CARDIAC ELECTRICAL CONDUCTION SYSTEMS AND IMPLANTABLE DEVICES Flashcards
(22 cards)
What are the four chambers of the heart?
Two upper chambers known as atria and two lower chambers termed as ventricles
What is the function of the sinoatrial (SA) node?
It sets the rate and rhythm of each heartbeat
What is the pathway of the electrical impulse in the heart starting from the SA node?
SA node → AV node → Bundle of His → Left and right bundle branches → Purkinje fibers
What is the average pulse rate for adults?
70 to 80 times per minute
What is arrhythmia?
An irregular heart rhythm
What is an electrocardiograph (EKG)?
A recording of the electrical activity of the heart
Name two common conditions diagnosed through EKG.
- Bradycardia
- Atrial fibrillation
What does electrophysiological (EP) intervention do?
Detects and sends electrical signals to correct irregular rhythm
What are the two main types of implanted devices for cardiac arrhythmias?
- Pacemaker
- Implantable cardioverter defibrillator (ICD)
What is the primary function of a pacemaker?
To supplement the SA node by generating continuous impulses
What additional capability does an implantable cardioverter defibrillator (ICD) have?
Cardioversion or defibrillation to reboot the heart rhythm
What is cardiac resynchronization therapy (CRT) used for?
To synchronize the ventricles of the heart
When is a cardiac device typically replaced?
At the end of its useful life or due to complications
What is the coding requirement for pacemaker insertion?
Document arrhythmia with great specificity
What is the definition of bi-ventricular pacing?
Synchronizes contractions of the left ventricle with the right ventricle
What is an implantable loop recorder (ILR)?
A small device implanted to record the heart’s electrical activity
What is the purpose of the codes 33274 and 33275?
33274 is for implantation and 33275 is for removal of a leadless pacemaker
What does the code Z45.02 refer to?
Encounter for adjustment and management of automatic implantable cardiac defibrillator
Fill in the blank: The _______ is known as the body’s pacemaker.
sinoatrial (SA) node
True or False: An ICD can provide high energy shocks for life-threatening arrhythmias.
True
What types of pacemaker or ICD systems are mentioned?
- Temporary pacemaker
- Permanent pacemaker
- Leadless pacemaker
- Subcutaneous Implantable Defibrillator (SICD)
What does the term ‘leadless pacemaker’ refer to?
A compact device implanted by a heart catheter that includes the pulse generator and electrode in one
