In Which Dysrhythmia Do the P-P and R-R Intervals Progressively

question 2

Multiple Choice

In which dysrhythmia do the P-P and R-R intervals progressively widen, and then narrow, following the patient's breathing pattern?

• A)Sinus tachycardia
• B)Sinus dysrhythmia
• C)Sinus bradycardia
• D)Normal sinus rhythm

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Definitions:

Intercostal Muscles

Muscles located between the ribs that help in the process of respiration, aiding in the expansion and contraction of the chest cavity.

Mandible

The lower jawbone in vertebrates, forming the lower part of the skull.

Mylohyoid

A muscle that forms the floor of the mouth, elevates the tongue, and depresses the jaw.

Masseter

A facial muscle that plays a crucial role in chewing by elevating the mandible (lower jaw).