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患者男性,68岁。临床诊断:冠心病,心绞痛可疑?入院后行食道心房调搏。图1(见第169页)食道心房起搏频率90次/分、起搏30秒出现类似3:2文氏现象图形,房室传导时间分别为SR_1330、SR_2360和SR_3560毫秒,随后1次刺激波未能下传心室。起搏频率达130次/分时,多次出现类似3:2文氏现象图形,传导时间与图1A相似。B示起搏频率90次/分,前3次SR间期从340—390毫秒,SR_4550、SR_5600毫秒,以后SR630毫秒持续3个心搏不变,随后1次刺激波未能下传心室。C—F基本起搏周期860毫秒,以4:1分频起搏,中行S_1S_2从510至500毫秒时,S_2R从340毫秒延长到560毫秒(C—D)。S_1S_2从450至440毫秒时,S_2R从600窀秒延长到670毫秒(E—F)。呈现
Male patient, 68 years old. Clinical diagnosis: coronary heart disease, angina pectoris suspicious? After admission, esophageal atrial pacing. Figure 1 (see page 169) pacing atrial pacing rate of 90 beats / min, pacing for 30 seconds showed a similar 3: 2 Wen’s graph, atrioventricular conduction time SR_1330, SR_2360 and SR_3560 milliseconds, followed by a stimulus wave Failed to download the ventricle. Pacing frequency of 130 beats / min, many times similar to 3: 2 Wen’s phenomenon graph, conduction time similar to Figure 1A. B shows the pacing rate of 90 beats / min, the first 3 SR interval from 340-390 milliseconds, SR_4550, SR_5600 milliseconds, after SR630 milliseconds for 3 heart beats, followed by a stimulation wave failed to download the ventricle. The C-F basic pacing cycle was 860 milliseconds with a 4: 1 fractional pacing. The S_2R was extended from 340 milliseconds to 560 milliseconds (C-D) when the S_1S_2 was from 510 to 500 milliseconds. S_2R was extended from 600 窀 seconds to 670 milliseconds (E-F) for S_1S_2 from 450 to 440 milliseconds. Rendered