2.a person, an organization, etc, regarded as being the leader in a particular field of activity 3.(Anatomy) Also called:cardiac pacemakera small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of...
2.a person, an organization, etc, regarded as being the leader in a particular field of activity 3.(Anatomy) Also called:cardiac pacemakera small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of...
Medicine/Medical.an electronic device implanted beneath the skin for providing a normal heartbeat by electrical stimulation of the heart muscle, used in certain heart conditions. Anatomy, Physiology.any specialized tissue that governs a rhythmic or cyclic biological activity, as the sinoatrial node of...
1.Anatomya small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of the heart 2.Medan electronic device for use in certain cases of heart disease to assume the functions of the natural cardiac pace...
Rarely, this can significantly alter the anatomy of the heart and impair cardiac function. In this case, a fifty-year-old female had undergone pacemaker placement in her teens having experienced symptomatic bradycardia. Due to pacemaker pocket erosion, she had undergone a lead extraction where lead...
Pacemaker action potentials were recorded in the region identified by mapping as the origin of the impulse in 11 of 11grafts. Action potentials recorded from surrounding working cells were similar to adult rat heart cells in maximum diastolic potential, over- shoot, amplitude, and duration. In ...
PS has not been commonly reported in the young. Data from all patients with pacemakers with congenital complete atrioventricular block (CAVB) with normal anatomy, and those with congenital heart disease (CHD), and surgically acquired CAVB were reviewed. Inclusion criteria were normal ventricular ...
The generation of pacemaker activity in heart and brain is mediated by hyperpolarization-activated cation channels that are directly regulated by cyclic nu... B Santoro,DT Liu,H Yao,... - 《Cell》 被引量: 1260发表: 1998年 Interstitial cells of Cajal generate a rhythmic pacemaker current Networ...
a secondary aim was to determine if other systems in the sinus node cell, especially those which may impact pacemaking, show a day-night rhythm. The data show an all-pervasive day-night rhythm in the transcriptome of the pacemaker of the heart, the sinus node—there is a day-night rhythm...
procedures such as placement ofepicardial pacemakerleads, where access to the anterior portion of the heart or atrium is needed. Atrial septal defects have been repaired through this incision.40More recently, a broader range of cardiac operations have been performed through this incision including ...