2024年10月8日 · Home ECG Library ECG Diagnosis A premature ventricular complex (PVC) is a premature beat arising from an ectopic focus within the ventricles. AKA: ventricular ectopics, ventricular extrasystoles, ventricular premature beats, ventricular premature depolarisations.

A premature ventricular complex is recognized on the ECG as an abnormal and wide QRS complex occurring earlier than expected in the cardiac cycle. It is caused by an impulse discharged from an ectopic focus which may be located anywhere in the ventricles.

2023年4月3日 · Ventricular premature complexes (VPCs), or premature ventricular complexes/contractions (PVCs), are ectopic beats that arise from within the ventricles. They are common and can occur in a wide variety of clinical scenarios and also in a diverse population. They can present in patients both with and without preexisting cardiac disease.

The electrical events of the heart detected by the electrocardiogram (ECG) allow a PVC to be easily distinguished from a normal heart beat. However, very frequent PVCs can be symptomatic of an underlying heart condition (such as arrhythmogenic right ventricular cardiomyopathy ).

2020年6月20日 · 心室期外收縮（VPC）就是心室某處心肌額外產生異常放電，造成多餘的心跳（圖2）。 心室期外收縮的發生頻率也會隨著年齡增長而增加。 據統計顯示 45-65 歲的年齡族群約有 6.2%的發生率。 為何會有心肌異常放電，造成VPC? 需分為兩大類別。 一類是原發性的，也就是心臟本身結構沒有問題，就是那一處心肌細胞異常放電。 另一大類次發性的，也就是心臟結構，或是身體其他地方有問題所引發的。 比如. 1.構造性心臟疾病: 如心肌梗塞後，瓣膜性心臟 …

2019年5月30日 · APC及VPC原因 通常來自emotional stress、交感神經興奮(咖啡因攝取、beta-agonist)、毛地黃、電解質異常(低鉀、低鎂)或心肌缺血等。 後記 VPC頻繁成對、成群出現、太接近前面一跳(小心R on T phenomenon)、使用毛地黃及心肌梗塞後要特別注意。 參考資料

2020年4月27日 · The history, physical examination, and 12-lead ECG are each critical to the diagnosis and evaluation of a PVC. An echocardiogram is indicated in the presence of symptoms or particularly frequent PVCs, and cardiac magnetic resonance imaging is helpful when the evaluation suggests the presence of associated structural heart disease.

2018年9月29日 · Ventricular premature complexes occur when the lower chambers of your heart contract before they should. When this happens, your heartbeat becomes out of sync. You may...

2022年12月14日 · We developed AI-enabled ECG algorithm using a convolutional neural network (CNN) to detect the ECG signature of VPC presented during NSR using standard 12-lead ECGs. A total of 2515 ECG records from 398 patients with VPC were collected.

2025年1月4日 · A VPC in ECG, or Ventricular Premature Complex, represents an ectopic heartbeat originating from the ventricles of the heart. This means the heartbeat doesn't follow the normal electrical pathway of the heart.