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传导阻滞的部位对房室传导阻滞的预后起有重要的影响,但在常规心电图上难以区分是房室结还是结下传导阻滞,尤其在希氏束病变时大多数QRS波并不增宽的情况下.然而,通过观察常规心电图上房室传导阻滞对颈动脉窦按摩和注射阿托品的反应,有助于确定传导阻滞的部位.颈动脉窦按摩可使房室结内病变所致的传导阻滞加重,使希氏束-浦顷野系统内的传导阻滞减轻;而注射阿托品的结果正好相反.本文评价颈动脉窦按摩和注射阿托品对于QRS波不增宽的长期房室传导阻滞患者从常规心电图确定阻滞部位的价值.
The site of conduction block has a significant effect on the prognosis of AV block, but it is difficult to distinguish between atrial and ventricular tachycardia or conduction block in conventional ECG, especially in the case of His bundle disease, the majority of QRS waves do not However, by observing the atrial conduction block on conventional electrocardiogram on the carotid sinus massage and injection of atropine response, help determine the site of block.Cear sinus massage can make the atrioventricular node lesions Due to increased conduction block, so that the His bundle - Purina system conduction block reduced; while the injection of atropine is the opposite .This article evaluates the carotid sinus massage and injection of atropine for the QRS wave is not widened long-term room Patients with ventricular conduction block determine the value of the block site from a conventional ECG.