.
在下壁急性心肌梗死中，左胸前导联（V4-V6）最大ST段压低已被证明与住院死亡率增加相关，推测是由于累及左前降支冠状动脉系统的冠状动脉疾病所致。
我们测量了下壁急性心肌梗死患者初始心电图中ST段相对于基线的偏移，这些患者随后在住院期间接受了冠状动脉造影。患者被分为三组：（I）胸前导联无ST段压低（n = 34）。（II）V1-V3导联胸前最大ST段压低（n = 44）。（III）V4-V6导联胸前最大ST段压低（n = 14）。
I、II、III组患者中，左前降支冠状动脉或其对角支狭窄（> 50%）的比例分别为32%、41%和71%（p = 0.04），严重狭窄（> 70%）的比例分别为18%、18%和57%（p = 0.007）。
在下壁急性心肌梗死患者中，V4-V6导联胸前最大ST段压低提示累及左前降支冠状动脉或其对角支的严重冠状动脉疾病。
