Or, a problem may develop with the SA node
or the electrical pathways in the heart.
In 5 hearts, SA node
was supplied by both RCA and LCx (6.67%).
The problem in AF is that the SA node
has lost control of the pace of the heart.
The lead also serves to sense the voltage developed at the ventricle or atrium when the SA node
is operating normally.
Advanced electronics apply a large energy pulse to the heart that stops all erratic electrical activity and provides the SA node
an opportunity to take control of the heart rhythm.
Electrical impulses from the SA node
then travel through the heart muscle fibers.
This cardiac cycle is regulated by nerve impulses, generated by the heart's internal pacemaker called the sinoatrial node (SA node
), a small bundle of specialized cells located in the right atrium.
In a normally working heart this impulse is generated by the sinoatrial node (SA node
) which is located in the right atrium.
The SA node
is the pacemaker of the heart, responsible for setting rate and rhythm.
Language Australia, Child ESL & Literacy Research SA Node
Language Australia and the University of South Australia, Adelaide 1998, 225 pp., $20.00
The electrical impulses generated by the SA node
move throughout the right and left atrium, causing the muscle cells to contract and send blood into the ventricles.
It starts with a cluster of cells in the right atrium that form the sinoatrial node (or SA node
She developed significant SA node
block with prolonged asystole after starting treatment with pyridostigmine.
Anatomy of the conducting tissue of heart: The conducting tissue of the heart comprises of SA node
, AV node, AV bundle with 2 limbs & Purkinje fibres.
In addition to the occlusion of RCA, the proximity of the culprit lesion along the course of RCA is also important with regard to the potential complications (SA node
dysfunction, RV infarction etc.) in AIMI.