Biventricular Pacemakers
At some point in every person's life, you will need an assisted medical device - whether it's your glasses, your contacts, or as you age and you have a hip replacement or a knee replacement or a pacemaker. The prosthetic generation is all around us - Aimee Mullins
HWN Suggests
Should All Patients With Heart Block Receive Biventricular Pacing?
Single- or dual-chamber pacemakers with RV pacing are undoubtedly the main therapy for symptomatic AVB. With increasing evidence of potential adverse effects of permanent RV pacing mainly because of systolic dyssynchrony, other pacing modalities or pacing modes are being considered. Biventricular pacing is one of the options and has been shown to be potentially superior to RV pacing even for those who require pacing but do not have a conventional indication for biventricular pacing. Biventricular pacing is emerging as a realistic treatment option to prevent RV pacing induced LV dysfunction for symptomatic patients with advanced AVB.
Articles of Interest
Biventricular Pacemakers
Biventricular pacemakers are a special type of pacemaker used in heart failure. The pacemaker has all the functions of a normal bradycardia pacemaker, but has an additional lead. A standard bradycardia pacemaker often has two leads, one placed in the right atrium (upper chamber) and one in the right ventricle (lower chamber), although some pacemakers have a single lead. A biventricular pacemaker has an extra lead that stimulates the left ventricle as well.
Cardiac Resynchronization Therapy (CRT)
CRT uses a biventricular pacemaker (or defibrillator) with two wires in the lower chambers of the heart to overcome this slow or abnormal conduction. By delivering simultaneous or near simultaneous electrical impulses to both lower heart chambers (the right and left ventricles), it causes the heart to beat in a more synchronized, efficient manner. Biventricular pacing improves the symptoms of about two-thirds of the patients undergoing this procedure and also improves survival. As people with heart muscle damage also may have dangerously fast heart rhythms, biventricular pacing is often combined with a defibrillator.
How Bi-Ventricular Pacemakers are Saving Lives
Biventricular pacemaker improves symptoms of heart failure in about 50% of patients who have been treated with medications but still have severe or moderately severe heart failure symptoms. Biventricular Pacemaker improves survival rate, quality of life,ability to exercise and heart function in such patients.
Resynchronization Therapy (CRT) (Biventricular Pacemaker)
In cardiac resynchronization therapy (CRT), a small electronic apparatus is surgically implanted to help both ventricles contract together. This device is made up of three leads which are attached to the heart muscle at one end (one each to the right atrium, right ventricle and left ventricle) and to a pulse generator at the other. The pulse generator is placed under a pocket of skin created either in the upper chest or the abdomen.
Resources
Radiopaedia
Biventricular cardiac pacemakers are surgically implanted cardiac conduction devices with one lead in each ventricle (and often one in the right atrium) used for cardiac resynchronization therapy.
StatPearls
Heart failure is one of the major causes of morbidity and mortality worldwide, and it is associated with poor life expectancy, poor quality of life, and a higher economic burden on the healthcare system. This activity reviews the role of biventricular pacemaker placement in patients with congestive heart failure and highlights the interprofessional team's role in evaluating and improving care for patients who undergo biventricular pacemaker placement.
