Q: What is sick sinus syndrome? Is a pacemaker the only cure? My grandmother was just diagnosed with it but, at age 94, has refused to even consider a pacemaker. A: Sick sinus syndrome refers to a ...

Dear Doctor: What is sick sinus syndrome? Is a pacemaker the only cure? My grandmother was just diagnosed with it but, at age 94, has refused to even consider a pacemaker. Dear Reader: Sick sinus ...

Dear Doctor: What is sick sinus syndrome? Is a pacemaker the only cure? My grandmother was just diagnosed with it but, at age 94, has refused to even consider a pacemaker. Dear Reader: Sick sinus ...

Although the heart has an intrinsic pacemaker, its rate is affected by two systems: the sympathetic nervous system to speed it up and the parasympathetic nervous system to slow it down, says Dr.

A specific cell population is responsible for ensuring that our heartbeat remains regular. Researchers from Ludwig-Maximilians-Universitaet (LMU) in Munich have now elucidated the mode of action of ...

Q: What is sick sinus syndrome? Is a pacemaker the only cure? My grandmother was just diagnosed with it but, at age 94, has refused to even consider a pacemaker. A: Sick sinus syndrome refers to a ...

Modern pacing systems are composed of a pulse generator and a lead (Figure 1). The pulse generator has a roughly circular shape (4-5 cm diameter) and weighs approximately 25-30 g. [32] The pulse ...

Embryonic heart cells possess intrinsic pacemaker activity, but as development progresses the overall rate and rhythm of the heart is determined by a small number of pacemaker cells situated within ...

Baltimore, MD - Researchers have used gene transfer techniques to convert quiescent heart muscle cells into pacemaker cells, generating spontaneous, rhythmic electrical activity in the ventricle of ...

When high doses of AV blocking drugs are not successful to lower ventricular rates in the setting of atrial fibrillation, AV node ablation can be utilized. Remember that all atrial action potentials ...

What is sick sinus syndrome? Is a pacemaker the only cure? My grandmother was just diagnosed with it but, at age 94, has refused to even consider a pacemaker. Sick sinus syndrome refers to a problem ...