作者对30例无心脏疾患之基本健康成人进行左胸心电图(包括左前胸及左背部)标测检查,现仅将其中Q波标测结果进行分析。资料与方法30例中男24例,女6例,平均年龄38.8岁(最小年龄18岁,最大年龄59岁)。30例均作病史询问、体格检查、常规心电图、X线、实验室及其他有关辅助检查,皆未发现异常。标测电极放置位置为:前胸:横排五排,自上而下标名为A、B、C、D、E排,A排为第二肋间水平,E排位胸骨剑突与脐连线中点 The author of 30 cases of basic health adults without heart disease left chest ECG (including the left chest and left back) mapping test, now only the Q wave mapping results were analyzed. Materials and Methods 30 cases of 24 males and 6 females, mean age 38.8 years (minimum age 18 years, maximum age 59 years). 30 cases were asked for medical history, physical examination, conventional ECG, X-ray, laboratory and other related auxiliary examination, were found no abnormalities. The location of the mapping electrode is: chest: five rows in the row, the top to bottom row labeled A, B, C, D, E row, A row for the second intercostal level, E ranked sternum xiphoid and navel Midpoint connection