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患者男性,68岁。临床诊断:急性前间壁心肌梗塞。发病后第7天心电图(附图)示:窦性心律(A_1)均齐,P-P 间期700—730ms。间歇出现形态与基本窦性 P 波相似的单个或连续2—3个房性早搏(A_2、A_3、A_4),P(P′)-R 间期相等(190ms)。上行第3段 A_1A_2+A_2A_3A_2A_3,之后折返中断,提示在折返途径中有文氏现象,第1和第4段早搏引起1次显性窦性回搏,第2段仅有1个早搏。窦性回搏后回转周期均大于窦性周期,可能由于连续折返末次下行时被阻滞,形成隐匿性折返,第2段早搏后回转周期更长,亦可能发生了2次隐
Male patient, 68 years old. Clinical diagnosis: acute anterior myocardial infarction. The seventh day after onset of ECG (with photos) shows: sinus rhythm (A_1) were homogeneous, P-P interval 700-730ms. Single or continuous 2-3 atrial premature beats (A_2, A_3, A_4) and P (P ’) - R intervals similar to basic sinus P wave appeared intermittently (190 ms). Upstream third paragraph A_1A_2 + A_2A_3 A_2A_3, It is suggested that there is Wen’s phenomenon in the reentrant route. The first and the fourth premature beats cause a dominant sinus callback and the second one has only one premature beats. Sinus cycle after the return cycle are greater than the sinus cycle, may be due to the continuous retreat at the end of the downlink was blocked, the formation of occult reentry, paragraph 2 premature beats cycle longer, may also occur 2 times hidden