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本文以M型超声心动图测定早搏患者的各个心动的搏出量、射血分数和左室内径缩短率,并对各种心动进行比较。结果表明早搏的搏出量、射血分数和左室内径缩短率较窦性搏动和早搏后搏动均低,除插入型室早的早搏后搏动外,频繁的早搏转使输出量明显减少。早搏的搏出量减少程度与其配对间期、早搏起源的部位等多种因素有关。器质性心脏病配对型室早患者的窦性搏动和早搏的射血分数和左室内径缩短率明显低于非器质性心脏病,这是否可用来鉴别器质性和非器质性病变值得进一步探讨。
In this paper, M-mode echocardiography was used to measure the stroke volume, ejection fraction and left ventricular diameter shortening rate in patients with premature beats, and to compare various heartbeats. The results showed that stroke volume, ejection fraction and left ventricular diameter shortening rate were lower than those of sinus beats and premature beats. Except premature beats of plugs, premature beats, frequent premature beats resulted in a significant decrease in output. Premature beat stroke volume reduction and pairing interval, the location of premature beats and other factors. Patients with organic heart disease matched early ventricular sinus beat and premature beat ejection fraction and left ventricular diameter was significantly lower than non-structural heart disease, which can be used to identify organic and non-organic lesions Worth further exploration.