With First-Degree AV Block

question 5

Multiple Choice

With first-degree AV block:

• A) the PR intervals are less than 0.20 seconds.
• B) the PR intervals are greater than 0.20 seconds.
• C) the P waves are inverted.
• D) not all the P waves are followed by a QRS.

---

Definitions:

Food Supplements

Products intended to provide nutrients that may not be consumed in sufficient quantities from the diet alone, such as vitamins, minerals, amino acids, and fatty acids.

E-mail Message

A digital form of communication sent through the internet, typically consisting of a subject, message body, and recipient's address.

Mental Workouts

Exercises aimed at improving cognitive functions such as memory, attention, and problem-solving skills.

Cognitive Fitness

A state of optimized ability to remember, learn, plan, and adapt to changing circumstances.