![]() ![]() Those VPCs that originates in the left ventricle are usually associated with a right bundle branch block (RBBB), and VPCs that arise in the right ventricle show a left bundle branch block (LBBB) pattern. The 12-lead EKG helps to identify the precise location of the origin of VPCs only by the morphology of ectopic beats. Premature ventricular contractions classify according to coupling interval (early and delayed), QRS duration (wide and narrow), morphology, and complexity. However, in certain instances, a QRS complex of duration less than 120 ms can occur, leading to activation of both ventricles "synchronously" because of electrical stimulus from one of the fascicles through a specific conduction system. The VPCs usually originate from the ventricle that leads to a prolonged QRS complex duration greater than 120 ms because of the delay in the spread of activation to the contralateral ventricle through non-specialized myocardium. The morphology of VPCs is highly variable, and it depends upon its place of origin, underlying structural disease, or the use of antiarrhythmic drugs. Reports show that frequent VPCs can cause progressive left ventricular (LV) dysfunction and dilation, which may return to normal after successful catheter ablation of the VPCs. ![]() They can present in patients both with and without preexisting cardiac disease. They are common and can occur in a wide variety of clinical scenarios and a diverse population. If they no longer experience PVCs, they may return to their normal lives and activities.Ventricular premature complexes (VPCs), or premature ventricular complexes/contractions (PVCs), are ectopic beats that arise from within the ventricles. The procedure is generally effective, and patients will need to attend follow-up consultations regularly. Electrodes on the catheter use heat to destroy abnormal tissue, block irregular electrical signals, and restore the rhythm of the heart. These patients may need to consider radiofrequency catheter ablation, a procedure where a catheter is threaded through a vein in the groin to the heart. In severe cases, some patients experience PVCs in up to 10% of their total heartbeats (meaning one premature contraction in every 10 beats), while others may even see their PVCs affect their heart function, leading to heart failure. If a patient’s PVCs are related to structural heart issues, the doctor will need to determine the source of the problem and recommend further treatment, the details of which will not be discussed here. For those with mild symptoms but whose PVCs are unrelated to structural heart issues, the doctor may prescribe medications to reduce the premature contractions. Patients with PVCs that are not caused by structural heart problems and display no symptoms may only need to monitor their condition. If you are experiencing irregular heartbeats, it is always best to seek professional medical advice to better understand the status of your heart health. To detect PVCs, some people have suggested using an electronic watch to measure the heart rate, but at the end of the day, watches are not medical devices. Some may notice their heart is beating irregularly, or feel a sudden thud or pounding. People with PVCs may experience no symptoms at all, or may feel like their heart skips a beat from time to time. As its name suggests, a PVC is a premature heartbeat – it is like listening to a rhythmic song that suddenly misses a beat. Experiencing sporadic heart palpitations is considered normal, but for those who often encounter irregular heartbeats for no apparent reason, they may be suffering from premature ventricular contractions (PVCs). When we are nervous or anxious, our heartbeats suddenly become more noticeable – sometimes, it may even feel like a heavy thud in our chest. Frequent fluttering or pounding of the heart may be a sign of premature ventricular contractions, Also known as ventricular ectopic beats (VEBs) ![]()
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