Asked by Avery Braswell on Jul 08, 2024
Verified
When the paramedic shouts "stand back" and applies the paddles to administer a strong current, this is an attempt to
A) restart ventricular contractions that have completely stopped.
B) reverse control of heartbeat from AV to SA nodes.
C) align the P-QRS waves with the electrical paddle waves.
D) stop the ventricles from uncontrolled contractions so the SA node can reestablish a coordinated beat.
E) destroy heart tissue that is out of control.
SA Node
The sinoatrial node, often called the heart's natural pacemaker, initiates electrical impulses that set the rate and rhythm of heartbeats.
Ventricular Contractions
The tightening of the heart's ventricles, which pumps blood out of the heart and into the arteries.
P-QRS Waves
Represents the electrical activity that triggers the heartbeat, as recorded by an electrocardiogram.
- Understand the function and operation of medical interventions during cardiac arrest.
Verified Answer
LM
Logan MichalsJul 08, 2024
Final Answer :
D
Explanation :
This is an attempt to stop the ventricles from uncontrolled contractions so the SA node can reestablish a coordinated beat. The paddles deliver a strong electrical shock to depolarize all the cardiac muscle cells at once, effectively stopping the chaotic contractions of the heart. This allows the SA node to take over and reestablish a normal coordinated heartbeat.
Learning Objectives
- Understand the function and operation of medical interventions during cardiac arrest.