Which of the following is the primary function of a pacemaker?
Pacemakers are primarily used to correct bradycardia by providing regular electrical impulses that stimulate the heart to beat at a normal rate.
What is the main difference between a single-chamber and a dual-chamber pacemaker?
The dual-chamber pacemaker can better coordinate the timing between atrial and ventricular contractions, improving cardiac efficiency.
Which of the following devices is used to treat both bradycardia and tachycardia?
An ICD can pace the heart in cases of bradycardia and deliver shocks or rapid pacing to terminate tachycardias, providing a comprehensive treatment for both conditions.
In patients with heart failure, what is the primary purpose of Cardiac Resynchronization Therapy (CRT)?
CRT devices deliver electrical impulses to both ventricles, helping them contract more synchronously and improving the efficiency of the heart in patients with heart failure.
Which component of a pacemaker or ICD is responsible for detecting the heart's intrinsic electrical activity?
The leads of a pacemaker or ICD detect the heart's intrinsic electrical activity and transmit this information to the device, which then decides whether to deliver a pacing impulse or a shock.