"A biventricular pacemaker is generally used for cardiac resynchronization therapy in patients with severe heart failure who are not controlled well on maximal medical therapy and who have a prolonged QRS duration on ECG (i.e. bundle branch block). In bundle branch block, the affected conduction bundle delays conduction of the depolarisation wave and thereby delays ventricular contraction. This means, for example, in the setting of a left bundle branch block the left ventricle will contract after the right, resulting in a broad QRS complex. Pacing leads are implanted into both ventricles and the device generates electrical impulses in order to stimulate both ventricles to contract simultaneously (and thereby improve the patient's symptoms and functional status)."
"A biventricular pacemaker is generally used for cardiac resynchronization therapy in patients with severe heart failure who are not controlled well on maximal medical therapy and who have a prolonged QRS duration on ECG (i.e. bundle branch block). In bundle branch block, the affected conduction bundle delays conduction of the depolarisation wave and thereby delays ventricular contraction. This means, for example, in the setting of a left bundle branch block the left ventricle will contract after the right, resulting in a broad QRS complex. Pacing leads are implanted into both ventricles and the device generates electrical impulses in order to stimulate both ventricles to contract simultaneously (and thereby improve the patient's symptoms and functional status)."
Expected headings
"Components"
"Function"