典型文献
Puzzling pacing threshold in a patient with cardiac resynchronization therapy device
文献摘要：
CASE
A man in his sixties with dilated cardiomyopathy was admitted to our hospital for the replacement of his cardiac resynchronization therapy(CRT)device.Although his condition had been initially improved after CRT implantation and he had taken an optimized medication regimen and undergone regular device follow-up,echocardiography showed progressive dyspnea and edema with decreased left ventricular ejection fraction(LVEF).During the procedure,his CRT was disconnected and tested using an analyzer module 2290 of the Medtronic 2090 programmer(Medtronic Inc.,USA),and a temporary pacemaker(Model 5318;Medtronic Inc.,USA)and high pacing thresholds(＞5 V/0.5 ms)were noted for both ventricles(Figures 1 A and B).No abnormality in sensing or lead impedance was detected.No significant change in the location or integrity of the leads was found by fluoroscopy.Pre-procedure interrogation showed regular ventricular signals in the intracardiac electrogram(EGM)after the pacing spikes throughout the output decreased to their minimum values(Figure 1C).Apparently,excellent thresholds were also shown by EGM after connecting the new device and repeated testing.
文献关键词：
中图分类号：
作者姓名：
Song-yun Chu;Jing Zhou;Yan-sheng Ding
作者机构：
Department of Cardiology,Peking University First Hospital,Beijing 100034,China
文献出处：
引用格式：
[1]Song-yun Chu;Jing Zhou;Yan-sheng Ding-.Puzzling pacing threshold in a patient with cardiac resynchronization therapy device)[J].世界急诊医学杂志（英文）,2022(03):237-238
A类：
Puzzling,sixties,fluoroscopy,electrogram
B类：
pacing,patient,resynchronization,therapy,device,CASE,
A,man,his,dilated,cardiomyopathy,was,admitted,our,hospital,replacement,CRT,Although,condition,had,been,initially,improved,after,implantation,taken,optimized,medication,regimen,undergone,regular,follow,up,echocardiography,showed,progressive,dyspnea,edema,decreased,left,ventricular,ejection,fraction,LVEF,During,procedure,disconnected,tested,using,analyzer,module,Medtronic,programmer,Inc,USA,temporary,pacemaker,Model,high,thresholds,ms,were,noted,both,ventricles,Figures,No,abnormality,sensing,impedance,detected,significant,change,location,integrity,leads,found,by,Pre,interrogation,signals,intracardiac,EGM,spikes,throughout,output,their,minimum,values,1C,Apparently,excellent,also,shown,connecting,new,repeated,testing
AB值：
0.61796
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