In Third Degree Heart Block with a Rate of 40-

question 9

Multiple Choice

In Third Degree Heart Block with a rate of 40- 60 bpm, with a QRS of less than 0.12 sec., you should suspect that the pacemaker controlling the heart is located in the:

• A)SA node.
• B)AV junction.
• C)ventricles.
• D)atria.

---

Definitions:

High Amplitude

In wave phenomena, refers to waves that have a large peak value, indicating stronger or more intense waveforms.

Stage 3

Depending on the context, this could refer to the third phase in a developmental, psychological, or medical progression system.

Suprachiasmatic Nucleus

A tiny region in the brain's hypothalamus responsible for controlling circadian rhythms by regulating the body's internal clock.

Biological Clock

An internal mechanism that regulates physiological and behavioral rhythms in organisms in a roughly 24-hour cycle.