Thorweihe H, Ziesenhenn K, Behn P
Z Gesamte Inn Med. 1980 Dec 15;35(24):883-6.
When an overturned left type is present special criteria render possible the diagnosis of the left-anterior fascicular block. Among 7,687 ECG in 698 cases (9.1%) an overturned left type was to be seen. In accidental random test of 300 ECG with overturned left type in 183 cases (61%) a left-anterior fascicular block, in 111 cases (37%) an overturned QRS-left position were found. In 6 cases (2%) a decision was not possible. The left-anterior fascicular block increasedly appears with growing age beyond the 50th year of life. Hypertension (67%), chronic ischaemic heart disease (46%) clearly prevail in patients with left-anterior fascicular block, on the other and non-cardiovascular diseases with 58% more frequently appeared in the group of patients with overturned QRS-left-position. In this group hypertension occurred only in 33%, chronic ischaemic heart disease only in 14%.
当出现左倾转位类型时，特殊标准使得左前分支阻滞的诊断成为可能。在698例患者的7687份心电图中（9.1%）可见左倾转位类型。在对300份左倾转位心电图进行的偶然随机测试中，183例（61%）发现左前分支阻滞，111例（37%）发现QRS波左偏，6例（2%）无法做出诊断。左前分支阻滞在50岁以上人群中随年龄增长而愈发常见。左前分支阻滞患者中高血压（67%）、慢性缺血性心脏病（46%）明显居多，另一方面，QRS波左偏组患者中出现非心血管疾病的频率更高，为58%。该组中高血压仅占33%，慢性缺血性心脏病仅占14%。
